ROTRONIC HM4 - Manual (Page 38)

E-M-HM4-V0_08
ROTRONIC AG
Bassersdorf, Switzerland
Document Code Unit
HM4 Humidity and Temperature Probe with
Heated Sensor
Instruction Manual
Document Type
Page 38 of 41
Document Title
© 2014; ROTRONIC AG E-M-HM4-V0_08
10.1 Dew Point Accuracy
The HM4 can be configured to calculate the dew point on the basis of the measurement of the relative humidity
and temperature. The accuracy of this conversion varies depending on the humidity and temperature conditions
as shown in Figure 8:
Figure 8: Dependency of the accuracy of dew point calculation from the measured humidity and temperature
values
Example:
At a temperature of 20 °C, a dew point value between -27 °C and 20 °C is calculated with an accuracy of
±0.5 °C or better.
DRAFT