The 2200 series are precision PID temperature controllers, with self-tuning. They have a modular hardware build with up to four control outputs, which can be configured for heating, cooling or alarms. The 2200 series are fully configurable on-site.

A universal input circuit with an advanced analogue to digital convertor samples the input at 9Hz and continuously corrects it for drift. This gives high stability and rapid response to process changes. High noise immunity is achieved by rejection of 50/60Hz pick-up and other sources of noise. The input covers all standard thermocouples, the Pt100 resistance thermometer and linear millivolts, milliamps or DC volts. Input filtering from 1.0 to 999.9 seconds is included.

Custom LEDs provide a bright, clear display of the process value and setpoint. Tactile push buttons ensure positive operation. Access to other parameters is simple and easy to understand and can be customised to present only those parameters that need to be viewed or adjusted. All other parameters are locked away under password protection.

An advanced PID control algorithm gives stable 'Straight-line' control of the process. A one-shot tuner is provided to set up the PID values and to calculate the overshoot inhibition parameters. On electrically heated loads, power feedback is used to stabilise the output power and hence the controlled temperature against supply voltage fluctuations. Dedicated cooling algorithms ensure optimum control of fan, water and oil cooled systems.