7
Use the ‘Up’ and ‘Down’ buttons to scroll between the available selections.
The selected gas is displayed at the bottom of the screen.
Select the required size nozzle and connect it to the GFM2 inlet fitting
using the extension hose if required.
Insert the arc welding torch nozzle into the GFM2 nozzle ensuring a good
fit. Check that the GFM2 unit is switched on and the correct gas type
selected.
Press the gas purge button on the arc welding set, once the flow has
stabilised read the flow in litres per minute (LPM) on the GFM2 display.
Once the gas stops flowing the GFM2 display will turn red, and display the
total gas consumed. Further gas flows will be added to the gas consumed
total until the ‘Reset’ button is pressed. The total consumed can be read
off the display during gas flow on the ‘Cons’ area of the screen. Peak gas
flow is displayed on the ‘Peak’ screen which shows the highest peak flow
throughout the gas reading or series of readings taken. The ‘Reset’ button
resets these displays to zero also.
2.3.2
Flow Measurement
GFM2 with Nozzle