First, for the wiring, the safety spark circuit (the input signal line), must be with an insulating sleeve wire or a shield, and non safety spark circuit wiring should be isolated from the safety spark circuit to avoid mixed contact.
Second, wire different types of integrated temperature transmitter according to the specification. And there should be nothing wrong with explosion-proof instrument which has the safety spark circuit. You should carefully check whether there is a short circuit or any other wrong wiring.
Three, in the use of the integrated temperature transmitter, special attention should be paid to the distinction of common type and intrinsic safe type. Ordinary type cannot be installed in hazardous area, while the intrinsic safe type can be done that.
Four, RTD transmitter input is in the three-wire system. Resistance of each connecting wire line should be equal and in the same environment temperature range.