Emerson Fisher 4194 Instruction Manual

2015-03-30

• Contents
• Section 1 Introduction1
  • Scope of Manual
  • Description
  • Specifications
  • Educational Services
• Section 2 Installation22‐2‐
  • Actuator Mounting
  • Panel Mounting
  • Wall Mounting
  • Pipestand Mounting
  • Pressure Connections
  • Process Pressure
  • Supply Pressure
  • Vent
• Section 3 Controller Operation33‐3‐
  • Operating Information
    • Adjustments
      • Manual Set Point
      • Remote Set Point (Option M)
      • Proportional Band (Differential Gap)
      • Changing Controller Action
      • Auto/Manual Switching (Option E)
    • Prestartup Checks
    • Startup
  • Calibration
    • Process Zero and Span Adjustment
    • Remote Set Point Zero and Span Adjustment (Option M)
    • Setting Switching Points
      • Direct‐Acting Controllers
      • Reverse‐Acting Controllers
  • Principle of Operation
    • Overall Operation
    • Remote Set Point Option
    • Auto/Manual Option
• Section 4 Maintenance44‐4‐
  • Troubleshooting
  • Changing Controller Action
  • Replacing Common Controller Parts
    • Process Pressure Scale
    • Relay
    • Case and Cover
    • Gauges
    • Pressure Control Block
    • Supply Tubing and Positive Feedback Tubing Assemblies
    • Proportional Band Knob, Nozzle Pivot, and Set Point Beam Assembly
    • Flapper Flexure Pivot Assembly
    • Positive Feedback Bellows
    • Links
      • Link Number 1
      • Link Number 2
      • Link Number 3
      • Link Number 4
      • Link Number 5
    • Long Pivot Assembly
    • Short Pivot Assembly
    • Process Drive Flexure
    • Process Tubing
    • Capsular Element Assembly
  • Maintenance Calibration
    • Precalibration Procedures
    • Aligning the Drive Bracket Assembly
    • Setting the Travel Stops
    • Aligning the Linkage
    • Process Zero‐and‐Span Adjustment
    • Linearity Adjustment
  • Flapper Alignment
  • Remote Set Point (Option M)
    • Replacing Parts
      • Pivot Assembly A (Key 114)
      • Pivot Assembly B (Key 115)
      • Drive Flexure
      • Tubing
      • Remote Set Point Capsular Element Assembly
      • Link A
      • Link B
    • Maintenance Calibration
      • Precalibration Procedure
      • Setting the Travel Stops
      • Aligning the Linkage
      • Zero and Span Adjustment
      • Linearity Adjustment
  • Auto/Manual (Option E)
    • Replacing the Auto/Manual Station
    • Replacing the Switch Body Assembly, Lever O‐Ring, Switch Body O‐Ring, and the Tubing Assembly
    • Replacing the Loader Range Spring, Diaphragm Assembly, Ball Seat, Tubing, and Ball
    • Replacing the Loader Valve Plug and Valve Plug Spring
• Section 5 Parts Ordering5
• Parts Kits
• Parts List5‐
  • General Controller Parts and Bourdon Tubes (figure 5‐1)
  • Mounting Parts