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ACTIONI/Q® Q520 Loop Powered Multi-Channel T/C Input Isolating, 2-Wire Transmitter

Provides 2 Isolated Current Loops in Proportion to 2 Thermocouple Millivolt Inputs.

  • Two 2-Wire Transmitters in a Single Package
  • Output Linear to T/C Millivolt Input
  • Standard Input Ranges
  • High Density DIN Rail Mounting
  • SnapLocTM Plug-in Terminals<
  • Output Loop Powered from 12 to 35VDC
Q520-2xxx (2 channel)

The Q520 is a DIN rail mount, thermocouple input, dual channel, two-wire transmitter. Each channel accepts a thermocouple input and provides an isolated, 4-20mA output signal, linear to the millivolt input. Cold junction compensation is provided and each channel is fully isolated (1800VDC) from input to output and channel to channel.

All ActionI/Q modules feature SnapLoc plug-in screw terminals for easy installation and low Mean-Time-To-Repair (MTTR). Two or more modules can slide together and interlock for solid, high density mounting (by removing either the foot, or the adjacent unit's faceplate, for right-hand side or left-hand side mounting, respectively). The module to be attached will easily slide on to the side of the mounted unit.

Thermocouple input, two-wire transmitters are used to convert a specific temperature range into a regulated 4-20mA signal. Two-wire transmitters are primarily used in remote locations near the sensor since they reduce the probability of signal errors and save wiring costs by utilizing the two power wires to send the 4-20mA signal. The current signal is usually monitored by a control system or data recorder.

Typically, thermocouples are used to measure high temperatures such as in an oven or furnace. Thermocouple wires can be run a short distance to a panel, or farther with the use of shielded wire, without errors caused by noise or lead resistance in the wires. These sensor wires are usually terminated at the two-wire transmitter and converted into a 4-20mA signal which is highly immune to noise and not affected by lead resistance, both of which can cause significant errors in voltage signals transmitted over long distances.

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CTH Controls Inc.   CTH Controls Inc.
5100 South Service Road, Unit 2
Burlington, ON. L7L 6A5 Canada
Phone: 905-792-6829
Toll Free: 1-888-550-6829
Fax: 905-792-6902
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