RKI Instruments SDM-2009 - Manual (Page 27)

Overview • 23
Chapter 4: Operation
Overview
When you have completed the tasks in "Chapter 3: Preparing to Use the SDM-2009",
you are ready to use the SDM-2009 docking station. The SDM-2009 is capable of
performing bump tests and calibrations on the GX-2009. It can also charge the
rechargeable batteries in the instrument. This chapter describes procedures for using
the docking station to bump test, calibrate, and recharge instruments in the
standalone configuration of the docking station. It also describes the information that
is saved in the docking station’s memory and how to save that information to a USB
flash drive for use with the Single Module Data Viewer Program.
Bump Testing a GX-2009
The following instructions apply to GX-2009s with one or more of the standard four
sensors (catalytic LEL, O
2
, CO, and H
2
S).
When a bump test is performed, the SDM-2009 performs a fresh air adjustment on a
GX-2009 and then applies calibration gas to the instrument. The docking station then
analyzes the response results based on criteria defined by the bump test check
tolerance parameter and determines if the instrument passed the bump test. The
bump test check tolerance is defined in “Bump Test Check Tolerance (CHE)” on
page 15. If the automatic calibration parameter is set to ON, then the SDM-2009 will
automatically perform a calibration if the bump test fails.
Do the following to perform a bump test on a GX-2009:
1. Confirm that the AC Adapter is connected to the SDM-2009 and to an AC wall
socket.
2. Press and hold the SDM-2009’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-2009 is operating properly or solid red if there is a system
failure. The amount of free memory in the SDM-2009 will dictate the condition
of the COPY LED (see “Available Memory in the SDM-2009” on page 38).
5. Install a GX-2009 in the instrument cradle.
NOTE: If the GX-2009 is left in the SDM-2009 after bump testing or calibration,
the pump will run for 12 seconds every 2 minutes in order to keep
hydrogen generated from charging of the NiMH batteries from affecting
the CO sensor.
6. Press and hold the POWER MODE button on the GX-2009 until you hear a
beep, then release it. The GX-2009 will begin its power up sequence (see
exceptions below in step 7). If a successful connection between the instrument