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Troubleshooting RTD Sensors
When troubleshooting a problem with an RTD input it is useful to check that the sensor and the
wiring to the instrument is operating properly.
The PIE 211 automatically detects 2, 3 and 4 wire RTD connections with a patented circuit. It will
also display the connections on the display and indicate when there is a missing connection due to
a loose connector, corrosion or a broken wire.
Here is an example of the PIECAL 211 reading a
sensor with all 4 wire connected.
Here is an example where connections are made to a
4 wire sensor and the 211 indicates that only Wires 1,
2 & 4 are connected. There may be a loose connection
or a break in wire 3 somewhere between the sensor
and the 211.
Troubleshooting RTD Sensors
This is much simpler and quicker than going through
the process of testing each pair of wires to figure out
which, if any, connection is loose or which wire is
broken.
