Instructions

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1. GENERAL CHARACTERISTICS
HD21ABE and HD21ABE17 IAQ Monitors are bench-top/portable instruments manufactured by
Delta Ohm for the analysis of indoor air quality (IAQ, Indoor Air Quality).
The instruments simultaneously measure the parameters: CO
2
Carbon Dioxide, CO Carbon
Monoxide and Atmospheric Pressure.
The HD21ABE17 instrument also measures Temperature and Relative Humidity, and it
calculates Dew Point, Wet Bulb Temperature, Absolute Humidity, Mixing Ratio and Enthalpy.
HD21ABE and HD21ABE17 are dataloggers with a memory capacity of 67600 recordings, divided
in 64 blocks. They use the DeltaLog10 software from version 0.1.5.3.
Reference Standards: ASHRAE 62.1, Legislative Decree 81/2008. These regulations apply to all
confined spaces that could be used by people. Kitchens, baths, changing rooms and swimming
pools are included, due to their high humidity. You should take into account, in regard to air
quality, possible chemical, physical and biological contaminants.
The instruments have a wide Dot Matrix graphic display with a resolution of 160x160 dots.
The instruments typical applications are:
• Measurement of IAQ (Indoor Air Quality) and comfort conditions in schools, offices and
indoor spaces.
• Analysis and study of the Sick Building Syndrome, and of the resulting consequences.
• Checking the HVAC (Heating, Ventilation and Air Conditioning) system efficiency.
• Examination of IAQ conditions in factories to optimize microclimate and improve
productivity.
• Building Automation checks.