Making an adjustment with 2 probes - GM70
GM70 User Guide
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- User guide
You need to have 2 probe handles and 2
probes: 1 calibrated probe and the probe to be adjusted. It is recommended to carry out the
adjustment in a stable environment and near the concentration values in which the device is
Switch on GM70.
Take the probe you want to adjust. Unscrew the probe handle screw to expose the adjustment button (see Figure 1). Press the button with a small screwdriver. When pressing the button, the
indicator switches to adjusting mode.
Select CO2 and press
Yes to give the ambient pressure and temperature values. Remember
to check that pressure and temperature values are the same with both probes. To continue
The adjustment mode is now active. Press
Graph to confirm that the readings have stabilized. Go back and
Adjust to select the adjustment method.
Select To same as CO2, press
Select and then
The adjustment is complete. Press
Exit to return to the basic display.
Replace the screw onto the adjusting button.