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This unit acts like a direct-current transformer. Always powered from the safe-area side, it ensures that the same current flows in the safe and hazardous-area circuits and allows it to be controlled from either.It is intended primarily for isolating and passing on a 4/20mA signal from a controller to drive a current-to-pressure (I/P) converter or a position actuator. If the loop is sensitive to the volt drop introduced by the unit, then the separately powered MTL3045 should be used. Note that the lower-cost MTL3043 can also be used for driving I/P converters in many closed-loop applications with integral control where its lower accuracy is acceptable
Maximum output voltage:28V from 300Ω
Input and output circuit ripple:<100µA peak-to-peak
Transfer accuracy at 20°C:Better than 50µA
Temperature drift:<2µA/°C
Response time:Settles to within 10% of final value after typically 70ms
Weight:160g
MTL3058
MTL3059
