MTL Safety Barriers Repeater Power Supply MTL4041B

MTL Safety Barriers Repeater Power Supply MTL4041B 

MTL Safety Barriers Repeater Power Supply MTL4041B 

MTL Safety Barriers Repeater Power Supply MTL4041B 

Description

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. 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 hazardousarea current sources and some vortex and turbine meters.

MTL Safety Barriers Repeater Power Supply MTL4041B 

Specification

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 650Ω
 Smart transmitters: 250Ω ±10%
Safe-area circuit output resistance
 >1MΩ
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
Safety description
 Terminals 2 to 5 and 6
 28V, 300Ω, 93mA
 Terminals 5 to 6
 Non-energy storing apparatus ≤1.2V, ≤0.1A, ≤20µJ and ≤25mW; can be connected without further certification into any IS loop with open-circuit voltage not more than 28V
Note: Terminals 5 and 6 do not support HART® communications
MTL Safety Barriers Repeater Power Supply MTL4041B 

MTL Safety Barriers Repeater Power Supply MTL4041B