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27
4.5
P
ROBES
C
ALIBRATION
The instruments and sensors are calibrated in the factory; no calibration is usually required by the
user. However, you can perform a new calibration.
You can perform the calibration of the CO (Carbon Monoxide) and CO
2
(Carbon Dioxide) sensors.
With the HD21ABE17 instrument
you can also perform the calibration of the RH (Relative
Humidity) sensor.
No calibration is allowed for the Temperature sensor (HD21ABE17).
To calibrate the probes correctly, a knowledge of and abiding by the physical phenomena on which
the measurement is based is fundamental: this is the reason why it is recommended to abide by what
is reported below carefully and only to perform new calibrations if technically proficient.
PROBES CALIBRATION
1) Calibration CO
2
2) Calibration CO
3) Calibration RH
▼▲
select
<ESC> exit/cancel
<ENTER> confirm
4.5.1 CO
2
Calibration
Use the arrows
▲▼
to select the
1) Calibration CO
2
item:
PROBES CALIBRATION
1) Calibration CO
2
2) Calibration CO
3) Calibration RH
▼▲
select
<ESC> exit/cancel
<ENTER> confirm
Confirm with ENTER. The following screen will appear:
Summary of Contents for HD21ABE
Page 2: ...2 HD21ABE Indoor Air Quality Monitor...
Page 4: ...4 HD21ABE17 Indoor Air Quality Monitor...
Page 48: ...48 NOTES...
Page 49: ...49 NOTES...
Page 50: ...50 NOTES...
