HD31
- 46 -
V1.6
4.8
CO
2
PROBES
HD31.B3 and HD31.B3-10 CO
2
probes use a double wavelength infrared sensor with
NDIR
technology (Non-Dispersive Infrared Technology). The use of a double filter and of a particular
measuring technique ensures accurate and stable measurement for a long time.
A protective membrane, through which the air to be analyzed is diffused, protects against dust
and atmospheric agents.
During the measurement, it is recommended to stay not too close to the sensor, to avoid alter-
ing the CO
2
values to be acquired.
See paragraph 13.5 at page 100 for CO
2
probe calibration.
For a better measurement accuracy, it is recommended to use the barometric pressure com-
pensation as described at paragraph 9.3 at page 74.
Fig. 4.8.1: CO
2
probe
Note
: when the HD31.B3 probe is inserted, the connector of the instrument immediately next
to the probe cannot be used because of the size of the probe; therefore, only an additional
sensor can be connected.
Содержание HD31
Страница 6: ...HD31 6 V1 6 2 DESCRIPTION Fig 2 1 instrument description...
Страница 149: ...HD31 149 V1 6 NOTES...
Страница 150: ...HD31 150 V1 6 NOTES...
Страница 151: ......