Dwyer 25111 Quarter Din Pid Temperature Controller

Product Description

The DWYER 25111 is a quarter DIN digital PID temperature controller designed for precise process temperature management in industrial and commercial applications. It accepts thermocouple inputs in J, K, T, E, and N types and controls temperatures up to 2500 degrees F. The dual 4-digit LCD display shows setpoint and process value simultaneously, giving technicians an at-a-glance read of system status. Output is via solid-state relay (SSR) drive, and the built-in alarm function supports process monitoring. Operating voltage spans 100 to 240 volts AC, making the unit compatible with both domestic and international power supplies. Accuracy is rated at 0.25 percent of full scale.

The 25111 is suited for heat treatment equipment, industrial ovens, kilns, HVAC process skids, and laboratory or light manufacturing environments where tight temperature control is required. The 1/4 DIN form factor fits standard panel cutouts, simplifying retrofits into existing control panels. Licensed electricians and instrumentation technicians are the primary installers. The wide thermocouple input compatibility allows the controller to integrate with existing sensor wiring across a broad range of process setups without requiring sensor replacement.

Key Features

• PID control algorithm for stable, precise temperature regulation
• Accepts thermocouple types J, K, T, E, and N
• Maximum temperature range up to 2500 degrees F
• Dual 4-digit LCD display shows process value and setpoint simultaneously
• SSR output for quiet, long-life switching
• Built-in alarm output for over-temperature or deviation alerts
• Wide input voltage range: 100 to 240 volts AC

Compatibility

Designed as an OEM-style drop-in replacement or new installation for standard quarter DIN panel cutouts accepting thermocouple-based temperature controllers with SSR output.

Installation Notes

Installation should be performed by a qualified electrician or instrumentation technician in accordance with applicable NEC requirements. De-energize the control panel and verify lockout-tagout procedures before wiring. Ensure the thermocouple type selected on the controller matches the installed sensor type to prevent measurement error. Do not exceed the rated input voltage range or connect incompatible sensor types to the input terminals.