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BARTON Models 289A & 291B DP Switches IOM

1. Maximum DP 50 0 100 CLOSED OPEN SWITCH CONTACTS CONTACTS SWITCH A SWITCH LEFT RIGHT Figure 1 3 Switch Actuation Example Notes 1 Cam rotates counterclockwise with increased pressure 2 Switches shown with low switch set at 25 differential pressure DP High switch set at 75 differential pressure DP 3 To change setpoint loosen lock screw move switch plate tighten screw and test setpoint 4 Internal wires use No 22 AWG and external wires use No 18 AWG 1 4 Specifications General Actuating Unit DPU Barton Model 199 DPU DISE SIZE u tenn 6 inches 152 mm Temperature Limits Ambient 40 F C to 180 F 80 C Indication Accuracy SPDT 0 10 w c to 0 349 w c 1 0 ES 0 25 mbar to 0 867 mbar 1 0 ES 0 350 w c to 0 100 PSID 1 25 ES 0 869 mbar to 0 6 9 bar 1 25 ES Indication Accuracy DPDT Add 1 to SPDT values Point of Switch Actuation Add 1 2 to SPDT values Switch Accuracy of Switch Repeatability 0 25 of full scale Switch Deadband 5 SPDT 6 DPDT SWRC Dypo u uuu s astasqa Mechanical Snap Acting ass Single Pole Double Throw SPDT Double Pole Double Throw DPDT Switch Rating IU opt 5 Amps PRU Qu 2 5 Amps 30 VDC Inductiv 1 0 Amps 30 VDC Resistive 3
2. CAMERON Measurement Systems BARTON MODEL 289A 291B DIFFERENTIAL PRESSURE INDICATING SWITCHES Installation Manual Manual No 10305 Rev B December 2004 TABLE OF CONTENTS PAPE T 2 SECTION 1 INTRODUCTION Lu 1 2 Main Components 4 To byte t e arto MUNERE 5 1 4 S Decr l Oi 6 SECTION 2 INSTALLATION uuu aaa 7 EE r E E A AA AAE A A E A E E 7 2 2 Mounting Piping DPU Installation 7 2 3 Electrical Connection Switches Relays 7 pm ual c 7 PW rui e I SECTION 3 MAINTENANCE AND CALIBRATION 9 jj Reg ired bou e 9 3 2 DPU Installation Test Calibration Maintenance 9 3 3 Bezel Lens or Cover Installation and Removal 9 2 Calibration 10 3 5 Pointer Installation and Removal 10 3 6 Indicator Calibration 11 3 7 Changing Switch Setpoint 12 2 5 Completo Calibration a LIL etnia avr cecus a 14 3 9 Preventative M3In en ance u u x
3. RANGE ADJ U V E vat 4 26 Ft TO ADJUST SWITCHES REMOVE COVER ASSEMBLY AND ADJUST WITH 1 8 HEX WRENCH MAX LINE POINTER STOPS ZERO une FRONT VIEW 1 VERTICAL PIPE MTG _ ALTERNATE PIPE MTG ADAPTER MAT L STEEL THREADED FOR 1 1 2 OR 2 STD PIPE See Note 4 j A 17 64 D 4 PLACES EQ SPACED 45 2 PLACES 14 OR 2 PIPE NIPPLE ii A LENGTH TO SUIT ALTERNATE FITTING i FOR WALL MOUNTING M M Ta WALL REF WALL MTG PANEL MTG CUTOUT Table 4 1 Model 289A Dimensions as shown in Figure 4 1 pg 19 PRESSURE PRESSURE HOUSING CONNECTION RATING MATERIAL PSI MPa BOTTOM ss gt 1 2 1 4NPT 10 5 32 7 1 8 2 2 9 64 HORS FO Note 1 Note1 257 9 1810 508 512 20 7 1 2 1 4NPT 10 5 32 7 1 8 2 2 964 Note 1 Note1 257 9 181 0 50 8 51 2 4 500 1 2 1 4NPT 10 5 32 7 1 8 2 2 9 64 81 0 Ti Note 1 Note 1 257 9 481 0 508 61 2 FORGED ALLOY ST 4142 E pres 10 5 32 7 1 8 2 2 T 6 000 FORGED STNL ST 17 4 PH Note2 Note2 257 9 181 0 50 8 50 8 41 4 FORGED ALLOY ST 4142 1 2 1 ANPT 10 5 32 7 1 8 2 2 964 FORGED STNL ST 17 4 PH Note 1 Note 1 257 9 181 0 50 8 51 2 Note 1 Can be reversed when ordered or can be rotated 180 in the field Note 2 Suita
4. This ring also acts as a seal between the bezel and the case to ensure a moisture fume and dust free atmosphere for the indicator and switch mechanism Model 291B has an explosion proof case that is certified for Class I Division 1 Groups B C amp D service The large cover lens allows maximum readability of the indicating pointer Switches and all adjustments are readily accessible when the cover is removed Figure 1 2 page 4 The built in switches energize either single or dual alarm circuits when the measured differential pressures exceed predetermined limits These limits may be either maximum minimum or both Figure 1 1 Model 289A left and Model 291B right Differential Pressure Indicating Switches Actuating cam Stop screw Stop screw Low alarm switch High alarm switch Switch lock N Switch lock Plunger screw V s m Differential drive arm Plunger Screw a n lt High alarm relay EN 8 lt umm Switch link a Terminal strip WI 0 0 TPT Hex hub zero adjust Movement assembly Low alarm High alarm switch adjust switch adjust Pointer Figure 1 2 Switches and adjustable controls 1 2 Main Components A Indicating Switch B Differential Pressure Unit DPU 289A and 291B are actuated by a Barton Model 199 For detailed information on the actuating DPU see the Barton Model 199 DPU user manual Part No 10030 1 3 Indic
5. NOT SHOWN SEE DPU 199 1 MANUAL 1 2 HIGH EXTERNAL WIRING ASSY 2 5 Long HIGH ALARM SPDT WITHOUT RELAY S655 0056B 290B 1090B HIGH ALARM DPDT WITHOUT RELAY HIGH ALARM WITH RELAY 290B 1084B LOW EXTERNAL WIRING ASSY 2 5 Long 1 LOW ALARM SPDT WITHOUT RELAY 0288 0021B LOW ALARM DPDT WITHOUT RELAY 290B 1089B LOW ALARM WITH RELAY 0288 0008B LOW SWITCH ASSY 1 LOW ALARM SPDT WITHOUT RELAY 0288 0024B LOW ALARM DPDT WITHOUT RELAY 290B 1010B LOW ALARM WITH RELAY 0288 0039B HIGH ALARM DPDT WITHOUT RELAY 290B 1012B HIGH ALARM WITH RELAY 290B 1008B LOW ALARM DRIVE PLATE ASSY 0288 0026B HIGH SWITCH ASSY 1 HIGH ALARM SPDT WITHOUT RELAY 290B 1006B 7 HIGH ALARM DRIVE PLATE ASSY 0288 0027B LOW SWITCH ADJUSTMENT INDEX ASSY 0288 0028B HIGH SWITCH ADJUSTMENT INDEX ASSY 0288 0029B LOW RELAY ASSY Non CE Use Only 11 Coil Voltage 6 VAC 12 VAC 24 VAC 125 VAC 250 VAC 6 VDC 12 VDC 24 VDC 110 VDC Coil Voltage 6VAC 12 VAC 24 VAC 125 VAC 250 VAC 6VDC 12 VDC 24 VDC 110 VDC Wired SPDT 0288 0015B 0288 0045B 0288 0016B 0288 0017B 0288 0046B 0288 0018B 0288 0019B 0288 0020B 0288 0047B HIGH RELAY ASSY Non CE Use Only Wired SPDT 0288 0009B 0288 0042B 0288 0010B 0288 0011B 0288 0043B 0288 0012B 0288 0013B 0288 0014B 0288 0044B Wired DPDT 0288 1045B 0288 1035B 0288 1044B 0288 1043B 0288 1034B 0288 1038B 0288 1037B 0288
6. ONLY INDICATES RECOMMENDED SPARE PART WHEN ORDERING PARTS PLEASE SPECIFY THE SERIAL NUMBER OF THE INSTRUMENT WITH WHICH THEY ARE TO BE USED SCALEPLATE IDENTIFICATION IF THE PLATE SHOWS AN SCR NUMBER THIS WITH IDENTIFY IT OTHERWISE PROVIDE THE FOLLOWING INFORMATION e SQUARE ROOT OR LINEAR GRADUCATION e SCALE E G 0 100 25 0 100 ETC e NUMBER OF GRADUATIONS LINEAR SCALES ONLY e DATA E G PSID INCHES WATER COLUMN ETC IF THE PLATE HAS MULTIPLE SCALES OR COLORS OTHER THAN BLACK AND WHITE CONSULT FACTORY FOR PRICING DESCRIPTION SWITCH WIRED HIGH ALARM NOT SHOWN MEN 26 Figure 5 2 Model 291B Assembly Drawing WARNING N Use only spare parts identified in this manual Cameron bears no legal respon sibility for the performance of a product that has been serviced or repaired with parts that are not authorized by Cameron 27 tS BACK OF ENCLOSURE BODY BOX X 5 16 SPLIT LOCK WASHER 4 X 5 16 18 HEX NUT y 4 X 5 16 18 X 1 1 2 MACHINE SCREW TO BODY JOINT WITH LOCTITE 271 PRIMER T 0108 02096 GASKET SPACER PLATE Neur GREASE 0002 1003V BETWEEN TORQUE TUBE NUT AND ADAPTER 1 5 16 m GROUP 8 ADAPTER SB55 D048C TORQUE TUBE BODY JOINT WITH LOCTITE 271 amp WITH GLAND NUT PRIMER T Figure 5 3 Model 291B Detail Drawing 28 Table 5 2 Model 291B Parts List ITEM DESCRIPTION PART NO PER UNIT 1 DIFFERENTIAL PRESSURE UNIT
7. RD HD NOT SHOWN LOW OR HIGH ALARM SINGLE 0111 0007J DUAL ALARM 0111 0007J LOW OR HIGH ALARM SINGLE WITH RELAY 0111 0007 SCREW 4 40 X 1 4 SST SL FL HD WITH RELAY ONLY LOW OR HIGH ALARM SINGLE 0112 1022J DUAL ALARM 0112 1022J SCREW 3 48 X 3 16 SST SL BINDING HD LOW OR HIGH ALARM SINGLE 0117 0007J DUAL ALARM 0117 0007J SCREW 8 32 X 1 4 SST SL BINDING HD LOW OR HIGH ALARM SINGLE 0117 0016J DUAL ALARM 0117 0016J 24 PLUG SCR 8 32 X 1 4 SST PAN HD SINGLE 0119 0042J NOT SHOWN WASHER SST LOW OR HIGH ALARM SINGLE 0317 0019J DUAL ALARM 0317 0019J WASHER NO 3 FLAT SST LOW OR HIGH ALARM SINGLE 0003 0045K DUAL ALARM 0003 0045K 7 WIRE NUT CONNECTOR NOT SHOWN LOW OR HIGH ALARM SINGLE WITH RELAY 0109 0017T DUAL ALARM WITH RELAY 0109 0017T O gt cO N N C2 NO O N 15 27 Table 5 1 Model 289A Parts List cont d ITEM DESCRIPTION PART NO PER UNIT M EE n REIS 48 PLATE SCALE SEE NOTES BELOW BLACK Cue 0031C WHITE 0288 1014C 1014C ae NOT SHOWN moose 50 SWTCH WIRED LOWALARMINOTSHOWN f LOW ALARM DPDT WITHOUT RELAY 2 5401 00164 LOW ALARM WITH RELAY 0288 0004B HIGH ALARM SPDT WITHOUT RELAY 0257 0008B HIGH ALARM DPDT WITHOUT RELAY 1 0257 0008B 57 RETAINER RING oo ae SINGLE ALARM DUAL ALARM INDICATES NON CE USE
8. Service Disconnected from process Setpoint Adjustment lines or mounted on bench 1 2 3 Drain and vent housings Attach calibration pressure source air or N5 to HP housing Apply pressures and observe pointer readings for accuracy Use a pressure standard Heise gage or equivalent for reference Change pressures slowly in discrete steps A bleed pressure method may cause errors Change switch setpoint as described in Part A page 12 Check setpoint by changing measured pressure to actuate switch For Example To verify low switch setpoint to 24 psid apply approximately 30 psi Then reduce pressure to approximately 25 psid hold for a few seconds then continue in 1 4 psid steps until switch actuates If setpoint is incorrect continue instructions in Part A To measure switch deadband reduce pressure to zero then increase pressure until switch resets To verify repeatability of setpoint repeat step 5 several times For improved accuracy use smaller increments of pressure Allow extra time for slow response gages and for test systems that have long runs of small bore tubing High alarm switches right side of the scale are adjusted in a similar manner Apply increasing pressure to establish the switch setpoint decreasing pressure to measure deadband C Notes 1 2 Always check setpoint after tightening switch lock screws Either switch may be set at any point of the scale except allowance must be made f
9. cam does not touch the ACTUATOR ARM roller side shields PLUNGER The actuator arm moves STOP freely on its pivot All switch mounting screws Figure 3 5 are tight Cam Follower Position Linkages are straight and do not bind at the pivots Correct any problems that are encountered A Calibration Setup 1 B Calibration Procedure see Figure 3 6 Connect lamp or buzzer to switch output leads Connect a test voltage to switch input terminals on terminal strip A low voltage is recom mended for safety If relay is installed in instrument coil voltage must be applied to switch Unlock switch plate back out stop screw and move plate until roller is positioned at top of the cam Observe that switch does not actuate when roller is moved from low point on cam to high point If it does actuate back out plunger screw with roller on top of cam until switch de actu ates Advance plunger screw until switch actuates then advance plunger screw an additional 60 one flat Exercise switch roller across top of cam to verify steady operation Advance stop screw to touch switch then back out screw 1 5 turns 9 flats To calibrate switch linkage required when instrument is rebuilt proceed as follows 1 Loosen three linkage screws and turn crank to 12 o clock position Use a 1 8 in Allen wrench to hold index shaft and slip index pointer to 0 on switch index N REFERENCE MARKS TO S
10. shaft and lifting pointer with arms Finger pressure should be sufficient to pull the pointer free If more pressure is required insert an Allen wrench into head of the screw for leverage Avoid applying exces sive pressure which can cause the pin to break 3 6 Indicator Calibration DP Differential Pressure See Warning on pg 9 1 Securely mount instrument in an approximately level position and connect DPU into the test setup as described in the Model 199 DPU manual POINTER TORQUE TUBE SHAFT Apply 50 differential pressure and align linkage between drive arm and DRIVE ARM movement as shown in Figure 3 3 Release pressure from DPU Check pointer for zero indication If necessary set pointer to zero by ADJUST SCREW slipping pointer on cM hub hold pointer Figure 3 3 with fingers and GEAR RANGE ARM ASSEMBLY Linkage Alignment turn hub with a 50 differential wrench pressure Apply 10046 pressure If pointer exceeds full scale lengthen the movement range arm by by turning the range adjust screw counterclockwise If the pointer does not reach full scale shorten the range arm by turning the range adjust screw clockwise Release pressure Set pointer to zero using pointer hub for zero adjustment Repeat as necessary to obtain zero and full scale readings Apply 50 differential pressure If pointer does not indicate 50 scale a linearity adjustment is necessary Loosen drive arm screw
11. 0 Amps 125 VDC 0 2 Amps 125 VDC Resistive 0 4 Amps Relay Coil Power Requirement BOR rc 1 5 Watts 2 75 Volt Amps Contact Types Single Pole Double Throw SPDT Double Pole Double Throw DPDT Contact Rating 15 Amps at 115 VAC CE Rating Less than 50 VDC or 35 VAC Non CE Use Only Voltage limited to less than 50 VDC or 35 VAC for CE applications gt Arc suppression recommended for inductive loadings SECTION 2 INSTALLATION 2 1 General The instrument should be inspected at time of unpacking to detect any damage that may have occurred during shipment Note The unit was checked for accuracy at the factory do not change any of the settings during examination or accuracy will be affected For applications requiring special cleaning precautions a polyethylene bag is used to protect the instrument from contamination This bag should be removed only under conditions of extreme cleanliness 2 2 Mounting Piping DPU Installation Refer to the Barton Model 199 DPU user manual Part No 10030 2 3 Electrical Connection Switches Relays Units are supplied with either single or dual alarm switches and or relays depending on customer order The direct set switch contacts are adjustable over the entire scale range Wiring diagrams on page 8 show the electrical connections for the switches The high s
12. 1036B 0288 1033B Wired DPDT 0288 1054B 0288 1048B 0288 1053B 0288 1052B 0288 1047B 0288 1051B 0288 1050B 0288 1049B 0288 1046B 29 Table 5 2 Model 291B Parts List cont d ITEM DESCRIPTION PART NO PER UNIT 1 POINTER ASSY WHITE PLATE SCREW LOW OR HIGH ALARM SINGLE DUAL ALARM SPRING WASHER LOW OR HIGH ALARM SINGLE DUAL ALARM LOW OR HIGH ALARM SINGLE DUAL ALARM LOW OR HIGH ALARM SINGLE DUAL ALARM SCREW 3 48 X 3 16 SST SL BINDING HD LOW OR HIGH ALARM SINGLE DUAL ALARM SCREW 4 40 X 1 4 SST SL FL HD WITH RELAY ONLY LOW OR HIGH ALARM SINGLE DUAL ALARM SCREW 8 32 X 1 4 SST SL BINDING HD LOW OR HIGH ALARM SINGLE DUAL ALARM WASHER 8 FLAT SST LOW OR HIGH ALARM SINGLE DUAL ALARM WASHER NO 3 FLAT SST LOW OR HIGH ALARM SINGLE DUAL ALARM LOW OR HIGH ALARM SINGLE WITH RELAY DUAL ALARM WITH RELAY 0288 0030B 0288 0031B 0317 0012C 0317 0012C 0257 0019C 0257 0019C 0288 0016C 0288 0016C 0288 0017C 0288 0017C 0117 0007J 0117 0007J 0112 0037J 0112 0037J 0117 0016J 0117 0016J 0317 0019J 0317 0019J 0003 0045K 0003 0045K 0109 0017T 0109 0017T Table 5 2 Model 291B Parts List cont d ITEM DESCRIPTION PART NO PER UNIT 4 Co PLATE SCALE SEE NOTES BELOW BLACK 0288 0031C WHITE 0288 1014C IT10 1090B SWITCH WIRED LOW ALARM LOW ALARM SPDT WITHOUT RELAY 0257 0009B LOW ALARM DPDT WI
13. 2 1 4 7 1 8 6 000 FORGED STNL ST 17 4 PH Note 2 Note 2 9099 181 0 12 2 TOU FORGED ALLOY ST 4142 1 2 NPT 1 4 NPT 12 1 4 FORGED STNL ST 17 4 PH Note 1 Note 1 309 9 7 1 8 181 0 Note 1 Can be reversed when ordered or can be rotated 180 in the field Note 2 Suitable for use with Aminko fittings American Inst Co Silver Springs MD or equiv Note 3 For Aminco ports dimension is 2 in 50 8 mm Metric conversions are approximate 22 SECTION 5 PARTS DRAWINGS PARTS LISTS lt 23 Figure 5 1 Model 289A Assembly Drawing WARNING N Use only spare parts identified in this manual Cameron bears no legal respon sibility for the performance of a product that has been serviced or repaired with parts that are not authorized by Cameron 23 Table 5 1 Model 289A Parts List ITEM DESCRIPTION PART NO PER UNIT 1 DIFFERENTIAL PRESSURE UNIT NOT SHOWN SEE DPU 199 1 MANUAL 1 2 LOW ALARM EXT WIRING ASSY 2 5 LENGTH NOT SHOWN UNITS WITHOUT RELAY SPDT 0288 0021B UNITS WITHOUT RELAY DPDT 5401 00184 UNITS WITH RELAY SPDT OR HIGH ALARM EXT WIRING ASSY 2 5 LENGTH NOT SHOWN UNITS WITHOUT RELAY SPDT UNITS WITHOUT RELAY DPDT UNITS WITH RELAY SPDT OR DPDT LOW ALARM SWITCH ASSY 1 UNITS WITHOUT RELAY SPDT UNITS WITHOUT RELAY DPDT UNITS WITH RELAY SPDT OR DPDT HIGH ALARM SWITCH ASSY 1 UNITS WITHOUT RELAY SPDT UNITS WITHOUT RELAY DPDT UNITS WITH R
14. ELAY SPDT OR DPDT _ HIGH ALARM DRIVE PLATE ASSY 0288 0027B LOW SWITCH ADJUSTMENT INDEX ASSY 0288 0028B 10 HIGH SWITCH ADJUSTMENT INDEX ASSY 0288 0029B LOW RELAY ASSY Non CE Use Only m 24 Coil Voltage 6 VAC 12 VAC 24 VAC 125 VAC 250 VAC 6 VDC 12 VDC 24 VDC 110 VDC HIGH RELAY ASSY Non CE Use Only Coil Voltage 6VAC 12 VAC 24 VAC 125 VAC 250 VAC 6VDC 12 VDC 24 VDC 110 VDC Wired SPDT 0288 0015B 0288 0045B 0288 0016B 0288 0017B 0288 0046B 0288 0018B 0288 0019B 0288 0020B 0288 0047B Wired SPDT 0288 0009B 0288 0042B 0288 0010B 0288 0011B 0288 0043B 0288 0012B 0288 0013B 0288 0014B 0288 0044B Wired DPDT 0288 1045B 0288 1035B 0288 1044B 0288 1043B 0288 1034B 0288 1038B 0288 1037B 0288 1036B 0288 1033B Wired DPDT 0288 1054B 0288 1048B 0288 1053B 0288 1052B 0288 1047B 0288 1051B 0288 1050B 0288 1049B 0288 1046B Table 5 1 Model 289A Parts List cont d ITEM DESCRIPTION PART NO PER UNIT 13 POINTER ASSY WHITE 0288 0030B BLACK 0288 0031B 14 BEZEL ASSY WITH PLASTIC LENS 1 PLATE SCREW LOW OR HIGH ALARM SINGLE 0317 0012C DUAL ALARM 0317 0012C SPRING WASHER LOW OR HIGH ALARM SINGLE 0257 0019C DUAL ALARM 0257 0019C 17 LINK PLATE LOW OR HIGH ALARM SINGLE 0288 0016C DUAL ALARM 0288 0016C STRAP LOW OR HIGH ALARM SINGLE 0288 0017C DUAL ALARM 0288 0017C PLUG SCREW 4 40 X 1 8 SL
15. REP 15 3 10 Locking Drive Arm to Torque Tube 16 3 11 Troubleshooting 16 SECTION 4 INSTALLATION DRAWINGS 19 SECTION 5 PARTS DRAWINGS PARTS LISTS 23 This manual is for the Indicating Switch only refer to Model 199 DPU manual Part No 10030 for detailed information about the DPU used with the indicating switch AN saren Before installing this instrument review the installation instructions and safety notices in Section 2 of this manual and in the Barton Model 199 DPU manual DANGER notes indicate the presence of a hazard which will cause severe personal injury death or substantial property damage if warning is ignored WARNING notes indicate the presence of a hazard which can cause severe personal injury death or substantial property damage if warning is ignore CAUTION notes indicate the presence of a hazard which will or can cause mod erate personal injury or property damage if warning is ignored SECTION 1 INTRODUCTION 1 1 General The Barton weatherproof Model 289A and the explosion proof Model 291B are differential pressure indicating switches Figure 1 1 The 289A has a NEMA 4 watertight die cast aluminum case finished with a weather resistant black epoxy resin paint The cover lens is secured in the bezel with an elastomer ring to reduce the possibility of accidental breakage
16. THOUT RELAY 1 0257 0009B LOW ALARM DPDT WITHOUT RELAY 2 290B 1009B LOW ALARM WITHOUT RELAY 1 0288 0004B SWITCH WIRED HIGH ALARM HIGH ALARM SPDT WITHOUT RELAY 290B 1004B HIGH ALARM DPDT WITHOUT RELAY 1 290B 1004B HIGH ALARM DPDT WITHOUT RELAY 2 290B 1011B HIGH ALARM WITH RELAY 290B 1059B PULLER POINTER NOT SHOWN NAMEPLATE NOT SHOWN RETAINER RING SINGLE ALARM 0087 0015T DUAL ALARM 0087 0015T 38 39 40 41 42 43 44 45 46 48 49 50 1 5 N Co 56 1 57 58 1 co NOTES INDICATES NON CE USE ONLY NDICATES RECOMMENDED SPARE PART WHEN ORDERING PARTS PLEASE SPEC FY THE SERIAL NUMBER OF THE INSTRUMENT WITH WHICH THEY ARE TO BE USED 31 Product Warranty A Warranty Cameron International Corporation Cameron warrants that at the time of shipment the products manufactured by Cameron and sold hereunder will be free from defects in material and workmanship and will conform to the specifications furnished by or approved by Cameron B Warranty Adjustment 1 If any defect within this warranty appears Buyer shall notify Cameron immediately 2 Cameron agrees to repair or furnish a replacement for but not install any product which within one 1 year from the date of shipment by Cameron shall upon test and examination by Cameron prove defective within the above warranty 3 No product will be accepted for return or replacement without the wri
17. WITCH INDEX Figure 3 6 Linkage Arrangement B Calibration Procedure continued J 4 10 Li Tighten screw on crank to mid slot position Turn switch index pointer to 1 index numbers refer to numbers on outer edge of scaleplate Apply 10 differential pressure and adjust switch plate until switch actuates Lock the two linkage screws Rotate index pointer to 9 Apply 9046 differential pressure and adjust crank radius until switch actuates Recheck 10 and 90 setpoints Adjust crank radius and index pointer until both setpoints are 2 accurate nominal If switch is to be field set at low differential pressure values 1 or 2 of pressure range check crank to prevent a top dead center position Otherwise minimum setpoint position will be restricted and setpoint may become reversed Adjust switch to actuate at desired pressure by applying test pressures in a decreasing direction in discrete steps Allow unit and pressure system to stabilize Then change pressure a small amount The magnitude of the pressure change is determined by desired accuracy of test Tighten lock screw before testing switch performance The high switch is usually set to actuate at increasing pressure There fore when calibrating high switch apply test pressure in an increasing direction This amount of loading will prevent cam runout of a similar condition Excessive plunger loading more than 3 flats may cause roller to d
18. and move arm to shift pointer in direction of error a distance of about 10 times linearity error 50 DP Tighten drive arm screw Release pressure and reset pointer at zero Check the span If gear in move ment reaches limit of travel as a result of linearity adjustment step 7 slip range arm along gear approximately 5 degrees from normal 37 5 degree angle to approximately 43 degrees Range arm is slipped by applying pres sure to range arm with thumb while holding gear firmly in place Retest pointer response at 50 0 and 100 of full scale differential pressure and adjust linkage until readings are acceptable 11 9 Apply 0 25 50 75 100 75 50 25 and 0 of full scale differential pressure consecutively to instrument without overshoot Lightly tap indicator to overcome friction Pointer should accurately indicate each applied pressure 10 Set stops to prevent pointer from striking snubbers on scale Test setting by moving pointer from zero position to 50 position manually and then letting pointer return freely If necessary tap pointer hub to tighten it to shaft 3 7 Changing Switch Setpoint Tools Screwdriver 1 8 Hex Allen wrench See Warning on pg 9 Setpoint The measured pressure at which the snap switch actuates and thereby changes the states of the N O and N C contacts For example the setpoint of the low switch is 24 psid with decreasing pressure Deadband The difference in the measured pre
19. ating Switch refer to Figures 1 3 and 2 1 Rotation of the DPU s torque tube shaft is coupled through connecting linkage within the switch case to move the pointer across the scale plate An actuating cam directly connected to the torque tube shaft rotates with the motion of the shaft Two cam follower roller actuator arm assemblies one for each switch respond to torque tube rotation by opening and closing the switches as they ride on and off the cam The levels of differential pressure at which the switches actu ate are adjustable with high and low alarm switch adjustments on the scale plate Standard models have two alarm switches one or both may be used Each switch can be connected to operate normally opened or normally closed The direct set switch contacts are adjustable over a scale range of 5 95 nominal BOTH SWITCHES RELAXED Miid point DP 50 0 100 SWITCH B SWITCH CLOSED OPEN LEFT RIGHT CONTACTS CONTACTS SWITC HIGH PLUNGER B RIGHT GREEN WHITE GREEN BLACK SCREW Note Wire Green for 289A and Violet for 291B TERMINAL BLOCK I CASE SWITCH A ACTUAT ED SWITCH RELAXED Zero DP 50 pma B RIGHT SWITCH A LEFT 0 100 CLOSED OPEN SWITCH CONTACTS CONTACTS SWITCH A RELAXED SWITCH ACTUATED
20. ble for use with Aminko fittings American Inst Co Silver Springs MD or equiv Note 3 All standard pipe fittings furnished by customer Note 4 Cast alum pipe mount supplied unless otherwise specified Specify pipe size when ordering threaded Stl adapter Metric conversions are approximate 20 T ive f1 B 190 5 29 2 3 4 11 16 B 21 16 HIGH PRESSURE REAR VIEW HOUSING WIRING OUTLET 8 4 WIRE 18 AWG n 15 64 TOP PRESSURE CONN SEE TABLE c m T B _ WEE MN O 5 5 1 72 7 _ PULSRTION BOTTOM PRESSURE l CONN Am SLIP ON PIPE ATG Se 81 FOR 2 INCH STD PIPE 2 1 8 B 1 8 1565 11 SIDE VIEW Figure 4 3 Model 291B Outside Dimensions Part 1 of 2 21 10 3 8 263 SWITCH LOCKS POINTER ZERO ADJUST RANGE ADJUST ZERO LINE MAX LINE SWITCH SETTING 1 8 HEX SOC TO ADJ SWITCH SETTINGS 2 PLACES REMOVE THREADED COVER RSSY POINTER STOPS i FRONT VIEW Figure 4 4 Model 291B Outside Dimensions Part 2 of 2 Table 4 2 Model 291B Dimensions as shown in Figure 4 3 pg 21 PRESSURE PRESSURE HOUSING CONNECTION RATING MATERIAL PSI MPa Hg m n 9 3 000 1 2 1 ANPT 12 1 4 7 1 8 20 7 S IND e Tesla Note 1 1 3099 181 0 4 500 1 2 1 ANPT 12 14 7 1 8 81 0 Note 1 Note1 3099 181 0 FORGED ALLOY ST 4142 NS UNE 1
21. ck shaft tighten clamp screw an additional Sintered 1 3 to 1 2 turn This screw can normally turn one full revolution before breaking Slotted 1 4 to 1 3 turn The slot in the slotted clamp block should still be open LINK SINTERED N B TERMS CLAMP BLOCK LINK SLOTIED E be CLAMP BLOCK CLAMP SCREW 1 8 WRENCH 0163 0044C 3 92 ALLEM SHAFT WRENCH SHAFT CLAMP SCREW TO TIGHTEN Figure 3 4 Locking Drive Arm to Torque Tube 3 11 Troubleshooting See Warning on pg 9 Refer to Table 3 1 and Model 199 DPU manual 16 Table 3 1 Troubleshooting Possible Source Probable Cause Corrective Action Low or no Primary element Orifice installed backwards Replace orifice Indication or DPU refer to or oversized DPU Manual Flow blocked upstream Clean out run or open from run valve Loss of liquid in reference Refill reference leg leg liquid level Density changes in process Refill reference leg with media or reference leg same density liquid as process media Primary element Pressure tap holes plugged Clean out piping to DPU piping and or piping plugged refer to DPU Manual Bypass valve open or Close bypass valve s leaking and or repair leaks Liquids or gases trapped in Vent piping piping Block or shutoff valves Open block or closed shutoff valves Piping leaks on HP side Repair leaks Low or no Bellows unit refer Housing filled with solids Clean out housing Indication to DPU Manual restri
22. cting bellows movement cont d esa Gas liquid service liquid Vent housing gas service trapped in housing HP housng gasket leak Replace gasket DPU tampered with Return BUA for repair Indicator Loose linkage or movement Tighten or replace alarm switch mechanism Out of calibration Calibrate Dirty or corroded mechanism Clean or replace Wiring interfering with move Re route wiring ment Dirty mechanism Clean mechanism High Primary source Orifice partially restricted or Clean out or replace indication too small Primary element Piping leaks on LP side Repair leaks to DPU piping Bellows unit Gas liquid service or liquid Vent housing Refer to DPU gas service trapped in Manual housing LP housing gasket leak Replace gasket Range Spring broken or Return BUA for repair DPU tampered with 17 ndication cont d Erratic 18 ndication Inaccurate or No Electrical Alarm Table 3 1 Troubleshooting cont d Possible Source Probable Cause Corrective Action High Indicator alarm switch mechanism Primary element Primary element to DPU piping Bellows unit Refer to DPU Manual Power supply Alarm switch Loose linkage or movement Tighten or replace Out of Calibration Calibrate Flow pulsating M199 DPU adjust dampening All o hers install dampening device upstream of DPU run Liquid gas service or gas bubble liquid service trapped in pip
23. e range Pointer should move approximately 5 to 10 above fullscale Apply 0 50 and 100 of full scale pressure If indication is within specified limits instrument calibration is satisfactory and no adjustments are necessary If indications are incorrect perform calibration procedure Make sure instrument zero indication is correct otherwise repeat Step 2 Verify switch setpoints refer to section 3 7 page 12 3 5 Pointer Installation and Removal A 10 Pointer Installation See Warning on page 9 Position pointer on movement shaft with pointer set at zero scale If necessary enlarge hub hole using a tapered broach in toolkit Part No 0288 1032B 2 Lightly tap pointer hub with a flat end tool Use perpendicular blows to avoid bending shaft 3 Check calibration over entire range see section 3 8 If unit is correctly calibrated secure pointer to movement shaft by tapping hub with a hand set or other flat end tool POINTER PULLER 0163 0006 B Figure 3 2 Pointer Puller Pointer Removal See Warning on page 9 The pointer is removed with Barton Pointer Puller Part No 0163 0005B which is included in toolkit Part No 0288 1032B 1 Slide pointer puller along pointer until pin protruding from tip of screw in pointer puller is directly over movement shaft and arms of pointer puller are directly under pointer 2 Gently turn knurled head of screw clockwise pushing pin against move ment
24. er puller Pointer removal Small screwdriver Calibration adjustments Medium screwdriver Bezel removal DPU bracket screws 1 8 Open end wrench Calibration adjustments 1 8 Hex Allen wrench Switch setpoint adjustment 3 2 DPU Installation Test Calibration Maintenance Refer to the Barton Model 199 DPU user manual Part No 10030 3 3 Bezel Lens or Cover Installation and Removal WARNING EXPLOSIONPROOF UNITS PRIOR TO LOOSENING ANY ATTACHING HARDWARE HOUSING BOLTS OR COVER ASSEMBLY ASSURE SURROUNDING AREA IS AND REMAINS WELL VENTILATED PRIOR TO LOOSENING OR REMOVAL CASE COVER ASSEMBLY ALL ELECTRICAL POWER SUPPLIES MUST BE TURNED OFF THE COVER MUST BE REMOVED TO CALIBRATE THE INSTRUMENT BEFORE ANY MAINTENANCE CALIBRATION REVIEW MODEL 199 DPU MANUAL Part No 10030 For non explosionproof units the bezel gasket Part No 0277 0026C must be installed as shown below BEZEL GASKET 0277 00260 To remove the bezel and cover lens on non explosionproof units INSTALL WITH THIS SIDE WITH THIS 1 Loosen three screws on the TOWARD CASE SIDE TOWARD front of bezel 2 Tilt out bottom of bezel and Figure 5 1 slide bezel upward Bezel Lens BEZEL LENS The two snubbers Part No 0266 0028C on the scaleplate should not be com pressed against the lens cover and the pointer should not touch the lens Note Ensure correct bezel gasket orientation before placing instrument back in service Incorrec
25. ing Vapor generator incorrectly Re pipe installed Reference leg gassy or See piping instruc ions Liquid vaporizing in DPU Manual Obstructed bellows travel Clean bellows Gas trapped in DPU HP or Remove see Startup LP housing procedure Linkage dragging or dirty Adjust or clean Pointer dragging on Adjust pointer posi ion scaleplate Switch not properly Adjust switch adjusted Dirty or burned Replace switch contacts SECTION 4 INSTALLATION DIMENSIONAL DRAWINGS 7 1 2 1 8 HIGH PRESS HOUSING PRESS CONN 3 3 4 1 16 TOP amp BOTTOM B 1 16 PULSATION DAMPNER DUST CAP REAR VIEW LOW PRESS HOUSIN VERTICAL PIPE MTG PRESS CONN TOP amp BOTTOM A 3 32 Im 03 4 PANEL 3 8 MAX THICH TZ WIRING OUTLET 1 2 NPT WIRE AWG See Fig 2 1 ed 2 FT LONG FURNISHED TORQUE TUBE DAMPNER FAST RESPONSE OPTIONAL 7 3 4 MIN r 1 1 2 or 2 PIPE NIPPLE l E _ pu 4 MPIPEMOUNTING ADAPTER NI in MAT LCAST ALUMINUM ee passa L NON THREADED FOR 1 1 2 OR 2 pw a STD PIPE See Note 4 i N 1 pt vo x gt y 10 1 2 MIN n Note g PIPE CLAMP 1 1 2 OR 2 NPT SIDE VIEW OUTLET TO SUIT PIPE OR PANEL MTG Figure 4 1 Model 289A Outside Dimensions Part 1 of 2 19 7 1 2 D Figure 4 2 Model 289A ZERO ADJ Outside Dimensions
26. or deadband to enable switch to reset itself For example high switch right side of scale may be set at 100 of ES but should not be set near zero Also low switch may be set at zero but not near full scale Observe deadband values for specific models If switch performance is unsatisfactory such as setpoint does not repeat deadband is excessive pointer exhibits hysteresis contacts are unstable etc remove scale and inspect switch and mechanism Scale is split for removal without pulling pointer a SPDT This is the standard model low high or both b DPDT Two switches are stacked and actuated by a single lever low high or both c Three or four SPDT Switches have independent switch points Nos 1 and 3 are usually low switches set for decreasing pressures Nos 2 and 4 are usually set for increasing pressures d Hermetically Sealed Switch Micro 11HM41 this switch has wide deadband case is modified for electrical clearances amperes are reduced for 60 Hz service 13 3 8 Complete Calibration Before performing complete calibration procedure verify that instrument is out of calibration by performing calibration check procedure section 3 4 page 10 If instrument is out of calibration before performing complete calibration proce dure remove bezel lens and inspect switch mechanism to verify the following see Figure 3 5 See Warning on pg 9 The roller rotates without wobble or binding The
27. rag on cam Cam friction will be apparent by excessive hysteresis erratic pointer readings and inconsistent switch operation Check switch deadband actuate to reset by applying differential pres sures in a decreasing then increasing opposite for high switch direc tion Observe pressures To reduce deadband advance plunger screw two flats maximum Adjust high switch to actuate at desired pressure The procedure is the same as for the low switch 3 9 Preventative Maintenance Indicating Switch Periodically inspect alarm switch mechanism to verify that all mounting screws are seated properly Inspect linkage for wear Inspect integrity of electrical circuits Tighten as necessary DPU Warning Caution notices inspection cleaning procedures and maintenance procedures are presented in the Model 199 DPU manual Never perform any maintenance repair on the instrument or DPU without first reviewing all procedures and Warning Caution notices in the DPU manual 15 3 10 Locking Drive Arm to Torque Tube Refer to Model 199 DPU manual For explosionproof units refer to Figure 5 3 Model 291 Detail Drawing pg 28 See Warning on pg 9 1 Slip drive arm over torque tube shaft clear end of torque tube housing by approximately 0 030 in before securing to prevent interference 2 To tighten drive arm assembly onto torque tube shaft a While supporting block shaft tighten clamp screw until snug to shaft b Still supporting blo
28. registered trademark of Cameron International Corporation Cameron MEASUREMENT SYSTEMS HOUSTON 281 582 9500 NORTH x 1 800 654 3760 AMERICA HEAD OFFICE ms us c a m com ASIA 603 2287 1039 EUROPE 44 1243 826741 PACIFIC MIDDLE EAST ms asiapacific c a m com amp AFRICA ms uk c a m com USA CANADA UK e SCOTLAND CHINA UAE ALGERIA MALAYSIA INDIA KENYA WWW c a m com flo C CAMERON
29. ssures between switch actuation and switch reset Deadband is usually expressed as percent age of full scale of ES Deadband is not adjustable For example the switch above was found to reset at 26 4 psid with increasing pressure The deadband was 2 4 psi or 4 of the full scale 0 to 60 psid A In Service Instruments calibration pressures cannot be applied 1 Remove bezel Do not remove pointer or scale 2 Insert hex wrench in E 2 C ur DAMES LUN 3 Loosen switch lock l 0 screw item B 1 2 to A Q SWITCH 5 turn I z 4 With hex wrench D move index pointer item C to new set point as indicated on switch index item D 5 If possible check setpoint by varying process pressures and observing pointer readings when switch actuates Open manifold bypass valve slowly and watch for pointer jump at setpoint or by electrical signal Adjust setting if necessary repeat test several times to verify stability Note Switch index has 10 divisions shown by tick marks in Figure 3 4 Positions 0 5 and 10 are also labeled along the bottom of the index as well Example Scale has range of 0 60 psid Setpoint is 24 psid with decreasing pres sure 24 60 x 10 4 12 Move index pointer item C to division 4 Start from bottom of switch index 0 on low 10 on high Tighten switch lock item B snug plus 1 4 turn Do not over tighten This will place setpoint within 2 of full scale B Out of
30. t bezel gasket orientation will cause the instrument indicator to jam resulting in inaccurate readings For explosionproof units cover is unscrewed to gain access to the internal com ponents Note On some units a set screw must be loosened with a 1 8 in allen wrench before the bezel can be removed When re installing cover tighten cover securely and inspect lens for cracks or other defects that may affect the explosion proof rating 3 4 Calibration Check Normally all that is required to put switch into service is to verify that it remains at factory set calibration per the following instructions See Warning on pg 9 1 6 7 Securely mount unit in an appropriately level position and connect to standard pressure source per Model 199 DPU manual If zero indication is incorrect remove bezel lens cover on explosionproof units and reset pointer to zero Note For an exact zero setting hold the hexagon hub with a wrench and carefully slip the pointer on its hub until it points to zero graduation Replace bezel lens or cover To test for reverse travel connect pressure source to low pressure LP hous ing and vent high pressure HP housing Apply pressures approximately 150 of the differential pressure range The pointer should move approxi mately 5 to 10 below zero To test for overtravel connect pressure source to HP housing and vent LP housing Apply pressures approximately 150 of differential pressur
31. tten authorization of Cameron Upon such authorization and in accordance with instructions by Cameron the product will be returned shipping charges prepaid by Buyer Replacements made under this warranty will be shipped prepaid C Exclusions from Warranty 1 THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER EXPRESSED OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE 2 Components manufactured by any supplier other than Cameron shall bear only the warranty made by the manufacturer of that product and Cameron assumes no responsibility for the per formance or reliability of the unit as a whole 3 In no event shall Cameron be liable for indirect incidental or consequential damages nor shall the liability of Cameron arising in connection with any products sold hereunder whether such liability arises from a claim based on contract warranty tort or otherwise exceed the actual amount paid by Buyer to Cameron for the products delivered hereunder 4 The warranty does not extend to any product manufactured by Cameron which has been subjected to misuse neglect accident improper installation or to use in violation of instructions furnished by Cameron 5 The warranty does not extend to or apply to any unit which has been repaired or altered at any place other than at Cameron s factory or service locations by persons not expressly approved by Cameron Product Brand Barton is a
32. witch and low switch setpoint adjustment procedures are covered in section 3 7 page 12 For physical location of switches and connections see page 3 2 4 Switch Use Switch contact life is influenced by various application conditions such as tem perature humidity airborne contamination vibration amount of plunger travel cycling rate and rate of plunger travel and others as well as by the electrical circuit characteristics Note Arc suppression for inductive loads will prolong the life of the switch contacts Note Due to their size subminiature switches have small mechanical clearances therefore no rating above 250 VAC has been established 2 5 Startup For startup procedures warnings and information refer to the Barton Model 199 DPU user manual Part No 10030 289A SWITCH AND RELAY 289A SWITCH ONLY YELLOW O N33H5 291B 291B SWITCH ONLY LOW HIGH YELLOW O LAIOIA O L WHITE BLACK BLUE HITE BLACK RED 4 W r Notes both configurations Internal wires are No 22 AWG External wires are No 18 AWG Switch and relay ratings are shown on page 5 Relay coils are available in the following voltages 6 12 24 120 and 230 VAC or 6 12 24 110 VDC non CE use only Figure 2 1 Switch Wiring Connections SECTION MAINTENANCE AND CALIBRATION 3 1 Required Tools Toolkit Part No 0288 1032B Tool Purpose Point

BARTON Models 289A & 291B DP Switches IOM

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BARTON Models 289A &amp; 291B DP Switches IOM

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BARTON Models 289A & 291B DP Switches IOM