HD32.1
- 90 -
V2.1
6.2.12 HD320A2 probe for the measurement of CO Carbon monoxide
HD320A2 probe measures the carbon monoxide concentration in air. It’s a colorless, odorless gas,
lighter than the air and it can cause explosions or fires. It is poisonous even in low quantities:
indeed, it’s sufficient a concentration of 10-30ppm of carbon monoxide in air to produce symptoms
of poisoning and about 2000ppm are fatal in less than 30 minutes.
Carbon monoxide is formed when substances containing carbon are burned in absence of oxygen,
or when, although the amount of oxygen is sufficient, the combustion occurs at high temperature,
e.g. in car engines.
Carbon monoxide is one of the major pollutant agents in urban areas. Moreover, being odorless, is
an insidious poison.
Together with the HD320B2 probe, the HD320A2 probe allows analyzing and monitoring the air
quality in internal environments and detecting any loss of CO.
The sensor for the measurement of CO consists of an electro - chemical cell with two electrodes.
CO 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 make a new calibration that corrects the sensor zero:
•
in clean air (outside the CO concentration is less than 0,1ppm)
•
With the help of nitrogen cylinders (code MINICAN.12A).
CO zero calibration in clean air:
1.
Place the instrument in an environment with clean air (outside, far from the companies or
the streets, the CO concentration is less than 0.1ppm), switch the instrument on and wait at
least 15 minutes till the measurements becomes stable.
2.
Press
SHIFT FNC
key: the
shortcut
window appears. With
▲▼
arrows select “cal CO”
and confirm with ENTER.
3.
The screen for the operation to do on the sensor appears (calibration or replacement):
4.
With Up and Down arrows, select “Cal zero” and confirm with ENTER. The screen for the
calibration of CO sensor appears.
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...
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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...
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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...
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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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