MTL3072 repeater powder supply

MTL3072 repeater powder supply

The MTL3072 accepts a signal from a 3-wire resistance temperature detector (RTD) in the hazardous area, and converts it to a 4/20mA loop current in the safe area proportional to resistance (but nottemperature). Calibration is carried out by the user via controls located in the top and the side of the unit. Input zero and span are selected by switches (coarse adjustment) anpotentiometers (fineadjustment)

Number of channels:One, fully floating

Span (fully adjustable by switches and potentiometers):25 to 800°C

Zero (fully adjustable by switches and potentiometers):–200 to +400°C

Common-mode ac rejection:<0.1% error for 250V rms, 50Hz

Loop supply voltage:15 to 35V dc

Output range:4 to 20mA

Maximum load resistance:50(Vs –15) Ω

Response time:Settles to within 10% of final value after typically 250ms

RTD excitation current:400µA

Line resistance:100Ω maximum in each line

Weight:170g

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