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.
More information from:
Chell Instruments Ltd
Folgate House
Folgate Road
North Walsham
Norfolk
NR28 0AJ
Tel: 01692 500555
Fax: 01692 500088
e-mail: [email protected]
Website: www.chell.co.uk
