MTL Safety Barriers Crouse-Hinds Intrinsically Safe Isolators MTL4544S

MTL Safety Barriers Crouse-Hinds Intrinsically Safe Isolators MTL4544S 

MTL Safety Barriers Crouse-Hinds Intrinsically Safe Isolators MTL4544S 

MTL Safety Barriers Crouse-Hinds Intrinsically Safe Isolators MTL4544S 

MTL4544/S – MTL5544/S REPEATER POWER SUPPLY

2-channel, 4/20mA, HART®, 2- or 3- wire transmitters

The MTLx544 provides fully-floating dc supplies for energising two conventional 2-wire or 3-wire 4/20mA or HART transmitters located in
a hazardous area, and repeats the current in other circuits to drive two safe-area loads. For smart transmitters, the unit allows bi-directional
transmission of digital communication signals superimposed on the 4/20mA loop current. Alternatively, the MTLx544S 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.

MTL Safety Barriers Crouse-Hinds Intrinsically Safe Isolators MTL4544S 

SPECIFICATION
Number of channels
Two
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 (MTLx 544)
@ 24mA: 0 to 360Ω
@ 20mA: 0 to 450Ω
Safe-area load (MTLx544S)
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 and 4 & 5 only)

MTL Safety Barriers Crouse-Hinds Intrinsically Safe Isolators MTL4544S 

Type

MTL4544S – MTL5544S

MTL Safety Barriers Crouse-Hinds Intrinsically Safe Isolators MTL4544S