Operation
EGM-4 Operator's Manual – Version 4.19
- 20 -
Stand Alone CO
2
Analyzer (Probe Type 0)
To begin recording, press key 1. Immediately after pressing key 1, the instrument will
automatically perform a zero check. Once completed and assuming no problems with the
zero, the instrument will proceed to “Measurement Mode” where the CO
2
value (plus
additional values if optional humidity sensor is present) being measured by the instrument is
displayed as follows:
Where:
C
CO
2
concentration (ppm)
H
Humidity (mb).
Only if optional %RH/Temp sensor is present.
A
Absolute pressure in sample cell (mb).
P
Refers to probe type. See
on page 19.
To return to the Main Menu while in Measurement Mode, simply press the N key.
Note.
If the instrument was just powered up, the display will show “WARM UP DELAY
TEMPERATURE = XX” until the instrument achieves its warm up temperature of 50
o
C prior
to entering into Measurement Mode.
Additional information (i.e. external sensors, etc.) may be viewed on the LCD display if
required. While in Measurement Mode with the CO
2
concentration displayed, subsequent
presses of the 8 key will show additional displays as follows:
C 545
A1011 P00
C 545 H11.2
A1011 P00
Display 1A
(without optional %RH
Sensor)
Display 1B
(with optional humidity
Sensor)
