26 • Bump Testing Instruments
begin to blink yellow. If the batteries are fully charged, the
CHARGE LED will become solid green after about 5 minutes.
Typically a bump test or calibration will be initiated before this
happens. See “Charging an Instrument in a Calibration Station” on
page 35 for a complete description of charging the GX-2009.
NOTE:
If the GX-2009 is left in the SM-2009U after calibration or
bump testing, 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 it’s power
up sequence (see exceptions below in step 7). If a successful
connection between the GX-2009 and the SM-2009U occurs, the
TRANSMIT screen will appear on the GX-2009 display and the
CHARGE LED will begin to blink green.
NOTE:
The screen shown above applies to a 4-channel GX-2009. If
your GX-2009 has less than 4 channels, the inactive
channels will not appear in the above screen and in any
screens where channels are displayed. All screens in this
manual assume a 4-channel GX-2009.
7. There are two exceptions to the sequence described in step 6
above. See the GX-2009 User Setup Program Operator’s Manual
for a description of the Cal Limit Display and Cal Limit Check
instrument parameters.
•
When Cal Limit Display is set to On and Cal. Limit Check is
set to Can’t Use, if the GX-2009 is due for calibration the
instrument will show a calibration expired failure screen and the
buzzer and LED arrays will pulse for a few seconds before
50 12.0
TRANSMIT
CO ppm H2S ppm
CH4 %LEL OXY vol%
50 25.0
