Fisher® Field Instrumentation
Fisher® field mounted instruments provide monitoring and control to final control devices. Transducers, controllers, volume boosters, solenoids and switches are used to monitor and control flow, temperature, pressure and level variables in the process industry.
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.
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Fisher® Caged Displacers |
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Fisher® Cageless Displacers |
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Caged sensors provide more stable operation than do cageless sensors for vessels with internal obstructions or considerable internal turbulence. |
Cageless sensors are generally used on applications requiring large displacers that are accommodated |
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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.
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Fisher® 2100 |
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On-off Fisher® 2100 pneumatic switch and Fisher 2100E electric switch sense high or low liquid levels. |
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Level Transmitters
Both digital electronic and pneumatic displacement level controllers are used for accurate level measurement or precision level loop control. Fisher® displacement level technology is applied in level, level interface and density applications. Displacement level technology is proven to be reliable and accurate for a wide variety of process mediums and conditions.
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Fisher® DL3 |
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Fisher® DLC3010 HART® Digital Level Controller |
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Fisher® DLC3020f Fieldbus Digital Level Controller |
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The integration of a wafer-style liquid level sensor and transmitter in one product, the Fisher® DL3 enables users to install digital level transmitters. |
DLC3010 digital level controllers are used with level sensors to measure liquid level, the level of interface between two liquids, or liquid specific gravity (density). |
The Fieldbus DLC3020f digital level controller is a fieldbus communicating instrument used to measure liquid level or the level of interface between two liquids using displacement sensor technology. |
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Liquid Level Controller - Electric
The electric on-off level controller is used to sense liquid level and when used in conjuction with the Fisher® easy-Drive™ electric actuator form a fully electric level control loop which eliminates pneumatic controller and dump valve venting.
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Fisher® L2e |
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The Fisher® L2e electric on-off level controller uses a displacer type sensor to detect liquid level or the interface of two liquids of different specific gravities. |
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Liquid Level Controllers - Pneumatic
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 an actuator control valve.
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Fisher® 2500 |
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Fisher® L2 and L2sj |
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Fisher® L3 |
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Fisher® 2500 pneumatic level controllers are rugged, dependable, and simply constructed pneumatic instruments. |
Fisher® L2 and L2sj rugged liquid level controllers use a displacer type sensor to detect liquid level or the interface of two liquids of different specific gravities. |
Fisher® L3 pneumatic level controller is designed to sense liquid level or interface level in a vessel, and produce a standard pneumatic output signal proportional to the process variable. |
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Pneumatic Pressure Controllers
Once again Emerson Process Management reinforces its long-standing commitment to technological excellence with a complete line of pressure controllers. Simplicity…ruggedness…reliability - these are the qualities that have made Fisher® products the industry standard in pressure control. These controllers bring you economical and accurate control whether the process variable is differential pressure (at either low or high static pressures) or gauge pressure. Their simple, yet rugged construction pays off in long, reliable service under difficult operating conditions.
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Fisher® Differential Pressure |
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Fisher® Energy Responsible Controller |
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Fisher® Gauge Pressure |
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Differential pressure controllers use either a bellows or a capsular element for sensing two different pressures. The difference between these pressures is then compared to an operator-adjusted set point. |
Fisher® products compare sensed process or differential pressure and send a pneumatic signal to an adjacent control element that maintains the process pressure at or near the set point value. |
Gauge pressure controllers measure the difference between the absolute pressure and the local atmospheric pressure. |
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Fisher® High-Low Pilot |
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The Fisher® high-low pressure pilot product offering maintains full output when the process is within the set point range. If the process moves outside of this range, the pilot switches to zero output. |
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Pneumatic Temperature Controllers
Pneumatic temperature controllers compare process temperature with an operator- adjusted set point. The controller delivers a pneumatic signal to a control element. The control element changes the process temperature toward the set point. Controller types are available for proportional-only, proportional-plus-reset, proportional-plus-reset-plus- rate, and differential gap for on-off control.
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Fisher® 4196 |
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4196 temperature indicating controllers, used in industries requiring accurate process monitoring and temperature control, show process temperature and set point on an easy-to-read process scale. |
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Valve Accessories
Emerson Process Management manufactures a broad range of accessories for use with control valves.
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Fisher® Electro-Pneumatic Transducers |
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Fisher® Position Transmitters |
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Fisher® Trip Valve |
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Current-to-pneumatic (I/P) transducers blend an innovative I/P conversion technology with proven pneumatic instrumentation designs. |
Fisher® position transmitters provide true position feedback for monitoring or control uses. |
Fisher pneumatic control products used in applications protecting equipment or operating conditions of final control elements. |
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Fisher® Volume Boosters |
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Fisher® volume booster products are pneumatic devices used for amplifying pneumatic control signals and enhancing control of final control elements with faster movement. |
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