DH Instruments E-DWT-10000-AF, Руководство по эксплуатации и обслуживанию

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1. INTRODUCTION
Page 3 © 2008 DH Instruments, a Fluke Company
1.2.2 BATTERY AND CHARGER PACK
Power Requirements 100 to 240 VAC, 50/60 Hz, 15 W max consumption
Operating Temperature Range 0 to 50 °C
Storage Temperature Range - 20 to 70 °C
Weight 2 kg (4.4 lb)
Dimensions 8 cm H x 22.5 cm W x 20 cm D (3.1 in. x 8.9 in. x 7.9 in.)
Battery Type Nickel metal-hydride
Battery Voltage 12 VDC
Battery Capacity Typical: 9000 mAh
Min:
8200 mAh
Charge Time Full charge from empty, 14 to 16 hours approx.
Approx. Run Time, Full Charge 8 to 12 hours
1.2.3 PRESSURE MEASUREMENT SPECIFICATIONS
1.2.3.1 REFERENCE PRESSURE TRANSDUCERS (RPT)
E-DWT-10000-AF is configured with two quartz reference pressure transducer
(Q-RPT) modules to measure pressure.
The Q-RPTs are intrinsically absolute, operating against a sealed vacuum
reference. Gauge pressure is defined by offsetting atmospheric pressure and
applying dynamic compensation for atmospheric changes using the on-board
barometer (see Section 3.9.1).
Warm Up Time 15 minute temperature stabilization recommended from
cold power up.
Compensated Temperature Range 5 to 35 °C
Operating Temperature Range 18 to 28 °C
A7M Q-RPT A70M Q-RPT
Maximum Range 1 000 psi (7 MPa) 10 000 psi (70 MPa)
Resolution 0.01 % of active range default.
User adjustable to 1 ppm of Q-RPT maximum or 10 ppm
of active AutoRange, whichever is larger.
Precision
1
± 0.015 % of reading, or
0.045 psi, whichever
is larger ± 0.015% of reading, or
0.45 psi, whichever
is larger
Temperature effect
2
± 0.0006% of span per ºC deviation from calibration
temperature (23ºC)
Predicted Stability
3
± 0.01% of reading or 0.02
psi, whichever is greater
± 0.01% of reading or 0.1
psi, whichever is greater
Measurement Uncertainty
4
± 0.1% of reading, or
0.1 psi, whichever is
greater ± 0.1% of reading, or
1.0 psi, whichever is
greater
1. Combined linearity, hysteresis, and repeatability.
2. Maximum influence of ambient temperature on indicated pressure from 0 to 50ºC
3. Predicted Q-RPT measurement stability limit (k=2) over two years assuming regular use of
AutoZero function and short term stability between rezeroing. As stability can only be predicted
and varies from Q-RPT to Q-RPT, stability for a specific Q-RPT should be established from
experience.