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Airflow Lufttechnik TH 1-7-31 electronic drum thermohygrograph with x3 chart pens and x60 7 day charts
A rotating drum thermo-hygrograph with clear cover for easy viewing of the chart used for the recording of temperature & relative humidity. Selectable chart periods of either 24hrs, 7 days or 31 days. (Dependant upon paper charts fitted). Split chart enables separate traces for temperature & humidity.
The unit comes complete with two purple chart pens and 60 sheets of 7 day paper.
Temperature measuring range - 5 to 55 °C
Relative humidity measuring range 0 to 100 % rh