Fisher 546 Instruction Manual
  1. Manuals
  2. Brands
  3. Fisher Manuals
  4. Transducer
  5. 546
  6. Instruction manual

Fisher 546 Instruction Manual

Electro-pneumatic transducers
Hide thumbs Also See for 546:
Table of Contents

Advertisement

Quick Links

See also: Instruction Manual
Instruction Manual
Form 1783
December 1997
Type 546, 546S, and 546NS Electro-Pneumatic
Transducers
Contents
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
. . . .
. . . . . . . . . . . . . . . . .
. . . .
Type 546, 546S, and 546NS
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
2
2
2
4
4
4

Introduction

5
6
6

Scope of Manual

6
6
This instruction manual provides installation, opera-
7
tion, maintenance, and parts ordering information for
7
the Type 546, 546S, and 546NS transducers and
7
Type 82 relay. Refer to separate manuals for instruc-
7
tions covering equipment used with the transducer.
Only personnel qualified through training or experience
8
should install, operate, and maintain this transducer. If
there are any questions concerning these instructions,
contact your Fisher Controls sales office or sales rep-
9
resentative before proceeding.
9
9
10

Description

10
The Type 546 or 546NS transducer (figure 1) receives
10
11
either a voltage (Vdc) or a current (mAdc) input signal
11
and transmits a proportional pneumatic output pres-
11
sure to a final control element. The Type 546S trans-
11
ducer receives a current (mAdc) input signal and
11
transmits a proportional pneumatic output pressure. A
12
typical application is in electronic control loops where
the final control element, generally a control valve, is
pneumatically operated. The input signal, output pres-
12
sure range, and electrical classification, if approved, of
each transducer is indicated on the nameplate at-
12
tached to the cover (figure 2).
. . . . . . . . . . . . . . . . . .
. . . . . . .
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
13
13
14
15
15
17
17
19

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 546 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Fisher 546

Summary of Contents for Fisher 546

  • Page 1: Table Of Contents

    ....... . . The Type 546 or 546NS transducer (figure 1) receives Span Adjustment .

  • Page 2: Specifications

    TYPE 546 Specifications Specifications for the Type 546, 546S, and 546NS are listed in table 1. W2115/IL Figure 1. T ype 546 Mounted on a T ype 657 Pneumatic Diaphragm Actuator Installation WARNING If a flammable or hazardous gas is being...
  • Page 3 3. Performance values are obtained using a Type 546 or Type 546S transducer with a 4 to 20 mAdc input signal and a 3 to 15 psig (0.2 to 1 bar) or a 6 to 30 psig (0.4 to 2 bar) output signal.

  • Page 4: Pressure Connections

    Type 546, 546S, and 546NS SUPPLY PIPE NIPPLE (OUTPUT CONN) GAUGE PIPE TEE PIPE BUSHING STEM PROVIDED WHEN GAUGE IS SPECIFIED BODY BODY PROTECTOR 12B8041-B A6072-1 / IL Figure 3. Diagnostic Connections Pressure Connections bushing for the connector. The connector consists of 1/8-inch NPT body and body protector.

  • Page 5: Operating Information

    Type 546, 546S, and 546NS INPUT INPUT INPUT 2500 OHMS 176 OHMS 90 OHMS – – – DC SIGNAL: 1 TO 5 MILLIAMPS DC SIGNAL: 4 TO 20 MILLIAMPS DC SIGNAL: 10 TO 50 MILLIAMPS 450 OHMS 500 OHMS INPUT...

  • Page 6: Adjustments

    9. Record at the other calibration points desired by Note moving upscale to 20.00 mAdc then down scale to The following calibration procedure is 4.00 mAdc, then back upscale to 12.00 mAdc. Refer for a Type 546, 546S, or 546NS transduc- to table 2 for common calibration points.

  • Page 7: Recalibration

    Reversing the Action Reversing the action of a Type 546 or 546NS trans- Recalibration ducer requires no special parts. The direction of arma-...

  • Page 8: Principle Of Operation

    1 to 5 Vdc or 5 to 9 Vdc 1. Temperature compensated circuit. 2. Not appropriate for split range applications because of the high resistance of 1 to 5 mA dc coils. If split range operation is desired, consult your Fisher Controls sales office or sales representative.

  • Page 9: Maintenance

    A3103 / IL parts manufactured or furnished by Fisher Controls International. Figure 7. Output-Time Relationship for T ype 546, 546S, and 546NS T ransducers Figure 9 shows the torque motor and associated parts. Shaded key numbers indicate parts that should not be...

  • Page 10: Pneumatic

    Type 546, 546S, and 546NS 3. Check the resistance of the transducer circuit to 6. Check the nozzle. If it is clogged, remove the entire see that it coincides with the value listed on the circuit torque motor assembly from the case by removing identification tag located on the torque motor.

  • Page 11: Torque Motor Frame

    Drain the process media from both pens, return the transducer to the factory, service cen- sides of the valve. ter, or contact your Fisher Controls sales office or Vent the power actuator loading sales representative. pressure and relieve any actuator spring precompression.

  • Page 12: Replacing The Feedback Bellows Assembly

    Parts List Tighten the mounting screws. 14. With the torque motor installed, apply supply pres- Repair Kits for Type 546, 546S, and sure to the transducer case, and check the relay as- 546NS Transducers sembly for leaks with a soap solution.

  • Page 13: Type 546, 546S, & 546Ns Transducers

    67 SERIES FILTER REGULATOR TYPE 82 RELAY FLAME ARRESTOR FLAME ARRESTOR APPLY LUBRICANT/SEALANT NOTE: KEY 4 NOT WHOWN 30A8595-L Figure 8. T ype 546 T ransducer Assembly B1768-3 / IL Description Part Number Description Part Number Lubricant, Molykote 33 (not furnished with unit) Type 546, 546S, &...

  • Page 14: Type 82 Relay

    E-Ring – – – The following parts are for repairing the Type Armature – – – 546 and 546S relays only. The Type 546NS relay Coil Support – – – Coil Ass’y – – – is not repairable. If the relay is defective, order a...

  • Page 15: Diagnostic Connections

    Type 546, 546S, and 546NS A1504-1 / IL Figure 10. T ype 82 Relay . Description Part Number Machine Screw, steel pl (6 req’d) (not shown) 10B6513X012 Machine Screw, steel pl (2 req’d) 59061140X22 48A9176-B A5425-1 / IL Lubricant, Molykote 33 Figure 1 1.
  • Page 16 Type 546, 546S, and 546NS Description Part Number Cap Screw Casing mounting (2 req’d) Type 1051, 1052, all sizes, all positions 1A582824052 Washer, steel pl Yoke mounting (4 req’d) All types, all sizes, except Type 1250 & 1250R Casing mounting (2 req’d) Pipestand mounting (4 req’d)

  • Page 17: Loop Schematics

    Type 546, 546S, and 546NS Loop Schematics This section includes loop schematics required for wir- ing of intrinsically safe installations. If you have any questions, contact your Fisher Controls sales repre- sentative or sales office. CSA Schematics 29A1594-H Sheet 1 of 2...
  • Page 18 Type 546, 546S, and 546NS CSA Schematics (Continued) 29A1594-H Sheet 2 of 2...

  • Page 19: Fm Schematics

    Type 546, 546S, and 546NS FM Schematics 26A5936-H Sheet 1 of 2...
  • Page 20 Fisher-Rosemount satisfies all obligations coming from legislation to harmonise product requirements in the European Union. Fisher, Fisher-Rosemount, and Managing The Process Better are marks owned by Fisher Controls International, Inc. or Fisher-Rosemount Systems, Inc. All other marks are the property of their respective owners.

This manual is also suitable for:

546s546ns

Table of Contents

Save PDF