FISHER 4160 PRESSURE CONTROLLER

Professional Product Specification

The Emerson Fisher 4160 Series pneumatic pressure controller is a rugged and reliable process controller designed for precise pneumatic control in industrial pressure, vacuum, and differential pressure applications. Part of the well-known Fisher Wizard™ II controller family, the 4160 controller is widely used in oil & gas, petrochemical, refining, and process industries where dependable pneumatic process control is required.

The Fisher 4160 compares sensed process pressure against an adjustable setpoint and produces a pneumatic output signal to operate control valves, actuators, indicators, or recording devices. The controller is engineered for durability, stable operation, and easy field adjustment in demanding industrial environments.

General Specifications

The 4160 Series uses bellows or Bourdon tube sensing elements to detect process pressure and generate a pneumatic control signal for adjacent control elements.

Key Features

• Accurate pneumatic pressure control

• Rugged industrial Wizard™ II construction

• Direct or reverse acting configuration

• Field-reversible action without additional parts

• Easy proportional band adjustment

• Optional proportional-plus-reset control

• Wide sensing range capability

• Suitable for pressure, vacuum, and differential pressure service

• Reliable operation in harsh industrial environments

• Easy maintenance and calibration access

The controller is designed for long-term dependable service in demanding chemical process, gas, and oil production industries.

Typical Applications

• Pneumatic control valve systems

• Gas pressure control

• Separator pressure control

• Oil & gas production facilities

• Refinery process control

• Chemical process systems

• Vacuum process control

• Differential pressure monitoring

• Industrial pneumatic instrumentation

Operating Principle

The Fisher 4160 pneumatic controller senses process pressure through a Bourdon tube or bellows assembly. The sensed pressure is compared to the operator-adjusted setpoint. The internal pneumatic relay system then modulates the output pneumatic signal to maintain the process variable at the desired setpoint.

As process pressure changes, the flapper-nozzle relay mechanism adjusts output pressure proportionally to operate connected control valves or actuators.

Advantages

• Proven Fisher Wizard™ II reliability

• Stable and sensitive pneumatic control performance

• Flexible mounting and installation options

• Minimal maintenance requirements

• Durable industrial-grade construction

• Suitable for hazardous process environments

• Easy field calibration and adjustment

• Long operational service life

Related Fisher Pneumatic Controllers

The Fisher C1 controller was developed as the next-generation low-consumption successor to the traditional 4150/4160 pneumatic controller platform.