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SC Automation Limited
Verified Supplier
3 Years
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3 Years
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| Brand Name : | MTL |
| Model Number : | MTL4541 |
| Certification : | CE |
| Price : | negotiable |
| Payment Terms : | T/T |
| Supply Ability : | 100pcs per month |
| Delivery Time : | on request |
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.
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
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