British Rototherm Process Measurement Solutions

Process Measurement SolutionsTemperature, Pressure & Flow

www.rototherm.co.uk

Process Measurement SolutionsWith over seventy five years of experience, the British Rototherm Group con-tinues to be a world leader in the manufacture of industrial instrumentation for measuring, monitoring and controlling Temperature, Pressure, and Flow.

British Rototherm and Thermocouple Instruments products are manufactured in a modern factory located in the South Wales region of the United Kingdom. Sited on 6 acres of land at Kenfig Industrial Estate, the company operates from a modern 6,030 square metre (65,000 square feet) factory.

British Rototherm is an established manufacturer of custom designed process measurement equipment for a wide range of industries including Petrochemi-cal, Oil and Gas, Chemical, Contract Engineering, Pharmaceutical, Food and Brewing, Defence, Power, Steel and Water.

We pride ourselves on our strength and versatility, expressed by our ability to design and manufacture to your exact requirements. This is really where our in-house expertise excels and can tailor the exact solutions to your needs.

Our strong technical advice and software programmes, designed in-house, help to make your measurements accurate, reliable and easier to attain. Our quality process is crucial to our service and our ISO9001 and ATEX approved assemblies ensure you get quality service not only from the product, but also from the moment you call us.

Contents

Introduction.................................................................................. 1

Our Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Temperature

Thermometers...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Temperature Recorder...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Temperature Assemblies...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Temperature Switches...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Pressure

Pressure Gauges...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Pressure Recorders...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Pressure Switches...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Pressure Transmitters...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Flow

Flow Recorders...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Flow Meters...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Primary Flow Elements...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Other Products

Chart Recorder Accessories...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Manifolds & Minifolds...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Pressure Gauge Accessories...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Service & Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2 | Rototherm - Process Measurement Solutions

www.rototherm.co.uk

Our GroupOver the past 15 years, the Rototherm group has been expanded to include a number of well know companies, each well established as market leaders within their business.

At the centre of each group member is the continued commitment to product quality and the highest levels of customer service.

ProductsRTD

EngineeringHNLBentley instruments

ThermocoupleInstruments

Our MissionIt is our philosophy that the customer is the absolute priority. We have a duty to maintain this principle, and we believe it will give us the edge over our competitors.

We have a highly trained team of sales engineers who listen to, and un-derstand your needs, to achieve the very best solutions with the minimum of fuss. Our drawing office is extremely experienced and can provide de-tailed drawings of your requirements prior to manufacture.

Customer satisfaction and approval, particularly at these early stages, means everything. From planning, through manufacture, assembly and testing our quality management systems ensures your expectations are exceeded.

Total QualityAt the centre of everything we do, Rototherm’s high quality and perfor-mance is guaranteed by an uncompromising approach to quality. Rototherm’s policy has always been to maintain a consistently high level of quality and reliability throughout its product range and service to cus-tomers. The company has worked energetically towards establishing comprehen-sive quality controls ad has earned a worldwide reputation for product quality.

This reputation has been confirmed by formal approval to Quality Assur-ance standard ISO9001:2008.

All calibration standards are traceable to national standards thus allow-ing the issuing of test or calibration certificates when required.British Rototherm is approved by major companies in the United Kingdom

and throughout the world, for the supply of instrumentation and associated products.

ATEXAPPROVED PRODUCTS

Thermocouple Instruments

A world leader in the manufacture of temperature assemblies and flowinstrumentation.

For more information visit: www.thermocouple.co.uk

RTD Products

The UK’s leading manufacturer of ceramic encapsulated wire wound plat-inum resistance temperature detectors.

For more information visit: www.rtd-products.co.uk

Bentley Instruments Co. Ltd.

Ireland’s leading provider of solutions in the fields of instrumentation, on-site calibration and service, metal detection, tablet and capsule de-dusting and powder handling.

For more information visit: www.bentley-instruments.com

HNL Engineering

HNL is a major UK based instrumentation manufacturer and precision machining services provider to a wide range of process related industries. Products include pressure and temperature switches along with a wide range of manifolds and minfolds suitable for a wide range of industrial applications.

For more information visit: www.hnl-uk.com

TM

ISO9001:2008

3

| Chart Recorders & Recorder Controllers

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Sentinel Microprocessor Recorder 3 9” � � x � x x � � � � � x

Clearscan Recorders 3 12” � � � � � � � x � x x x

C105 Recorders 2 10” � � � � � � � x x x x x

Model RPO Pressure Recorders 3 9” � � � � � � � x x x � �

Model RTO Temperature Recorders 3 9” � � � � � � � x x x � �

Model RTH Series Recorders 2 9” � � x � x x x � x x x x

� = standard feature � = available option x = not available

Chart Recorders & Recorder Controllers• Temperature, Pressure, Flow & Humidity• Rugged design & construction• Accurate & reliable measuring systems• Up to 3 recording pens• Simple installation & maintenance required• Fully mechanical versions available• Choice of mounting options - wall / panel / portable / 2” pipe• Electrical and pneumatic control options

• Spares and consumables widely available

An extensive range of chart recorders and controllers which includesprogrammable microprocessor electric-input recorder controllers and awide range of mechanical recorders for temperature, pressure, humidity and flow with options for electrical or pneumatic control.

Rototherm chart recorders can be used to record and control:

• Temperature • Pressure • Humidity • Flow

Each recorder is supplied with a packet of 100 charts and 1 spare packetof pens for each pen.

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Temperature Measurement

Pressure Measurement

Flow Measurement

Humidity Measurement

Available to purchase online

Chart Recorders - key to symbols

4

Chart Recorders Features

www.rototherm.co.uk

Sentinel Microprocesser Based Chart Recorders

• 1, 2 or 3 pen versions available• User configurable via front panel keypad• Easy-to-use menu-driven software for rapid configuration • and calibration• Universal input accepts thermocouples, RTDs, Vdc and mAdc• Large character alphanumeric display panel with backlight• High accuracy and stability• Microprocessor control of ranging, relays, chart speed and sensor linearisation• Combinations of temperature, pressure, and flow can be specified

The Sentinel range of micro-proces-sor based circular chart recorders is available in 1, 2 and 3 channel versions. Sentinel combines the simplicity and clarity of pen drawn traces together with the versatility of microprocessor control. Each channel is equipped with a universal signal input which is compatible with all industry stan-dard sensors and signals including thermocouple types J, K, T, E, N, R, S and B, Pt100 platinum resistance temperature detectors and 4 to 20mA current loops.

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Clearscan Chart Recorders

• 1, 2 or 3 pen temperature, pressure & flow recording• Simple installation and maintenance requirements• Wall, panel, portable or pipe mounting available• Fully mechanical versions available• Electrical, battery or mechanical chart drive options• Large 12 inch diameter chart

The Clearscan range of circular chart recorders with a 12 inch (300mm) diameter chart are proving to be a great success with our customers throughout the world.

The Clearscan range of recorders are suitable for most industrial applications.

Each recorder uses a proven and relaible Rototherm temperature, pressure or differential pressure system. As well as being easy to install and maintain, the Rototherm Clearscan range of recorders offer

excellent value for money.

Clearscan recorders are available with black steel and 316 stainless steel cases.

Clearscan recorders use charts, pens and chart drive motors that are 100% interchangeable with some other manufacturers.

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Clearscan C105 Chart Recorders

• 2 pen pressure recording at low cost• Simple installation & maintenance• Fully mechanical versions available• Electrical control options• Robust & reliable • Combinations of temperature and pressure can be specified

Developed from the ex Kent Indus-trial Measurement and Cambridge range of temperature circular chart recorders, the C105 continues to be available and still offer the same reli-ability and versatility that has been manufactured for the past 30 years. The C105 pressure and temperature recorders are supplied in a robust, heavy duty steel bodies and can be supplied with up to two pens - both temperature or a choice of temperature and pressure.

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RPO Pressure Chart Recorders

• 1, 2 or 3 pen temperature & pressure recording at low cost• Simple installation & maintenance• Fully mechanical versions available• Electrical control options• Combinations of temperature and pressure can be specified

The RPO series of pressure circular chart recorders uses the well proven and reliable Rototherm non ferrous or stainless steel pressure system. These reliable and accurate instru-ments are suitable for most applica-tions where there is a requirement for low cost pressure recording. The RTO filled system range of temperature circular chart recorders uses the well proven and reliable Rototherm stainless steel thermal system.

These reliable and accurate instruments are suitable for most ap-plications where there is a requirement for low cost temperature recording. Up to three pens can be fitted with three temperature systems or combination of temperature and pressure sensing systems. The case is suitable for panel mounting or may be specified as portable or pipe mounting. Each recorder is supplied with 100 charts and spare pens.

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RTO Temperature Chart Recorders

• 1, 2 or 3 pen temperature & pressure recording at low cost• Simple installation & maintenance• Fully mechanical versions available• Electrical control options• Combinations of temperature and pressure can be specified

The RTO filled system range of temperature circular chart recorders uses the well proven and reliable Rototherm stainless steel thermal system. These reliable and accurate instru-ments are suitable for most applica-tions where there is a requirement for low cost temperature recording. Up to three pens can be fitted with three temperature systems or combi-nation of temperature, and pressure sensing systems. The case is suitable for panel mount-ing or may be specified as portable or pipe mounting.

Each recorder is supplied with 100 charts and spare pens.

RTH Series Temperature & Humidity Chart Recorders

• Temperature and/or humidity recording at low cost• Simple installation & maintenance• Uses proven bimetallic coil and hygroscopic membrane• Choice of chart rotations• Ambinet or remote sampling options available

The RTH100 Series of temperature and humidity circular chart recorders uses the proven design combination of bimetallic coils and hygroscopic membrane for the direct measure-ment of temperature and humidity. Changes in atmospheric temperature and humidity are detected by the two elements within the recorder. The bimetallic coil monitoring the tem-perature and hygroscopic membrane monitoring the humidity. Air is drawn through the instrument and over the two sensing elements

by an electrically driven fan. Expansion or contraction of the bime-tallic coil, due to temperature change, causes the pen movement by direct linkage. Similarly a change in humidity causes extension, or contraction, of the hygroscopic membrane and direct linkage again causes movement of the second pen. Please note that control options are no longer offered

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Chart Recorder Consumables and Spares

A complete range of circular charts are available for all Rototherm, Ne-gretti and ABB Kent Industrial Mea-surement recorders and controllers. All pens and a wide selection of the popular chart ranges and sizes are available from stock. Also kept in stock are a large selec-tion of disposable pens suitable for all Rototherm recorders and controllers.

A wide range of chart recorder consumables are available along with stock pressure gauges and gauge accessories are avaialble from Rototherm’s onlune shop. Deliveries are fast with most prod-ucts available for shipment within 24 hours after order placement. Please visit www.rototherm-online.co.uk for more details. Please note that the Rototherm online store is currently only avail-able to UK customers with deliveries to UK postal addresses.

| Chart Recorders & Recorder Controllers6

www.rototherm.co.uk

Thermometers• Rugged design & construction• Accurate & reliable measuring systems• Analogue and Digital versions available• Wide choice of measuring ranges• Electrical control options

Bimetallic ThermometersBimetallic thermometers are manufactured in various versions to suitmost industrial applications . All bimetallic thermometers are manufac-tured with stainless steel cases and sensing stems and are used in manyindustries including food, beverage, dairy, pharmaceutical and petro-chemical.

Filled System ThermometersAs well as bimetallic thermometers, Rototherm manufactures a widerange of filled system thermometers. Developed from the original Mercury in Steel thermometers, Rototherm now manufactures these thermometers with a safe, non- toxic filling. Both rigid stem and capillarymodels are available and these thermometers can be specified withelectrical contact heads if required.

DigiTemp Digital ThermometersThe DigiTemp range of digital thermometers are manufactured thatemploy micro processors enabling extremely low power consumptionto be achieved thus offering extend battery life. Available with eitherthermocouple or RTD PT1000 sensor, DigiTemp is offered in both rigidstem and remote reading versions. The addition to the range of an ATEXapproved intrinsically versions allows this product to be standardised inall pharmaceutical and petro chemical industries.

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Light Duty Bimetallic Thermometers 63 (2.5) 304 Stainless Steel x � x 400 x x

Heavy Duty Bimetallic Thermometers 63 (2.5), 100 (4), 160 (6)

304 Stainless Steel(316 Stainless Steel) x � � 600 � x

Any Angle Pattern Bimetallic Thermometers 100 (4), 130 (5), 160 (6)

304 Stainless Steel(316 Stainless Steel) x � � 600 x x

Surface Bimetallic Thermometers 63 (2.5) 304 Stainless Steel x � x 400 x x

Filled System Thermometers 100 (4), 160 (6) 304 Stainless Steel(316 Stainless Steel) � � � 650 � x

Diesel Exhaust Thermometers 100 (4) Polyester Resin � � � 650 x x

DigiTemp Digital Thermometers 100 (4) 304 Stainless Steel(316 Stainless Steel) � x � 800 x �

� = standard feature � = available option x = not available

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Thermometers Features

BL1 & BL2 Light Duty Bimetallic Thermometers

• Choice of 50mm or 63mm dial size• All stainless steel construction• Wide range of temperature ranges available• Models available with thermowells suitale for pipelines• Models available for use on ovens, sterilizers, cabinets etc...

Suitable for use on food processing equipment, the completely sealed stainless steel stem make the Roto-therm range of Light Duty Bimetal-lic Thermometers the ideal choice for the food and beverage industry. Perspex windows can be supplied in place of glass if required for added process safety.

The Rototherm range of Light Duty Bimetallic Thermometers can be supplied for direct insertion in the

process or with a compression fitting that tightens onto the stem to provide a liquid and gas type seal.

The BL102 model is supplied with a thermowell to enable the thermometer to removed from the procss without the need to drain the system

BH2 Heavy Duty Bimetallic Thermometers

• 63mm, 100mm and 160mm case options• Stainless steel construction - case and stem• External zero adjustment• No contaminents - safe for food and chemical applications• Can be supplied with a wide range of Rototherm thermowells• Can be fitted with electrical contact heads (100mm & 160mm • sizes only)• Available with maximum or minimum value and index pointers

The Rototherm range of Heavy Duty Bimetallic Thermometers combines robust construction, that makes these instruments suitable for the most stringent environmental conditions, together with an accurately manufac-tured bimetallic coil, which enable each instrument to ensure a long dependable life.

BH3 Any Angle Pattern Bimetallic Thermometers

• 100mm, 130mm and 160mm case options• Stainless steel construction• External zero adjustment• Silicone filling available• No contaminents - safe for food and chemical applications• Can be supplied with a wide range of Rototherm thermowells

The Rototherm range of Any Angle Bimetallic Thermometers allows movement of the adjustable head through 180º, through a full 360º rotation, thus allowing its position to be set for maximum readability after installation.

All welded stainless steel construc-tion of the system/bellows assembly allow full angular adjustment of the case through 360º without the need for pointer adjustment.

BL3 Surface Temperature Thermometers

• 63mm dial size• Spring fixing suitable for mounting to pipes (Model BL301)• Magnetic fixing suitable for mounting to horizontal or vertical surfaces.• Wide range of temperature ranges available

A range of surface mounting bimetal-lic thermometers suitable for testing, balancing and fault-finding on heat-ing systems. They can be attached to a surface by an adjustable spring or magnet to give an immediate indica-tion of temperature without drilling or cutting.

This range of bimetallic thermometers is equally suitable foruse on pipelines or flat surfaces such as radiators, platens or hot plates.

Excellent thermal conductivity is provided by the aluminiumhousing to the bimetallic element, while the stainless steelcase and bezel minimises dissipation of heat to the atmosphere.

| Thermometers8

Thermowells

Used predominantly in the power, process, pharmaceutical and petrochemical industries, thermowells are used to protect temperature indicators and sensors from process media and to enable servicing or replacement of indicators without the need to shut down plant.

Available with either flanges or screwed process connections, Rototherm thermowells are available fabricated from tube, drilled from barstock or from forgings. Full material certification including original mill and suppliers material certificates can be provided. If required NACE standard MR-01-75 requirements can be met.

Please see page for further details on our extensive range of thermowells.

www.rototherm.co.uk

NC & NR Filled System Thermometers

• 100mm & 160mm dial sizes• Stainless steel case (316 option)• All stainless steel construction• Back or bottom entry versions• Available with capillary or rigid stem• Non Toxic “Filsafe” filling• Available with a wide range of thermowells• Can be fitted with electrical contacts

The Rototherm range of filled system thermometers offer tough yetaccurate instruments with rigid stems for direct mounting or with flexible capillary for remote reading. Most models in the range may be specified with electrical contactheads to provide alarm or control functions. Rototherm non toxic filled system thermometers are designed to give guaranteed reliability over a wide range of ambient temperatureconditions and are compensated for ambient temperature changes from -30 to +50ºC.

NC1 & NC2 Capillary Thermometers Where display is required some distance from the sensing point,for example on an instrument panel, capillary thermometers should be used.

The dial can be located up to 30 metres from the sensing point and isolated from dirt and vibration. The sensing bulb is connected by stainless steel microbore capillary, protected by stainless steel tubing. For severe conditions, flexible armour can extend the entire length of the capillary. Alternative protections can be speci-fied if required.

NC3 & NR3 Diesel Exhaust Thermometers

The Rototherm range of diesel exhaust thermometers provide an accurate and reliable indication of the exhaust gas temperature of diesel engines and generators.

The stem is fitted with a unique anti-resonant section which dampens out vibration of the instrument head, and eliminates the need for oil filling.

The use of the capillary type enables all the dials to be located on a single panel to provide immediate visual comparison of the performance of each cylinder.

DigiTemp Digital Thermometers & Transmitters

• RTD or Thermocouple Sensor• Direct reading rigid stem or remote reading capillary versions available• Choice of cable materials and protections• ATEX versions available• 4 to 20mA retransmission option• MAX/MIN reading options• 2 years continuous operation from 2 x AA cells

DT1 Digital Thermometers

The Rototherm DT1 is a micro pro-cessor based, battery operated,continuous reading, type K thermo-couple input digital thermometer.Two basic versions are available, both have clear four digit LCD displays with 12.7mm high characters and 1ºC/ºF resolution.

The stem can be either 12.7mm or 6.35mm diameter with a reduced tip for fast response. The stem length

and fitting, if required, can be user specified. The DT1-1 can be mounted directly on to a pipe line or vessel where direct, local temperature indication is required.

The DT1-2 is a remote reading instrument, designed for mountingon a panel, either with a three hole front flange or a back flangefor surface mounting. The indicator is connected to the sensor by a3mm diameter stainless steel mineral insulated cable which can be fitted with a compression fitting if required. DT2 Digital Thermometers Using common construction to the DT1, the DT2 is a high accuracy,high resolution digital temperature indicator. The DT2 uses a precision three wire thin film PT1000 resistance element as a sensor and can be supplied in both rigid stem and remote reading variants.

Options

ATEX Approved Intrinsically Safe Versions

The addition to the range of an intrinsically safe version allows this product to be standardised in all Pharmaceutical and Petro Chemical industries. Both Thermocouple (DT1X) and RTD (DT2X) sensor instruments are offered.

4/20mA signal re-transmission

Any non intrinsically safe DigiTemp variant can be supplied as a two wire 4/20mA indicating temperature transmitter. Operating from a two wire DC power supply, the DigiTemp Tx can be config-ured during set up to re-transmit a 4/20mA signal across either the full, or part of the instruments measurement range. DigiTemp Tx is supplied with a 2 metre long connecting cable.

MAX / MIN temperature logging

Both DT1 and DT2 DigiTemp can be specified with MAX/MIN temperature logging.

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| Pressure Gauges10

Pressure Gauges• Rugged design & construction• Choice of case styles and mountings• Analogue and Digital versions available• Wide choice of measuring ranges• Electrical control options

With the acquisition of the pressure gauge manufacturer Sydney Smith Dennis (SSD) in 1998, Rototherm’s range of pressure gauges dramatically increased to include gauges to suit most industrial applications.

Process GaugesA wide range of process gauges are offered including stainless steelcased Elite safety pattern gauges and high corrosion resistant DMCcased pressure gauges. Low range capsule gauges are also offered.

Differential Pressure GaugesRototherm manufactures a range of high quality, cost effective andreliable differential pressure gauges designed to measure thedifference in pressure between two points in a system and show it ona single dial gauge such as differential pressure across an orifice plate.

Digital Pressure GaugesDigiGauge Digital Pressure Gauges offer high accuracy and a 4 digitdisplay - which enables it to be used as a digital standard test gauge.

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Model DMC Safety Pattern Pressure Gauges 100 (4), 150 (6) Dough Moulded Compound SS M � x � �

Model SPG Safety Pattern Pressure Gauges 100 (4), 150 (6) 304 Stainless Steel(316 Stainless Steel) SS M � � � �

Model SPGA Safety Pattern Pressure Gauges 63 (2.5), 100 (4), 150 (6), 200 (8), 250 (10), 300 (12) Aluminium BB

SS � � � x

Model TURRET Safety Pattern Pressure Gauges 115 (4.5) Phenol SS M � x � x

Model RPG Process Pressure Gauges 63 (2.5), 100 (4), 150 (6) 304 Stainless Steel(316 Stainless Steel)

BB SS M

� � � �

Model RCG Low Range Capsule Pressure Gauges 100 (4), 150 (6) 304 Stainless Steel

(316 Stainless Steel)BB SS x � � x

Model DPG Differential Pressure Gauges 50 (2), 63 (2.5), 80 (3), 100 (4),112 (4.2) 115 (4.5) 150 (6)

304 Stainless Steel(316 Stainless Steel)

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Model DG1 DigiGauge Digital Pressure Gauge 100 (4) 304 Stainless Steel

(316 Stainless Steel) SS x x � x

� = available option x = not available AL = Aluminium BB = Non Ferrous M = Monel SS = Stainless Steel

The DigiGauge has been designed to cover a wide range of test andmeasurement applications with pressure ranges from vacuum to 400bar.

Pressure Gauges Features

www.rototherm.co.uk

NS

SPG “Elite” Safety Pattern Pressure Gauge • Available in 100mm and 150mm dial sizes• Full safety pattern to EN837• Class 1 Accuracy to EN837• Available with stainless steel and Monel wetted parts

The Rototherm “Elite” SafeGauge, safety pattern pressure gauge incor-porates a series of unique features that have given rise to new standards of safety and sealing.

All SafeGauges with the exception of the back entry types can be glycerine filled without the need for any modification. A damped movement to reduce the effects of vibration isoffered as an option.

The back plate features a specially designed membrane forming a per-fect seal every time -compensating for any atmospheric changes that could effect the calibration of the gauge.

ApplicationFor increased safety with gaseous media.

±0.25%

DMC Cased Safety Pattern Pressure Gauge • Available in 100mm and 150mm dial sizes• DMC case has high resistance to atmospheric and chemical corrosion• DMC case can withstand 160ºC direct heat without distortion.• Full safety pattern to EN837• Adjustable micrometer pointer available• Class 1 Accuracy to EN837• Simple installation and low maintenance• Available with electrical contact head systems• Can be used inconjunction with Rototherm Diaphragm Seal Units

The ideal instrument for petrochemi-cal applications both on and offshore.

DMC (Dough Moulded Compound) material has a high resistance to atmospheric and chemical corrosion and high temperatures, being able to withstand 160ºC direct heat withoutdistortion.

ApplicationFor gaseous and liquid agressive, non-viscous and non-crystallising media.For increased safety with gaseous media.

NS ±0.25%

SPGA Aluminium Case Safety Pattern Pressure Gauge • Available in 63mm, 100mm, 150mm, 200mm, 250mm and 300mm dial sizes• Full safety pattern to EN837• Class 1 Accuracy to EN837• Choice of wetted parts materials - non ferrous or stainless steel• Available to Defence Standard 66/2 latest issue• Available as a high accuracy (±0.25%) precision test gauge

Used predominantly in power gen-eration, marine and defence applica-tions, these solid front, safety pattern pressure gauge form the basis of the Rototherm range of gauges manufac-tured to Defence Standard 66-2.

SPGA gauges are also available as Class 0.25 accuracy test gauges with 150mm, 200 mm, 250mm and 300mm dial sizes.

We also offer a range of gauges with 200 mm and 250 mm dial size with mild steel cases painted black.

ApplicationFor gaseous and liquid agressive, non-viscous and non-crystallis-ing media.For increased safety with gaseous media.

S ±0.25%

TURRET Style Safety Pattern Pressure Gauge • 115mm (4.5”) dial size• Phenolic case has high resistance to atmospheric and chemical corrosion• Full safety pattern to EN837• Available with stainless steel or Monel wetted parts• Class 0.5 Accuracy to EN837 (dry gauges)

Turret style gauges are used exten-sively in harsh environments - primar-ily those found in chemical and off shore industries.

As part of their design, turret gauges are suitable for both direct and surface mounting, moulded spacer legs at three fixing points allow the back to blow out, even if the gauge is surface mounted.

Gauges are supplied as standard dry and sealed for liquid filing, or can be supplied ready filled.

ApplicationFor gaseous and liquid agressive, non-viscous and non-crystallising media.For increased safety with gaseous media.

S

11

N

S NFull Safety Pattern to EN837

Intrinsically Safe ATEX approved

Wetted parts available to NACE

Liquid Filling Option

Available with Electrical Contacts

Pressure Gauges- key to symbols

Available to purchase online

RPG Stainless Steel Cased Pressure Gauges • Available in 63mm, 100mm, and 150mm dial sizes• Adjustable micrometer pointer as standard (not 63mm)• Field liquid fillable• Class 1 Accuracy to EN837 (63mm dial Class 1.6)• Simple installation and low maintenance• Available with electical contact head systems (100 and 150mm dial size only)• Can be used in conjunction with Rotothem Diaphragm Seal Units

A range of economically priced 63mm, 100mm and 150mm nominal size pres-sure gauges ideally suited to most industrial applica-tions where accuracy and durability is required.

Gauges are available with either brass/bronze internals or all stainless steel internals.

A number of optional accesories are available either as factory fit-ted or retro fitted - these include diaphragm seal units, electricalcontact head systems, syphons, overrange protectors, snubbers and additional pointers

Model RCG (Low range capsule version)A range of economically priced RCG capsule pressure gauges with 100mm and 150mm dials are ideally suited to measuring lowrange pressures in dry, gaseous media.

ApplicationFor gaseous and liquid media.For adverse sice conditions where pulsation or vibration exists (for liquid filled gauges)

N

TPG High Accuracy Precision Test Pressure Gauges • Available in 150mm, 200mm, 250mm and 300mm dial sizes• Choice of case style - Aluminium, DMC (150mm) and stainless steel (150mm)• Full safety pattern to EN837• Class 0.25 Accuracy to EN837• Supplied with factory calibration certificate (traceable to National Standards)

The Rototherm range of precision test gauges offers a choice of case materials and dial sizes.

Each gauge is hand built to the high-est standards and is supplied with a mirror dial, knife edged pointer and factory calibration certificate as standard.

As well as high accuracy analogue gauges, Rototherm is able to offer the DigiGauge Digital Pressure Gauge with 0.2% full scale accuracy.

ApplicationFor gaseous and liquid media, particularly for testing and calibration

±0.25%

DigiGauge Digital Pressure Gauges • High Accuracy ±0.2% full scale• Stainless steel IP67 case• Long battery life - 1 year continuous operation from 2 AA cells• Wide selection of pressure ranges from vacuum to 400 bar• 4 to 20mA output option available• Intrinsically safe versions available• Supplied with calibration certificate traceable to National Standards• Available with MAX and MIN pressure readings

High accuracy and a 4 digit dis-play enables the DigiGauge to be used as a digital standard test gauge,replacing less accurate, some-times fragile analogue test gauges. Factory calibration certificates traceableto National Standards are provided and UKAS calibration cer-tificates can be supplied if required. All standard DigiGauge’s are cali-brated in a controlled environment at 20ºC ± 3ºC. Temperature compen-sated sensors are fitted as standard

to automatically correct zero and span drift. All versions of DigiGauge can also be specified with a MAXIMUM and MINIMUM pressure logging option.

±0.25%

| Pressure Gauges12

Pressure Gauge Accessories Rototherm offers a wide range of accessories to suit all of our pressure gauges.

These products include: • Pulsation Dampeners (Snubbers)• Syphons - pigtail and “U” pattern• Over Range Gauge Protectors• 2VG Series In-Line 2 Valve Manifold & 2VR Series Remote Mounting 2 Valve Manifold• AM413 3 Valve Manifold & AM415 5 Valve Manifold

AM4133 Valve Manifold

Stainless SteelManifold

Over-RangeGauge Protector

S

www.rototherm.co.uk 13

Differential Pressure Gauges (light to medium duty)

Model N

omin

al D

ial S

izes

Av

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in m

m

Ca

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ater

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Bo

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*

Sta

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**

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um S

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)

200DPG 50, 63, 80, 100, 115, 150 Stainless Steel

Direct, Surface, Panel, 2” pipe

Aluminium, Brass, 316

Stainless Steel

1/4” BSP or NPT female

0-0.25to

0-10 bar200

200DGR 50, 63, 80, 100, 115, 150 Stainless Steel



Stainless Steel


0-0.25to

0-7 bar200

300DGC 50, 63, 80, 100, 115, 150 Stainless Steel



Stainless Steel


0-0.075to

0-4 bar100

400DGC 50, 63, 80, 100, 115, 150 Stainless Steel



Stainless Steel


0-25to

0-600mmH2O35

600DGC 112 Stainless Steel



Stainless Steel


0-15to

0-1000mmH2O2.4

Differential Pressure Gauges (medium to heavy duty)

Model N

omin

al D

ial S

izes

Av

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in m

m

Ca

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ater

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Sta

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Max

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Pre

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e (b

ar)

DP360 100 or 150 Stainless Steel(316 option)


316 Stainless Steel

(NACE option)Monel

1/4” NPT female

1/2” BSP or NPT male

0-160 mbarto

0-25 bar

100(200 bar option)



316 Stainless Steel

(NACE option)Monel

1/4” NPT female


0-25 mbarto

0-100 mbar25



316 Stainless Steel

(NACE option)Monel

1/4” NPT female


0-160 mbarto

0-25 bar

200(400 bar option)

*other connection sizes are available via adaptors **standard accuracy = ±2% FSD (Ascending) ***standard accuracy = ±2% FSD (Ascending)

| Pressure Gauges14

DSU Diaphragm Seal Units • Available with a wide choice of threaded or flanged process connections• Wide choice of materials - including Stainless Steel, Hastelloy, Inconel, Monel• Wide choice of additional protective coatings - including PTFE and Tantalaum• Available for direct or remote mounting• Wide choice of designs from all welded to bolted construction• Suitable for a wide range of process media and conditions

The fitting of a diaphragm seal unit to a pressure gauge is recom-mended where the medium to be measured is highly viscous orcontains suspended solids or is potentially corrosive to the Bour-don Tube.

Seal units are normally connected directly to the gauge, but con-nection may be made by flexible capillary, which makes them ideal for remote pressure indication.

Flexible capillary can be used to facilitate the fitting of a gauge in a surface or panel mounting location. Maximum capillary length is 5 metres.

Pressure is transmitted from the diaphragm seal unit to the bour-don tube by a suitable filling medium, the selection of which willensure compatibility with the process and process temperature. Where it is known that the instrument will be used on processessubject to extremes of temperature, the temperature at the tap-ping point should be advised at the time of ordering.

Diaphragm seal units can be fitted to Rototherm gauge types: SPG, RPG, DMC, SPGA and Turret gauges.

Electrical Contact Heads

To provide alarm or control functions, 100 and 150mm nominal dial instru-ments can be specified with electrical contact heads mounted in a clear plastic window which replaces the standard one. The set point can be adjusted to any position on the scale with a removable key. Single and dual contacts systems are available.

Electrical contact heads provide a repeatable switching point, but the absolute accuracy tolerance of the instrument is approximately doubled by the contacts.

Electrical contact heads are availble on models SPG, RPG, DMC and SPGA. Additionally, electrical switching systems are available on all differential pressure gauges.

PTx Pressure Transmitters • Stainless steel construction• Pressure ranges up to 400 bar• DIN43650 plug for easy installation• Choice of process connections

The Rototherm range of pressure transmitters provide a standardised 4-20mA output signal by utilising a ceramic diaphragm strain gauge mounted with an amplifier in astainless steel housing.

The DIN43650 connector plugs into the transmitter, eliminating the need for soldering thus making field interchangeability an easy operation.

Temperature compensated sensors are fitted as standard to auto-matically correct zero and span drift.


Temperature AssembliesThe Rototherm range of temperature assemblies has been designed for all industrial applications and is manufactured in strict accordance with the companies ISO 9001:2000 Quality System. The range includes probes suitable for direct insertion into processes without protective thermowells and full assembles complete with screwed or flanged thermowells and connection heads.

Connection HeadsOur comprehensive range of connecti on heads provides the best environmental protecti on for the electrical terminals on terminal blocks or temperature transmitters fitted to resistance thermometers or thermocouple inserts.

Temperature TransmittersTemperature transmitters are used to convert the primary sensing signal, usually a resistance change for RTD sensors or EMF for thermocouples, into a standard current signal of 4-20mA. We offer a comprehensive range of temperature transmitters suitable for thermocouples or platinum resistance thermometers (RTD), these transmitters may be either head or rack mounted. Temperature ranges may be factory set or user adjusted. (Programmable, intrinsically safe, Hart®, Profi bus® and Foundation Fieldbus® communication versions are available).

Mineral Insulated ThermocouplesA Thermocouple consists of two electrical conductors of dissimilar material connected at one end (the hot junction), the two free ends are connected to the measuring instrument via a reference junction (the cold junction).

The connection of these two materials provides an electromotive force (emf).

Mineral Insulated Resistance ThermometersA Resistance Thermometer is a temperature sensor constructed from resistance wire wound into an element. It is used to measure temperature by means of a change in the electrical resistance with a rise or fall in temperature. The mostpopular wire used in Resistance Thermometers is platinum, although nickel or copper can also be used.

Lagging ExtensionsLagging extensions are available in a wide range of lengths, sizes and fittings. Materials include Carbon Steel and Stainless Steel. They allow the con-nection head to be positioned away from the heat source, or through insulating lagging. Nipple/Union/Nipple and Breakaway couplings allow rapid disconnection for testing, and orientation.

ThermowellsThermowells are used extensively in the power, process, pharmaceutical and petrochemical industries. They are used to protect temperatureindicators and sensors from process media and enable servicing or replacement of sensors without the need to shut down plant.

Thermowells are available fabricated from tube or drilled from barstock or forgings, full material certi fi cati on, including original mill and suppliers materials certifi cates can be provided. If required NACE standard MR-01-75 requirements can be met.

Our custom-design ability puts us ahead of the competition for providing thermowells. As part of an assembly or as a replacement, we can provide thermowells of any size, material and specification. As part of our solution we can also offer stress and frequency calculations to ensure you have the correct design for the job.

Information - ATEX Zones (Vapours & Gases)

Safe Area

A domestic domain such as a house would be classed as safe area where the only risk of a release of explosive or flammable gas would be the propellant in an aerosol spray. The only explosive or flammable liquid would be paint and brush cleaner. These are classed as very low risk of causing an explosion and are more of a fire risk (although on rare occasions gas explosions in domestic property are known to occur). Safe areas on chemical and other plant are present where the hazardous gas is diluted to a concen-tration below 0.25% of its lower explosive concentration limit.

Zone 2 AreaThis is a step up from the safe area. In this case it has been decided that in this zone the gas, vapour or dust would only be present under abnormal conditions (most often leaks under abnormal conditions). As a general guide, unwanted substances should only be present under 10 hours/year or 0–0.1% of the time. Explosion safety compliant equipment, should be used.

Zone 1 AreaThese areas are where special or classified electrical equipment must be used. It is expected that the gas, vapour or dust will be present or expected for long periods of time under normal running. As a guide this can be defined as 10–1000 hours/year or 0.1–10% of the time. Explosion safety equipment that has a higher safety level than Zone 2 equipment must be used.

Zone 0 AreaThis is the worst scenario as gas or vapour is present all of the time (over 1000 hours/year or >10% of the time). Although this is the worst case it is very rare that a zone 0 area will be in the open. Usually this would be the vapour space above the liquid in the top of a tank or drum.

| Temperature Assemblies 16

Connection HeadsH70 Connection Head • Choice of Materials- Stainless Steel, Cast Iron & Aluminium• Weatherproof IP68 and IP66• Choice of Process Entries• Flameproof - EEx de Certified• EExe Certified• EExnA Certified• Safety Chain

The Model H70 is a heavy duty IP68 rated connection head which provides environmental protection for the electrical terminals on terminal blocks or temperature transmitters fitted to resistance thermometers or thermocouple insets. The connection head can be specified as either weather-

proof IP68 and IP66 or ATEX Approved Flameproof EEx de IIC T6 when supplied with a suitable Thermocouple Instruments sensor. The screwed lid is available in two basic configurations, one of which may be provided with a glass window (shown above right) to allow the use of a temperature transmitter with integral loop powered indicator. Versions with extended lids are also available.

KNY Connection Head • General Purpose• Aluminium Alloy Construction• Weatherproof IP65• Suitable for Terminal Blocks or Temperature Transmitters

The model KNY is a general purpose epoxy painted, die cast aluminium connection head. It has an ‘O’ ring sealed screwed lid, with a stainless steel retention chain.

The KNY has an Ingress Protection rating of IP65. Versions with extended lids are also available.

BUZ Connection Head • General Purpose• Aluminium Alloy Construction• Weatherproof IP67• Range of Process and Cable Entries• Suitable for Terminal Blocks or TemperatureTransmitters

Model BUZ is a low cost, general purpose connection head which accommodates either a standard Ryton or ceramic ter-minal block, or a temperature transmit-ter. The BUZ is of an aluminium alloy construction, and may be supplied with a variety of process and cable connections. The BUS version is also available with a quick release clamp.

TDMC Connection Head • Heavy Duty• DMC Construction• Weatherproof IP65• Choice of Process Entries• Self certified ExnA

The Model TDMC is a heavy duty IP65 weatherproof connection head. The DMC construction makes it resistant to most chemicals and corrosive atmospheres, and is therefore suited for use on Chemi-cal and Petrochemical complexes. The TDMC is available with a wide range of sensor assemblies. This Model has become an Industry Standard and is widely specified by Multi-national Companies.

Model Material Process Entries Cable Entries IP Rating Certification

BUZ LM6 Aluminium Alloy with hinged lid M24, 1/2” BSP M20, PG16 IP67 None

TDMC DMC Moulded natural black finish M24, 1/2” BSP M20, PG16 IP65 ExnA

KNE / KNY Aluminium Alloy 1/2” BSP M20, IP65 None

H70 316 Stainless Steel, Aluminium, Cast Iron 1/2” API, NPT & BSP 1/2” NPT, 3/4” NPT, M20 IP66 / IP68 EEx de, EExe, EExnA

Connection Head Features

www.rototherm.co.uk

Temperature TransmittersModel TR12 Digital Temperature Transmitter • Universally programmable for RTDs, Thermocouples, Resistance - sensor, mV - sensor• Output linear to temperature with input signal from RTDs and Thermocouples• Analog output 4 … 20 mA, invertible, 2 - wire design• Signalling configurable for sensor burnout and sensor short

circuiting• Ex class protection, intrinsically safe ATEX• Approved - EEx ia llC T4 / T5 / T6, EExnA, EExd (when fitted in H70 connection head)• EMC Conformity per - EN 61326:1997/P1:1998/P2:2001 - NAMUR NE 21

The digital temperature transmit-ter TR12 range is designed for universal industrial use. Comprehensive configuration possibilities, for example, type of sensor, measuring range and error signalling, high accuracy, galvanic isolation and EMI protection char-acterize these transmitters. The compact head mounting case fits in almost any DIN connecting head.

During configuration any one of 17 input signals can be selected. Measured temperatures are from - 200 °C up to + 2300 °C.

17

DIN

Model TR24 Temperature Transmitter • Configurable with Windows® PC without sensor simulation• Analogue signal processing, ideal for multiplex systems• Quick response <1 ms to 90%• Sensor burnout signalling according to NAMUR NE 43• Electromagnetic compatibility according to NAMUR NE 21• Measuring span from 20 K• Compact design

Temperature transmitter for Pt100 in 2 or 3 wire connection with 4...20mA analogue output (loop powered 2 wire technique) The TR24 temperature transmitter combines the known quick re-sponse of an analogue transmitter with the flexibility of configuration by means of a Windows PC.

The quick stabilisation of the output current after excitation voltage has been applied enables the use of this transmitter in multiplex systems. Setting of the measuring range, type of sen-sor and sensor burnout behavior takes only a matter of seconds thanks to the easy to use Windows configuration software. Time consuming adjustments and sensor simulation are not required for this transmitter.

Model Input DIN Rail Mounting Option Display Certification

TR12 Universal Input - RTD, Thermocouple, Resistance & mV Yes Not available EExia

ExN

TR24 RTD PT100 Yes Not available None

TR32 Universal Input - RTD, Thermocouple, Resistance & mV Yes Not available

EExiaEExnEExd

TR48 RTD & Thermocouple - Fixed Range Yes Not available EExia / EExd*

DLI1 4 to 20 mA Not available Yes - 3.5 digit LCDHeight 12.5mm EExia

*when fitted into a Rototherm H70 connection head

Temperature Transmitters Features

DINCE Conformity DIN Rail Mounting Available HART Communication Protocol

Temperature Assemblies - key to symbols

Intrinsically Safe ATEX approved

| Temperature Assemblies 18

Model TR32 Digital Temperature Transmitter

• HART® Protocol• ATEX Approved• Universally programmable for 1 or 2 sensors• Output linear to temperature with input signal from RTDs and Thermocouples• Custom specific linearisation with max. 32 points for sensors with ohms or mV output• Analog output 4 … 20 mA, invertible, 2 - wire design• Signalling in accordance with NAMUR NE43• Sensor break detection in accordance with NAMUR NE89• Ex class protection, intrinsically safe• EMC Conformity per - EN 61326-1:2006 & EN 61326-2-3:2006 NAMUR NE 21• Isolation voltage 1200 VAC between sensor and current loop• 95 % Rh protection, moisture condensation permissible• TÜV certified SIL for protective equipment • Configurable via: HART® Communicator & Windows®- • CE Conformity

The TR32.xS transmitters are designed for universal use in the process industry. They offer high accuracy, galvanic isolation and excellent EMI protection. When configured for a sensor with redundancy (Dual sensor), on a sensor failure it will automatically change over to the working sensor. Furthermore there is the possibility to activate Sensor Drift Detec-tion. With this, an error signal occurs when the magnitude of the temperature difference between Sensor 1 and Sensor 2 exceeds a user-selectable value.

The TR32 transmitter also has additional sophisticated supervisory functionality such as monitoring of the sensor wire resistance and sensor-break detection in accordance with NAMUR NE89 as well as monitoring of the measuring range. Moreover, this transmitter has comprehensive cyclic self monitoring functionality. The dimensions of the head-mounted transmitter match the Form-B DIN connecting heads with extended mounting space, e.g. Rototherm’s H70 or H80. The rail-mounted transmitters can be used for all standard rack systems in accordance with IEC 60715. The transmitters are delivered with either a basic configuration or configured according to customer specifications.

DIN

Model TR48 Temperature Transmitter • ATEX Approval• EExia / EExd (when fixed in H70 Head)• Radio Frequency Immunity from 20 to 1000 MHz• Thermocouple and RTD Inputs• Differential Transmitters• Open Circuit Protection• Cold Junction Compensated

The model TR48 temperature transmitter offers a convenient method of increased system accu-racy, while reducing costs through the elimination of long runs of expensive compensating cables. The transmitter requires only two wires which carry both supply voltage and current signal, and has a high degree of immunity to interference and noise pick-up.

The TR48 temperature transmitter is also available in a DIN rail mounted version. Manufactured to the same high specification with easily adjustable zero and span potentiometers, this model is ideal when larger numbers are required to be rack mounted.

DIN

Model DLI1 Loop Powered Indicator • Loop powered• Less than 1V required from loop• ATEX approved for us in IS loops• IP68 enclosure available• Field programmable• Wide range of Zero offsets• RFI protected• 12.5mm high display• Operating temperature -10 to +70ºC• Low cost

Model DLI1 is a loop powered digital indicator, which can be connected in series with any 4-20mA current loop and will display the current flowing in meaningful engineering units. The large 3 ½ digit display is easy to read and the whole device introduces a volt drop of less than 1V at full scale, which means it can be used where several other devices are already in the loop.

The Zero and span are independently adjustable so the indicator can be can be calibrated to display any range within the +/-1999 range, large positive and negative zero offsets are easily accom-modated. The indicator can be supplied in an EEx de approved, IP68 enclo-sure in a variety of materials to suit the needs of the environment in which it is installed. Extended versions allow a transmitter and indicator to be conveniently mounted as a single unit.

www.rototherm.co.uk

Temperature SensorsMineral Insulated Resistance Thermometers • High Accuracy and Stability• Good Linearity• No Compensating Cable• No Cold Junction Compensation

Platinum Resistance Sensors offer the highest standard of accuracy and stability of any temperature sensor. They also exhibit good lin-ear response, covering a tempera-ture range from -200ºC to +650ºC. They are easy to apply and require no special cables or cold junction reference.

Platinum resistance sensors are finding increasing favour in indus-try, where their high accuracy, repeatability and stability are vital. Our minerally insulated RTDs are manufactured from superior grade materials. In addition we provide technical expertise, advice, design and a manufacturing facility second to none.

Mineral Insulated Thermocouples • Wide choice of Sheaths, Cold and Hot Ends and Conductor Types• Approval to Power Station Standards• Standard and Customised Designs• Computerised Calibration Available• Special Tolerances to order

Our minerally insulated thermo-couples are manufacturedfrom superior grade materials. We are approved to manufacturethermocouples to BS EN 61515. We provide technicalexpertise, advice, design and a manufacturing facilitysecond to none.

19

Type Conductor Materials Standard Tolerances

K Nickel-Chromium/Nickel-Aluminium

40ºC to 333ºC : ± 2.5ºC333ºC to 1200ºC : ± 0.75%

J Iron/Copper-Nickel

-40ºC to 333ºC : ± 2.5ºC333ºC to 750ºC : ± 0.75%

T Copper/Copper-Nickel

-40ºC to 133ºC : ± 1ºC133ºC to 350ºC : 0.75%

E Nickel-Chromium/Copper-Nickel

-40ºC to 333ºC : ± 2.5ºC333ºC to 900ºC : ± 0.75%

N Nickel-Chromium/SiNickel-Silicon

40ºC to 333ºC : ± 2.5ºC333ºC to 1200ºC : ± 0.75%

B Platinum-30%Rhodium/Platinum-6%Rhodium

0 to 600ºC : ± 1.5ºC600ºC to 1700ºC : ±0.25%

R Platinum-13%Rhodium/Platinum

0 to 600ºC : ± 1.5ºC600ºC to 1600ºC : ±0.25%

S Platinum-10%Rhodium/Platinum

0 to 600ºC : ± 1.5ºC600ºC to 1600ºC : ±0.25%

Thermocouple Types

Resistance Detectors All our resistance detectors/elements are manufactured by RTD Products, a specialist division British Rototherm.

Detectors manufactured by RTD Products are of the partiallysupported wire-wound type. These offer the best available balance of accuracy, stability and ruggedness.

The standard* Platinum RTD Product Range is available in: • Single or Duplex assembly• IEC Classes: W0.6, W0.3, W0.15, W0.1, W0.06 and W0.03• DIN Classes: Class C, B, A, 1/3 Din, 1/5 Din, 1/10 Din• Lead length 6mm (+/-1mm)• Temperature Range: -200°C to +660°C• Pre-aged• Standard Calibration Point: 5mm from ceramic body• Calibrated to IEC specifications• Manufactured and tested to IEC specifications• All RTDs are partially supported by aluminum oxide glass• All RTDs are supplied with 2 lead wires for single and 4 lead wires for duplex to avoid resistance pollution• All products are batch coded in order to ensure traceability• Products are packaged to ensure safe and damage free delivery

RTD Products also provides Pt100 elements with lead wires attached. Along with RTDs of the highest quality we offer a dedicated and knowledgeable sales team who are keen to discuss best options and solutions for your needs and an Aftersales service which includes the customer service team and technical support team.

ProductsRTD

Type Materials

PT100 Platinum, 100Ω at 0ºC



Cu100 Copper, 100Ω at 0ºC

Ni100 Nickel, 100Ω at 0ºC

RTD Types

| Temperature Switches20

Temperature SwitchesRototherm/HNL manufacture a wide range of temperature switches with both electrical outputs and pneumatic outputs. These include ATEX certified temperature switches suitable for use in hazardous areas.

Series 700 is a mechanical temperature switch - the Series 800 tempera-ture switch is an electronic device that also functions as a temperature indicator and transmitter. Both are available with aluminium or stainless steel housings and either direct or capillary mounting.

Series 700

• Ranges from -50 to +400 Deg C• Wide range of output switches• Direct and remote mounting versions available• Field Adjustable• Excellent accuracy and reliability

Rototherm/HNL’s most popular temperature switch Mechanical Tempera-ture Switching / Wide selection of Ranges and Outputs / Electrical & Pneumatic outputs For each of these both Electrical and Pneumatic outputs are available. The electrical outputs are available for switches to be used in Hazard-ous (potentially explosive atmosphere) areas (Exd, ExnC & ExtD, Exia or I.S. compatible) or for Standard (non-hazardous) areas.

Due to the wide range of options available, a Series 700 switch can be supplied for most applications. In addition to the standard options detailed here HNL can design a switch to your own specification if required.

Series 700 EExd Version

These temperature switches are designed to provide electrical output switching for Potentially Explosive Atmosphere applica-tions.

The Certifications available are listed below:-

Exd Switches (Cert. No: Baseefa07ATEX0055X)Enclosures are certified Exd IIC T4/T5/T6 to EN60079-0 & EN60079-1.

ExnC & ExtD Switches (Cert. No: HNL07ATEX0001X)Enclosures are certified EExnC IIC T4/T5/T6 & ExtD A22 IP66 100°C to EN 60079-0, EN 60079-15, EN 61241-0 & 61241-1.

Exia Switches(Cert. No: Baseefa06ATEX0231X)Enclosures are certified Exia IIC T5/T6 to EN 60079-0 & EN 50020.

I.S. CompatibleSeries 700 switches are classified as simple apparatus, allowing use in an I.S. circuit without individual certification.

Series 700 Pneumatic Control Version

Pneumatic Output Temperature Switches provide the switching of a compressed gas supply (generally air) at a pre-determined

temperature.The different pneumatic output switching options are listed below:-

Code 61 - the pilot supply is used to operate a 3 port changeover valve. Bulkhead connections to all 3 ports of this valve are on the top of the enclo-sure as shown in the photo opposite. This switch has a fixed switching differential.

Code 64 - as code 61 above but with an adjustable switching differential.

Code 67 - primarily used when the pilot supply is natural gas as it does not have a continuous consumption of pilot gas. This switch has only two bulkhead connections - the pilot supply and the output. The output pressure is zero below the switch set-point and equal to the supply pressure above it.

Code 68 - as code 67 above but with the reverse output - the output pressure is equal to the supply pressure below the switch setpoint and zero above it.

Code 71 - Primarily used for providing an input into low pres-sure (1.4 bar / 20 p.s.i.) logic systems. This switch has only two bulkhead connections - the pilot supply and the output. The output switch can be configured to provide an output on either a rising or falling pressure.

Code 81 - as code 61 above but for lower pressure operation.

Series 700 Standard Version

These temperature switches are designed to provide electrical output switching for non-hazardous area applications.

A large selection of output switches are available providing the options listed below:-

Fixed or Adjustable Differential Single (S.P.D.T.) or Twin Switch (2 off S.P.D.T. effectively D.P.D.T.)Gold or Silver Contacts

EngineeringHNL


Series 800

The Series 800 Smartstat is a microprocessor controlled switch, trans-mitter and indicator, which enables several instruments to be replaced with a single device. Smartstats are available for the measurement of pressure / differential pressure (P & DP) and temperature (T).

Replacing a transmitter, switches and a gauge with a single Smartstat reduces equipment costs. Additionally there are reductions in documen-tation, installation time/ fittings/cabling, and calibration/maintenance costs.

Increased Accuracy/RepeatabilityThe Smartstat provides greater accuracy and repeatability than a conventional mechanical switch. Very large and very small switching dif-ferentials can be achieved without compromising accuracy.

Ease of CalibrationPushbutton calibration of switch setpoints and 4-20mA calibration can be carried out on site without additional test equipment or tools.

Additional FeaturesBecause the Smartstat is microprocessor based additional features are easily provided through the software including:

• Programmable switching delays - the switching on or off (or both) of the relays may be delayed from 0.5 seconds to 15 minutes. This is particularly useful for preventing unwanted switching due to pressure transients.• Display of MAXimum and MINimum pressures recorded by the Smartstat.• Display of transmitter output in mA.• Reversal of transmitter output 20-4 mA instead of 4-20 mA.• Square-root extraction to provide 4-20mA output proportional to flow using a DP Smartstat.• Displayed units of measurement - can be changed by the user as required.

Series 800 Smartstat Temperature Switch

There are some temperature switching applications that are very demanding due to the need for :-

• Very high (or low) temperatures.• High accuracy and repeatability.• Very large (or small) switching differentials.• High frequency switching operation.• Low frequency switching operation (once per year).• Regular need to change switching temperatures.

Smartstat Custom LCD Display

These requirements may exceed the capabilities of conventional mechanical temperature switches, the Smartstat was designed to overcome these problems.

• Smartstat RTD elements can be used to provide ranges from -200°C to 400°C.• Typical repeatability is 0.1%.• Two independent single-pole, double-throw (SPDT) relays are fitted in the Smartstat, the operating points of which can be set anywhere within the range. The switching differential can be set from 1 digit to 100.0% of range without loss of accuracy.• Being almost entirely ‘solid state’ the Smartstat can provide up to 100,000,000 switching operations. It can respond to changes in temperature more rapidly than a mechanical temperature switch.

• With a mechanical switch testing the operation regularly is the only way to ensure that it is operating correctly. With the Smartstat the continuous temperature display serves to indicate that the device is operating correctly and will switch when required.• Pushbutton calibration of switch setpoints can be carried out on site without additional test equipment or tools.• In addition to its function as a high accuracy temperature switch the Series 800 Smartstat also functions as a temperature transmitter and temperature indicator enabling significant cost savings as several instruments can be replaced with a single device.

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