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                   MTL7106/7206 single-channel barrier for transmitters

                  
MTL7106/7206 single-channel barrier for transmitters
MTL7106/7206 for 2-wire 4/20mA and ‘smart’ transmitters
The MTL7106/MTL7206 is a single-channel barrier designed primarily for energising a conventional or 'smart' 2-wire 4/20mA hazardous-area transmitter. They can be thought of as an MTL7128– or an MTL7028– barrier with a built-in floating power supply and electronic over-volt protection. It provides a high voltage output (which is negative with respect to earth) to power the transmitter and delivers a 4/20mA signal into an earthed load in the safe-area. The novel design is noted for its extreme accuracy.

MTL7106/7206 single-channel barrier for transmitters
MTL7106/7206 specification
Supply voltage
20 to 35V dc
Supply current
40mA typical at 20mA with 28V dc supply
45mA typical at 20mA with 24V dc supply
60mA maximum at 20mA with 20V dc supply
Voltage for transmitter and lines
16.0V minimum at 20mA with 250Ω load
11.25V minimum at 20mA with 500Ω load
Note that the output voltage is negative with respect to earth.
Safe-area load resistance
0 to 500Ω
Output current
0 to 23.6mA
Accuracy
±2µA (4 to 20mA)
Out of range capability
Over-range; >20mA to 23.6mA
Under-range; <4mA to 0mA

Other related models for MTL7700 series as below