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SERIES F4 Process Controller 

The SERIES F4 1⁄4 DIN temperature process controller offers performance features to meet a wide range of industrial processing needs. The F4 process controller is ideal for semiconductor manufacturing equipment, plastic processing and packaging equipment and industrial process control applications.

This process controller features a four line, high definition LCD interface display, in addition to an information key that enables easy set up and control operation, minimizing the chance for error. Its 16-bit microprocessor ensures accuracy and delivers performance advantages you can count on from a Watlow controller.

Four digital inputs remotely modify controller operation or enable display of pre-defined operator messages. Advanced process controller features include cascade, ratio, differential, duplex slide wire and retransmit options.


Control/Limit Loops:  1/0
Alarms:  2
Mounting:  1/4 DIN front panel
Max Output:  2A
Phase Configurations:  1
Ambient Operating Range:  0 to 65°C  (32 to 149°F)
Agency Approvals:  UL®/C-UL®, NEMA 4X, IP65, CE
Communication Protocols:  Modbus® RTU
Display Height:  1.75 in. (44 mm) combined
Warranty (years):  3
Note: The specifications in the table above are best available values in each category. Not all combinations of these values are available in a single model number.

Features & Benefits:

Features Benefits
Guided set-up
  • Removes "guess work" from the set-up process
  • Saves time by reducing programming errors
High definition four-line LCD display
  • Simplifies set up process and operations
  • Quickly and easily identifies process, alarm and set point values
Information “I” Key
  • Displays essential elements from the user manual on board
Customized menuing
  • Quickly displays up to 16 parameters
  • Allows users to create custom messaging and easily identify key events or alarms
High performance 16-bit microprocessor
  • Provides precise process control with 20Hz update rate on input 1. (10Hz on inputs 2 and 3)
  • Calibration accuracy of ±0.1 percent of span
Universal input
  • Embedded software provides application versatility
  • Eliminates the need for dip switches
Modbus® communications ready
  • Equipped to handle RS232 or EIA485 communications

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Related Literature

Specification Sheets (6)

Software and Demos (9)

User Manuals (9)

Quality Certificates (1)

Agency Approvals (1)

Catalogs (1)



SERIES F4 Process Controller
SERIES F4 Process Controller