4190 Series

4190 Series Controller


Fisher 4194 differential pressure indicating controllers show process differential pressure and set point on an easy-to-read process scale. The controllers sense two different pressures and compare the difference between these pressures with an operator-adjusted set point. They are available for proportional only, proportional-plus-reset, and differential gap control. The controller is also available with anti-reset windup, internal auto/manual station, and remote set point adjustability. 4194 controllers are used in industries where process monitoring and accurate measurement of differential pressures are required.

Features

  • Simple design of the controller allows fast, easy maintenance and minimal spare parts inventory.
  • Adjusting the set point and the zero and span of the process pointer and switching between direct and reverse action are accomplished quickly and without special tools.
  • Simple design and low mass of internal parts allow the controller to withstand vibration encountered in most plant environments.
  • Relay and nozzle design reduces steady-state air consumption to as low as 0.09 normal m3/hr (5 scfh).
  • Tough plastic housing resists corrosive environments. Internal constructions are available to resist a corrosive supply pressure media.
  • The controller can mount directly on the actuator or it can mount on a pipestand, on a wall, or in a panel.
  • Two red pointers on a 114 mm (4 1/2 in) long white-on-black scale show differential pressure and deviation from set point at a glance. Two other gauges monitor supply and output pressures.
     

Fisher 4195K gauge pressure indicating controllers show process pressure and set point on an easy-to-read process scale. The controllers compare process pressure with an operator-adjusted set point and deliver a pneumatic signal to a control element so that process pressure changes toward the set point. Controller types are available for proportional only, proportional-plus-reset, and differential gap for on/off control. 4195K controllers are used in industries where accurate pressure control and process monitoring are required.

Features

  • Adjusting the set point, the zero and span of the process pointer, and switching between direct and reverse action are accomplished quickly and without special tools.
  • A 4195K series controller can be mounted directly on the actuator or it can mount on a pipestand, wall, or in a panel.
  • The simple design and low mass of internal parts allow a 4195K series controller to withstand the vibration levels encountered in most plant environments.
  • The relay and nozzle design reduces steady-state air consumption to as low as 0.09 m3/hr (3.5 scfh); less than the 6 scfh requirements set for the oil and gas industry by the US Environmental Protection Agency (New Source Performance Standards Subpart OOOO, EPA-HQ-QAR-2010-0505).
  • Tough, plastic housing resists such corrosive environments as chemical plants and the salt spray atmosphere on an offshore oil platform.
     

4194
4194H
4195K
 Bulletin
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 Instruction Manual
 Instruction Manual
 Instruction Manual