EDITOR’S CHOICE
GAS METER TEST RIG SOLUTIONS FOR EVERYONE
When a client approached Chell Instruments
with a specific challenge, our engineering
team got straight to work. Using our industry-
leading expertise and experience, the ideal
solution was developed to satisfy their gas
meter calibration requirements.
Now, a version of the Gas Meter Test Rig
(GMTR) we created is available from Chell
for everyone wishing to test and calibrate
domestic gas meters, including manufacturers
and calibration houses.
The GMTR is a multi-channel benchtop
system that allows testing of the functionality,
accuracy, stability and leak integrity of up to
four domestic gas meters simultaneously.
It is compatible with older ‘diaphragm’ type
positive displacement meters, as well as the
newer ‘smart’ ultrasonic meters.
As you’d expect, the device contains high
accuracy flow, pressure and temperature
instrumentation and can generate any flow
set-point up to 12,000 litres per hour while
maintaining a safely low outlet pressure
to prevent damage to the gas meters
under test. For valid error comparisons,
the combined mass flow, pressure and
temperature measurements can be used
to calculate the true volumetric flow rate at
each flowrate.
The system consists of a custom enclosure
and a triple-range flow manifold with
pneumatically operated isolation valves.
Pipework and custom gas meter outlet
blocks allow volumetric flow conversion for
up to 4 gas meters in series.
The system has a mass flow error of 0.4%Rdg
+0.2%FS and also contains 4 pressure
transducers and 4 PRT temperature probes,
all connected to custom fixtures in the
interconnecting pipework. The on-board
display modules provide mass flow control
and display, pressure and temperature
measurement display and valve control.
Remote monitoring and control is also
possible via the built-in webserver or with
the user’s own software.
The GMTR is supplied with all parameters
calibrated with ISO17025 certification in our
UKAS accredited calibration laboratory and
is the latest flexible addition to our range of
gas meter test systems, adaptable to each
customer’s needs.
www.chell.co.uk
Leaders in bespoke
calibration & test systems
With over 40 years experience designing
and building high integrity test and calibration
systems, Chell’s engineers are ready to
design complete solutions for your production
calibration needs.
Pressure, Vacuum & Gas Flow
Automated Product Calibration
All Cal. Standards to ISO17025
All Design & Build to ISO9001
Ask your engineers to call our engineers, they
almost certainly speak the same language.
Chell Instruments Ltd
www.chell.co.uk . [email protected]
+44 (0) 1692 500555
36 Channel
Smart Gas Meter
Calibration System
Issue 36 PECM
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