Emerson Fisher 846 Bedienerhandbuch

www.Fisher.comFisherr 846 Current-to-Pressure TransducerContents1. IntroductionScope of Manual 2...Description 2...

Instruction ManualD102005X012846 TransducerMarch 201510IECExSpecial Conditions for Safe UseIntrinsically SafeNo special conditions for safe use.Flamep

Instruction ManualD102005X012846 TransducerMarch 201511Mounting WARNINGThis unit will vent to the atmosphere through the stroke port in the module co

Instruction ManualD102005X012846 TransducerMarch 201512Figure 2-1. Typical Dimensions and Connection Locations (Aluminum Construction Shown)129(5.07)1

Instruction ManualD102005X012846 TransducerMarch 201513Supply Pressure WARNINGSevere personal injury or property damage may occur from process instab

Instruction ManualD102005X012846 TransducerMarch 201514Figure 2-3. Typical Transducer Mounting with Universal Mounting Bracket32(1.25)FOR PROPER MOIST

Instruction ManualD102005X012846 TransducerMarch 201515Figure 2-3. Typical Transducer Mounting with Universal Mounting Bracket (continued)mm(INCH)30(1

Instruction ManualD102005X012846 TransducerMarch 201516Figure 2-4. Typical Transducer Dimensions with GaugesSUPPLY GAGE49(1.92)72(2.83)9(0.36)81(3.2)O

Instruction ManualD102005X012846 TransducerMarch 201517Output PressureConnect the output signal line to the transducer at the output port. The output

Instruction ManualD102005X012846 TransducerMarch 201518Connect the positive signal lead to the positive terminal, marked +. Connect the negative signa

Instruction ManualD102005X012846 TransducerMarch 201519Section 3 Calibration33 WARNINGThe following calibration procedures require taking the transdu

Instruction ManualD102005X012846 TransducerMarch 20152Section 1 IntroductionScope of ManualThis instruction manual provides installation, operating, c

Instruction ManualD102005X012846 TransducerMarch 201520Figure 3-1. Connecting a Current or Voltage Source for CalibrationADJUST THE CURRENTSOURCE TO P

Instruction ManualD102005X012846 TransducerMarch 201521Standard Performance: Full Range Input, Direct Action WARNINGRefer to the WARNING at the begin

Instruction ManualD102005X012846 TransducerMarch 201522Use the following procedure with a multirange performance unit to achieve the desired direct ac

Instruction ManualD102005X012846 TransducerMarch 2015236. Repeat steps 4 and 5 to verify and complete the calibration.7. Turn off the air supply. Re

Instruction ManualD102005X012846 TransducerMarch 2015243. Apply an input of 20.0 mA (Vm = 5.0 V), and adjust the span screw to achieve the desired lo

Instruction ManualD102005X012846 TransducerMarch 2015256. Repeat steps 4 and 5 to verify and complete the calibration.7. If the 12.0 mA (Vm = 3.0 V)

Instruction ManualD102005X012846 TransducerMarch 201526Section 4 Principle of Operation44The following paragraphs describe the functional parts of the

Instruction ManualD102005X012846 TransducerMarch 201527Magnetic Actuator The electronic circuit controls the level of current flowing through the act

Instruction ManualD102005X012846 TransducerMarch 201528Figure 4-3. Detail of Deflector/Nozzle Pilot StageW6287Booster StageThe receiver nozzle pressur

Instruction ManualD102005X012846 TransducerMarch 201529Section 5 Troubleshooting55The modular design and unitized subassemblies of the 846 allows for

Instruction ManualD102005X012846 TransducerMarch 20153Table 1-1. SpecificationsInput SignalStandard Performance:4 to 20 mA DC, 4 to 12 mA DC, or 12 to

Instruction ManualD102005X012846 TransducerMarch 2015301) Find frequencies at zero and span pressure.2) Solve for m, using equation (2).3) Solve for b

Instruction ManualD102005X012846 TransducerMarch 201531Figure 5-2. Field Troubleshooting FlowchartNOTE:AFTER FINAL CORRECTIVE ACTION, CHECK LOOP OPERA

Instruction ManualD102005X012846 TransducerMarch 201532 WARNINGPersonal injury or property damage could result from an uncontrolled process. Unscrewi

Instruction ManualD102005X012846 TransducerMarch 201533Before making the following checks, disconnect both signal wires from the transducer, and ensur

Instruction ManualD102005X012846 TransducerMarch 201534b. Make sure the O‐rings are lightly lubricated with silicone grease and properly seated.c. R

Instruction ManualD102005X012846 TransducerMarch 201535Section 6 Maintenance66This section describes the major components, assembly, and disassembly o

Instruction ManualD102005X012846 TransducerMarch 201536The module final assembly has three separate radial ports. The upper port is for supply air, th

Instruction ManualD102005X012846 TransducerMarch 201537Figure 6-1. Fisher 846 Exploded ViewELECTRONIC CIRCUIT BOARD SCREWSELECTRONIC CIRCUIT BOARDMODU

Instruction ManualD102005X012846 TransducerMarch 201538Removing the Module Final AssemblyThe module final assembly is attached to the module cover. Re

Instruction ManualD102005X012846 TransducerMarch 2015393. Remove the module final assembly from the module cover. To accomplish this, hold the cover

Instruction ManualD102005X012846 TransducerMarch 20154Table 1-1. Specifications (continued)Performance (continued)(5)Electromagnetic Interference (EMI

Instruction ManualD102005X012846 TransducerMarch 2015409. Hand tighten the module cover as much as possible. Use a wrench or long screwdriver shaft t

Instruction ManualD102005X012846 TransducerMarch 201541that can be received by a frequency counter. Operation of the RPR feature is jumper‐selectable,

Instruction ManualD102005X012846 TransducerMarch 201542the O‐ring sizes. The pressure sensor may be gently bent away from the pressure sensor manifold

Instruction ManualD102005X012846 TransducerMarch 201543Figure 6-6. Pilot/Actuator Assembly (Bottom View)ALIGNMENTKEYRUBBERDIAPHRAGMMOUNTINGSCREWSA6654

Instruction ManualD102005X012846 TransducerMarch 201544Figure 6-7. Cleaning the NozzlesA6655‐1DEFLECTOR BARWIREWIREPLASTIC HOUSINGReplacing the Pilot/

Instruction ManualD102005X012846 TransducerMarch 201545The terminal compartment contains the terminal block, terminal block connection board, span and

Instruction ManualD102005X012846 TransducerMarch 201546Section 7 Parts 77Whenever corresponding with your Emerson Process Management sales office abou

Instruction ManualD102005X012846 TransducerMarch 201547Table 7‐1. Parts List (continued)Key No. Description Spares Category(6)1* Terminal Compartment

Instruction ManualD102005X012846 TransducerMarch 201548Figure 7-3. Exploded Parts Drawing (also see table 7-2)B2467NOTE: 1 THREE O‐RINGS ARE REQU

Instruction ManualD102005X012846 TransducerMarch 201549Figure 7-3. Exploded Parts Drawing (also see table 7-2) (continued)B2468

Instruction ManualD102005X012846 TransducerMarch 20155Table 1-1. Specifications (continued)Declaration of SEPFisher Controls International LLC declare

Instruction ManualD102005X012846 TransducerMarch 201550Section 8 Installation Drawings8This section includes installation drawings required for wiring

Instruction ManualD102005X012846 TransducerMarch 201551Figure 8-2. FM Installation Drawing GE59147GE59147

Instruction ManualD102005X012846 TransducerMarch 201552Emerson Process Management Marshalltown, Iowa 50158 USASorocaba, 18087 BrazilChatham, Kent ME4

Instruction ManualD102005X012846 TransducerMarch 20156Figure 1-2. Transducer Modular ConstructionA6643MODULE COVERMODULE FINALASSEMBLYELECTRONICCIRCUI

Instruction ManualD102005X012846 TransducerMarch 20157Section 2 Installation22 WARNINGTo avoid personal injury or property damage from the sudden rel

Instruction ManualD102005X012846 TransducerMarch 20158 WARNINGFailure to follow these conditions of safe‐use could result in personal injury or prope

Instruction ManualD102005X012846 TransducerMarch 20159ATEXSpecial Conditions for Safe UseIntrinsically SafeThis equipment is intrinsically safe and ca