Delta Ohm HD37AB1347 [HD37AB1347] Indoor Air Quality Analysis (IAQ) Data Logger

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Delta Ohm
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Measurement of CO2 - CO - Relative Humidity - Temperature - Atmospheric Pressure.
The HD37AB1347 IAQ Monitor is an instrument manufactured by Delta Ohm for the analysis of indoor air quality (IAQ, Indoor Air Quality). 
The instrument simultaneously measures the following parameters, using the P37AB147 SICRAM probe: CO2 Carbon Dioxide, CO Carbon Monoxide, Temperature, Relative Humidity, it calculates Dew Point, Wet Bulb Temperature, Absolute Humidity, Mixing Ratio, Enthalpy and Atmospheric Pressure. The P37B147 SICRAM probe does not measure CO Carbon Monoxide. You can also connect Temperature and Humidity SICRAM combined probes, Hot-Wire Sensor Wind Speed SICRAM probes, Vane Wind Speed SICRAM probes, and Temperature SICRAM probes with Pt100 sensor, to the instrument.

The instrument, using a proper procedure, calculates the percentage of external air input (% Outside Air) according to CO2 Carbon Dioxide, temperature, and Ventilation Rate. The HD37AB1347 is a datalogger with a memory capacity of 67600 recordings per each of the two inputs, divided in 64 blocks. It uses the DeltaLog10 software, version 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, or the input of non sufficiently purified external air (Ventilation Rate). 

The instrument has a wide Dot Matrix graphic display with a resolution of 160x160 dots. The instrument typical applications, using the above range of probes, 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. 


  • Instrument
    • Dimensions (Length x Width x Height) 185x90x40 mm
    • Weight 470 g (batteries included)
    • Materials ABS, rubber
    • Display Backlit, Dot Matrix 160x160 dots, visible area 52x42 mm
  • Operating conditions
    • Operating temperature -5…50°C
    • Storage temperature -25…65°C
    • Working relative humidity 0 … 85% RH without condensation
    • Protection degree IP65
    • nstrument uncertainty ± 1 digit @ 20°C
  • Power supply
    • Mains adapter (code SWD10) 12Vdc/1A
    • Rechargeable batteries 4 1.2V type AA batteries Ni-MH
    • Autonomy 20 hours with 1800mAh Ni-MH batteries (with P37AB147 probe connected)
    • Power absorbed with instrument off < 45μA
    • Security of stored data Unlimited
  • Connections
    • Input for probes with SICRAM module Two 8-pole male DIN45326 connectors
  • Serial interface:
    • Socket: 8-pole M12
    • Type: RS232C (EIA/TIA574) or USB 1.1 or 2.0 not insulated
    • Baud rate: From 1200 to 38400 baud.
    • Data bits: 8
    • Parity: None
    • Stop bits: 1
    • Flow control: Xon-Xoff
    • Cable length: Max 15 m
    • USB interface Type 1.2 or 2.0 non insulated
    • Connection 8-pole M12 Memory Divided into 64 blocks.
    • Storage capacity 67600 recordings per each of the 2 inputs.
    • Logging interval Selectable among: 15, 30 seconds, 1, 2, 5, 10, 15, 20, 30 minutes and 1 hour.

                                                    What's In The Box:

                                                    • (1) HD37AB1347: IAQ Monitor datalogger instrument
                                                    • (1) DeltaLog10 software downloadable from Delta OHM website
                                                    • (4) BAT-40 1.2V type AA Ni-MH rechargeable batteries
                                                    • (1) Operating manual
                                                    • (1) Case
                                                    • Probes and cables have to be ordered separately.


                                                    Instruction manual

                                                    DeltaLog10 software

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