™
E-DWT-H
Electronic Deadweight Tester
Hydraulic deadweight tester performance
with digital measurement convenience
E-DWT-H Electronic Deadweight Tester™— leave the deadweight behind
A modern alternative to the traditional deadweight tester
E-DWT-H breaks new ground,
improving the hydraulic pressure
calibration process. E-DWT-H is
an electronic calibrator designed
to replace mechanical, pistoncylinder and weight based
deadweight testers. It’s a lighter
weight, easier-to-use deadweight
tester alternative that is at home in
the lab or instrument shop, as well
as in the field performing in-situ
calibrations and tests.
This complete hydraulic pressure calibration system combines
the convenience and precision of
continuous, real time electronic
pressure measurement with the
simple and direct operation of
high quality operator controlled
pressure generation hardware.
E-DWT-H one year measurement
uncertainty is ± 0.02 %
of reading with ranges up to
30,000 psi. It can be configured to
provide this uncertainty from its
full scale down to 1% of its range.
Built-in pressure generation and
control hardware allow the operator to fill and prime the system
under test and generate and precisely adjust pressure throughout
the range with ease.
Deadweight tester performance with digital measurement convenience
E-DWT-H offers precision, low
measurement uncertainty and the
stability over time of a conventional deadweight tester without
the inconveniences associated
with the piston-cylinders, weights,
hand pumps, and interconnecting
plumbing.
• No weights to load and unload
or regularly send out for
calibration
• No need to know and correct
for local gravity or ambient
temperature
• No piston-cylinder changes;
switch Q-RPT ranges in seconds
• Not sensitive to level or
vibration
• Able to set and read any pressure value exactly, no minimum
increment limited by smallest
available masses
• Operates in any unit of measure
while deadweight tester is typically limited to the pressure unit
stamped on the mass
• Perfect for applications that
require setting a nominal
pressure precisely on the
device under test and measuring it, such as analog gauge
calibration
• On-board, AutoTest calibration
routines and data acquisition
• Interfaceable with a PC or
laptop to allow for automated
data acquisition
• Two year calibration interval
supported at measurement
uncertainty of ± 0.025 % of
reading.
• Easily recalibrated without
crossfloating. Automated calibration of E-DWT-H is possible
using COMPASS
software.
®
for Pressure
Versatility to cover a broad
workload in a variety of
environments
The E-DWT-H is at home in
metrology and calibration labs, on
the production floor or in the field.
It operates with Sebacate calibration fluid, mineral oil, Skydrol
and other liquids.
An optional battery/charger
pack supports up to eight hours of
operation away from line power.
®
AutoTest™ lets E-DWT-H
operators quickly define test
points and adjust all of the
range-dependent settings
with a single function.
The resolution and stability test
used by the RPM4-E-DWT are
set according to the range of the
device under test. The upper limit
setting is also set and provides
range-based warnings and
overpressure protection. While
running AutoTests, the operator is
prompted to set each sequential
test point and test data is stored
2 Fluke Calibration E-DWT-H™ Electronic Deadweight Tester
in the RPM4-E-DWT for recall or
download. Typical test setup is
quick and easy, but more complex tests can also be stored and
reused.
Broad workload coverage
The E-DWT-H has the operational
versatility to calibrate and test a
broad range of pressure measuring instruments including:
• Analog gauges
• Transducers
• Calibrators
• Sensors
• Transmitters
E-DWT-H in lab environment
All the features you expect in today’s
Measurement Uncertainty (% of Q-RPT Max Span)
state-of-the-art instruments, including:
Accuracy and performance
• Can be configured to provide
uncertainty of ± 0.02 % of reading from 1 % to 100 % of full
scale range
• Low torque variable volume
allows for pressure generation
up to 200 MPa (30,000 psi) with
minimal physical effort
• Separate fine adjustment
tool for maximum, superfine
controlresolution
• User defined resolution and
ready limits enable user to
optimize performance based
on DUT specifications
• High pressure isolation valve
and pressure relief valve protect
the low pressure reference
transducer from over pressure
when high pressure reference
transducer is active
Ease of use
• AutoRange feature optimizes
measurement and safety
features for the specific range of
the instrument being calibrated
• Simple rezeroing while vented
at atmospheric pressure
• Simple, objective pressure
“ready/not ready” indicator
with user adjustable criteria
to ensure repeatable results
among operators
• Not dependent on local gravity
or ambient temperature
• Sets and reads any pressure
value directly in any unit of
measure, without moving
weights
• Built-in priming system to fill
system with test fluid and purge
unwanted air to assure smooth
operation
• Optional foot switch accessory
allows hands-free data collection when running AutoTests
Portability
• Rechargeable battery pack
option for eight hours of field
operation
• Everything to set, adjust and
read pressure in one compact,
transportable package
• Optional shipping/carrying
case with handles and wheels
allows for easy transport to field
application
• Proven rugged and weatherproof design with room for
accessories.
Automation
• RS-232 interface allows for
real time automated data
collection and customized
report generation using Fluke
Calibration’s COMPASS for
Pressure Calibration software
Free upgrades
• Flash memory for simple and
free embedded software
upgrades from
www.flukecal.com
Q-RPT 2 Years : ±(0.025% of reading,
or 0.0025% of Q-RPT span, whichever is greater)
Q-RPT 1 Year: ±(0.02% of reading, or 0.002% of
Q-RPT span, whichever is greater)
0.02% FS Device
Measured Pressure (% of Q-RPT Span)
Reference pressure monitor and
Q-RPT quartz reference pressure
transducers
The E-DWT-H’s electronic reference pressure
monitor is a dedicated version of the Fluke
Calibration 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 (1000 psi) to 200 MPa (30,000 psi).
E-DWT-H’s outstanding pressure measurement specifications are made possible by
Fluke Calibration’s exclusive quartz reference
pressure transducer (Q-RPT) modules.
Q-RPTs measure pressure by measuring the change in the natural oscillating
frequency of a quartz crystal with pressure
induced stress. To be qualified for use in
a Q-RPT module, each transducer is individually evaluated and characterized using
automated primary pressure standards. Only
transducers exhibiting superior levels of linearity, repeatability and stability are selected.
A proprietary compensation model, derived
from 20+ years experience with thousands
of quartz pressure transducers, is applied to
optimize the metrological characteristics.
Q-RPT module advantages
In addition to outstanding metrological
characteristics, Q-RPT modules offer the
advantages of:
• Negligible warm-up time
• Quartz element isolated from test medium
• Minimal sensitivity to orientation
Q-RPT
measurement
uncertainty
% of reading
uncertainty gives
tremendous
rangeability.
30 40 60 70 80 90 1002010 50
E-DWT-H™ Electronic Deadweight Tester Fluke Calibration 3
E-DWT-H combines reliable, digital
reference pressure measurement with
high quality, easy-to-use pressure
generation and control hardware.
Provides low torque, pressure
generation and adjustment
Warning light and audible alarm
when Lo Q-RPT isolation valve is
not in correct position
E-DWT-H—high pressure hydraulic calibration made simple
Isolates reservoir when
generating pressure
Indicator lights with audible alert
to instruct user of correct position
of Lo Q-RPT isolation valve
RPM4 reference pressure monitor front panel display
A clean, simple front panel with a large display screen makes the
E-DWT-H easy to learn and straightforward to use
1
6
4 Fluke Calibration E-DWT-H™ Electronic Deadweight Tester
4 Fluke Calibration E-DWT-H™ Electronic Deadweight Tester
2 3 4 5
1. Pressure “Ready” (green) “Not Ready”
(red) based on real time measurement of
pressure stability
2. Value of measured pressure
3. Pressure unit of measure
4. Measurement mode
5. Active Q-RPT module (Hi or Lo)
6. The Function/Data keys allow commonly
used functions, such as unit of measure
change, to be accessed directly by a single
7
keystroke when pressed
7. Launch pre-recorded or quick set up
automated calibration sequences
Test port for single device under test or connection
to test system/manifold (2nd test port on rear)
Fill, purge and prime the test system
Calibration uid reservoir
RPM4-E-DWT reference pressure
monitor with user interface
In E-DWT-Hs with dual Q-RPTs, half turn, spring
loaded valve isolates the low pressure Q-RPT
when the high pressure Q-RPT is in use
Shuts off test ports to rell variable
volume if needed and provides superne pressure adjustment
E-DWT-H with single Q-RPT
E-DWT-H™ Electronic Deadweight Tester Fluke Calibration 5
E-DWT-H™ Electronic Deadweight Tester Fluke Calibration 5
Automation and support—integration made easy
E-DWT-H in the field
E-DWT-H has been designed for ease of
use in the field performing in-situ calibrations and tests. The optional rugged,
wheeled case allows quick setup and
makes transport easy and worry free.
With the battery pack option, eight hours
of field application is possible. No need
to drain fluid or disassemble hardware
for transport. Simply remove from case
connect to test item.
Automate data collection and manage calibration assets with
COMPASS for Pressure software
E-DWT-H can run stand-alone tests and collect test data. Test data can
be downloaded over the RPM4-E-DWT’s RS-232 interface.
The RPM4-E-DWT’s RS-232 interface can also be used to run the
E-DWT-H with COMPASS for Pressure software or user developed
software.
COMPASS for Pressure software is universal pressure calibration
software for the laboratory, which can be used to run simple or complex
tests with multiple instruments. The user can create his/her own calibration report, and data can be exported to Fluke MET/CAL Calibration
Management Software.
6 Fluke Calibration E-DWT-H™ Electronic Deadweight Tester
If you need support, we’re here to help
Fluke Calibration’s testing, repair and calibration services are dedicated to filling your needs quickly and at a fair cost while maintaining
the unmatched level of quality that is our trademark. Our pressure
calibration laboratories are accredited by the American Association for
Laboratory Accreditation (A2LA) for conformance to ISO Guide 17025.
We maintain global calibration and repair facilities to help you keep
your hardware in top working order.
Specications
General
Power requirements To RPM4-E-DWT: 12 V dc 1.2 A
Operating temperature 10 °C to 40 °C (50 °F to 104 °F)
Storage temperature -20 °C to 70 °C (-4 °F to 158 °F)
Relative operating humidity 0 % to 70 %
Relative storage humidity 0 % to 100 %
Weight 1 Q-RPT: 12 kg (26 lb) approximate
Dimensions E-DWT-H footprint (W x D): 41.4 cm x 37.1 cm (16.3 in x 14.6 in)
Pressure ranges (Dependent on Q-RPT(s)
included in RPM4-E-DWT.)
Operating medium Delivered filled with oil (di-ethyl-hexyl sebacate) or dry. Standard E-DWT-H compatible with Sebacate, silicon oils,
Reservoir capacity 300 cc (18 in
Variable volume displacement Standard: 3 cc (0.18 in
Filling and priming pump displacement 3.7 cc (0.23 in
TEST pressure connection DH500 female. Note: DH500 is a gland and collar type fitting for 6 mm (1/4 in) coned and left hand threaded tubes
Pressure limits Maximum working pressure: Range of RPM4-E-DWT monitor’s Hi Q-RPT
Communication ports RS-232 (COM1, COM2)
To ac to dc power supply: 100 V ac to 240 V ac, 50/60 Hz
2 Q-RPT: 14 kg (30 lb) approximate
E-DWT-H height: 26.9 cm (10.6 in), 33.6 cm (13.2 in) to max variable volume handle height)
200 MPa (30,000 psi) maximum with standard variable volume
100 MPa (15,000 psi) maximum with high volume (-HV) variable volume
propylene glycol, fully fluorinated liquids, partially fluorinated liquids, isopropyl alcohol, and distilled water. Option for
Skydrol or mineral oil preparation.
3
)
3
), 200 MPa (30,000 psi) maximum
3
High: 7 cc (0.43 in
), 100 MPa (15,000 psi) maximum
3
)
equivalent to AE F250C, HIP HF4, 9/16-18 UNF, etc..
200 MPa (30,000 psi) with standard variable volume
100 MPa (15,000 psi) with high volume variable volume
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
Pressure measurement
Warm up time 15 minute temperature stabilization recommended from cold power up
Normal operating
10 °C to 40 °C (50 °F to 104 °F)
temperature range
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
Predicted stability
1
2
Measurement uncertainty
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
One year: ± 0.0075 % of reading
Two year: ± 0.015 % of reading
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 (50 °F to 104 °F)
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.”
E-DWT-H™ Electronic Deadweight Tester Fluke Calibration 7
Ordering information
Configuring an E-DWT-H Electronic Deadweight Tester
1. Determine the maximum pressure desired and select the Hi Q-RPT from the
E-DWT-H Q-RPTs chart.
2. If uncertainty better than ± 0.02 % reading is needed below 10 % of the span of
the Hi Q-RPT, add a Lo Q-RPT from the E-DWT-H Q-RPTs chart. Lo Q-RPT cannot
be higher than A40M.
3. If desired, specify the high volume variable volume rather than the standard
volume variable volume (limits maximum pressure to 100 MPa).
4. Standard preparation for unit is filled with Sebacate oil calibration fluid. See
specifications for compatibility with other liquids. If other preparation is needed,
must specify either “Shipped Dry, Std Prep,” “Shipped Dry, Skydrol Ready,” or
“Shipped Dry, Mineral Oil Ready.” The fill kit accessory is recommended for units
that are shipped dry and for refilling in the field.
The configured E-DWT-H instrument designation is: E-DWT-H-HV AhhhM/AlllM
Where:
E-DWT-H: Hydraulically operated electronic deadweight tester (E-DWT)
HV: High volume variable volume if desired (limits max pressure to 100
MPa). Do not include if high volume variable volume is not desired.
AhhhM: Hi Q-RPT designator
AlllM: Lo Q-RPT designator. Do not include if Lo Q-RPT is not desired.
Accessories
E-DWT Liquid Fill Kit To fill E-DWT- delivered dry or to refill.
E-DWT that has drawn in air.
Fluid, Sebacate Sebacate oil, 1 qt.
Case Rugged, wheeled, reusable molded shipping case
Battery Pack/Charger 12 V dc battery with charger
Foot Switch Remote [ENTER] foot switch
Interconnect Kit Connect E-DWT rear test port to test devices
NPT Adaptor Kit Adaptors to 1/8, 1/4, 1/2 NPTF
BSP Adaptor Kit Adaptors to 1/8, 1/4, 3/8, 1/2 BSP
E-DWT-H Quartz Reference Pressure
Transducers (Q-RPTs)
Q-RPT
Designator
A200M-B 200 30,000
1
A140M
1
A100M
1
A70M
A40M 40 6,000
A20M 20 3,000
A14M 14 2,000
A10M 10 1,500
A7M 7 1,000
1.
Available as Hi Q-RPT only. Lo Q-RPT must be A40M or lower.
Battery Pack/Charger. With the optional battery pack/
charger, E-DWT-H can be used remotely for up to eight
hours without the need for line power.
SI Version
Maximum
Range [MPa]
Gauge
140 20,000
100 15,000
70 10,000
US Version
Maximum
Range [psi]
Gauge
The broadest range of calibration solutions
Fluke Calibration provides the broadest range of
calibrators and standards, software, service, support
and training in electrical, temperature, pressure, RF
and flow calibration.
Visit www.flukecal.com for more information
about Fluke Calibration products and services.
8 Fluke Calibration E-DWT-H™ Electronic Deadweight Tester
Fluke Calibration. Precision, performance, confidence.
Fluke Calibration
PO Box 9090,
Everett, WA 98206 U.S.A.
For more information call:
In the U.S.A. (877) 355-3225 or Fax (425) 446-5716
In Europe/M-East/Africa +31 (0) 40 2675 200 or Fax +31 (0) 40 2675 222
In Canada (800)-36-FLUKE or Fax (905) 890-6866
From other countries +1 (425) 446-6110 or Fax +1 (425) 446-5716
Web access: http://www.flukecal.com
©2010-2015 Fluke Calibration. Specifications subject to change without notice.
Printed in U.S.A. 5/2015 3440040c-en
Modification of this document is not permitted without written permission
from Fluke Calibration.
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
Web access: http://www.flukecal.eu
™
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