in stocks

　　Quantity: 20pcs

　　Price: US$ 100

　　The MTL4541/MTL5541 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.

　　MTL4541/MTL5541 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)

　　LED indicator

　　Green: power indication

　　Maximum current consumption (with 20mA signal)

　　51mA at 24V Power dissipation within unit (with 20mA signal)

　　MTLx541 0.7W @ 24V dc

　　MTLx541S 1.0W @ 24V dc

　　Safety description

　　Terminals 2 to 1 and 3: Uo=28V Io=93mA Po=651mW Um = 253V rms or dc

　　Terminals 1 to 3:

　　Simple apparatus ≤1.5V, ≤0.1A and ≤25mW; can be connected without further certification into any IS loop with an open-circuit voltage <28V