MTL5541/S -T REPEATER POWER SUPPLY

MTL5541/S -T REPEATER POWER SUPPLY

The MTLx541 provides a fully-floating dc supply for energising a conventional 2- or 3-wire 4/20mA transmitter, which is located in a hazardous area, and repeats the current in another floating circuit to drive a safe-area load. For HART 2-wire transmitters, the unit allows bi-directional communications signals superimposed on the 4/20mA loop current. Alternatively, the MTLx541S acts as a current sink for a safe-area connection rather than driving a current into the load.Separately powered current sources, such as 4-wire transmitters, can be connected but will not support HART communication.

MTL5541/S -T REPEATER POWER SUPPLY

MTL5541/S -T REPEATER POWER SUPPLY

SPECIFICATION
See also common specification
Number of channels
One
Location of transmitter
  Zone 0, IIC, T4–6 hazardous area if suitably certified
  Div. 1, Group A hazardous location
Safe-area output
  Signal range: 4 to 20mA
  Under/over-range: 0 to 24mA
  Safe-area load resistance (MTLx541)
    @ 24mA: 0 to 360Ω
    @ 20mA: 0 to 450Ω
  Safe-area load (MTLx541S)
    Current sink: 600Ω max.
    Maximum voltage source: 24V dc
  Safe-area circuit output resistance: > 1MΩ
Safe-area circuit ripple
  < 50µA peak-to-peak
Hazardous-area input
  Signal range: 0 to 24mA (including over-range)
  Transmitter voltage: 16.5V at 20mA
Transfer accuracy at 20°C
  Better than 15µA
Temperature drift
  < 0.8µA/°C
Response time
  Settles to within 10% of final value within 50µs
Communications supported
  HART (terminals 1 & 2 only)

MTL5541/S -T REPEATER POWER SUPPLY