The hygro-thermograph serves for the automatic recording of the temperature and the relative humidity.
The temperature is measured by a bimetal element Bourdon type and the relative humidity of a hair. Both measured values are separately recorded on a chart by two pens.
Clock Quartz clock: 1 day and 32 day changed by speed switch Battery: “C” size battery x 2 Manganese Battery life: 1 year for continuous use
Sensors Aged bimetal strip for temperature Human hair bundle for relative humidity
Measuring range Minus 10 to 50°C for temperature Minus 15 to 40°C for temperature 0 to 100% for Relative humidity
Accuracy
±1°C (at 10 to 30°C for temperature
±2°C (at other than above) for temperature
±3%rH (at 15 to 25°C, 20 to 95%) for Relative humidity
±5%rH (at other than above) for Relative humidity
Chart graduation 1°C for temperature 1% for R. humidity
Recording pens
Cartridge pens (violet)
Dimensions W 336 x H 295 x D 148 mm Weight approx. 3.1 kg
Accessories
7 day chart for 1 year use (55 sheets/box) Test result