Siemens SITRANS TH100, Operating Instructions Manual

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SITRANS TH100
Operating Instructions, 06/2010, A5E00331168-02
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Functions
8
8.1 General information
You can operate the SITRANS TH100 using the SIPROM T parameterization software.
The following functions are available to you when operating the SITRANS TH100:
● Setting of overrange/underrange of output current
● Storage of data for identification of measuring point
● Setting of sensor connection (two-, three- or four-wire input)
● Setting of sensor offset, measuring range, unit and damping
● Setting of output current in event of fault, e.g. sensor breakage.
8.2 Output current in event of fault
The sensor lines and electronics of the transmitter are monitored continuously. In the event
of a fault, the output current is set to the fault value. The fault current can be freely selected
within the preset limits of the current control range of 3.6 mA to 23 mA.
8.3 Broken wire monitoring
All sensor lines are permanently monitored for open-circuit. The programmed fault current,
3.6mA to 23mA, is output in the event of an error. The open-circuit monitoring function
cannot be deactivated.
8.4 Short-circuit monitoring
The sensor connected to the transmitter is permanently monitored for short-circuit.
A sensor short-circuit is present if the measured resistance of the connected Pt100 becomes
less than 10 Ohm.
The programmed fault current, 3.6mA to 23mA, is output in the event of a sensor short
circuit.
Monitoring of the sensor short-circuit cannot be switched off.
The short-circuit limit is fixed at 10 Ohm and cannot be changed.