Siemens 3RS2 Manual page 86

Monitoring and control devices temperature monitoring relay
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Connection
11.13 Connection of thermocouples and resistance sensors
Sensor expansion module
Two additional resistance sensors can be connected with the sensor expansion module. This
results in a total of three usable resistance sensors in combination with a 3RS26/3RS28 digital
device.
86
3RS2 temperature monitoring relay
Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002

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