Sensors & Transducers

Calog’s DIN-rail mount programmable transmitter

May 2014 Sensors & Transducers

Calog Instruments’ versatile Calog 9000 – a miniature DIN-rail mount programmable isolated transmitter – has consistently sold well into the market, due partly to its reliability and partly to the versatile range of programmable inputs SmartView software allows. With dimensions of only 92 x 92 x 26 mm, the unit is a space saver with configuration and field calibration done via a notebook computer or desktop PC.

This transmitter offers complete 3-way isolation between power supply, input and output. The inputs are programmable to accept thermocouples of type J, K, N, R, S, T and W5, RTDs of type Pt100 or Ni100, mV inputs up to 52 mV, 0-2 0 mA/4-20 mA inputs, volt inputs up to 10 V, potentiometer inputs and frequency inputs from NPN/PNP proximity switches.

Integral 2-wire transmitter power is supplied as standard with the unit, as is a precision reference for potentiometer inputs. The analogue output is programmable for 0-20 mA/4-20 mA or 0-10 V output. The input power supply is 95-265 VAC/DC as standard. The serial interface allows connections to remote computers and scada systems using DPM’s DIGIbus protocol. The RS-485 option allows up to 99 transmitters to be linked on the same bus. The unit can also accept an ASCII based serial input signal for conversion to an analogue output signal. The linearisation feature is standard and the user can select s-curve, sphere, square-root extraction or off (no linearisation).

Model 9240 offers a 24 VDC isolated power supply and both units meet European EMC directive 89/336/EEC and Low Voltage directive 73/23/EEC.

Locally designed and manufactured by Calog, the 9000 forms part of its extensive range of high quality process control instrumentation.

For more information contact Pieter Deysel, Instrotech, +27 (0)11 462 2204,,


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