Connection instructions for earthed/potential-free thermocouples

Due to the differential inputs of the terminals, different connection types are recommended depending on the type of thermocouple used. For earthed thermocouples, ground is not connected to the shielding. If the thermocouple does not have an ground connection, the ground and shielding contacts can be connected (see Fig. Connection of earthed and earth-free thermocouples and Connection instructions for thermocouples).

Connection instructions for thermocouples Earthed thermocouple Potential-free / earth-free thermocouple Non-potential-free thermocouple Unused inputs

Fig.83: Connection methods for earthed and earth-free thermocouples

The example shows EL3312. For the EL3314, the shield should be connected to an additional shield terminal (EL9195).