CB Watch 3 User Manual v6.3 - May 2019 Page 85 of 100
HEATER MONITORING
General Description
Using the RTD8 module, the CBW3 can accommodate up to 8x PT100 temperature
sensors. The number of sensors must be declared during setup.
The first channel is always reserved for the outside ambient temperature, but the other 7
channels can be assigned to measure any temperature. Cabinet temperatures is very
common (to ensure that the heater is working) but measuring tank heater operation is
another common use. So 1x outside ambient, 3x Drive cabinets, 1x control cabinet and
3x tank heaters could be a possible use of the 8 sensors.
By default, the temperatures are displayed in degrees centigrade, but degrees
Fahrenheit can be selected to display in instead.
HMI: Settings / Aux. temperatures
Figure 137 – Number of PT100 sensors
Each temperature sensor can be given a name to make it easier to identify what
temperature is being measured:
HMI: Settings / Aux. temperatures
Figure 138 – Naming of PT100 sensors
This assigned name is displayed in the HMI together with two values per sensor:
- The actual measured temperature
- The positive/negative delta to ambient temperature (measured temp – ambient temp)
HMI: Measurements / Sensors
Figure 139 – Display of PT100 sensors
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