MTL5541 Repeater Power Supply 24mA HART LED Indicator
Product Attributes
| Attribute |
Value |
| Number of channels |
One |
| 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 power dissipation within unit |
51mA at 24V |
Product Description
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.
Specifications
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
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ZB24571
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