Condensation prevention functions - DMP5 - DMP6 - DMP7 - DMP8 - DMPX

DMP Series User Guide

Document code
M212357EN
Revision
D
Language
English
Product
DMP5
DMP6
DMP7
DMP8
DMPX
Document type
User guide

The sensor warming feature of the condensation prevention function is intended for improving the condensation tolerance of the probe. It warms the humidity sensor when necessary to keep the sensor's temperature above the dew point of the measurement environment. When sensor warming is activated, all temperature-dependent output parameters become unavailable, unless the temperature compensation setting is set to read the temperature from an external source. The output parameters become available again 4 minutes after the warming is stopped.

The humidity limit where sensor warming activates is:

  • 80 %RH for DMP probes with S sensors
  • 70 %RH for DMP probes with M sensors

In addition, the DRYCAP® sensor is kept continuously warmed in freezing conditions to ensure fast response time. Therefore, the temperature and dependent parameters are continuously unavailable if process temperature is below 0 °C / 32 °F.