Level Sensors
Fisher Level Sensors, in conjunction with either FIELDVUE DLC3000 Series digital level controllers or 2500 Series controllers and transmitters, are designed to measure changes in level or interface.
Level Switches
On-off switch that senses high or low liquid levels. A displacer is used as the sensor and is located in an external cage that mounts to the outside of a vessel.
Level Transmitters
Both digital electronic and pneumatic displacement level controllers are used for accurate level measurement or precision level loop control.
Liquid Level Controllers
The pneumatic level controllers sense the level of a liquid or a liquid-to-liquid interface, compare the level with a desired value (set point) and produce a pneumatic signal that can operate a control valve actuator.
Pneumatic Pressure Controllers
Fisher products compare sensed process pressure (or differential pressure) with an operator-adjusted set point, and send a pneumatic signal to an adjacent control element that maintains the process pressure at or near the set point value.
Transducers (I/P)
Emerson Process Management manufactures a broad range of accessories for use with control valves.
Check out Fisher's Field Instrumentation pages on Emerson's site