User Guide | Gas detecting sensor, type PAGM for CO2 and Halocarbon
© Danfoss | DCS (vt) | 2021.03
BC372016561395en-000101 | 5
PAGM-IR FOR CO2 - ONLY
Important:
• The CO2 PGM-IR (PN: 080Z2148) displays CO2 PPM gas readings that are relative to ambient air, NOT
absolute CO2 PPM readings.
• If the air in purge air bag is contaminated, use the EMPTY BAG function to clear the bag, then fill the
bag with clean air.
To turn ON the monitor, lift up the shield located in front of the handle and press the red power ON/
OFF switch.
Important:
• The CO2 PAGM-IR (PN: 080Z2148) during warm-up needs to be filled with ambient/clean air (outside
(prior to CO2 testing.
When the monitor has been powered ON immediately all front panel lights turn ON and a splash
screen appears showing the monitor’s current firmware revision level. After a brief moment the Warm
Up screen is displayed along with the front panel ON light (green) blinking allow the monitor it to
warm up for approx. 5 minutes.
PAGM-IR for halogen gas
After the Warm Up has finished the unit is ready to measure gas, please select the appropriate gas
using the display menu.
During normal operation Display screen shows when the monitor is performing the following
functions:
•
MEASURE
indicates that the monitor is actively measuring the refrigerant gas level at the sample
point. To reset the peak value to zero, press the ENTER button.
•
PURGE
is displayed when the monitor is resetting baseline ppm value using fresh Air.
•
PRES CHK
is displayed when the monitor is performing an atmospheric pressure check, which is
done to ensure the accuracy of the gas measurement under varying atmospheric conditions. This
pressure check is performed every 30 minutes.
PAGM-IR for CO2
Important:
• The CO2 PGM-IR (PN: 080Z2148) has an internal purge air bag that needs to be filled with ambient/
clean air prior to CO2 testing. This air is used to purge the IR detector of sample gas and establish a
“zero” ppm baseline. Therefore, for greatest accuracy, it is important to ensure the purge air bag is
filled with clean ambient air from outside (away from breathing, car exhaust, etc.).
• The CO2 PGM-IR (PN: 080Z2148) displays CO2 PPM gas readings that are relative to ambient air, NOT
absolute CO2 PPM readings.
• If the air in purge air bag is contaminated, use the EMPTY BAG function to clear the bag, then fill the
bag with clean air.
4. General operation
4.1
Normal operation
ABSOLUTE
RELATIVE
436 ppm
386 ppm
0 ppm
50 ppm
MEASURE
50 ppm
Relative CO level in
refrigerant testing area
Absolute
CO level in
ambient air
386 ppm
Adjusted CO baseline
0070 pk
CO
CO
Level
Danf
os
s
80G8244
