ROTRONIC HM4 - Manual (Page 16)

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 16 of 41
Document Title
© 2014; ROTRONIC AG E-M-HM4-V0_08
Sensor Heating (RoHumiHeat), Time-Dependent
The sensor heating can be activated cyclically. The following time intervals are available:
Hourly
Daily
Weekly
Monthly
The duration of the heating cycle is also freely selectable in minutes.
The temperature of the heated sensor can be selected freely between 0.1 °C and 10 °C above ambient
temperature.
ROTRONIC offers the time-dependent heating function as a feature for applications in which cyclical heating
suffices. Please note, however, that condensation could form on the sensor in an unheated state. If
condensation does form on the sensor when it is in operation, it can only be removed reliably with the
RoHumiClean function (five minutes cleaning at 150 °C).
Temperature differences of more than 3 °C between the sensor and environs caused by heating can have
effects on the external temperature measurement. This is particularly possible in stagnant air because the
heat energy is then not dissipated efficiently.
The start and stop responses follow the general function description above. The function "time-dependent
sensor heating" can be enabled/disabled with the HW4 software.
DRAFT