LR-Cal LDW-H deadweight tester / pressure balance
hydraulic, up to 1,400 bar
Accuracy up to ±0.006% of measured value

Brochure

• 

  Schema: LR-Cal LDW-H Einzel-Kolbenzylindersystem

  Scheme: LR-Cal LDW-H
  single piston system for ranges 120 to 300 bar

• 

  Schema: LR-Cal LDW-H Doppel-Kolbenzylindersystem

  Scheme: LR-Cal LDW-H
  double piston system for higher pressure ranges

• Description

  LR-Cal LDW-H description

  Proven primary standard
  Pressure balances (deadweight tester) are the most accurate devices available on the market for the calibration 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 allow a very small measurement uncertainty in combination with an excellent long-term stability of 5 years (recommendation according to the German Calibration Service (DAkkS). Pressure balances / deadweight tester have been used for years in factory and calibration laboratories of industry, national institutes and research institutes.

  Autonomous mode of operation
  Due to the integrated pressure generation as well as the purely mechanical measuring principle, the LR-Cal LDW-H deadweight tester is also ideally suited for on-site use, maintenance and service.

  Basic principle
  Pressure is defined as the quotient of force and area. Accordingly, the heart of the LR-Cal LDW-H pressure balance is a very precisely manufactured piston/cylinder system, which is loaded with mass supports to generate the individual test points.

  The mass support is proportional to the target pressure and is achieved by optimally graduated disc weights. These disc weights are manufactured as standard to the standard acceleration of gravity of 9.80665 m/s², but can also be optionally adapted to their specific location of use and also DAkkS-calibrated.

  Simple mode of operation
  In the sturdy basic unit, even large test volumes can be easily filled and compressed with the integrated pre-pressure pump and 250 ml tank. For further pressure build-up, a very precisely adjustable spindle pump with internal rotating spindle is installed.

  As soon as the measuring system is in a floating state, there is a balance of forces between the pressure and the mass supports. Due to the excellent workmanship of the system, this pressure remains stable for several minutes, so that the pressure values for comparative measurement or even more extensive adjustment work can be carried out on the test specimen without any problems.

  Two basic unit versions
  The LR-Cal LDW-H deadweight tester is available in two versions, both with integrated pressure supply:

  • Basic unit, hydraulic - "Standard
    Type LR-Cal LDW-H-S
    up to max. 1,200 bar (16,000 psi)
    Pressure transmission media: mineral oil, optional: sebacate oil, brake fluid, Skydrol or Fomblin oil
  • Basic unit, hydraulic - "high pressure
    Type LR-Cal LDW-H
    up to max. 1,400 bar (20,000 psi)
    Pressure transmission media: mineral oil, optional: sebacate oil

  Standardmäßig sind beide Grundgeräte-Ausführungen mit einem Anschluss für das Kolbenzylindersystem mit Außengewinde G 3/4 ausgerüstet. Beim Grundgerät Ausführung "Standard" ist optional eine Schnellspannaufnahme für das Kolbenzylindersystem erhältlich. Diese ermöglicht einen schnellen und sicheren Wechsel des Kolbenzylindersystems ohne Werkzeug.

  The test specimen is connected to a quick-connect system without tools. Due to the free-running knurled nut, the test specimens can be aligned as required. A threaded insert with a 1/2" BSP female thread is included as standard. Further threaded inserts are optionally available, with which all common pressure gauges can be connected.

  Special features:

  • Total measurement uncertainty up to ±0.006% of measured value
  • With traceable factory calibration certificate as standard (option: DAkkS calibration certificate)
  • Very high long-term stability, recommended recalibration only every 5 years
  • Stainless steel mass disks, optional adaptation to local gravitational acceleration of the application site
  • Compact dimensions

  Applications:

  • Primary standard for the measurand pressure, up to max. 1,400 bar (20,000 psi), hydraulic
  • Reference instrument for factory and calibration laboratories for testing, adjusting and calibrating pressure measuring instruments of all types
  • Self-sufficient complete system, also suitable for on-site use.

• Piston cylinder system: explanations

  LR-Cal LDW-H piston cylinder system

  Piston cylinder systems for the LR-Cal LDW-H pressure balance are available - depending on the measuring range - in two fundamentally different versions:

  • Single piston system
    Type LR-Cal LDW-H-EKZ
    for pressure ranges 120 bar to 300 bar
  • Double piston system
    Type LR-Cal LDW-H-DKZ
    for all higher pressure ranges.

  High accuracy over a wide measuring range
  The LR-Cal LDW-H-DKZ double piston-cylinder systems have two measuring ranges in one housing with automatic measuring range switching from the low-pressure to the high-pressure piston. This provides the user with an extremely flexible measuring device that can cover a wide measuring range with high accuracy using only one piston-cylinder unit and one mass set. Furthermore, two test points can be approached by the operator with only one mass support.

  The pistons and cylinders are made of hardened steel and tungsten carbide, respectively. These material pairings have low coefficients of pressure and temperature expansion, which result in very good linearity of the effective piston cross-sectional area and high accuracy.

  Piston and cylinder are very well protected against contact, shock or contamination from the outside in a solid housing made of stainless steel or hardened tool steel. At the same time, an overpressure safety device is integrated, which prevents the piston from being pushed out vertically and thus prevents damage to the piston-cylinder system in the event that disk weights are removed under pressure.

  The disk weights are stacked directly onto the piston skirt. This makes it easier for the operator to place the disc weights and also enables a low starting value.

  The overall design of the piston-cylinder unit and the precise manufacture of the piston and cylinder ensure extremely low frictional forces, which result in excellent running properties with a high free rotation time and low sink rates. This ensures very high long-term stability. The recommended recalibration cycle is therefore five years depending on the conditions of use.

  LR-Cal LDW-H-EKZ

  Single piston system
  for pressure ranges 120 to 300 bar

  

  LR-Cal LDW-H-DKZ

  Double piston system
  for higher pressure ranges

  

• Piston cylinder systems: pressure ranges + specification

  LR-Cal LDW-H piston cylinder systems: pressure ranges + specification

  Single piston pressure ranges:

  Measuring Range 1)	bar, kg/cm²	1...120	2...300
  Required masses	kg	49.7	49.6
  Smallest step 2) standard set of masses	bar, kg/cm²	0.5	2.5
  Smallest step 3) optional fine increment weights	bar, kg/cm²	0.02	0.05
  Nominal cross-sectional area of the piston	cm²	0.4032	0.1613
  Measuring Range 1)	psi, lb/in²	10...1,600	30...4,000
  Required masses	kg	45.5	45.3
  Smallest step 2) standard set of masses	psi, lb/in²	5	20
  Smallest step 3) optional fine increment weights	psi, lb/in²	0.2	0.5
  Nominal cross-sectional area of the piston	cm²	0.4032	0.1613
  Measuring Range 1)	kPa	100...12,000	200...30,000
  Required masses	kg	49.7	49.6
  Smallest step 2) standard set of masses	kPa	50	250
  Smallest step 3) optional fine increment weights	kPa	2	5
  Nominal cross-sectional area of the piston	cm²	0.4032	0.1613
  Accuracy
  Standard 4) 5)	% of measured value	0.015	0.015
  Optional 4) 5)	% of measured value	0.007	0.006
  Pressure transmission medium
  Standard	Hydraulic fluid based on mineral oil
  Optional	Sebacate oil Brake fluid Skydrol Fomblin oil
  Material
  Piston		Steel	Steel
  Cylinder		Bronze	Steel
  Set of masses	Stainless steel, non-magnetic
  Weights
  Piston-cylinder system	kg	1	0.8
  Storage case for piston-cylinder system	kg	3.1	3.1
  "bar" standard mass sets (in 2 cases)	kg	61.3	61.2
  "psi" standard mass sets (in 2 cases)	kg	57.1	56.9
  Optional "bar" fine increment masses	kg	0.33	0.5
  Optional "psi" fine increment masses	kg	0.23	0.34
  Dimensions
  Carrying case for standard mass sets	mm	W 400 x D 310 x H 310
  Optional storage case for piston-cylinder systems	mm	W 300 x D 265 x H 205

  Double piston pressure ranges:

  Measuring Range 1)	bar, kg/cm²	1...60 / 10...700	1...60 / 20...1.200	1...60 / 20...1.400
  Required masses	kg	57.4	49.2	57.4
  Smallest step 2) standard set of masses	bar, kg/cm²	0.5 / 5.0	0.5 / 10	0.5 / 10
  Smallest step 3) optional fine increment masses	bar, kg/cm²	0.01 / 0.1	0.01 / 0.2	0.01 / 0.2
  Nominal cross-sectional area of the piston	cm²	0.8065 / 0.0807	0.8065 / 0.0403	0.8065 / 0.0403
  Measuring Range 1)	psi, lb/in²	10...800 / 100...10,000	10...800 / 200...16,000	10...800 / 200...20,000
  Required masses	kg	56.4	45	56.4
  Smallest step 2) standard set of masses	psi, lb/in²	5 / 50	5 / 100	5 / 100
  Smallest step 3) optional fine increment masses	psi, lb/in²	0.1 / 1	0.1 / 2	0.1 / 2
  Nominal cross-sectional area of the piston	cm²	0.8065 / 0.0807	0.8065 / 0.0403	9.8065 / 0.0403
  Measuring Range 1)	kPa	100...6,000 / 1,000...70,000	100...6,000 / 2,000...120,000	100...6,000 / 2,000...140,000
  Required masses	kg	57.4	49.2	57.4
  Smallest step 2) standard set of masses	kPa	50 / 500	50 / 1,000	50 / 1,000
  Smallest step 3) optional fine increment masses	kPa	1 / 10	1 / 20	1 / 20
  Nominal cross-sectional area of the piston	cm²	0.8065 / 0.0807	0.8065 / 0.0403	0.8065 / 0.0403
  Accuracy
  Standard 4) 5)	% of measured value	0.015	0.015	0.025
  Optional 4) 5)	% of measured value	0.006	0.007	0.007
  Pressure transmission medium
  Standard	Hydraulic fluid based on mineral oil
  Optional		Sebacate oil Brake fluid Skydrol Fomblin oil	Sebacate oil Brake fluid Skydrol Fomblin oil	Sebacate oil
  Material
  Piston		Tungsten carbide / steel	Tungsten carbide /steel	Tungsten carbide / steel
  Cylinder		Steel / Tungsten carbide	Steel / Tungsten carbide	Steel / tungsten carbide
  Set of masses	Stainless steel, non-magnetic
  Weight
  Piston-cylinder system	kg	2	2	2
  Storage case for piston-cylinder system (optional)	kg	3,1	3,1	3,1
  "bar" standard set of masses (in 2 wooden cases)	kg	69	60,8	69
  "psi" standard set of masses (in 2 wooden cases)	kg	68	56,6	68
  Optional "bar" fine increment masses	kg	0,5	0,5	0,5
  Optional "psi" fine increment masses	kg	0,34	0,34	0,34
  Dimensions
  Carrying case for standard mass sets	mm	B400 x T310 x H310
  Optional storage case for piston-cylinder systems	mm	B300 x T265 x H205

  1) Theoretical starting value; corresponds to the pressure value generated by the piston or the piston and its make-up weights (bei their own weight). To optimise the operating characteristics 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 also available. See Accessories.
  3) The smallest pressure change value that can be achieved based on the optional fine increment weights. For further reductions, an accessory of class M1 or F1 trimm masses is available.
  4) The accuracy from 10% of the measuring range is based on the measured value. In the lower range, the accuracy is 0.03% of reading for single-range piston-cylinder-systems and 0.025% of reading for dual-range piston-cylinder-systems.
  5) Measuring uncertainty assuming reference conditions (ambient temperature 20°C, air pressure 1,013 mbar, relative humidity 40%).Corrections mus be made if required.

• Base unit: specification

  LR-Cal LDW-H base unit: specification

  Base version
  Hydraulic, standard, LR-Cal LDW-H-S		up to a max. 1,200 bar / 16,000 psi; with internal pressure generation
  Hydraulic, high-pressure, LR-Cal LDW-H-H		up to a max. 1,400 bar / 20,000 psi; with internal pressure generation
  Pressure transmission medium
  Standard		Hydraulic fluid based on mineral oil
  Optional		Sebacate oil, Brake fluid, Skydrol or Fomblin oil (dependant upon measuring range)
  Fluid reservoir	cm³	250
  Connections
  Connection for piston-cylinder system		3/4" BSP male; optional: quick-release connector (not for 1,400 bar version)
  Test item connector		1/2" BSP female quick connector as standard, freely rotating, changeable (for other threaded inserts, see accessories)
  Material
  Piping in instrument base		Stainless steel  1.4404, 6 x 2 mm
  Weight
  Base"standard", LR-Cal LDW-H-S	kg	18.0 (19.0 with optional quick-release connector)
  Base "high-pressure", LR-Cal LDW-H-H	kg	18.0
  Optional storage case for basement	kg	8.5
  Permissible ambient conditions
  Operating temperature	°C	18...28
  Dimensions
  Base (both versions)	mm	W 400 x D 375 x H 265

  LR-Cal LDW-H approvals + certificates

  • CE conformity: pressure equipment directive 97/23/EG (module A)
  • Certificate of calibration: Inspection certificate 3.1 according to DIN EN 10204. Optional DAkkS certificate, traceable and accredited according to ISO 17025.

• Scope of standard supply

  LR-Cal LDW-H scope of standard supply

  • Base unit LR-Cal LDW-H
  • Priming pump
  • Spindle pump (pressure generation and fine adjustment)
  • Piston connection with 3/4" BSP male thread
  • Quick-fit connector for unit under test, with thread insert 1/2" BSP female, changeable
  • Piston cylinder system
  • Standard set of masses in carrying case, calibrated to standard gravity 9.80665 m/s²
  • Bottle with 1 liter operating fluid (special mineral oil based hydraulic fluid)
  • Inspection certificate 3.1 according to DIN EN 10204
  • Operating manual DE+EN

• Options + accessories + spare parts

• Product VIDEO

• 

  Accuracy ±0.006/0.007%
  of measured value

  Code:
  ...-G06 / ...-G07

  Option:
  Extended accuracy
  ±0.006% bzw. ±0.007% of measured value
  (depending on pressure range)

• 

  Calibration to special
  local gravity

  Code:
  DW-H-KZS-GRV + LDW-H-MS-GRV

  Option:
  Mass set manufactured to special local gravitational acceleration at the place of use of the device
  (deviating from standard = 9.80665 m/s²)

• 

  Piston cylinder system
  with quick-fit connector

  Code:
  LDW-H-S-CT + LDW-H-KZS-CT

  Option:
  Piston cylinder system with quick release connection instead of M30x2, this allows the piston-cylinder system to be changed without tools.
  
  Only for basic unit up to max. 1,200 bar

• 

  DAkkS-
  certificate

  Code:
  LDW-H-MPZERT-DKD

  Option:
  DAkkS calibration certificate
  traceable and accredited
  according to ISO 17025

• 

  Version for
  sebacate oil

  Code::
  ...-SO

  Option:
  Version for operating medium
  Sebacate oil
  (instead of mineral oil)
  
  for basic unit up to 1,200 bar
  for basic unit up to 1,400 bar

• 

  Version for
  brake fluid

  Code:
  ...-BF

  Option:
  Version for operating medium
  brake fluid
  (instead of mineral oil)
  
  for basic unit up to 1,200 bar

• 

  Version for
  Skydrol

  Code:
  ...-SD

  Option:
  Version for operating medium
  Skydrol
  (instead of mineral oil)
  
  for basic unit up to 1,200 bar

• 

  Version for
  Fomblin oil

  Code:
  ...-FO

  Option:
  Version for operating medium
  Fomblin oil
  (instead of mineral oil)
  
  for basic unit up to 1,200 bar

• 

  Pressure unit
  kg/cm²

  Code:
  LDW-H-MS-KGC

  Option:
  Mass set manufactured on
  pressure unit "kg/cm²"
  (instead of "bar")

• 

  Pressure unit
  kPa

  Code:
  LDW-H-MS-KPA

  Option:
  Mass set manufactured on
  Pressure unit "kPa
  (instead of "bar")

• 

  Pressure unit
  MPa

  Code:
  LDW-H-MS-MPA

  Option:
  Mass set manufactured on
  Pressure unit "MPa
  (instead of "bar")

• 

  Pressure unit
  psi

  Code:
  LDW-H-MS-PSI

  Option:
  Mass set manufactured on
  pressure unit "psi
  (instead of "bar")

• 

  Mass set extension
  finer graduation

  Code:
  LDW-H-FMS-...

  Option:
  Additional finer set of weights to increase the "resolution".
  
  In addition to the standard weight set

• 

  Motorized piston
  drive

  Code:
  LDW-H-E-230

  Option/Accessory:
  Electric drive unit (230 VAC) for the piston-cylinder system
  
  only for ranges
  up to 700 bar and 1,200 bar

• 

  Case for
  base unit

  Code:
  LDW-H-KOFFER-BM

  Accessory:
  Transport and storage case for the basic unit

• 

  Case for
  piston cylinder system

  Code:
  LDW-H-KOFFER-KZS

  Accessory:
  Transport and storage case for the piston cylinder system

• 

  Inremental weight set
  class F1

  Artikel-Nr.:
  LDW-FMS-F1

  Accessory:
  Fine incremental weight set class F1
  1 mg bis 50 g

• 

  Inremental weight set
  class M1

  Code:
  LDW-FMS-M1

  Accessory:
  Fine incremental weight set class M1
  1 mg bis 50 g

• 

  Adapter set
  BSP

  Code:
  LDW-ADAPTER-BSP

  Spare part:
  Set of BSP adapter for test item port

  to 1/2" + 1/4" + 3/8" + 1/2" BSP

  (1 x included in standard supply)

• 

  Adapter set
  NPT

  Code:
  LDW-ADAPTER-NPT

  Accessory:
  Set of NPT adapter for test item port

  to 1/8" + 1/4" + 3/8" + 1/2" NPT

• 

  Angle connector
  90° angle

  Code:
  CPB5000-WA90

  Accessory:
  90° elbow connector
  e.g. for connecting pressure gauges with rear pressure connection to the test connection of the device

• 

  Separator
  max. 700 bar

  Code-Nr.:
  LDW-TV-M-0700

  Accessory:
  Separator max. 700 bar
  with membrane
  To separate the media of the test specimen and the device

• 

  Separator
  max. 1,200 bar

  Code:
  LDW-TV-M-1200

  Accessory:
  Separator max. 1,200 bar
  with membrane
  To separate the media of the test specimen and the device

• 

  Seal set for piston
  and pressure port

  Code:
  CPB5000-R-SET

  Spare part:
  Seal kit for piston mount and test piece connection

LR-Cal LDW-H product VIDEO

LR-Cal CPB5000-HP deadweight tester / pressure balance
hydraulic, up to 5,000 bar
Accuracy up to ±0.02% of measured value

Brochure

• 

  LR-Cal CPB5000-HP Kolbenzylindersystem

  LR-Cal CPB5000-HP
  piston cylinder system

• 

  LR-Cal CPB5000-HP dimensions

  LR-Cal CPB5000-HP
  dimensions

• Description

  LR-Cal CPB5000-HP description

  Proven primary standard
  Deadweight tester are the most accurate devices available on the market for the calibration 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 allow a very small measurement uncertainty in combination with an excellent long-term stability of 5 years (recommendation according to the German Calibration Service (DAkkS). Pressure balances / piston manometers have been used for years in factory and calibration laboratories of industry, national institutes and research institutes.

  Autarkic operation
  Due to the integrated pressure generation (for measuring ranges up to 10 bar) as well as the purely mechanical measuring principle, the LR-Cal CPB5000-HP pressure balance is also ideally suited for on-site use, maintenance and service.

  Basic principle
  Pressure is defined as the quotient of force and area. Accordingly, the heart of the LR-Cal CPB5000-HP pressure balance (deadweight tester) is a very precisely manufactured piston/cylinder system that is loaded with mass supports to generate the individual test points.

  The mass support is proportional to the target pressure and is achieved by optimally graduated disc weights. These disc weights are manufactured as standard to the standard acceleration of gravity of 9.80665 m/s², but can also be optionally adapted to their specific location of use and also DAkkS-calibrated.

  Simple mode of operation
  The pressure is adjusted via an integrated pump. For fine adjustment, a very precisely adjustable spindle pump with an internally running precision spindle is installed. As soon as the measuring system is then in the hovering state, there is a balance of forces between the pressure and the mass supports. Due to the excellent workmanship of the system, this pressure remains stable for several minutes, so that the pressure values for comparative measurement can be read off without any problems, or even longer adjustment work can be carried out on the test specimen.

  Stable instrument design
  With the maximum pressure model, calibrations up to a maximum pressure of 5,000 bar are possible.
  It is built in a stable basement and offers exceptional ease of operation. With the integrated pre-pressure pump and 250 ml tank, even large test volumes can be easily filled and pre-compressed.

  The two test ports are equipped with knurled nuts and interchangeable thread adapters with sealing cones. The following thread adapters with external threads are included in the scope of delivery:

  • M16 x 1.5 with sealing cone
  • M20 x 1.5 with sealing cone
  • 9/16-18 UNF with sealing cone

  Special features:
  

  • Total measurement uncertainty up to ±0.02% of measured value
  • With traceable factory calibration certificate as standard (option: DAkkS calibration certificate)
  • Very high long-term stability, recommended recalibration only every 5 years
  • Mass disks made of stainless steel, adaptation to local gravitational acceleration of the place of use possible without extra charge
  • Compact dimensions

  Applications:

  • Primary standard for the measurand pressure, up to max. 5,000 bar (70,000 psi), hydraulic
  • Reference instrument for factory and calibration laboratories for testing, adjusting and calibrating pressure measuring instruments of all types
  • Self-sufficient complete system, also suitable for on-site use.

• Piston cylinder system + mass set

  LR-Cal CPB5000-HP piston cylinder system

  The piston-cylinder system is screwed into the receptacle in the basement and has special ball bearings that ensure the excellent running characteristics with a high free rotation time and low sink rates and a very high long-term stability, even at high pressures and forces. The recommended recalibration cycle is therefore 5 years.

  The materials of the piston and cylinder have very low coefficients of pressure and temperature expansion, which results in very good linearity of the effective piston cross-sectional area and high accuracy.

  LR-Cal CPB5000-HP mass set

  The standard set of measures (scope depending on the measuring range) is supplied in one to three storage cases. This contains measuring pieces made of non-magnetic stainless steel, which are optimally matched to daily use. For finer graduations or for a higher resolution, the use of a set of fine incremental weight set class M1 or F1 from the accessories is recommended.

  If you do not use the instrument under reference conditions (ambient temperature 20°C, air pressure 1,013 mbar, relative humidity 40%), appropriate correction calculations must be applied.

  The pulley weights are manufactured as standard to the standard acceleration of gravity of 9.80665 m/s², but can also be adapted to your local gravity (for model LR-Cal CPB5000-HP at no extra charge).

  The mass tables (list of number and weight of the pulley weights included in the mass sets can be found in the data sheet, see DOWNLOADs.

• Pressure ranges + specification

  LR-Cal CPB5000-HP pressure ranges + specification

  Measuring range 1)	bar	25...4,000	25...5,000
  Required masses	kg	80	100
  Smallest step (standard mass set) 2)	bar	2,5	2,5
  Nominal cross-sectional area of the piston	cm²	0.02	0.02
  Measuring range 1)	psi	350...60,000	350...70,000
  Required masses	kg	83	97
  Smallest step (standard mass set) 2)	psi	50	50
  Nominal cross-sectional area of the piston	cm²	0.02	0.02
  Accuracy 3) 4)	% of measured value	0.025 / optional 0.02
  Pressure transmission medium	up to 4,000 bar / 60,000 psi: hydraulic fluid based on VG22 mineral oil (1 litre included in scope of delivery) 5,000 bar / 70,000 psi: Sebacate oil (0.5 litre included in scope of delivery)
  Fluid reservoir	cm²	250
  Test item connection	rotatable, including three male adapters M16 x 1.5 / M20 x 1.5 and 9/16-18 UNF
  Material
  Piston	hardened steel
  Cylinder	Tungsten carbide
  Set of masses	Stainless steel 1.4305, non-magnetic
  Piping in instrument base	Stainless steel 1.4404, 6 x 2 mm
  Permissible ambient conditions
  Operating temperature	°C	18...28
  Weights
  High pressure basement	kg	32.5
  Piston-cylinder system	kg	2.7 (5.0 incl. storage case)
  BAR basic set of masses, case 1	kg	34.0	34.0
  BAR basic set of masses, case 2	kg	27.5	27.5
  BAR basic set of masses, case 3	kg	---	---
  BAR basic set of masses, case 4	kg	---	---
  BAR extension set of masses, case 1	kg	33.5	33.5
  BAR extension set of masses, case 2	kg	---	23.5
  PSI basic set of masses, case 1	kg	51.0	51.0
  PSI basic set of masses, case 2	kg	15.0	15.0
  PSI basic set of masses, case 3	kg	---	---
  PSI basic set of masses, case 4	kg	---	---
  PSI extension set of masses, case 1	kg	31.8	31.8
  PSI extension set of masses, case 2	kg	---	17.8
  Dimensions
  Base	mm	W 460 x D 445 x H 265
  Carrying case 1 for basic set of masses	mm	W 400 x D 310 x H 310
  Carrying case 2-4 for basic set of masses	mm	W 215 x D 310 x H 310
  Carrying case for extension set of masses	mm	W 215 x D 310 x H 310
  Storage case for piston-cylinder system	mm	W 370 x D 150 x H 150
  Approvals and certificates
  CE conformity	Pressure equipment directive 97/23/EC (module A)
  Calibration	Inspection certificate 3.1 according to DIN EN 10204 Optional DAkkS certificate, traceable and accredited according to ISO 17025

  1) Theoretical starting value; corresponds to the pressure value generated by the piston (by its own weight). To optimise the operating characteristics, 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 available (see accessories).
  3) The accuracy from 10% of the measuring range is based on the measured value. In the lower range, a fixed error based on 10% of the range applies.
  4) Measurement uncertainty assuming reference conditions (ambient temperature 20°C, air pressure 1,013 mbar, relative humidity 40%). Corrections must be made if required.

• Scope of standard supply

  LR-Cal CPB5000-HP scope of standard supply

  • Base unit LR-Cal CPB5000-HP
  • Priming pump
  • Spindle pump for pressure build-up and fine pressure adjustment
  • Port for piston cylinder unit
  • Port for connecting unit under test, with 3 thread adapter: M16x1.5 + M20x1.5 + 9/16-18-UNF
  • Piston cylinder system, with bell
  • Basic mass set, in 2 transport and storage cases
  • Extension mass set in 1 case (range 4,000 bar) or 2 cases (range 5,000 bar)
  • Mass set calibrated on standard gravity 9.80665 m/s²
  • Special oil 1.0 liter (ranges up to 4,000 bar) or 0.5 liter (range 5,000 bar)
  • Open-end wrench SW 36 and SW 46
  • Inspection certificate 3.1 according to DIN EN 10204
  • Operating manual DE+EN

• Options + accessories

• 

  Accoracy ±0.02%
  of measured value

  Code:
  ...-G2

  Option:
  Increased accuracy
  ±0.020% from the measured value

• 

  Calibration to special
  local gravity

  Code:
  CPB5000-HP-GRV

  Option (without surcharge):
  Mass set manufactured to special local gravitational acceleration at the place of use of the device
  (deviating from standard = 9.80665 m/s²)

• 

  DAkkS certificate
  of calibration

  Code:
  CPB5000-HH-MP-DKD

  Option:
  DAkkS certificate of calibration
  traceable and accredited
  according to ISO 17025

• 

  Inremental weight set
  class F1

  Code:
  LDW-FMS-F1

  Accessory:
  Fine incremental weight set class F1
  1 mg to 50 g

• 

  Incremental weight set
  class M1

  Code:
  LDW-FMS-M1

  Accessory:
  Fine incremental weight set class M1
  1 mg to 50 g

LR-Cal CPB5600-DP deadweight tester / pressure balance
Differential pressure at real static pressure

Brochure

• 

  LR-Cal CPB5600-DP Funktionsschema

  LR-Cal CPB5600-DP
  functional diagram

• 

  LR-Cal CPB5600-DP pneumatisch mit Trennvorlage (Schema)

  LR-Cal CPB5600-DP Scheme
  Pneumatic version with integrated separating device
  (max. 400 bar pneumatic)

• Description

  LR-Cal CPB5600-DP description

  Proven primary standard
  Deadweight tester are the most accurate devices available on the market for the calibration 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 allow a very small measurement uncertainty in combination with an excellent long-term stability of 5 years (recommendation according to the German Calibration Service (DAkkS). Pressure balances / deadweight tester have been used for years in factory and calibration laboratories of industry, national institutes and research institutes.

  Autarkic operation
  Due to the integrated pressure generation as well as the purely mechanical measuring principle, the LR-Cal CPB5600-DP differential pressure deadweight tester is also ideally suited for on-site use, maintenance and service.

  Simple mode of operation
  Depending on the unit design, the pressure is set either via an integrated pump or via an external pressure supply by means of metering valves. For fine adjustment, two very precisely adjustable spindle pumps with internally running precision spindles are installed.

  As soon as the measuring system is in the hovering state, there is a balance of forces between pressure and mass supports. Due to the excellent workmanship of the system, this pressure remains stable for several minutes, so that pressure values for comparative measurement or more extensive adjustment work on the test specimen can be carried out without any problems.

  As standard, the basic units are equipped with two connections for the piston-cylinder systems.

  The test specimen is connected without tools to two quick-connection systems. A threaded insert with a G 1/2 female thread is included as standard. Further threaded inserts are optionally available, with which all common pressure gauges can be connected.

  Special features:

  • Measuring ranges (= static pressure + differential pressure)
    up to 400 bar pneumatic
    up to 1000 bar hydraulic
  • Total measurement uncertainty up to ±0.08% of reading plus 0.0001% (1 ppm) of static pressure
  • With traceable factory calibration certificate as standard (option: DAkkS calibration certificate)
  • Very high long-term stability, recommended recalibration only every 5 years
  • Mass disks made of stainless steel, adaptation to local gravitational acceleration of the place of use possible without extra charge

  Applications:

  • Primary standard for calibration of differential pressure gauges under static pressure
  • Reference instrument for factory and calibration laboratories for testing, adjusting and calibrating pressure measuring instruments of all types
  • Self-sufficient complete system, also suitable for on-site use.

• Piston cylinder system + mass set

  LR-Cal CPB5600-DP piston cylinder system

  The pistons and cylinders are made of tungsten carbide. Tungsten carbide has very low coefficients of pressure and temperature expansion compared to other materials, which results in very good linearity of the effective piston cross-sectional area and high accuracy.

  Piston and cylinder are very well protected against contact, shock or contamination from the outside in a solid stainless steel housing. At the same time, an overpressure safety device is integrated, which prevents the piston from being pushed out vertically and thus prevents damage to the piston-cylinder system in the event of disc weights being removed under pressure.

  The disc weights are stacked on a bell that is placed on the skirt of the piston. The design of the bell ensures a very low center of gravity for the weights placed on top, which minimizes the lateral forces on the piston-cylinder system and friction. For lower starting pressures, a lighter aluminum plate can be used in place of the bell.

  The overall design of the piston-cylinder unit and the precise manufacture of the piston and cylinder ensure extremely low frictional forces, which result in excellent running characteristics with a high free rotation time and low sink rates. This ensures very high long-term stability. The recommended recalibration cycle is therefore five years depending on the conditions of use.

  LR-Cal CPB5600-DP mass set

  The standard set of measures (scope depending on measuring range) is supplied in storage case(s) with foam insert. This contains mass sets made of non-magnetic stainless steel, which are optimally matched to daily use. For differential pressure measurements, the use of class M1 or F1 fine incremental sets from the accessories is also recommended.

  If you do not use the instrument under reference conditions (ambient temperature 20°C, air pressure 1,013 mbar, relative humidity 40%), appropriate correction calculations must be applied.

  The pulley weights are manufactured as standard to the standard acceleration of gravity of 9.80665 m/s², but can also be adapted to their specific place (local gravity) of use.

  The mass tables (list of number and weight of the pulley weights included in the mass sets can be found in the data sheet, see DOWNLOADs.

• Pressure ranges + specification

  LR-Cal CPB5600-DP pressure ranges + specification

  PNEUMATIC Range 1) 2) 6)	bar	0.03...2	0.2...10	0.4...50	0.4...100
  Required masses	kg	10	10	10	20
  Smallest Step 3)	bar	0.01	0.05	0.25	0.25
  Sensitivity 4)	mbar	0.002	0.01	0.05	0.05
  Nominal cross-sectional area of the piston	mm²	5	1	0.2	0.2
  PNEUMATISC Range 1) 2) 6)	psi	0.435...30	2.9...150	5.8...500	5.8...1,000	5.8...1,500
  Required masses	kg	10	10	7	13	20
  Smallest step 3)	psi	0.2	1	5	5	5
  Sensitivity 4)	psi	0.00003	0.00015	0.00075	0.00075	0.00075
  Nominal cross-sectional area of the piston	cm²	5	1	0.2	0.2	0.2
  HYDRAULIC Range 1) 2) 6)	bar	0.2...60	0.2...100	1...250	1...400	2...600	2...1,000
  Required masses	kg	30	50	25	40	30	50
  Smallest step 3)	bar	0.1	0.1	0.5	0.5	1	1
  Sensitivity 4)	mbar	0.04	0.04	0.2	0.2	0.4	0.4
  Nominal cross-sectional area of the piston	cm²	0.5	0.5	0.1	0.1	0.05	0.05
  HYDRAULIC Range 1) 2) 6)	psi	2.9...1,000	14.5...5,000	29...10,000	29...14,500
  Required masses	kg	34	34	34	50
  Smallest step 3)	psi	2	10	20	20
  Sensitivity 4)	psi	0.006	0.003	0.006	0.006
  Effective area	cm²	0.5	0.1	0.05	0.05
  Accuracy 7)	% of measured value	proportion of static pressure: 0.0001 proportion of differential pressure: 0.015 / optional: 0.008 (high-pressure hydraulic version: 0.025 / optional: 0.020)
  Lower limiting value of measurement uncertainty		depends on range; corresponds to sensitivity of piston
  Basement versions
  Pneumatic		up to 100 bar / 1,500 psi; with priming pump, spindle pump and port for external pressure supply
  Pneumatic with separator		up to 400 bar / 5,000 psi; for external pressure supply, with integrared separator air on oil
  Hydraulic		up to 1,000 bar / 14,500 psi; with internal pressure supply (on request version up to 1,600 bar / 23,200 psi available)
  Pressure ports
  Piston-cylinder-unit		Quick-fit connection for basement versions pneumatic and hydraulic; M30 x 2 male thread for basement version pneumatic with separator
  Test item		2 pcs. quick-fit connections 1/2" BSP female rotating, other threads see accessories
  Pressure medium
  Pneumatic		clean and dry non-corrosive gases (e.g. air or nitrogen)
  Hydraulic		special oil (1 l included in supply)
  Oil reservoir	cm²	250
  External pressure supply		6 mm SWAGELOK (R) tube fitting; max. 110% of used pressure range (only for basement version pneumatic or version pneumatic with separator)
  Materials
  Piston		Tungsten Carbid
  Cylinder		Tungsten Carbid
  Set of masses		Stainless steel 1.4305 and aluminium, non-magnetic
  Tubes / pipes in basement
  Pneumatic		Stainless steel 1.4571, 3 x 1 mm
  Hydraulic		Stainless steel 1.4404, 6 x 2 mm
  Operating conditions
  Operating temperature	°C	18...28
  Weight
  Basement pneumatic	kg	34.0
  Basement pneumatic with separator	kg	32.0
  Basement hydraulic	kg	38.5
  Piston-cylinder-unit	kg	1.5 (5.7 incl. bell jar and base weight, in optional carrying case (2 units required)
  BAR weight set, pneumatic	kg	32.4 (incl. 2 wooden cases)
  BAR extension weight set, pneumatic	kg	28.0 (incl. 2 wooden cases)
  BAR weight set, hydraulic	kg	72.0 (incl. 2 wooden cases)
  BAR extension weight set, hydraulic	kg	48.0 (incl. 2 wooden cases)
  PSI weight set, pneumatic	kg	25.0 (incl. 2 wooden cases)
  PSI extension weight set 1, pneumatic	kg	22.0 (incl. 2 wooden cases)
  PSI extension weight set 2, pneumatic	kg	37,0 (incl. 2 wooden cases) only for range 1,500 psi
  PSI weight set, hydraulic	kg	84,0 (incl. 2 wooden cases)
  PSI extension weight set, hydraulic	kg	43,0 (incl. 2 wooden cases)
  Dimensions
  Basement	mm	W 800 x D 375 x H 265
  Wooden case for weight set	mm	W 400 x D 310 x H 310
  Wooden case for extension weight set	mm	W 215 x D 310 x H 310
  Optional case for piston-cylinder-unit	mm	W 300 x D 265 x H 205
  Certificates
  CE-Conformity		97/23 EG (module A), only for versions above 1,000 bar
  Calibration		Inspection certificate 3.1 according to DIN EN 10204 Optional DAkkS certificate, traceable and accredited according to ISO 17025

  1) Measuring range = static pressure + differential pressure.
  2) Theoretical starting value; corresponds to the pressure value generated by the piston (by its own weight). To optimise the operating characteristics, more weights should be loaded.
  3) The smallest pressure change value that can be achieved based on the standard weight set. To reduce this, a set of trim-masses is available (see accessories).
  4) The sensitivity is the threshold of the measuring system. It is the pressure value of the smallest mass-addition, which brings the piston-cylinder system clearly and reproducibly out of balance.
  5) Measurement uncertainty assuming reference conditions (ambient temperature 20°C, air pressure 1,013 mbar, relative humidity 40%). Corrections must be calculated, if required.
  6) Other on request.
  7) The accuracy of the differential pressure is determined in accordance with the calculation basis shown in the datasheet (see DOWNLOADs).

• Scope of standard supply

  LR-Cal CPB5600-DP scope of standard supply

  • Base unit LR-Cal CPB5600-DP with height adjustable feet
  • Priming pump
  • Connections for external pressure supply (only for pneumatic version)
  • 2 spindle pumps for pressure generation and fine adjustment
  • 2 connectors for piston cylinder systems
  • 2 quick-fit connectors for item under test, with thread insert 1/2" BSP female, changeable
  • 2 piston cylinder systems
  • 2 sets of masses in carrying cases, calibrated to standard local gravity 9.80665 m/s²
  • Special oil 1.0 liter (only for hydraulic version)
  • Inspection certificate 3.1 according to DIN EN 10204
  • Operating manual DE+EN

• Options + accessories

• 

  Accuracy ±0.008%
  of measured value

  Code:
  ...-G1

  Option:
  Increased accuracy
  ±0.008% from measured value

• 

  Calibration to special
  local gravity

  Code:
  CPB5600-DP-GRV

  Option (without surcharge):
  Mass sets manufactured to special local gravitational acceleration at the place of use of the device
  (deviating from standard = 9.80665 m/s²)

• 

  DAkkS
  calibration certificate

  Code:
  CPB5600-DP-UKAS

  Option:
  DAkkS calibration certificate
  traceable and accredited
  according to ISO 17025

• 

  Incremental weight set
  class F1

  Code:
  LDW-FMS-F1

  Accessory:
  Fine incremental weight set class F1
  1 mg to 50 g

  A fine incremental weight set is strongly recommended for differential pressure deadweight tester.

• 

  Incremental weight set
  class M1

  Code:
  LDW-FMS-M1

  Accessory:
  Fine incremental weight set class M1
  1 mg to 50 g

  A fine incremental weight set is strongly recommended for differential pressure deadweight tester.

• 

  Case for
  piston cylinder systems

  Code:
  CPB5600-DP-KOFFER

  Accessory:
  Case for piston cylinder systems

Brochure

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• 

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  Measure and give current and voltage

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