HD32.1
- 94 -
V2.1
6.2.13 HD320B2 probe for the measurement of CO
2
carbon dioxide concentration
HD320B2 probe measures the carbon dioxide concentration in air. It’s indicated for checking and
monitoring the indoor air quality.
Typical applications are the check of the air quality in all the buildings where there is a crowd of
people (schools, hospitals, auditoria, canteens, etc.), in the working places to optimize the comfort.
CO
2
measurement is obtained with an infrared special sensor (NDIR technology: Non-Dispersive
Infrared Technology) that, thanks to the use of a double filter and a special measurement technique,
warranties precise, stable and long-term measurements. The air to check is spread inside the
measurement chamber through the protection membrane placed at the top of the probe.
CO
2
probe calibration
The probe is calibrated by the company and usually doesn't request any intervention by the user.
However, there is the possibility to execute a new calibration that corrects the sensor offset:
•
at 400ppm in clean air
•
at 0ppm with the help of nitrogen cylinder (code MINICAN.12A).
The instrument can automatically recognize the mode of the started calibration: if 400ppm or 0ppm.
The calibration has to be done on one point: each new calibration cancels the previous one.
The concentration of carbon dioxide in air is influenced by different factors: the human activities
(companies, pollution, combustion, etc.) cause an increase of this percentage in air. The calibration
value is equal to 400ppm and it’s in clean air, for example in the country far from the more polluted
areas.
Go on as indicated below:
1.
If you want to calibrate around 400ppm, make sure to apply clean air to the instrument
through a membrane placed on the head of the probe.
2.
For the calibration at 0ppm, remove the cap placed at the base of the probe in order to
discover the plug of the calibration gas inlet and connect the tube coming from the nitrogen
cylinder. Adjust the fluxmeter of the cylinder on the flow from 0.3 to 0.5l/min.
3.
Switch the instrument on and wait for at least 15 minutes before going on.
4.
Press
SHIFT FNC
key: the shortcut window appears. With
▲▼
arrows select “
cal CO2
”
and confirm with ENTER.
5.
Supply CO
2
for at least 2 minutes in order that the measurement becomes stable.
6.
Going on supplying CO
2
to the probe, press
F2 = CAL CO2
function key: the calibration,
which lasts three minutes
, starts. In this phase the instrument measures CO
2
and calibrates
itself to a value next to 0ppm if you are using the nitrogen cylinder, at 400ppm if you are
calibrating it in clean air.
Summary of Contents for HD32.1
Page 6: ...HD32 1 6 V2 1 Thermal Microclimate HD32 1...
Page 78: ...HD32 1 78 V2 1 MIN 350 MAX 1020 120 AP471 S4...
Page 106: ...HD32 1 106 V2 1 Moderate Environment Norm ISO 7730...
Page 107: ...HD32 1 107 V2 1 Moderate Environment Norm ISO 7730...
Page 108: ...HD32 1 108 V2 1 Moderate Environment Norm ISO 7730...
Page 109: ...HD32 1 109 V2 1 Moderate Environment Norm ISO 7730...
Page 110: ...HD32 1 110 V2 1 Moderate Environment Norm ISO 7730...
Page 111: ...HD32 1 111 V2 1 Moderate Environment Norm ISO 7730...
Page 112: ...HD32 1 112 V2 1 12 2 WARM ENVIRONMENT Norm ISO 7243 Norm ISO 7243...
Page 113: ...HD32 1 113 V2 1 Warm Environment Norm ISO 7243...
Page 114: ...HD32 1 114 V2 1 Warm Environment Norm ISO 7243 Norm ISO 7243...
Page 115: ...HD32 1 115 V2 1 Warm Environment Norm ISO 7243...
Page 116: ...HD32 1 116 V2 1 Warm Environment Norm ISO 7243...
Page 117: ...HD32 1 117 V2 1 Warm Environment Norm ISO 7243...
Page 118: ...HD32 1 118 V2 1 12 3 DISCOMFORT ANALYSIS Norm ISO 7730 Norm ISO 7730...
Page 119: ...HD32 1 119 V2 1 Discomfort Analysis Norm ISO 7730...
Page 120: ...HD32 1 120 V2 1 Discomfort Analysis Norm ISO 7730...
Page 121: ...HD32 1 121 V2 1 Discomfort Analysis Norm ISO 7730...
Page 122: ...HD32 1 122 V2 1 Discomfort Analysis Norm ISO 7730...
Page 123: ...HD32 1 123 V2 1 Discomfort Analysis Norm ISO 7730...
Page 124: ...HD32 1 124 V2 1 Discomfort Analysis Norm ISO 7730...
Page 125: ...HD32 1 125 V2 1 12 4 HOT ENVIRONMENT Norm ISO 7933 Norm ISO 7933...
Page 126: ...HD32 1 126 V2 1 Hot Environment Norm ISO 7933...
Page 127: ...HD32 1 127 V2 1 Hot Environment Norm ISO 7933...
Page 128: ...HD32 1 128 V2 1 Hot Environment Norm ISO 7933...
Page 129: ...HD32 1 129 V2 1 Hot Environment Norm ISO 7933...
Page 130: ...HD32 1 130 V2 1 Hot Environment Norm ISO 7933...
Page 131: ...HD32 1 131 V2 1 Hot Environment Norm ISO 7933...
Page 132: ...HD32 1 132 V2 1 12 5 COLD ENVIRONMENT Norm ISO 11079 Norm ISO 11079...
Page 133: ...HD32 1 133 V2 1 Cold Environment Norm ISO 11079...
Page 134: ...HD32 1 134 V2 1 Cold Environment Norm ISO 11079...
Page 135: ...HD32 1 135 V2 1 Cold Environment Norm ISO 11079...
Page 136: ...HD32 1 136 V2 1 Cold Environment Norm ISO 11079...
Page 137: ...HD32 1 137 V2 1 Cold Environment Norm ISO 11079...
Page 138: ...HD32 1 138 V2 1 Cold Environment Norm ISO 11079...
Page 139: ...HD32 1 139 V2 1 Cold Environment Norm ISO 11079...
Page 140: ...HD32 1 140 V2 1 12 6 PHYSICAL QUANTITIES...
Page 153: ...HD32 1 153 V2 1 NOTES...
Page 154: ...HD32 1 154 V2 1 NOTES...
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