Emerson Fisher 4194 Instruction Manual

www.Fisher.comFisherr 4194HS Differential Pressure IndicatingControllersContentsIntroduction 2...Scope of Manual 2...

Instruction ManualD200157X0124194HS ControllersOctober 201110Figure 5. Location of Controller Parts and AdjustmentsDRIVE ARMLOCKING SCREWPIVOT BRACKET

Instruction ManualD200157X0124194HS ControllersOctober 201111AdjustmentsRemote Set Point (suffix letter M)CAUTIONDo not move the set point adjustment

Instruction ManualD200157X0124194HS ControllersOctober 201112To switch from automatic to manual mode, carefully adjust the loader knob until the metal

Instruction ManualD200157X0124194HS ControllersOctober 201113NoteIf the controller has the auto/manual option, be sure the controller is in the automa

Instruction ManualD200157X0124194HS ControllersOctober 2011145. Adjust the set point pressure to the upper limit of the input span. Note whether the

Instruction ManualD200157X0124194HS ControllersOctober 201115D Locate the 50 percent line on figure 7. Move along this line until you intersect the cu

Instruction ManualD200157X0124194HS ControllersOctober 2011165. Increase the process differential pressure to the desired switching point at which th

Instruction ManualD200157X0124194HS ControllersOctober 201117The set point adjustment changes the proximity of the nozzle and flapper as does a change

Instruction ManualD200157X0124194HS ControllersOctober 201118Before the auto/manual switch is operated, the output of the relay must equal the output

Instruction ManualD200157X0124194HS ControllersOctober 201119Figure 10. Maintenance GuideTroubleshootingIt the controller is not operating properly, r

Instruction ManualD200157X0124194HS ControllersOctober 20112Contents (continued) Proportional Band Knob, Nozzle Pivot, and Set Point Beam Assembly 29.

Instruction ManualD200157X0124194HS ControllersOctober 201120Table 5. Troubleshooting ChartFault Possible Cause Check Correction1. Output does not sna

Instruction ManualD200157X0124194HS ControllersOctober 2011212. Lift the proportional band indicator cover as shown in figure 11.Figure 11. Changing

Instruction ManualD200157X0124194HS ControllersOctober 2011224. To separate the controller and differential pressure unit, open the cover, locate lin

Instruction ManualD200157X0124194HS ControllersOctober 201123NoteSome of the following procedures require that the proportional band knob be adjusted

Instruction ManualD200157X0124194HS ControllersOctober 2011244. Install the replacement relay, making sure the tabs on the relay line up with the tab

Instruction ManualD200157X0124194HS ControllersOctober 2011258. Mount the controller as described in the Installation section.9. Connect the supply,

Instruction ManualD200157X0124194HS ControllersOctober 201126Figure 14. Link LocationsLINK 4LINK 4 ADJUSTMENTLINK 2LINK 2 ADJUSTMENTLINK 3 ADJUSTMENTL

Instruction ManualD200157X0124194HS ControllersOctober 201127Figure 15. Process Pointer AlignmentALIGNEDZERO ADJUSTMENTLOCKING SCREWMISALIGNEDFINE ZER

Instruction ManualD200157X0124194HS ControllersOctober 2011283. Install the replacement link with the screw head toward set point beam assembly as sh

Instruction ManualD200157X0124194HS ControllersOctober 201129Refer to figure 26 for key number locations.1. Remove the nuts that hold the supply gaug

Instruction ManualD200157X0124194HS ControllersOctober 20113Table 2. SpecificationsAvailable ConfigurationsSee table 1Input Signal (Sensing Element Ra

Instruction ManualD200157X0124194HS ControllersOctober 20113019. Inspect the O‐ring on the relay nozzle tubing assembly (key 18) and replace it if ne

Instruction ManualD200157X0124194HS ControllersOctober 201131Figure 18. Proportional Band Knob and Set Point Beam DetailsE‐RING(KEY 27)RETAINING CLIP(

Instruction ManualD200157X0124194HS ControllersOctober 201132Figure 19. Position of Link Number 4 AdjustmentScrewsW4195LINK 4 ADJUSTMENTSCREW HEADSADJ

Instruction ManualD200157X0124194HS ControllersOctober 20113337. If the output pressure snaps to supply pressure below 2 percent of set point, adjust

Instruction ManualD200157X0124194HS ControllersOctober 20113454. Install and tighten the nine mounting screws that hold the controller assembly in pl

Instruction ManualD200157X0124194HS ControllersOctober 20113524. Adjust the proportional band between DIRECT and REVERSE. Do this by aligning the tab

Instruction ManualD200157X0124194HS ControllersOctober 20113640. Determine the position of the set point beam shoe (key 29).D If the position of the

Instruction ManualD200157X0124194HS ControllersOctober 201137Figure 24. Bellows Assembly and Proportional Band Adjustment (Process Scale and Proportio

Instruction ManualD200157X0124194HS ControllersOctober 201138Calibration After Controller MaintenanceProcess Zero‐and‐Span AdjustmentIf the prestartup

Instruction ManualD200157X0124194HS ControllersOctober 201139Figure 25. Leveling ScrewsSIDE VIEW OF CONTROLLER SHOWINGFLAPPER LEVELING SCREWS56A9752‐S

Instruction ManualD200157X0124194HS ControllersOctober 20114Table 2. Specifications (continued)Declaration of SEPFisher Controls International LLC dec

Instruction ManualD200157X0124194HS ControllersOctober 20114011. Carefully adjust the process differential pressure to 100 percent of the process sca

Instruction ManualD200157X0124194HS ControllersOctober 20114110. Increase the remote set point pressure to 50 percent of input span.11. Connect the

Instruction ManualD200157X0124194HS ControllersOctober 2011422. Disconnect the pressure connection (key 93) into the pedestal assembly (key 105) and

Instruction ManualD200157X0124194HS ControllersOctober 2011432. Loosen the screw in the replacement link and adjust the length to match the link bein

Instruction ManualD200157X0124194HS ControllersOctober 201144d. Set pivot A in the middle of the bushing end play.e. Tighten the screws that hold th

Instruction ManualD200157X0124194HS ControllersOctober 201145b. To increase the span further than the adjustment will allow, move both ends of link A

Instruction ManualD200157X0124194HS ControllersOctober 201146DisassemblyRefer to figures 29 and 30 for key number location.1. Loosen the screw (key 3

Instruction ManualD200157X0124194HS ControllersOctober 201147When removing the groove pin, hold onto the switch lever and slowly pull the switch lever

Instruction ManualD200157X0124194HS ControllersOctober 2011486. Reconnect the tubing assembly (key 309).7. Locate the lever spring (key 302) and the

Instruction ManualD200157X0124194HS ControllersOctober 2011495. Attach the tubing assembly (key 309).6. Perform the assembly portion in the replacin

Instruction ManualD200157X0124194HS ControllersOctober 20115Do not install, operate, or maintain a 4194HS differential pressure indicating controller

Instruction ManualD200157X0124194HS ControllersOctober 201150Controller Parts (figure 26)NotePart numbers are shown for recommended spares only. For p

Instruction ManualD200157X0124194HS ControllersOctober 201151Key Description58 Cap screw, hex hd, SST for use w/pressure control block (key 57),  w/re

Instruction ManualD200157X0124194HS ControllersOctober 201152Key Description140 Machine screw, fill hd, 18‐8 SST For 4194HSM and HSME only. Required t

Instruction ManualD200157X0124194HS ControllersOctober 201153Key Description Part Number375 Set pt indicator ass'y, A93003 (aluminum) for control

Instruction ManualD200157X0124194HS ControllersOctober 201154Figure 26. Controller Assembly DrawingsA5948B2357CONTROLLER COMMON PARTSSECTION D-D

Instruction ManualD200157X0124194HS ControllersOctober 201155Figure 26. Controller Assembly Drawings (Continued)B235149A0770‐ASECTION B-BREMOTE SET PO

Instruction ManualD200157X0124194HS ControllersOctober 201156Figure 27. Remote Set Point Assembly36A6988‐CAPPLY LUB/SEALANT

Instruction ManualD200157X0124194HS ControllersOctober 201157Figure 28. Auto/Manual Station48A2905‐A Sht 248A2905‐A Sh1 1APPLY LUB/SEALANTTOP VIEWRIGH

Instruction ManualD200157X0124194HS ControllersOctober 201158Figure 28. Auto/Manual Station (Continued)56A9752‐D Sht 4C0527-2METAL BALL PLASTIC TUBELO

Instruction ManualD200157X0124194HS ControllersOctober 201159Figure 29. Process and Set Point Indicator Assembly with Differential Pressure Unit38A498

Instruction ManualD200157X0124194HS ControllersOctober 20116Pipestand MountingA 4194HS controller mounts on a pipestand and must be installed with the

Instruction ManualD200157X0124194HS ControllersOctober 201160Figure 30. Process and Set Point Indicator Assembly (Manual Set Point)39A1126‐HEmerson Pr

Instruction ManualD200157X0124194HS ControllersOctober 20117Figure 3. Connections18A5903‐BA3000-11/4 NPT REMOTE SET POINT CONNECTIONREMOTE SET POINTCO

Instruction ManualD200157X0124194HS ControllersOctober 20118Figure 4. Simplified Control Loop DiagramW5910HIGH PRESSURE CONNECTIONSLOWPRESSURECONNECTI

Instruction ManualD200157X0124194HS ControllersOctober 20119If a remote vent is not required, the vent opening (figure 3) must be protected against th