Casella Thermohygrograph – Daily or weekly – quartz clock


 Thermohygrographs continuously record both the temperature and the relative humidity of the atmosphere against time by drawing coloured traces onto a chart. Thermohygrograph standard model is the more practical instrument and is slightly more accurate on temperature. The standard model is provided with a daily/weekly/monthly quartz clock, which can be set by the user.
  • Description
  • Specifications
Humidity section :
Range : 0 to 100%
Accuracy : +/- 3% between 20% & 80%
Sensing element : Specially treated human Hair

Recording section : (Either)
Battery operated quartz clock with simple mechanism for changing rotation from daily to weekly or, Clockwork clock – Daily or weekly rotation
Recording is effected by easily changed fibre tipped pen.

Temperature section :
Range (either) :
0 to 50 degrees C
-5 to 55 degrees C
Accuracy : +/- 0.5 degrees C
Sensing element : Bi-metalic coil (corrosion protected)