These multifunction Model 535 1/4 DIN Single Loop Process Controllers provide PID control of any analog process variable (temperature, pressure, level and flow) in batch and continuous process applications. Available models of the 535 Process Controllers provide a proportional analog control signal output that is typically used to regulate a control valve or similar final control element. Also available, are process controller models with alarm trip outputs for on/off control or to warn of unwanted high/low conditions, and with RS-485 communications for interface with digital-communicating DCS, PLC, and PC-based SCADA systems.

When ordered with the Profile Controller option, the 535 Process Controllers provide full ramp and soak capability with 20 recipes and 24 segments per recipe; guaranteed soak with adjustable hysteresis; three event output capability; and a ramp that can be programmed to take place over a specific amount of time or to be based on PV rate of change per hour.

535 Process Controllers offer advanced tuning features which allow you to bring the process under control faster, more accurately and far more easily than competitive single-loop controller, PLC and PC-based strategies. Its autotune capability constantly analyzes your process and makes modifications to the tuning parameters to ensure precise, long-term, stable control.

Major Features of these Process Controllers:

• Universal input (mA, mV, V, RTD, Thermocouple)
• Isolated analog outputs for process controllers (4-20mA or 0-20mA)
• Alarm trip outputs (control, high/low, deviation and rate of change)
• PowerTune delivers pretuning, adaptive tuning and powerback anti-overshoot
• Quick setup of process controllers with plain-English menu prompts and large back-lit keys
• NEMA 4X front panel with extra-bright 2-line, 5-digit PV display
• RS-485 digital communications