6531, 6532 E-DWT Electronic Deadweight Tester
Kits
靖江中诺仪器有限公司为福禄克中国总代理,欢迎来电洽谈!
A powerful, complete hydraulic pressure
calibration system to cover a wide workload
Fluke Calibration improved the hydraulic
pressure calibration process with the introduction of E-DWT-H electronic deadweight
tester. E-DWT-H is an electronic calibrator designed to deliver traditional
hydraulic deadweight tester performance with digital measurement features and
convenience. Some improvements offered by E-DWT-H include:
·No weights to load and unload, transport or send out for calibration
·Provides real-time pressure indication with no need to know and
correct for local gravity or ambient temperature
·No piston-cylinder changes
·No significant sensitivity to level or vibration
·Able to set and read any pressure value exactly, no minimum
increment limited by smallest available masses; perfect for applications that
require setting a nominal pressure precisely on the device under test and
measuring it, such as analog gauge calibration
·Operates in any unit of measure, switching easily from one unit to
the next
The
E-DWT-H is at home in metrology and calibration labs, on the production floor
or in the field. It can operate with a wide selection of test mediums,
including Sebacate calibration fluid, mineral oil, water and other liquids. ± 0.02 % of
reading total one-year measurement uncertainty rivals the best laboratory
deadweight testers.
The 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. 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. 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 E-DWT’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.
RPM4-E-DWT uses an AutoRange feature to
automatically select the most appropriate Q-RPT and to optimize the E-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 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.
High performance calibration made simple
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.
Model 6532 options feature an additional Q-RPT to maximize workload coverage,
with percent of reading performance from 1 % to 100 % of device full scale. An
included vacuum fill kit allows the E-DWT to be filled with your choice of
compatible fluid, while eliminating problematic air pockets from the test
circuit. Also included is a test station adapter to mount just about any
pressure device to be tested without using PTFE tape or wrenches. 6531 and 6532
kits provide all you need to perform high level hydraulic pressure calibration
right out of the box.
·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
靖江中诺仪器有限公司为福禄克中国总代理,欢迎来电洽谈!
General
|
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
|
Temperature
range
|
Storage:
|
- 20 °C
to 70 °C
|
Operating:
|
10 °C to
40 °C
|
Relative
Humidity
|
Storage:
|
0 % to
100 %
|
Operating:
|
0 % to
70 %
|
Weight
|
1 Q-RPT:
|
12 kg
(26 lb) approximate
|
2 Q-RPT:
|
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)
|
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
|
Precision1
|
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
Stability2
|
|
One
year:
|
± 0.0075
% of reading
|
Two
year:
|
± 0.015
% of reading
|
Measurement
Uncertainty3
|
|
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.
靖江中诺仪器有限公司为福禄克中国总代理,欢迎来电洽谈!