The Validation Centre (TVC) Ltd

The Validation Centre (TVC) Ltd

Gas Quality Monitor (GQM)

SKU: NFM/0050 Categories: , ,


The GQM is a portable, battery-powered data-logging monitor designed to test, display and record the core critical composition of welding purge and shielding gases.

With a 5.7″ colour LCD screen display for a clear view of the measured parameters and readout of the monitored data, the GQM can be used on both gas cylinders and piped bulk gas supplies up to a maximum of 10 Bar line pressure and for optimum accuracy, the system has an in-built digital flow and pressure controller.

Data-logging of the gas levels is recorded directly on to a 4GB pen stick flash drive along with the test date and time.

The standard unit measures Argon, O2 and moisture but additional options for the measurement of other gas mixes are available. The required sensors are specified at the time of order, however, all GQM units can be retrofitted with additional sensors if required.


  • Measured O2 level: 0.0001% – 5%
  • Measured Moisture level: 0 – 3000ppmv
  • Calculated Ar level: 0 – 100%