Presentation Overview - · PDF filePresentation Overview 1. ... Noted manufacturer of turbine flowmeters for liquid, gas and cryogenic flow ... Turbine Rotor. Basic Principle of Operation

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Presentation OverviewPresentation Overview

1.1. Who is Hoffer Flow Controls?Who is Hoffer Flow Controls?

2.2. Show me the money (benefits)!Show me the money (benefits)!

3.3. ArenAren’’t there other flowmeters that are t there other flowmeters that are 

better?better?4.4.

How Hoffer flowmeters can help you.How Hoffer flowmeters can help you.

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Hoffer has supplied flowmeters for Hoffer has supplied flowmeters for BOPBOP’’s.s.

In fact, we have supplied well over 100 meters for BOP’s alone!

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Hoffer has supplied flowmeters for use Hoffer has supplied flowmeters for use on subsea on subsea ROVROV’’s.s.

Flowmeters monitor hydraulic fluid system performance

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Hoffer has supplied subsea flowmeters for a wide Hoffer has supplied subsea flowmeters for a wide variety of variety of tooling skids.tooling skids.

Hydrate remediation skid

BOP Intervention Skid

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Hoffer flowmeters are used onHoffer flowmeters are used on Drill ShipDrill Ship Pacific Santa Ana with Pacific Santa Ana with

ABSABS--CDS approvalCDS approval

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Hoffer flowmeters are used for a Hoffer flowmeters are used for a variety of variety of topside topside of flow applications.of flow applications.

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Why you Why you ““shouldshould”” consider using Hoffer consider using Hoffer turbine flowmeters!turbine flowmeters!

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Hoffer Flow Controls

Providing flow solutions to industry for over 40 years.

Privately‐held corporation located in  Elizabeth City, NC.

Noted manufacturer of turbine flowmeters  for liquid, gas and cryogenic flow 

measurement.

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Hoffer Flow ControlsHoffer Flow Controls

Some of the major markets servedSome of the major markets served……..

Oil & Gas Upstream and DownstreamOil & Gas Upstream and Downstream

CryogenicsCryogenics

Pharmaceuticals & BiotechPharmaceuticals & Biotech

MilitaryMilitary

AerospaceAerospace

Power ProductionPower Production

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Hoffer Flow ControlsHoffer Flow Controls

Recognized for being able to design and build Recognized for being able to design and build  custom flow meters in a short time.custom flow meters in a short time.

Examples of custom design requirements Examples of custom design requirements  include high pressure requirements (as much as include high pressure requirements (as much as 

60,000 PSIG), exotic alloys, ultra60,000 PSIG), exotic alloys, ultra‐‐high velocity high velocity  flow measurement applications (Mach 0.5) and flow measurement applications (Mach 0.5) and 

designs for harsh environments (subsea to designs for harsh environments (subsea to  15,000 FT).15,000 FT).

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Turbine Flow Meters

Turbine flow meters measure velocity. 

They work well in clean, low to mid‐viscosity  applications.

Liquid meters typically designed to measure  up to 20 feet per second.

Gas meters are designed to measure  velocities as high as 250 feet per second.

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Meter Body Pickup Coil

Hangers or Integral Flow Straightener

Thru-Shaft w/Locknuts

Coil Riser

Deflector Cones

Flat-Bladed Turbine Rotor

Basic Principle of Operation Basic Principle of Operation

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Turbine FlowmeterPerformance Characteristics

LIN

EA

RIT

Y

FLOW RANGE ATDESIGNATED LINEARITY

K-FACTOR

OUTPUT VOLTAGE (Mv)

OUTPUT FREQUENCY (Hz)

PRESSURE LOSS (PSID)

PR

ES

SU

RE

LO

SS

(P

SID

)

OU

TP

UT

FR

EQ

UE

NC

Y (

hZ

)

OU

TP

UT

VO

LTA

GE

(M

v)

K-F

AC

TO

R (

CY

C/G

AL

)

FLOW RATE

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Basic Definitions

LINEARITY:

K-FACTOR:

REPEATABILITY:

A measure of the accuracy of the device which is the maximum percentage deviation from the average K-Factor.

The number of output pulses the flowmeter produces per engineering unit of the volume throughput.

A statement of the ability of a measuring device to display the same value of a measured variable under identical conditions.

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Why use turbine meters?

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Mini-Flowmeters for low flow

liquid and gas applications.

“Premier Natural Gas Series” for custody transfer of natural gas.

3A Certified Sanitary Flowmeters for food, beverage, pharmaceutical and

bio-tech.

HO Series with MS Flared

fittings commonly used

in industry.

Providing Providing ““Application SpecificApplication Specific”” flow solutions for our customers is the key.flow solutions for our customers is the key.

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Turbine Meter Advantages Turbine Meter Advantages –– PerformancePerformance

High degree of accuracy            High degree of accuracy             (+/(+/‐‐.25% of reading) and .25% of reading) and 

great repeatability (+/great repeatability (+/‐‐.1%).1%)

Suitable for Suitable for ““custodycustody””

transfertransfer

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Turbine Meter Advantages Turbine Meter Advantages –– Response TimeResponse Time

Fast, dynamic Fast, dynamic 

response response 

timetime

Measured in milliseconds!Measured in milliseconds!

Commonly used for rocket Commonly used for rocket  propulsion propulsion 

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Turbine Meter Advantages Turbine Meter Advantages –– Shock, vibration & temp extremesShock, vibration & temp extremes

We pWe pioneered the use of turbine ioneered the use of turbine 

flowmeters on cryogenic delivery flowmeters on cryogenic delivery 

trucks in the 1970trucks in the 1970’’ss

Suitable for installation on trucks Suitable for installation on trucks 

subject to shock & vibration subject to shock & vibration 

Subject to wide operating Subject to wide operating 

temperature extremestemperature extremes

Our flow system is the Our flow system is the ““cash cash registerregister””

on many bulk delivery on many bulk delivery 

cryogenic trucks domestically and cryogenic trucks domestically and 

internationallyinternationally

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Turbine Meter Advantages Turbine Meter Advantages –– ReliabilityReliability

Metering control fluid on a BOPMetering control fluid on a BOP

Hoffer replaced Hoffer replaced ““leakingleaking””

mag mag 

metersmeters

High High ““internalinternal””

&  &  ““external external 

pressurespressures””

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Turbine Meter Advantages Turbine Meter Advantages –– Robust DesignRobust Design

Flowmeter Flowmeter ““internalsinternals””

designed designed 

to meet to meet ““high high 

shockshock””

and and 

““vibrationvibration””

MIL MIL 

standards for standards for 

US Navy.US Navy.

For use on every For use on every ““classclass””

of of US Navy ships.  Applications US Navy ships.  Applications 

include fuel measurement and include fuel measurement and 

RO water systems (seawater).  RO water systems (seawater).  

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Turbine Meter Advantages Turbine Meter Advantages Robust DesignRobust Design

FlowmeterFlowmeterInternalsInternals

Threaded InsertThreaded Insert

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Turbine Meter Advantages Turbine Meter Advantages –– Wide RangeabilityWide Rangeability

Flowmeters can be configured to Flowmeters can be configured to  provide repeatable flow ranges provide repeatable flow ranges 

with up to 100:1 turndown ratios.  with up to 100:1 turndown ratios.  

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Liquid Size SelectorFor

Standard HO Series Turbine FLowmeters

Liquid Size SelectorFor Standard HO Series Turbine Flowmeters

Flowmeter Size MAGNETIC PICKUP COIL MODULATED PICKUP COIL

DiameterDiameter(inches)(inches)

Linear RangeLinear Range(US GPM)(US GPM)

Linear RangeLinear Range(LPM)(LPM)

Repeatable Range(US GPM)

Repeatable RangeRepeatable Range(LPM)(LPM)

Linear RangeLinear Range(US GPM)(US GPM)

Linear RangeLinear Range(LPM)(LPM)

Repeatable Range

(US GPM)

Repeatable Repeatable RangeRange(LPM)(LPM)

1/4*1/4* .35.35--3.53.5 1.31.3--13.213.2 .25.25--4.54.5 .95.95--1717 .35.35--3.53.5 1.31.3--13.213.2 .0625.0625--4.54.5 .24.24--1717

3/8*3/8* .75.75--7.57.5 2.82.8--28.428.4 .3.3--99 1.11.1--3434 .75.75--7.57.5 2.82.8--28.428.4 .075.075--99 .28.28--3434

1/21/2 1.251.25--9.59.5 4.74.7--3636 .6.6--1212 2.32.3--4545 1.251.25--9.59.5 4.74.7--3636 .12.12--1212 .45.45--4545

5/85/8 1.751.75--1616 6.66.6--60.660.6 .9.9--2020 3.43.4--75.775.7 1.751.75--1616 6.66.6--60.660.6 .2.2--2020 .75.75--75.775.7

3/43/4 2.52.5--2929 9.59.5--110110 1.51.5--3535 5.75.7--132.5132.5 2.52.5--2929 9.59.5--110110 .35.35--3535 1.31.3--132.5132.5

1 4-60 15-227 2-75 7.6-284 4-60 15-227 .75-75 2.8-284

11--1/41/4 66--9393 2323--352352 33--115115 11.411.4--435435 66--9393 2323--352352 1.151.15--115115 4.354.35--435435

11--1/21/2 88--130130 30.330.3--492492 55--175175 1919--662662 88--130130 30.330.3--492492 1.751.75--175175 6.66.6--662662

22 1515--225225 56.856.8--852852 1111--275275 4242--10411041 1515--225225 56.856.8--852852 2.752.75--275275 10.410.4--10411041

22--1/21/2 2525--400400 9595--15141514 1515--500500 56.856.8--18931893 2525--400400 9595--15141514 55--500500 1919--18931893

33 4040--650650 151151--24602460 2020--800800 7676--30283028 4040--650650 151151--24602460 88--800800 30.330.3--30283028

44 7575--12501250 284284--47314731 5050--15001500 189189--56785678

MCP not recommended in 4MCP not recommended in 4”” and larger sizesand larger sizes

55 140140--20002000 530530--75707570 100100--25002500 379379--94639463

66 200200--29002900 757757--1097710977 125125--36003600 473473--1362613626

88 330330--52005200 12491249--1968219682 270270--64006400 10221022--2422424224

1010 650650--80008000 24602460--3028030280 540540--98009800 20442044--3709337093

1212 14001400--1200012000 52995299--4542045420 800800--1500015000 30283028--5677556775

NOTE: NOTE: Performance enhancement techniques are routinely applied to prodPerformance enhancement techniques are routinely applied to produce larger linear and usable flow ranges. uce larger linear and usable flow ranges. Consult with the applications group at Hoffer with your requiremConsult with the applications group at Hoffer with your requirements.ents.

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Turbine flowmeters are highly “repeatable” (+/-.1%). “Smart” Electronics can correct for non-linearity of the flowmeter.

PLOT OF TURBINE FLOWMETER CALIBRATION“K-FACTORS” (pulses/gallon)

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1% 10% 100%

Flow Rate

Accuracy

Percent of Reading

Percent of Full Scale Absolute Accuracy Becomes Worse with Decreased Flow

Linearity and repeatability are expressed in terms of Linearity and repeatability are expressed in terms of ““percent of readingpercent of reading”” rather than rather than ““percent of full scalepercent of full scale””

such as a differential pressure flowmeter.such as a differential pressure flowmeter.

Turbine Meter Advantages Turbine Meter Advantages –– Of Reading vs. Percent of Full ScaleOf Reading vs. Percent of Full Scale

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All All ““turbine flowmetersturbine flowmeters””

are not created equal are not created equal --

Some are plastic

Some are Aluminum

Some are molded

There are many

differentdesigns of“Turbine meters”

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Common Design Elements Common Design Elements –– ffor a or a

““high performance turbine flowmeterhigh performance turbine flowmeter””

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Rotor Construction Rotor Construction –– Precision MachinedPrecision Machined

All Rotor assemblies are precision machined.  All Rotor assemblies are precision machined.  

Hoffer does not use cast rotors.Hoffer does not use cast rotors.

Cast rotors are Cast rotors are ““heavierheavier””

than rotors machined than rotors machined  from solid bar stock.  Heavier rotors mean slower from solid bar stock.  Heavier rotors mean slower 

dynamic response to changes in flow rates. dynamic response to changes in flow rates. 

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Rotor Construction Rotor Construction –– Rotor DesignRotor Design

Hoffer uses flat rather than curved blades Hoffer uses flat rather than curved blades  on its rotorson its rotors

Curved blades produce a higher pressure Curved blades produce a higher pressure  drop.drop.

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Rotor Construction Rotor Construction –– Rotor DesignRotor Design

Machined rotors can be Machined rotors can be ““customizedcustomized””

with with  thicker blades for use in abrasive servicesthicker blades for use in abrasive services

The blade The blade ““lengthlength””

may be adjusted to may be adjusted to  accommodate larger particulate.  This approach accommodate larger particulate.  This approach 

is commonly utilized in the design of our oil is commonly utilized in the design of our oil  patch flowmeters.  patch flowmeters.  

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Optimization of Optimization of ““flow rangeflow range”” -- Supplying various blade angles and rotor designsSupplying various blade angles and rotor designs

Hoffer provides four different blade angles (15, 20, 25 & 30 degree) for each size meter within our HO Gas 

product line to optimize the ideal flow range selection. 

The “steeper”

the blade angle; the lower the flow rate  capability.  

We offer “bladed”

and “rim”

type rotor assemblies.  Rim rotors are typically specified for custody transfer 

applications and produce more “pulses”

(better  resolution).

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Bladed Rotor AssemblyBladed Rotor AssemblyRim Rotor Assembly

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In conclusion, you should consider using turbine flowmeters if…

Accuracy is important 

You need a robust flowmeter

You require dynamic response to changes in flow  conditions

You require a wide flow range

You have a specific “footprint”

(space) in which the  flowmeter must fit

You want a flowmeter that is light in weight and easy to install

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How can we help your company take advantage of our solutions?