MTL4788+ and MTL4788R+ FOR TWO 4/20mA TRANSMITTERS.

The MTL4788+ and MTL4788R+ are twin 2-channel barriers designed for use with 4/20mA transmitters in IIC gas groups. The MTL4788+ is an alternative to MTL4787/4787P units in installations using closely regulated power supplies. Channels 1 and 3 supply power, with channels 2 and 4 acting as signal returns in each of the two transmitter loops. MTL4788R+ is similar to the MTL4788+ but includes a 250Ω precision resistor on the hazardous side of channels 2 and 4 to provide a 1–5V output to the safe area. The modules will operate with bussed power if this is available.

MTL4700 series

Product Code Description

MTL4700  MTL4700 Series Common Specification

MTL4706+  2ch - 2-wire 4/20mA & smart Tx

MTL4715+  4ch - 12V DC applications

MTL4722+  4ch - 18V DC applications  

MTL4728–  4ch - negative & floating supplies  

MTL4728+  4ch - digital or 4/20mA outputs

MTL4755ac  3ch - 3-wire RTD applications

MTL4760ac  2x2ch - two thermocouples/AC sensors/4-wire RTD

MTL4763Pac  3x2ch - strain-gauge bridges

MTL4778ac  2x2ch - 2-wire DC & AC systems

MTL4781+  4ch+1 - 4 switches + 1 supply

MTL4787+  2x2ch - multi-purpose inputs/outputs

MTL4787P+  2x2ch - hi-power multi-purpose inputs/outputs

MTL4788+  2x2ch - 4/20mA Tx

MTL4788R+  2x2ch - 4/20mA Tx + voltage output

MTL4796–  2x2ch - vibration probes

MTL4799  Dummy barrier