XTR112 114 isolated transmit receive circuit diagram of the ring

As shown, collected at the scene RTD temperature, it is converted into a voltage by the XTR112/114 voltage is converted into 4 ~ 20mA current output, and then the twisted pair

transmission, RCV420 reception, isolation amplifier ISO124 isolation amplifier, the output 0 ~ 5V voltage. Excellent anti-jamming performance of the circuit can be applied to long-distance transmission interference or big occasions. The figure for the three-wire RTD connection, if the connection with the two-wire RTD, then remove RLIN2.

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