Item Brochure

3 Fluke Calibration 6531 and 6532 E-DWT Electronic Deadweight Tester Kits
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 in
3
)
Variable volume displacement 3 cc (0.18 in
3
), 200 MPa (30 000 psi) maximum
Filling and priming pump
displacement
3.7 cc (0.23 in
3
)
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)
Pressure measurement
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
1
200 MPa (30,000 psi) ranges: ± 0.018 % of reading or 0.0036 % of Q-RPT span,
whichever is greater
All other ranges: ± 0.018 % of reading or 0.0018 % of Q-RPT span, whichever is greater
Predicted Stability
2
One year: ± 0.0075 % of reading
Two year: ± 0.015 % of reading
Measurement uncertainty
3
One year: 200 MPa (30,000 psi) ranges: ± 0.02 % of reading or 0.004 % of Q-RPT span,
whichever is greater
All other ranges: ± 0.02 % of reading or 0.002 % of Q-RPT span, whichever is greater
Two year: 200 MPa (30,000 psi) ranges: ± 0.025 % of reading or 0.005 % of Q-RPT span,
whichever is greater
All other ranges: ± 0.025 % of reading or 0.0025 % of Q-RPT span, whichever is greater
1. Combined linearity, hysteresis, and repeatability. Precision does not include stability or calibration reference uncertainty.
2. Predicted Q-RPT measurement stability limit (k=2) assuming regular use of AutoZero function and short term stability between rezeroing.
3. Maximum deviation of the Q-RPT indication from the true value of applied pressure including precision, predicted stability with rezeroing, temperature effect from 10 ºC
to 40 ºC and calibration uncertainty (assumes calibration reference uncertainty of ± 0.005 % of reading, k=2), combined and expanded (k=2) following the ISO “Guide to
the Expression of Uncertainty in Measurement”.