The 3-Channel Temperature Scanner/Controller from P.J. Electronics is compact unit housed in a standard 96x192 mm frame size panel mounting box with a depth of 150mm ( cutout size 92x188 mm). It works on 230 V AC,+/- 10% 50Hz Supply. The unit is vertical mounting type and all displays and control keys are located on front. It can be programmed for three different set points, in degree Celsius, for three channels, and control the set temperatures by switching of heaters through external solid state relays. The unit can accept any one type of (prespecified) input feedback as Pt-100 RTD or Thermocouple.
Method of control of temperature will be time proportional type, which can achieve close control on temperature if proper wattages of heaters are selected. Deadband can be programmed separately for each channel. The unit is capable of indicating faults such as faulty sensors, probability of fault in heaters, etc. In case of any fault occurs audio-visual indication is given. Look of this product is very similar to the above shown photograph.