Emerson Fisher 846- User Manual

Emerson Fisher 846

Emerson Fisher 846– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – Instruction Manual; Section 1 Introduction; Scope of Manual; To avoid personal injury or property; Description; WARNING; Specifications for the 846 transducer are listed in table 1-1.
  • Page 3 – Maximum particle density size:
  • Page 4 – Emerson Process Management sales
  • Page 5 – Declaration of SEP; may; Table 1-2. EMC Immunity Performance Criteria; Related Documents; Emerson Process Management sales office
  • Page 6 – Figure 1-2. Transducer Modular Construction; Educational Services
  • Page 7 – Section 2 Installation
  • Page 8 – No special conditions for safe use.; Special Conditions of Use
  • Page 9 – Special Conditions for Safe Use
  • Page 10 – The cable entry device used shall be certified Ex d IIB or Ex d IIC.
  • Page 11 – Mounting; Pressure Connections
  • Page 16 – Figure 2-4. Typical Transducer Dimensions with Gauges
  • Page 17 – Electrical Connections
  • Page 18 – Venting Ports; Stroke Port; Upon loss of input current, or if input current decreases below 3.3
  • Page 19 – Section 3 Calibration
  • Page 20 – Figure 3-1. Connecting a Current or Voltage Source for Calibration; CAUTION
  • Page 21 – Standard Performance: Full Range Input, Direct Action; Multirange Performance: Full Range Input,
  • Page 22 – Standard Performance: Split Range Input, Direct Action; to 12 mA Input Signal; Repeat steps 2 and 3 to verify and complete the calibration.; unit may not turn down this low if it does not, go to step 7.
  • Page 23 – Repeat steps 4 and 5 to verify and complete the calibration.; Standard Performance: Full Range Input, Reverse Action; except for step 2. In place; Multirange Performance: Full Range Input, Reverse Action
  • Page 24 – Standard Performance: Split Range Input, Reverse Action; unit may not turn up this high if it does not, go to step 7.
  • Page 25 – Transporting the Module Final Assembly
  • Page 26 – Section 4 Principle of Operation; Figure 4-1. Functional Parts Block Diagram; Electronic Circuit
  • Page 27 – Magnetic Actuator
  • Page 28 – Booster Stage
  • Page 29 – Section 5 Troubleshooting; Diagnostic Features; Using a Frequency Counter to Read the RPR Signal
  • Page 30 – ) Find frequencies at zero and span pressure.; In‐service Troubleshooting
  • Page 31 – Figure 5-2. Field Troubleshooting Flowchart
  • Page 32 – confirm that proper input current is supplied to the transducer.; for an exploded view.
  • Page 33 – Troubleshooting in the Shop; in the Maintenance section for complete; gently
  • Page 35 – Section 6 Maintenance; Module Final Assembly
  • Page 39 – the O‐rings to ensure that they are not twisted or stretched.
  • Page 40 – Electronic Circuit Board; Figure 6-4. Circuit Board Jumper Positions; Optional Remote Pressure Reading (RPR) Jumper
  • Page 41 – Range Jumper; Removing the Electronic Circuit Board
  • Page 42 – centered and in contact with the manifold, as shown in figure 6-5.; Pilot/Actuator Assembly
  • Page 43 – Insert the wire into each nozzle
  • Page 44 – Replacing the Pilot/Actuator Assembly; or red for pilot/actuators inserted into a reverse action unit.; Module Subassembly; Terminal Compartment
  • Page 45 – Figure 6-8. Terminal Compartment Exploded View; Exhaust and Stroke Port Screens
  • Page 46 – Section 7 Parts; Parts Kit; Parts List
  • Page 50 – Section 8 Installation Drawings
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Fisher

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846 Current-to-Pressure Transducer

Contents

1. Introduction

Scope of Manual

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Related Documents

5

. . . . . . . . . . . . . . . . . . . . . . . . . .

Educational Services

6

. . . . . . . . . . . . . . . . . . . . . . . . .

2. Installation

Hazardous Area Classifications and Special

Instructions for Safe‐Use and Installation
in Hazardous Locations

7

. . . . . . . . . . . . . . . . . . . . .

CSA

8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FM

8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ATEX

9

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IECEx

10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ATEX/IECEx

10

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting

11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pressure Connections

11

. . . . . . . . . . . . . . . . . . . . . . .

Supply Pressure

13

. . . . . . . . . . . . . . . . . . . . . . . . .

Output Pressure

17

. . . . . . . . . . . . . . . . . . . . . . . .

Electrical Connections

17

. . . . . . . . . . . . . . . . . . . . . . .

Venting Ports

18

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Signal Interruption

18

. . . . . . . . . . . . . . . . . . . . . . . . . .

3. Calibration

Standard Performance:

Full Range Input, Direct Action

21

. . . . . . . . . . . . .

Multirange Performance:

Full Range Input, Direct Action

21

. . . . . . . . . . . . .

Standard Performance:

Split Range Input, Direct Action

22

. . . . . . . . . . . . .

4 to 12 mA Input Signal

22

. . . . . . . . . . . . . . . . . .

12 to 20 mA Input Signal

22

. . . . . . . . . . . . . . . . .

Standard Performance:

Full Range Input, Reverse Action

23

. . . . . . . . . . . .

Multirange Performance:

Full Range Input, Reverse Action

23

. . . . . . . . . . . .

Standard Performance:

Split Range Input, Reverse Action

24

. . . . . . . . . . .

4 to 12 mA Input Signal

24

. . . . . . . . . . . . . . . . . .

12 to 20 mA Input Signal

24

. . . . . . . . . . . . . . . . .

Transporting the Module Final Assembly

25

. . . . . . .

4. Principle of Operation

Electronic Circuit

26

. . . . . . . . . . . . . . . . . . . . . . . . . . .

Magnetic Actuator

27

. . . . . . . . . . . . . . . . . . . . . . . . . .

Pilot Stage

27

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Booster Stage

28

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 1-1. Fisher 846 Current‐to‐Pressure
Transducer

X0234

5. Troubleshooting

Diagnostic Features

29

. . . . . . . . . . . . . . . . . . . . . . . . .

Stroke Port

29

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Pressure Reading (RPR)

29

. . . . . . . . . . .

Using a Frequency Counter to read the

RPR Signal

29

. . . . . . . . . . . . . . . . . . . . . . . . .

In‐service Troubleshooting

30

. . . . . . . . . . . . . . . . . . .

Troubleshooting in the Shop

33

. . . . . . . . . . . . . . . . .

6. Maintenance

Module Final Assembly

35

. . . . . . . . . . . . . . . . . . . . . .

Removing the Module Final Assembly

38

. . . . . .

Replacing the Module Final Assembly

39

. . . . . . .

Electronic Circuit Board

40

. . . . . . . . . . . . . . . . . . . . . .

Remote Pressure Reading (RPR) Jumper

40

. . . . .

Range Jumper

41

. . . . . . . . . . . . . . . . . . . . . . . . . .

Action

41

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the Electronic Circuit Board

41

. . . . . .

Replacing the Electronic Circuit Board

42

. . . . . .

Pilot/Actuator Assembly

42

. . . . . . . . . . . . . . . . . . . . .

Action

42

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the Pilot/Actuator Assembly

43

. . . . .

Replacing the Pilot/Actuator Assembly

44

. . . . .

Module Subassembly

44

. . . . . . . . . . . . . . . . . . . . . . . .

Terminal Compartment

44

. . . . . . . . . . . . . . . . . . . . .

Exhaust and Stroke Port Screens

45

. . . . . . . . . . . . . .

7. Parts 46

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8. Installation Drawings

50

. . . . . . . . . . . . . . . . . . . . . .

Instruction Manual

D102005X012

846 Transducer

March 2015

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Summary

Page 2 - Instruction Manual; Section 1 Introduction; Scope of Manual; To avoid personal injury or property; Description; WARNING; Specifications for the 846 transducer are listed in table 1-1.

Instruction Manual D102005X012 846 Transducer March 2015 2 Section 1 Introduction Scope of Manual This instruction manual provides installation, operating, calibration, maintenance, and parts ordering informationFisher 846 current‐to‐pressure transducers. Refer to separate manuals for instructions c...

Page 3 - Maximum particle density size:

Instruction Manual D102005X012 846 Transducer March 2015 3 Table 1-1. Specifications Input Signal Standard Performance: 4 to 20 mA DC, 4 to 12 mA DC, or 12 to 20 mA DC.Field adjustable split ranging. Multirange Performance: 4 to 20 mA DC. Consult factory for split range input. Equivalent Circuit See...

Page 4 - Emerson Process Management sales

Instruction Manual D102005X012 846 Transducer March 2015 4 Table 1-1. Specifications (continued) Performance (continued) (5) Electromagnetic Interference (EMI): Tested per IEC 61326‐1 (Edition 1.1). Meets emission levels for ClassA equipment (industrial locations) and Class Bequipment (domestic loca...

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