3B^rd Floor Scetpa Building, 19A Cong Hoa Street, Bay Hien Ward, Ho Chi Minh City.

SAFETY BARRIER MTL 4544, MTL 4544S, MTL5544, MTL5544S

The MTL4544, MTL4544S, MTL5544, MTL5544S 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

The MTL4544, MTL4544S, MTL5544, MTL5544S 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 MTL4544, MTL4544S, MTL5544, ,MTL5544S 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.

Nhà phân phối MTL tại Việt Nam
Đại Lý MTL Việt Nam
Safety Barrier MTL VietNam
Bộ cách ly tín hiệu IS VietNam

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SPECIFICATION

See also common specification

Number of channels: Two; Fully floating, loop powered
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 (MTLx544); @ 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)