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6
1. GENERAL CHARACTERISTICS
The Thermohygrometer Model HD2301.0R is a portable instrument that measures an environment's
temperature and relative humidity.
It is fitted with a large LCD display for excellent visualization of the measured data. The
Thermohygrometer Model HD2301.0R measures:
• relative humidity and temperature using combined probes, fitted with a Pt100 temperature
sensor or thermocouple;
• temperature only by immersion, penetration, or contact probes. The sensor can be a Pt100 or
Pt1000.
When the combined humidity/temperature probe is connected, the instrument calculates and
displays the following data:
• absolute humidity,
• dew point,
• partial vapour pressure.
The probes are fitted with the automatic detection SICRAM module, with the factory calibration
settings already being memorized inside.
The units of measurement are the following:
1. %RH % of relative humidity
2. g/m
3
Grams of vapour in a cubic meter of dry air
3. hPa Partial vapour pressure (hPa)
4. Td Dew point (°C or °F)
5. °C/°F Temperature in Celsius (°C) or Fahreneit (°F) degrees.
Using the Max, Min and Avg function of this instrument respectively obtains the maximum,
minimum or average values.
Other available functions are:
• the relative measurement REL;
• the HOLD function;
• the automatic turning off which can also be disabled.
For further details see chapter 2.