Rel. 20120820 Applicaons: • Primary standard for defining the pressure scale in a range up to 1200 bar hydraulic • Reference instrument for factory and calibraon laboratories for the tesng, adjustment and calibraon of pressure measuring instruments • Complete, stand-alone system, also suitable for on-site use Special features: • Total measurement uncertainty to 0.025% of measured value • Factory calibraon includes traceability to naonal standards, as standard; with UKAS-calibraon possible as an opon • High long-term stability with recommended recalibraon cycle every five years • Masses manufactured from stainless steel, can be adjusted to local gravity • Compact dimensions Descripon: Proven primary standard Pressure balances / Deadweight testers are the most accurate instruments available on the market for the calibraon of electronic or mechanical pressure measuring instruments. The direct measurement of the pressure (p = F/A), as well as the use of high- quality materials enable a very small measurement uncertainty, in conjuncon with an excellent long- term stability of five years (recommended in accordance with the German Calibraon Service DKD/DAkkS). The deadweight tester has therefore been used for years in factory and calibraon laboratories in industry, naonal instutes and research laboratories. Stand-alone operaon Due to ist integrated pressure generaon and the pure mechanical measuring principle, the model is ideal for on-site use for LDW-HK LR-Cal maintenance and service. Basic principle Pressure is defined as the quoent of force and area. The core component of the is LDW-HK LR-Cal therefore a very precisely-manufactured piston- cylinder system, which is loaded with masses in order to generate the individual test points. The masses applied are proporonal to the target pressure and this is achieved through opmally graduated masses. As standard, these masses are manufactured to the standard gravity (9.80665 m/s²), though they can be adjusted to a specific locaon and also UKAS calibrated. DRUCK & TEMPERATUR Leitenberger GmbH • Bahnhofstr. 33 • D-72138 Kirchentellinsfurt • GERMANY Tel. +49 (0) 7121-90920-0 • Fax +49 (0) 7121-90920-99 • [email protected] • • www.druck-temperatur.de www.LR-Cal.net LDW-HK Deadweight Tester / Pressure Balance Hydraulic & Compact Design 1
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Rel. 20120820
Applica�ons:• Primary standard for defining the pressure scale in a
range up to 1200 bar hydraulic
• Reference instrument for factory and calibra�on
laboratories for the tes�ng, adjustment and
calibra�on of pressure measuring instruments
• Complete, stand-alone system, also suitable for
on-site use
Special features:• Total measurement uncertainty to 0.025% of
measured value
• Factory calibra�on includes traceability to na�onal
standards, as standard; with UKAS-calibra�on
possible as an op�on
• High long-term stability with recommended
recalibra�on cycle every five years
• Masses manufactured from stainless steel, can be
adjusted to local gravity
• Compact dimensions
Descrip�on:
Proven primary standard
Pressure balances / Deadweight testers are the most
accurate instruments available on the market for the
calibra�on of electronic or mechanical pressure
measuring instruments. The direct measurement of
the pressure (p = F/A), as well as the use of high-
quality materials enable a very small measurement
uncertainty, in conjunc�on with an excellent long-
term stability of five years (recommended in
accordance with the German Calibra�on Service
DKD/DAkkS).
The deadweight tester has therefore been used for
years in factory and calibra�on laboratories in
industry, na�onal ins�tutes and research laboratories.
Stand-alone opera�on
Due to ist integrated pressure genera�on and the
pure mechanical measuring principle, the model
is ideal for on-site use forLDW-HKLR-Cal
maintenance and service.
Basic principle
Pressure is defined as the quo�ent of force and area.
The core component of the isLDW-HKLR-Cal
therefore a very precisely-manufactured piston-
cylinder system, which is loaded with masses in order
to generate the individual test points.
The masses applied are propor�onal to the target
pressure and this is achieved through op�mally
graduated masses. As standard, these masses are
manufactured to the standard gravity (9.80665 m/s²),
though they can be adjusted to a specific loca�on and
Specifica�ons model LR- LDW-HK piston-cylinder systems:Cal
Specifica�ons model LR- LDW-HK base unit:Cal
Connec�on for piston-cylinder system: 3/4" BSP male
Test item connec�on: 1/2" BSP female thread, loose union connec�on, incl. adapter set to 1/4" BSP and 3/8" BSP female
threads
Material We� ed Parts: Austeni�c stainless steel, high tensile brass, nitrile rubber
Pressure transmission medium: Hydraulic fluid VG22 based on mineral oil (0.5 l included in scope of delivery)
Reservoir volume: 170 cm³
Base weight: Op�onal storage case weight:13.5 kg; 8.5 kg
Permissible opera�ng temperature: 18...28°C
Dimensions of the base: W 401 x D 397 x H 155 mm, for details see drawings on page 5
Approvals and cer�ficates:CE conformity: Pressure equipment direc�ve 97/23/EC (Module A)
Cer�ficate of Calibra�on: 3.1 calibra�on cer�ficate (traceable); op�onal: UKAS-cer�ficate of calibra�on
Transport dimensions for complete instrument:The complete instrument, in its standard version and standard scope of delivery, consists of three packages on a single pallet.
The dimensions are 1,200 x 800 x 500 mm.
The overall weight is as follows (independent from pressure range):
1) Theore�cal staring value; correspondends to the pressure value generated by the piston or the piston and its make-up weights (by their own weight).
To op�mise the opera�ng characteris�cs more weights should be loaded.
2) The smallest pressure change value that can be achieved based on the standard weight set. To reduce this, a set of trim masses is avalable as op�on/accessory.
3) The accuracy from 10% to the measuring range is based on the measured value. In the lower range, a fixed error based on 10% of the range applies.
Measurement uncertainty assuming reference condi�ons (ambient temperature 20°C, air pressure 1013 mbar, rela�ve humidity 40%). For opera�on without an
Intelligent Calibra�on Module the correc�ons must be made (manually) if required.IKMLR-Cal