RKI Instruments SDM-2012 Standalone Configuration - Manual (Page 53)

Calibrating a GX-2012 • 48
Calibrating a GX-2012
The following instructions apply to GX-2012s with one or more of the standard four
sensors (catalytic LEL, O
2
, CO, and H
2
S). They also apply to GX-2012s with a
%volume combustible sensor. See “Calibrating a Gas Tracer” on page 75 for
instructions to calibrate a Gas Tracer.
When a calibration is performed, the docking station performs a fresh air adjustment
on an instrument and then applies calibration gas to the instrument. The docking
station analyzes the calibration results and determines if the instrument passed the
calibration.
To perform a calibration on a GX-2012:
1. Confirm that the AC Adapter is connected to the SDM-2012 and to an AC wall
socket.
2. Press and hold the SDM-2012’s POWER button. The LEDs will turn amber.
3. When the BUMP
T
and CAL
S
LEDs turn off, release the POWER button.
4. The COPY LED will be off or on steadily and the CHARGE LED will be blinking
green if the SDM-2012 is operating properly or solid red if there is a system
failure. The amount of free memory in the SDM-2012 will dictate the condition
of the COPY LED (see “Available Memory in the SDM-2012” on page 92).
5. Install a GX-2012 in the instrument cradle. The plastic flap should be covering
the recess not in use. Flip the plastic flap over if it is covering the recess you
need to use.
6. Connect the gas out to instrument line to the inlet fitting on the GX-2012.