» Fisher™ · Instrumentation
Pneumatic Controllers & Recorders
Standalone process control where it makes sense — Fisher™ pneumatic controllers sense pressure, differential pressure or temperature and send a corrective air signal to the valve.
- Pneumatic process control
- Pressure · differential · temperature
- Field-proven & rugged
- Genuine OEM parts
What it is
Control without a control room
A pneumatic controller measures a process variable — pressure, differential pressure or temperature — compares it to an operator-set point, and outputs a corrective air signal straight to the valve. It closes the loop locally, with no electronics or control system required.
That makes it the right tool for remote sites, simple loops and hazardous areas where air is available and electronics aren't wanted. Rugged, field-proven and fully serviceable with genuine Fisher™ parts.
The line
Fisher™ pneumatic controllers we supply
Genuine Fisher™ controllers and transmitters. Tell us the variable, range and output you need and we'll confirm the right one.
Fisher™ C1
Pneumatic controller and transmitter that senses pressure or temperature and sends a corrective air signal to the final control element — rugged, field-proven process control.
Fisher™ 4195K
Pneumatic gauge pressure indicating controller — displays process pressure and setpoint while adjusting its pneumatic output to hold the setpoint.
Fisher™ 4194
Pneumatic differential-pressure controller — senses two pressures and controls on the difference, for monitoring and process control.
Genuine OEM
Genuine Fisher™ controller spare parts
A controller holds its calibration only with the right relay, bellows, nozzle/flapper and seals. We supply genuine Fisher™ repair kits, relays, gauges and gaskets so a C1, 4194 or 4195K keeps measuring and controlling as designed.
Tell us the process variable, range and output action — our team will confirm the right Fisher™ controller or genuine parts.
Resources & tools
Spec it, look it up
Each model above links to its Fisher™ bulletin. Here's the rest of what you need to select and support a controller.
Technical library
Handbooks & application guides
The Fisher™ reference material behind every instrument selection.
Browse the library →Free tool
Fisher™ Obsolete & Inactive Lookup
Running a discontinued Fisher™ controller or recorder? Find its recommended replacement.
Look it up →Positioners
Valve positioners & FIELDVUE™
Pneumatic, electro-pneumatic and digital valve controllers.
View positioners →Downloads
Datasheets & bulletins
Controller and instrument literature across the Fisher™ line.
Browse downloads →Need a Fisher™ controller or parts?
Tell us the variable and output — genuine OEM, shipped from our Orlando, FL warehouse.