The Dwyer Series 4B is a highly versatile and compact digital temperature controller designed to provide precise PID regulation for industrial and commercial boilers and process heating applications. Its 1/16 DIN form factor makes it an ideal choice for space-constrained control panels while delivering performance typically found in larger, more expensive units.

Advanced Intelligence and Ease of Use

• One-Touch Self-Tuning: The 4B series features an intelligent self-tuning function that automatically calculates optimal PID parameters, ensuring stable temperature control even in systems with fluctuating loads.
• Universal Input Configuration: Users can easily configure the device for multiple thermocouple types, RTDs, or linear DC signals via the front keypad, reducing inventory requirements for maintenance teams.
• Rugged Design: The IP66/NEMA 4X front panel protection ensures that the controller remains operational in harsh environments where dust and moisture are present, such as boiler rooms.

Key Functional Features

• Configurable Alarms: Includes high/low and deviation alarms to protect boiler systems from over-temperature conditions.
• Process Stability: The fast sampling rate and high accuracy (0.25% of span) ensure that energy consumption is minimized through precise thermal management.
• Direct/Reverse Acting: Easily switchable control actions for either heating (reverse) or cooling (direct) applications.

Typical Applications

• Commercial and industrial boiler temperature management
• Food and beverage processing equipment
• Small-scale industrial furnaces and kilns
• Packaging and heat-sealing machinery