RKC Instrument is a manufacturer of PID temperature and process instrumentation ranging from discrete controls to a multizone “ build your own” control system. Programmable controllers have active tuning and fuzzy-logic algorithms to suppress overshoot during start-up and process upsets. Additional products include pressure control, relays, heater break and loop break alarms, resin pressure indicator and sensor, and valve positioners. Profibus, EtherNet and DeviceNet communications are available as well as a PLC interface that requires no additional programming. Worldwide sales and support since 1937.