Countronics manufactures microprocessor based auto tune pid controller based on 100% indigenous technology. This controllers is linearised for pt 100 sensor and 3 j, k, r thermocouples with auto cold junction compensation. Some of the salient features of these auto tune pid temperature controllers include advanced algorithm for auto-tuning and control action for excellent temperature control; separate displays for temperature and set point; both relay and ssr outputs for control versatility along with heat/cool logic selection; digitally programmable offset from the front; p, i and d values can be manually set or changed if required; configuration lock using jumper on rear terminals to avoid tampering with the settings; non-volatile memory saves configuration settings; and aesthetically designed front panel with membrane switches and plastic abs cabinet for attractive and rugged construction. The pid temperature controller model 6600 is an ideal choice for industries requiring lower inventory costs with assured after sales service backed by the company in the instrumentation field for over 2 decades.