Emerson FISHER 546 Instruction Manual
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Emerson FISHER 546 Instruction Manual

Emerson FISHER 546 Instruction Manual

Electro-pneumatic transducer
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Instruction Manual
D200108X012
Fisher
546 Electro-Pneumatic Transducer
™
(Inactive Product)
Contents
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Instructions
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Maintenance Schedules
Parts Ordering
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Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Latest Published Instruction Manual
Introduction
The product covered in this document has been inactive since February 2018. This document, which includes the
latest published version of the instruction manual, is made available to provide updates of newer safety procedures. Be
sure to follow the safety procedures in this supplement as well as the specific instructions in the included instruction
manual.
Part numbers in the included instruction manual should not be relied on to order replacement parts. For replacement
parts, contact your
Emerson sales
For more than 20 years, Fisher products have been manufactured with asbestos‐free components. The included
manual might mention asbestos containing parts. Since 1988, any gasket or packing which may have contained some
asbestos, has been replaced by a suitable non‐asbestos material. Replacement parts in other materials are available
from your sales office.
Safety Instructions
Please read these safety warnings, cautions, and instructions carefully before using the product.
These instructions cannot cover every installation and situation. Do not install, operate, or maintain this product
without being fully trained and qualified in valve, actuator and accessory installation, operation and maintenance. To
avoid personal injury or property damage it is important to carefully read, understand, and follow all of the contents of
this manual, including all safety cautions and warnings. If you have any questions about these instructions, contact
your Emerson sales office before proceeding.
www.Fisher.com
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546 Transducer
December 2018

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Summary of Contents for Emerson FISHER 546

  • Page 1 If you have any questions about these instructions, contact your Emerson sales office before proceeding. www.Fisher.com...

  • Page 2: Specifications

    WARNING Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Automation Solutions should not, under any circumstances, be used in any Fisher product, because they may void your warranty, might adversely affect the performance of the product, and could cause personal injury and property damage.

  • Page 3: Installation

    To avoid possible personal injury and because some valve/trim material combinations are limited in their pressure drop and temperature ranges, do not apply any other conditions to the valve without first contacting your Emerson sales office. CAUTION D When ordered, the valve configuration and construction materials are generally selected to meet particular pressure,...

  • Page 4: Maintenance

    Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user. Fisher is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co.

  • Page 5: Table Of Contents

    Introduction Scope of Manual This instruction manual provides installation, operation, maintenance, and parts ordering information for Fisher 546 transducers and the 82 relay. Refer to separate manuals for instructions covering equipment used with the transducer. Do not install, operate or maintain a 546 transducer without being fully trained and qualified in valve, actuator and accessory installation, operation and maintenance.
  • Page 6 Instruction Manual 546 Transducer December 2018 D200108X012 Table 1. Specifications Available Configurations Performance Actuator Loading Time: See figure 7 Electro‐pneumatic signal transducer with Reference Accuracy: ±0.75% of output signal span explosion‐proof case and cover Independent Linearity: ±0.50% of output signal span Open Loop Gain: 26 The 546 can be ordered with or without a Fisher 67 Frequency Response: Gain is attenuated 3 dB at 20 Hz...

  • Page 7: Description

    Instruction Manual 546 Transducer D200108X012 December 2018 Table 1. Specifications (continued) Approximate Weight 2014/68/EU. It was designed and manufactured in accordance with Sound Engineering Practice (SEP) 4.1 kg (9 pounds) and cannot bear the CE marking related to PED compliance. Declaration of SEP However, the product may bear the CE marking to Fisher Controls International LLC declares this...

  • Page 8: Specifications

    546 Transducer December 2018 D200108X012 Figure 2. FM and CSA Approvals Nameplate for Fisher 546 WARNING The 546 transducer does not meet third party approvals (CSA or FM) for use with natural gas as the supply medium. Use of natural gas as the supply medium can damage the instrument and result in personal injury or property damage from fire or explosion.

  • Page 9: Installation

    40 micrometers in diameter will suffice in most applications, check with an Emerson Automation Solutions field office and industry instrument air quality standards for use with corrosive air or if you are unsure about the proper amount or method of air filtration or filter maintenance.

  • Page 10: Diagnostic Connections

    Instruction Manual 546 Transducer December 2018 D200108X012 2. Run 9.5 mm (3/8‐inch) outside diameter tubing from the 1/4 NPT OUTPUT connection on the transducer case to the input connection on the pneumatic actuator or valve positioner. This connection is made at the factory if the unit is shipped mounted on an actuator as shown in figure 1.
  • Page 11 Instruction Manual 546 Transducer D200108X012 December 2018 Wiring connections must be in accordance with local, regional, and national codes for any given hazardous are approval. Failure to follow the local, regional, and national codes could result in personal injury or property damage from fire or explosion.

  • Page 12: Operating Information

    Instruction Manual 546 Transducer December 2018 D200108X012 Operating Information WARNING Personal injury or property damage may result from fire or explosion if power is applied to the transducer with the cover removed in a hazardous area. If the transducer is installed in an application where explosion‐proof classification is required, perform the following steps (prior to removal of the transducer cover) when any procedure in this section requires removal of the cover: D Disconnect the electrical signal from the transducer.

  • Page 13: Calibration

    Instruction Manual 546 Transducer D200108X012 December 2018 Calibration Equipment Required Choose a current or voltage source that is capable, without switching ranges, of driving the transducer through its entire input range. Switching ranges on a current or voltage source will produce spikes or mid‐scale reverses in the input signal presented to the transducer, causing errors.

  • Page 14: Recalibration

    If the transducer remains outside of accuracy specifications after altering the calibration end points as much as possible consult your Emerson Automation Solutions sales office. For transducers inaccurate to less than 5 percent of output span, relay repair or replacement may correct the problem.

  • Page 15: Changing Output Pressure Range

    Maintenance section. Note Re‐magnetization of the torque motor is required when changing the output pressure range. Contact your Emerson sales office service center. Reversing the Action Reversing the action of a 546 transducer requires no special parts. The direction of armature rotation is dependent upon the direction of the current flow.
  • Page 16 Instruction Manual 546 Transducer December 2018 D200108X012 resulting in a torque that rotates the armature about the fixed torsion rod to cover the nozzle. The resulting restriction produces an increased pressure in the nozzle, in the upper chamber of the relay, and in the feedback bellows. The relay responds to the increase in nozzle pressure by increasing the output pressure to the actuator and control valve.
  • Page 17 Instruction Manual 546 Transducer D200108X012 December 2018 Figure 6. Transducer Schematic SPAN ADJUSTMENT FEEDBACK (MAGNETIC SHUNT) BELLOWS ZERO ADJUSTMENT PERMANENT MAGNET POLE PIECES ARMATURE COIL NOZZLE OUTPUT PRESSURE ARMATURE NOZZLE PRESSURE TORSION ROD SUPPLY PRESSURE EXHAUST EXHAUST PRESSURE OUTPUT CENTER SPACER ASSEMBLY FIXED RELAY RESTRICTION...

  • Page 18: Maintenance

    CAUTION The presence of Emerson Automation Solutions personnel and also approval agency personnel may be required if you service (other than normal, routine maintenance, such as calibration) or replace components on a transducer that carries a third‐party approval.

  • Page 19: Relay Removal And Replacement

    Troubleshooting This section contains some checks for operational difficulties that may be encountered. If correcting the difficulties is not possible, contact your Emerson sales office or service center. Electrical 1. Check the output of the control device. Make sure that it is reaching the transducer.

  • Page 20: Alignment

    7. Make final adjustment of the span with the span adjustment screw. Torque Motor Frame The top pole piece plate (key 50, figure 9) of the torque motor can become twisted with respect to the bottom pole piece plate (key 51, figure 9). If this happens contact your Emerson sales office.

  • Page 21: Armature Travel Stop

    Instruction Manual 546 Transducer D200108X012 December 2018 Armature Travel Stop The armature travel stop (key 52, figure 9) must be in place to prevent overstressing the armature and coil support (key 41, figure 9) due to over‐travel. The clearance between the armature and travel stop should be 0.13 mm (0.005 inches).

  • Page 22: Parts Ordering

    Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Automation Solutions should not, under any circumstances, be used in any Fisher instrument. The use of components not manufactured by Emerson Automation Solutions may void your warranty, might adversely affect the performance of the instrument, and could result in personal injury or property damage.

  • Page 23: Parts List

    546 Transducer D200108X012 December 2018 Parts List 546 Transducers (figure 8) Repair Kits Note Contact your Emerson sales office for Part Ordering information. Description Part Number Transducer Repair Kit Kit includes keys 6, 12, 36, 37, and 58 R546X000022 Description   1...

  • Page 24: Torque Motor

    Instruction Manual 546 Transducer D200108X012 December 2018 Figure 9. Torque Motor Assembly APPLY LUBRICANT/SEALANT NOTES: 1. SHADED KEY NUMBERS INDICATE PARTS THAT SHOULD NOT BE DISASSEMBLED FROM TORQUE MOTOR. 2. KEY NUMBERS 22 AND 103 ARE NOT SHOWN. 30A8594‐K B1767‐3 Description Description Torque Motor (figure 9)
  • Page 25 Instruction Manual 546 Transducer D200108X012 December 2018 Figure 10. Fisher 82 Relay Assembly RESTRICTION HOLES APPLY LUBRICANT/SEALANT NOTE: KEY 76 IS NOT SHOWN A1504‐1 / IL Description Description  29 O‐Ring  57* Bellows Ass'y  31 Hex Nut  58 Tubing Ass'y  32 Washer  94 Anti‐seize sealant (not furnished with unit)

  • Page 26: Mounting Parts

     Yoke mounting (4 req'd)   480 all sizes Note   513 all sizes Contact your Emerson sales office for Part Ordering information.   656 size 40 thru 60   657 & 667 size 30 thru 80   1051 size 40 & 60 all positions   1052 sizes 40 thru 70 all positions Description   1061 all sizes all positions...
  • Page 27 Instruction Manual 546 Transducer D200108X012 December 2018 Figure 11. Typical Actuator Mounting Figure 12. Typical Casing Mounting TRANSDUCER 1051/52 SIZE 33 ACTUATOR 42B0737‐A A5426‐1 / IL TRANSDUCER 585 SIZE 25 AND Description 50 ACTUATORS 48A9176‐B  97 U‐Bolt (2 req'd) A5425‐1 / IL  1250R, all sizes  98 Hex Nut...

  • Page 28: Diagnostic Connections

    Fisher and FlowScanner are marks owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.

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