BA_049_2019-06_10.00 Resistance thermometer clamp-on technology
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4
Operation
During device operation, take care that the device remains within its intended temperature
range. No other monitoring is necessary.
Permissible media temperature:
-
40…150 °C
Permissible ambient temperature:
-
40…100 °C
When supplied with a transmitter, the permissible ambient temperature is reduced to 85°C.
Restricted ambient conditions may apply in explosion protected environments (see
XA_001).
4.1 Calibration
We recommend an annual recalibration.
Uninstall only the measuring insert. This way the measuring position remains unchanged
as it is defined by the clamping element.
During calibration you must not exceed 100 °C at the electrical connector due to inside
gaskets. If your device is equipped with an integrated temperature transmitter you must
not exceed 85 °C at the housing.
Apply new heat conductive paste when you reinstall the measuring insert after the calibra-
tion. This ensures a good and constant thermal coupling between insert and pipe.
For further details please consult the separate calibration guideline for the Clamp-on family
(TA_008).
4.2 Maintenance / Service
When properly installed in accordance with applicable specifications, this device is
maintenance-free. However, we recommend an annual recalibration of the device.
In the event of a device malfunction, you can only replace the complete measuring insert
resp. the clamping element.
5
Disassembly
When measuring hot media, make sure that the device has cooled down prior to any dis-
mounting or wear appropriate protective clothing to avoid burns.
Switch off the power supply to the device before disconnecting the electrical connections.
Once this is done, the device may be mechanically removed.
