22 • Chapter 3: Operation GX-3R Operator’s Manual
8 . If ID DISP is set to ON (factory setting is OFF, see pg.98), the User ID Screen appears
for a few seconds, followed by the Station ID Screen.
9 . If the GX-3R experiences a sensor failure during start up, the display shows which
sensor failed and the buzzer sounds a double pulsing tone once per second. In the
example below, the combustible gas sensor failed.
Press and release POWER MODE to acknowledge the failure and continue. “- - - -”
replaces the failed sensor’s gas reading. Replace the failed sensor as soon as possible.
10 . If AUTOZERO is set to ON (factory setting is OFF, see pg.98), the instrument prompts
you to do an auto zero. An auto zero operation sets the combustible gas, H
2
S, and CO
channels to zero and the OXY channel to 20.9%.
WARNING: Make sure that the instrument is in a known fresh air environment (an
environment free of combustible or toxic gases and of normal oxygen
content, 20.9%) before performing an auto zero operation. If you perform
an auto zero operation in an area with gases present, the adjustment will
not be accurate.
You must press and release the POWER MODE button to perform an auto zero function.
If you do not press any key, after 15 seconds, the instrument enters Measuring Mode
without performing an auto zero.
U_ID_001
7:49
USEr Id
S_ID_001
7:49
Stn Id
AUTOZERO
7:49
YES / MODE
7:49
NO / AIR
7:49
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