GMI Gasurveyor 11-500, User Handbook Manual

Page: 64 / 92

C-4
GAS MEASUREMENT INSTRUMENTS LTD.
OPERATION
then Battery status, as shown:
Switch ON (Mode 1)
LEL autoranging to Volume Gas ; Oxygen.
Press and Hold Button One to switch instrument and pump On. This
initiates the instrument’s warm-up cycle.
BUTTON 1
BUTTON 2
GASURVEYOR 11-500
ON OFF
PUMP
ON
OFF
INST.
RANGE PURGE
ALARM ACK.
Switch ON (Mode 2)
0 to 100% Volume Gas ; Oxygen,
for purge applications.
Press and Hold Button Two to
switch instrument and pump On.
This initiates the instrument’s warm-
up cycle.
All LCD segments are displayed
All LCD segments display is
followed by Instrument Type
and Software version,
( )
Next, the instrument
indicates, as month and
year, when the next
calibration is due.
(February 2002 in
example)