Achievers Automation Limited
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MTL4041B MTL Instruments Repeater Power Supply
MTL Instruments MTL4041B Repeater Power Supply provides a fully floating dc supply for energizing a conventional 2- or 3-wire 4/20mA transmitter or a 'smart' transmitter located in a hazardous area, and repeats the current in another circuit to drive a safe-area load. For smart transmitters, the unit allows bi-directional transmission of digital communication signals superimposed on the 4/20mA signal so that the transmitter can be interrogated either from the operator station or by a hand-held communicator (HHC). The module can also be used with hazardous area current sources and some vortex and turbine meters.
Product type : Repeater Power Supply
4/20mA, smart, for 2- or 3-wire transmitters
The MTL4041B provides a fully floating dc supply for energising a conventional 2- or 3-wire 4/20mA transmitter or a smart transmitter located in a hazardous area, and repeats the current in another circuit to drive a safe-area load.
Number of channels: One
Location of transmitter: Zone 0, IIC, T4 6 hazardous area if suitably certified
Div.1, Group A, hazardous location
Voltage available for transmitter and lines : 15V minimum at 20mA
Note: maximum open-circuit voltage is 28V
Input and output signal range : 4 to 20mA
Over-/under-range: 1.0mA to 21.5mA
Digital signal bandwidth: 10Hz to 8kHz
Safe-area circuit load resistance: Conventional transmitters: 0 to 650 Smart transmitters: 250 ±10%
Safe-area circuit output resistance: >1M
Safe-area circuit ripple: <50µA peak-to-peak up to 80kHz
Transfer accuracy at 20°C: Better than 20µA
Temperature drift: <1µA/°C
Response time: Settles within 200µA of final value within 20ms
LED indicator Green: one provided for power indication
Power requirement, Vs: 65mA at 24V dc/ 75mA at 20V dc/ 50mA at 35V dc with 20mA signal
Power dissipation within unit: 1.2W at 24V with 20mA signal/ 1.4W at 35V
Isolation : 250V ac between safe- and hazardous-area circuits
