4156K and 4166K Temperature Controllers - CEXI

1 And 4166K Temperature ControllersThe 4156K and 4166K Series WizardR IItemperature Controllers (figure 1) provide ruggedand economical solutions to Temperature control inmany applications, particularly in the chemical andoil production industries. These pneumaticinstruments are available for proportional-only,proportional-plus-rese t, and differential gap measure process Temperature with a gas-filledtemperature bulb immersed in the process fluid andcompare this Temperature to an operator-adjustedset point. The controller then delivers a pneumaticsignal to a control element that maintains theprocess Temperature at or near the set Response A nozzle-flapperarrangement and a three-to-one relay allow smallprocess Temperature changes to induce large outputpressure Versatility Install the controller ona panel, wall, or pipestand, as well as on an actuator(as shown in figure 1).

2 The Temperature element isadjustable for desired penetration into the Adjustments Temperature set point,proportional band, and reset are adjustable withlarge, easy-to-read dial-knob Indication of ProcessTemperature A Temperature gauge , calibrated forthe specific measurement range, monitors theprocess Temperature Maintenance Simple design of thecontroller allows fast, easy maintenance andminimum spare parts TEMPERATUREGAUGESPRING-OUT CLEANINGWIREOUTPUTPRESSUREGAUGESET POINTDIALCAPILLARYTUBECONTROLLER YOKE MOUNTEDON ACTUATOR OFCONTROL VALVEINTERIOR OF TYPE 4156K Temperature CONTROLLERW8086 / ILW4277-1 / ILFigure 1. Type 4156K ControllerProduct :4156 KSeptember 20044156K and 4166K Temperature Controllers4156K and 4166K Temperature ControllersProduct :4156 KSeptember 2004 2 SpecificationsAvailable ConfigurationsSee table 1 Input Signal(1)Type: Temperature between 0_C and 500_C or0_F and 1000_F.

3 See table 2 for available rangesMinimum Span(1): 100_C or 100_FMaximum Span(1): 500_C or 1000_FOutput Signal(1)Proportional-Only or Proportional-Plus- to bar (3 to 15 psig) to bar (6 to 30 psig) pneumatic pressuresignalDifferential Gap Controllers :J0 and bar (0 and 20 psig) orJ0 and bar (0 and 35 psig) pneumaticpressure signalAction: Control action is field reversible betweenJdirect (increasing sensed temperatureproduces increasing output signal) and Jreverse(increasing sensed Temperature producesdecreasing output signal). The suffix R is addedto the type number of a construction specified forreverse pressure (3) See table 3 Steady-State Air Consumption(1)See figure 2 Supply and Output inch NPT femaleMaximum Allowable pressure in Closed Vessel(For Temperature Bulb)3/8-inch (10 mm) Temperature Bulb: 69 bar(1000 psig) at 38_C (100_F)9/16-inch (14 mm) Temperature Bulb: bar(500 psig) at 38_C (100_F)Proportional Band(1) AdjustmentFor Proportional-Only orProportional-Plus-Reset ControllersFull output pressure change adjustable overpercent of sensing element Temperature range asfollows:Proportional-Only Controllers :J3% to 100% [ to bar (3 to 15 psig)] orJ6% to 100% [ to bar (6 to 30 psig)]Proportional-Plus-Reset Controllers .

4 J6% to 200% [ to bar (3 to 15 psig)] orJ12% to 200% [ to bar (6 to 30 psig)]Differential Gap AdjustmentFor Differential Gap Controllers : Full outputpressure change adjustable from 15% to 100% ofsensing element Temperature rangeReset(1) AdjustmentFor Proportional-Plus-Reset Controllers :Adjustable from minutes to more than 74minutes per repeat (from 100 repeats per minuteto less than repeats per minute)PerformanceRepeatability(1): of sensing elementtemperature rangeDead Band(1) (Except Differential GapControllers(2)): of output spanTime Constant of Temperature Bulb: 9 to 18seconds (bare bulb in agitated liquid)Ambient Operating Temperature Limits (3) - 40 to 71_C ( - 40 to 160_F)Typical Ambient Temperature OperatingInfluenceProportional Control Only: Output pressurechanges of sensing element range foreach 28_C (50_F) change in ambient temperaturefor a controller set at 100% proportional bandReset Control Only: Output pressure changes of sensing element range for each 28_C(50_F) change in ambient Temperature for acontroller set at 100% proportional bandProcess Temperature IndicationStandard on all Controllers and calibrated for thetemperature range orderedHazardous Area ClassificationComplies with the requirements of ATEX Group IICategory 2 Gas and DustCapillary LengthsStandard: m (15 foot)Optional: Consult your Fisher sales office salesoffice for other lengthsApproximate kg (18 pounds)- continued - 4156K and 4166K Temperature ControllersProduct.

5 4156 KSeptember 2004 3 Specifications (continued)Construction MaterialsSee table 4 Output pressure gauge IndicationsSee table 5 OptionsJStainless steel bellows and Jstainless steelrelay1. These terms are defined in ISA Standard An adjustable differential gap (differential gap Controllers ) is equivalent to an adjustable The pressure / Temperature limits in this bulletin and any applicable standard or code limitation should not be 1. Available ConfigurationsType Number(1)Proportional-OnlyProportional-P lus-ResetDifferential GapAnti-Reset Windup4156KX4156 KSX4166KX4166 KFXX1. The suffix R is added to the type number of a construction specified for reverse 2. Temperature Ranges of Temperature Element Assemblies(1) Temperature SPAN, _CTEMPERATURE RANGE, _COVERRANGE LIMITS, _C(2)1000 to 1002001500 to 1502002000 to 2003302500 to 2505003000 to 3005004000 to 4005005000 to 500600 Temperature SPAN, _FTEMPERATURE RANGE, _FOVERRANGE LIMITS, _F(2)0 to 10020010050 to 150225100100 to 20025015050 to 2003702000 to 20047020050 to 2504353000 to 3004004000 to 4007806000 to 6008708000 to 800100010000 to 100012001.

6 Class IIIB per SAMA Standard With m (15 foot) capillary tube. If these limits are exceeded, a permanent zero shift may 3. Supply pressure RequirementsOUTPUT SIGNAL RANGENORMAL OPERATINGSUPPLY pressure (1)MAXIMUM ALLOWABLESUPPLY pressure TOPREVENT INTERNALPART DAMAGE(2) to (0 and differential gap)3 to 15(0 and 20 differential gap) to (0 and differential gap)6 to 30(0 and 35 differential gap) If this pressure is exceeded, control may be If this pressure is exceeded, damage to the controller may and 4166K Temperature ControllersProduct :4156 KSeptember 2004 4 Table 4. Construction MaterialsPartMaterialThermal element assembly(1)Stainless steelInterior TubingStainless steelExterior TubingCopper (with or without PVC plastic lining), stainless steel, or synthetic rubberExterior fittingsBrass or stainless steelNozzle and reversing blockStainless steel/zincRelay springs and spring plateStainless steelRelay diaphragmsNitrileOther metal relay parts, proportional bellows, and/orexhaust/reset bellowsAluminum/brass or aluminum/stainless steelReset valve assembly and differential relief valve(Types 4166K and 4166KF Controllers only)Aluminum/brass/zinc/plated steelO-ringsNitrileGasketsNeopreneCoverM arine-grade aluminum (Alloy 13)

7 With glass gauge windowsCase and set point dialAluminumProportional valve assemblyBrass/plated steel or stainless steelFlapperInvar 36 Control linkMonel and/or stainless steelFlexure and Temperature setting adjustment assembliesAluminum/steel/stainless steel/plasticCalibration adjusterZincBushing(2)Brass(3) or stainless steelThermowell(2)Brass(3) carbon steel, Monel, or stainless steel1. Contacts the process fluid unless used in a Contacts the process For use with 10 mm (3/8 inch) diameter Temperature bulb 5. Output pressure GaugesGAUGE RANGEGAUGE SCALEFor .2 to Bar (3 to 15 psig) or0 and Bar (0 and 20 psig) OutputFor to Bar (6 to 30 Psig) or0 and Bar (0 and 35 psig) OutputTriple0 to 30 psig/0 to MPa/0 to 2 Bar0 to 60 psig/0 to MPa/0 to 4 BarDual0 to 30 psig/0 to 2 kg/cm20 to 60 psig/0 to 4 BANDSETTING OF 5 PROPORTIONALBAND SETTING OF 0OR 10 SUPPLY AIR FLOW, M3/HR2 OUTPUT, TO BAR (3 TO 15 PSIG) OUTPUT SIGNAL RANGE0.

8 21 .34 .48 .62 .76 .90 SETTING OF 5 PROPORTIONAL BANDSETTING OF 0 OR 102 OUTPUT, TO BAR (6 TO 30) OUTPUT SIGNAL RANGE0 .41 .69 .97 AIR FLOW, M3/HRNOTESTO CONVERT BAR TO PSIG DIVIDE BY CUBIC METERS PER HOUR (0_C AND BAR, ABSOLUTE) TO CONVERT TO SCFH-STANDARD CUBIC FEET PER HOUR (60_F AND PSIG) DIVIDE BY / ILFigure 2. Steady - State Air Consumption4156K and 4166K Temperature ControllersProduct :4156 KSeptember 2004 538B6006-C38B6019-AB2347-2 / ILSUPPLY PRESSUREEXHAUSTEXHAUST ENDOF RELAY VALVEBOURDONTUBEBEAM ANDFLAPPERNOZZLEOUTPUTTEMPERATUREELEMENT PRESSURESUPPLY PRESSUREOUTPUT PRESSURENOZZLE PRESSUREPROPORTIONALPRESSURERESET PRESSURETEMPERATUREBULBVENTEDRESETBEL-LO WSINLET END OFRELAY VALVESMALL DIAPHRAGMLARGE DIAPHRAGMFIXED ORIFICEPROPORTIONALBELLOWSSET POINTADJUSTMENTPROPORTIONALBANDADJUSTMEN TTO PROPORTIONALBELLOWSTO RESET BELLOWSFROMRELAYRESETADJUSTMENTPROPORTIO NALBANDADJUSTMENTTO PROPORTIONALBELLOWSTO RESET BELLOWSFROMRELAYRESETADJUST-MENTPROPORTI ONALBANDADJUSTMENTDIFFERENTIALRELIEFVALV EPROPORTIONAL PLUS RESET CONTROLWITH ANTI RESET WINDUPPROPORTIONAL PLUS RESET CONTROLPROPORTIONAL ONLY CONTROLWITH ARROW DOWN-RELIEVES ONDECREASING OUTPUT(OUTPUT AT SUPPLY DURING)

9 SHUTDOWN)Figure 3. Schematic of 4156K and 4166K Series Temperature ControllersPrinciple of OperationFigures 3, 4, and 5 show construction variationsbetween the Controllers . Table 1 relates constructionvariations to type ControllersRefer to figures 3 and the process Temperature increases, pressureincreases within the Bourdon tube extending itsradius of arc. This moves the flapper toward thenozzle (in a direct-acting controller ) restricting flowthrough the nozzle and increasing nozzle this occurs, relay action increases the outputpressure of the a Type 4156K proportional-only controller , aportion of the output pressure is fed back to theproportional bellows. The action of the proportionalbellows counters the flapper movement that resultedfrom the process Temperature change and backs theflapper away from the nozzle until equilibrium isattained.

10 The proportional band adjustmentdetermines the amount of output pressure that is fedback to the proportional bellows. Adjusting theproportional band changes the gain of the and 4166K Temperature ControllersProduct :4156 KSeptember 2004 6 REVERSINGBLOCKVENTED BELLOWSPROPORTIONALBELLOWSW8093 / ILFigure 4. Direct-Acting Type 4156K ControllerRESET BELLOWSPROPORTIONAL BELLOWSRESET VALVEW8085 / ILFigure 5. Direct-Acting Type 4166K ControllerThe set point adjustment changes the proximity ofthe nozzle and flapper as does a change in processtemperature. When the set point is changed,however, the nozzle moves with respect to shown in figure 6, moving the reversing block andbellows connection changes the controller actionfrom direct to reverse, and vice versa. Withreverse-acting Controllers , an increase in processtemperature causes a decrease in output ControllersRefer to figures 3 and of the Type 4166K Proportional-plus-resetcontroller is similar to that of the proportional-onlycontroller except that output pressure is fed back tothe reset bellows, through a reset restriction valve,as well as to the proportional bellows.