Emerson Fisher 646 Manuel d'instructions

www.Fisher.comFisherr 646 Electro‐Pneumatic TransducerContentsIntroduction 1...Scope of Manual 1...

Instruction ManualD101351X012646 TransducerJanuary 201510Connect the nearest suitable supply source to the 1/4 NPT IN connection on the filter regulat

Instruction ManualD101351X012646 TransducerJanuary 201511For explosion‐proof Class 1, Division 1 applications using metal conduit, install a conduit s

Instruction ManualD101351X012646 TransducerJanuary 201512Figure 7. Zero and Span Adjustments and Terminal Block Connections (Cap Removed)PRINTEDWIRING

Instruction ManualD101351X012646 TransducerJanuary 201513Refer to figure 7 for adjustment locations.1. If a current source other than the control dev

Instruction ManualD101351X012646 TransducerJanuary 201514MaintenanceThe normal mode of operation for the 646 transducer requires that the pneumatic ou

Instruction ManualD101351X012646 TransducerJanuary 201515Electrical1. Ensure terminal lug connections from the control device to the transducer are o

Instruction ManualD101351X012646 TransducerJanuary 201516Relay MaintenanceRefer to figure 10 for key number locations.Removal1. Remove the four mount

Instruction ManualD101351X012646 TransducerJanuary 2015172. Insert the assembled valve plug, inner valve spring, and body plug into the relay body (k

Instruction ManualD101351X012646 TransducerJanuary 201518Parts OrderingA serial number is assigned to each transducer and stamped on the nameplate. Al

Instruction ManualD101351X012646 TransducerJanuary 201519Figure 10. Fisher 646 Transducer AssemblyCONVERTERMODULENOTE:KEY NUMBER 49 IS NOT SHOWN

Instruction ManualD101351X012646 TransducerJanuary 20152Table 1. SpecificationsInput Signal4-20 mA DC, constant current with 30 VDC maximumcompliance

Instruction ManualD101351X012646 TransducerJanuary 201520Diagnostic ConnectionsNotePart numbers are shown for recommended spares only. For partnumbers

Instruction ManualD101351X012646 TransducerJanuary 201521Figure 11. Typical Fisher 646 Mounting With 67CFR Filter Regulator38b3958‐AB2381‐2 / ILNOTES:

Instruction ManualD101351X012646 TransducerJanuary 201522Loop SchematicsFigure 12. CSA Loop Schematic (Installation Drawing GE28591)GE28591E1088NOTES:

Instruction ManualD101351X012646 TransducerJanuary 201523Figure 13. FM Loop Schematic (Installation Drawing GE28590)NOTES:1. THE INSTALLATION MUST BE

Instruction ManualD101351X012646 TransducerJanuary 201524Emerson Process Management Marshalltown, Iowa 50158 USASorocaba, 18087 BrazilChatham, Kent ME

Instruction ManualD101351X012646 TransducerJanuary 20153Table 1. Specifications (Continued)Mounting PositionAny position is acceptable for standard pi

Instruction ManualD101351X012646 TransducerJanuary 20154CAUTIONDropping or rough handling of the transducer can cause damage to the converter module r

Instruction ManualD101351X012646 TransducerJanuary 20155Hazardous Area Classifications and Special Instructions for “Safe Use” andInstallation in Haza

Instruction ManualD101351X012646 TransducerJanuary 20156FMIntrinsically Safe, Explosion proof, Type n Non‐incendive, Dust‐Ignition proofNo special con

Instruction ManualD101351X012646 TransducerJanuary 20157D If using a rigid conduit connection, an Ex d certified sealing device such as a conduit seal

Instruction ManualD101351X012646 TransducerJanuary 20158Type n WARNINGDisconnect power before opening.-40_C ≤ Ta ≤ +71_C ; T6 (Ta ≤ +71_C)Refer t

Instruction ManualD101351X012646 TransducerJanuary 20159Figure 3. Dimensions and Connections35(1.38)6.4(.25)127.0(5.00)72.8(2.86)102.1(4.02)152.4(6.00