Fluke Calibration 6531 E-DWT Electronic Deadweight Tester Kit

  • Pressure ranges available to 200 MPa (30,000 psi)
  • ± 0.02 % of reading total one-year accuracy, 0.025 % for two years
  • Low torque variable volume allows for pressure generation and control up to 200 MPa (30,000 psi) with minimal physical effort
  • Built-in priming system to fill system with test fluid and purge unwanted air to assure smooth operation
  • Unique test port design eliminates the need for PTFE tape or wrenches. Adapters included for 1/8 in, 1/4 in, 3/8 in and 1/2 in NPT, 1/8 in, 1/4 in, 3/8 in and 1/2 in BSP, M20 x 1.5 and M14 x 1.5
  • Compatible with a wide range of liquids, including water. Vacuum fill kit included to fill the E-DWT with any compatible test medium
  • AutoTest, AutoRange, ready/not ready indicator, onboard data capture and storage, overpressure alarm, RS-232 remote interface and other advanced features to simplify testing, improve safety and prevent calibration errors and damage to equipment
  • Optional foot switch accessory allows hands-free data collection when running AutoTests
  • Rechargeable battery pack and transport case options for field operation
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Product Information
Datasheet 2.23 MB PDF
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The Fluke Calibration 6351 E-DWT-H is used in the lab or instrument shop or can be taken into the field for performing in-situ calibrations and tests. This hydraulic pressure calibration system combines a high performance electronic reference pressure monitor and manually operated pressure generation and control hardware in a single, compact and rugged package. The Fluke Calibration 6351 E-DWT-H offers the ease of use and precision of continuous, real time electronic pressure measurement with the simple and direct pressure control of high quality manual pressure hardware. The Fluke Calibration 6351 E-DWT is named "electronic deadweight tester" because it is intended as a lightweight and easy to use, modern alternative to conventional piston-cylinder and weight based deadweight testers.

The Fluke Calibration 6351’s electronic reference pressure monitor is a special version of RPM4, designated RPM4-E-DWT. RPM4-E-DWT can be configured with one or two high precision quartz reference pressure transducers (Q-RPTs) with ranges from 7 MPa (1 000 psi) to 200 MPa (30 000 psi). The RPM4-E-DWT is controlled locally by the operator using its front panel display, keypad and optional foot pedal or remotely by a computer using ASCII character command strings over its RS-232 interface.

The Fluke Calibration 6351 RPM4-E-DWT uses an AutoRange feature to automatically select the most appropriate Q-RPT and to optimize the Fluke Calibration 6351E-DWT-H setup to cover the desired range of operation. When two Q-RPTs are included, a half-turn valve isolates and protects the Lo Q-RPT from high pressure when the Hi Q-RPT is in use. Visual and audible indicators assist the operator in setting the shut off valve correctly. The Fluke Calibration 6351 E-DWT-H includes the hardware necessary to fill and prime the system under test and generate and precisely adjust pressure up to 200 MPa (30 000 psi). The E-DWT-H can be powered with an optional battery/charger pack for use in locations where AC power is not readily available.

Fluke Calibration electronic deadweight tester kits feature E-DWT-H configurations combined with the accessories needed for a complete calibration system. Model 6531 options feature E-DWT-H configurations with a single quartz reference pressure transducer (Q-RPT) to offer percent of reading performance from 10% to 100% of device full scale. The Fluke Calibration 6531 kits provide all you need to perform high level hydraulic pressure calibration right out of the box.

PPC4E measurement uncertainty
Model E-DWT-H Configuration 0.02% accuracy of any span from/to
6531-7M E-DWT-H A7M 0.7 to 7 MPa 100 to 1,000 psi
6531-14M E-DWT-H A14M 1.4 to 14 MPa 200 to 2,000 psi
6531-20M E-DWT-H A20M 2 to 20 MPa 300 to 3,000 psi
6531-40M E-DWT-H A40M 4 to 40 MPa 600 to 6,000 psi
6531-70M E-DWT-H A70M 7 to 70 MPa 1,000 to 10,000 psi
6531-140M E-DWT-H A140M 14 to 140 MPa 2,000 to 20,000 psi
6531-200M E-DWT-H A200M 20 to 200 MPa 3,000 to 30,000 psi
General specifications
Power requirements To RPM4-E-DWT: 12 V dc 1.2 A
To ac to dc power supply: 100 V ac to 240 V ac, 50/60 Hz
Operating temperature range 10°C to 40°C (50°F to 104°F)
Storage temperature range -20°C to 70°C (-4°F to 158°F) (must be above freezing point and below boiling point of test medium)
Relative operating humidity 0% to 70%
Relative storage humidity 0% to 100%
Weight E-DWT with 1 Q-RPT: 12 kg (26 lb) approximate
E-DWT with 2 Q-RPTs: 14 kg (30 lb) approximate
Dimensions E-DWT footprint: 41.4 cm W x 37.1 cm D (16.3 in x 14.6 in)
E-DWT height: 26.9 cm (10.6 in), 33.6 cm (13.2 in) to max variable volume handle height
Pressure range Up to 200 MPa (30k psi), depending on configuration
Operating medium All 6531 and 6532 E-DWT Kits are shipped dry, standard preparation. Can be filled with di-ethyl-hexyl sebacate, silicon oils, propylene glycol, fully fluorinated liquids, partially fluorinated liquids, isopropyl alcohol and distilled water or mineral oil.
Reservoir capacity 300 cc (18 in3)
Variable volume displacement 3 cc (0.18 in3), 200 MPa (30 000 psi) maximum
Filling and priming pump displacement 3.7 cc (0.23 in3)
TEST pressure connection DH500 female, 200 MPa (30k psi) maximum working pressure. Adapters included for 1/8 in, 1/4 in, 3/8 in and 1/2 in NPT, 1/8 in, 1/4 in, 3/8 in and 1/2 in BSP, M20 x 1.5 and M14 x 1.5. Adapter maximum working pressure is 140 MPa (20k psi). Note: DH500 is a gland and collar type fitting for 6 mm (1/4 in) coned and left hand threaded tubes equivalent to AE F250C, HIP HF4, 9/16-18 UNF, etc.
Pressure limits Maximum working pressure: Range of RPM4-E-DWT monitor’s Hi Q-RPT
Maximum priming pump pressure: 700 kPa (100 psi)
Maximum working pressure with Lo Q-RPT selected: Range of RPM4-E-DWT monitor’s Lo Q-RPT
Communication ports RS-232 (COM1, COM2)
General specifications
Warm up time 15 minute temperature stabilization recommended from cold power up
Normal operating temperature range 10°C to 40°C (50°F to 104°F)
Resolution Default: 0.01 % of active range
User adjustable to 1 ppm of Q-RPT maximum or 10 ppm of active AutoRange, whichever is larger
Precision ±0.018 % of reading or 0.0018 % of Q-RPT span, whichever is greater
Predicted Stability One year: ± 0.0075 % of reading
Two year: ± 0.015 % of reading
Measurement uncertainty One year: ± 0.02 % of reading or 0.002 % of Q-RPT span, whichever is greater
Two year: ± 0.025 % of reading or 0.0025 % of Q-RPT span, whichever is greater
Ordering Information
Model Description Buy Online Price
MFR ID: 4183614 
Fluke Calibration 6531-7M Electronic Deadweight Tester, 7 Mpa (1K Psi) Buy Now $24,800.00
MFR ID: 4183623 
Fluke Calibration 6531-14M Electronic Deadweight Tester, 14 Mpa (2K Psi) Buy Now $24,800.00
MFR ID: 4183638 
Fluke Calibration 6531-20M Electronic Deadweight Tester, 20 Mpa (3K Psi) Buy Now $24,800.00
MFR ID: 4183645 
Fluke Calibration 6531-40M Electronic Deadweight Tester, 40 Mpa (6K Psi) Buy Now $24,800.00
MFR ID: 4183650 
Fluke Calibration 6531-70M Electronic Deadweight Tester, 70 Mpa (10K Psi) Buy Now $24,800.00
Included Accessories
  • 1 - E-DWT-H electronic deadweight tester
  • 1 - Power supply
  • 1 - Vacuum liquid fill kit
  • 1 - Test station quick-mount fitting
  • 1 - 1/8 inch NPT adapter
  • 1 - 1/4 inch NPT adapter
  • 1 - 3/8 inch NPT adapter
  • 1 - 1/2 inch NPT adapter
  • 1 - 1/8 inch BSP adapter
  • 1 - 1/4 inch BSP adapter
  • 1 - 3/8 inch BSP adapter
  • 1 - 1/2 inch BSP adapter
  • 1 - M20 x 1.5 Metric adapter
  • 1 - M14 x 1.5 Metric adapter
  • 1 - Operating manual