Instruction 19-9220
CO
2
Monitor 2800
2.0 OPERATION
2.1 Reading Mode
When the instrument is switched on, there will be a 20 second (approxi-
mately) warm up time before the CO
2
level present in the atmosphere
surrounding the user is displayed. The ON/OFF button should be pressed
quickly when switching the unit on and held down for approximately 2
seconds when switching the unit off.
CO2 PPM CO2
MONITOR 300
When the unit has been turned on, a “confidence beep” will sound for
0.25 seconds every 30 seconds. This should NOT be interpreted as an
alarm condition. The unit has two preset alarm levels which are normal-
ly set to indicate the presence of Carbon Dioxide in concentrations above
5,000 ppm or 10,000 ppm (factory preset levels). The levels can be factory
set at customer specified levels, or can be reset using the BACH-COM
Software (See Section 4.1).
When the CO
2
level rises above the low alarm level:
•
The display will show the concentration and flash once per second.
•
The Alarm LEDs will flash once per second.
•
The beeper will sound intermittently once per second.
When the CO
2
level rises above the high alarm level:
•
The display will show the concentration and flash once per second.
•
The Alarm LEDs will be lit continuously.
•
The beeper will sound continuously.
3