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1 PRESSURE SWITCHESSERIES 200 GOOD REPEATABILITY TAMPERPROOF SET POINT ADJUSTER WITHLOCKING DEVICE OVERTRAVEL STOP RUGGED DESIGNWEATHERPROOFFLAMEPROOFS eries 200 Pressure Switches is a Switzer mainstreamproduct range for switching upto 75 bar and includes modelsfor vacuum, compound and millibar ranges and high overloadprotection. Precision mechanisms are of stainless steel forarduous atmospheres and high humidity. Enclosures, sensingelements and switching modes can be combined to offer thevariety needed to suit the demands of rapidly expandingindustrial processes. Precise and accurate operation isobtained by using time proven seamless hydraulically formedbellows or diaphragm.

2 Setpoint is continuously adjustableover the instrument range. A scale is provided forapproximate switch SPECIFICATIONSE nclosureGMAluminium Pressure die cast weatherproofto / 316 SS, investment cast weatherproofto IP:66 GKAluminium die cast, weatherproof to IP:66 &flameproof to , IIB or IIC (Note 1)RangesSeveral std. ranges,from full vac. to 75 SS bellows or316L SS PartsRefer page FSR for 201 & 203 FSR for 204, 208 & 281(Note 4)Scale Accuracy 5% FSR (Note 6)SwitchingInstrument quality SPCO (SPDT) (Notes 10 & 11)DifferentialFixed or wideband adjustable. For exactvalues ask for Differential Working170 C for SS bellows;Temperature110 C for PB bellows &316L SS diaphragm.

3 (Note 15)Ambient Temp.( ) 10 C to (+)60 C (Note 14)ConnectionProcess1/4" NPT(F) direct for 201, 203 & " or 1/2" NPT(F) direct for sizes through connection for 208. Fordetails refer ordering " NPT(F)Dual Entry on requestMountingBack panel / wall / fieldConformityGenerally to BS 6134 : 201 in GK Flameproof EnclosureModel 204 in GM Weatherproof EnclosureTable 1 : RANGE CODE & AVAILABILITYT able 2 : SWITCH CODE, RATING & AVAILABILITY (Note 10)ORDERING MATRIXNote : For On-off Differential valuesask for respective Differential tableRANGECODERANGE201 203 204 / 208 281A1K 1 to 0 bar204 0nlyA2K to + bar204 0nlyCOK 1 to + barD4C 5 to 50 mbarD5C to 75 mbarD8D 10 to 100 mbarA3B 5 to 200 mbarA3C 5 to 250 mbarA3K to barA4K to barA5K to 1 barC1K to barC2K to 2 barA6K to 4 barC3K to 6 barA7K1 to 10 barA8K to 16 barA9K2 to 20 barC4K8 to 32 barB1K 10 to 40 barB2K 10 to 60 barB3K 15 to 75 barB4K to barB7K to 7 barP8B to 15 barD3B to 25 mbarX8K 1000 to 0 mmWc204 onlyX9K 200 to +200 mmWc204 onlySWITCHCODE(SPCO)

4 ACRATINGDC RATING IN AMPSAVAILABILITYOF SPCO INMODELSAVAILABILITYOF DPCO INMODELSRESISTIVE INDUCTIVE220V 110V 24V 220V 110V 24V2 5A 250 / 125V 201 & 281201D 15A 250 / 125V , 281204 & 208201, 204 & 2083 15A 250 / , 281204 & 208201, 204 & 208W 15A 250 / 125V , 281204 & 208201, 204 & 2085 5A 250 / 125V , 281204 & 208201, 204 & 208J5A , 281204 & 208201, 204 & 208K1A , 281204 & 208201, 204 & 20891A 115V400 , 281204 & 208201, 204 & , 281204 & 208201, 204 & 208 Codes 2, 3, D & W For General purpose 4 With Gold alloy 5 For General purpose with good DC J Argon sealed micro switch with K Argon sealed micro switch with 9 Hermetically sealed, inert gas filled withSilver alloy G Hermetically sealed, inert gas filled withGold plated DPCO, change switch code to 22 , 33 , etc.

5 , while Not Available Not RecommendedENCLOSUREA luminium pressure die cast weatherproofto IP:67 with Nitrile gasket. GM304 / 316 SS investment cast weatherproofto IP:66 with overall size as style GM foraggressive atmospheres. Fit for offshore. GAAluminium die cast flameproof cumweatherproof. CIMFR approved to ,IIB & IIC of IS/IEC 60079 1:2007 for flameproof-ness and IP:66 for weatherproofness GKMODELThis is the basic pressure switch actuated bya seamless bellows having close fixed non-adjustable switching differential. 201 Same as 201, but with auxiliary mechanismpermitting switching differential adjustment between8 15% min.

6 To 60% max. without disturbingthe set point. 203A variant of series 200, employs twin levers eachoperating a SPCO microswitch actuated by asingle sensor through a unique linkage therebyproviding two independent adjustable setpoints,each with its own setting scale, spring & separation between setpoints must be morethan sum of on-off differentials; or 10% of FSRwhichever is higher. 281 Designed to operate in similar ranges as 201, exceptactuation is by a 316L SS diaphragm whichwithstands overpressures upto 100 bar. Foroverpressure upto 200 bar consult factory. 204 Similar to 204 but with ANSI 1 " #300 RF or 2"#150 or 300 RF flange.

7 Direct actuation by a 316 LSS diaphragm. More responsive than using achemical seal filled system and suitable forViscous media. 208 MATERIALS OF WETTED PARTSM odels 201, 203 & 281316L SS Bellows with 316 SS wetted parts. 02316L SS Bellows with 316 SS wetted parts toNACE MR-01-75. 0 NModels 204 & 208316L SS Diaphragm with 304 SS wetted parts andNitrile O Ring. 04316L SS Diaphragm with 316 SS wetted parts andNitrile O Ring. 02316L SS Bellows with 316 LSS wetted parts andNitrile O Ring. 0L316L SS Diaphragm with 316 SS wetted parts andViton O ring to NACE MR-01-75.

8 0 NMonel Diaphragm with Monel wetted Parts andNitrile O ring. 0 MHastalloy C diaphragm with Hastalloy C wetted partsand Teflon O ring. HH316 LSS Diaphragm with 316 SS wetted parts ofwelded construction. W2 Model 204 only316L SS Diaphragm + 304 SS wetted parts + Teflon O Ring and backup Sheathing for special services. T4316L SS Diaphragm + 316 SS wetted parts + Teflon O Ring and backup Sheathing for special services. T2 Model 208 only316L SS Diaphragm + 304 SS wetted parts withTeflon Insert and Sheathing for Chlorine service. T4 RANGE CODE : Refer Table 1 SWITCH CODE AND RATING : Refer Table 2 ELECTRICAL ENTRY : Refer Table 3 RANGECODEMAX.

9 PR. RATING (in Bar)201, 203 & 281 204 Element Code0202 / 04A1K4100A2K4100 COK4--D4C2100D5C2--D8D2100A3B2--A3C2--A3 K4--A4K4100A5K4--C1K4--C2K4--A6K8100C3K9 --A7K15--A8K25--A9K25--C4K36--B1K50--B2K 80--B3K80--B4K--100B7K--100P8B--100D3B-- 100X8K--100X9K--100 Table 3 : ELECTRICAL ENTRYNOTESD iaphragm chemical seals can be provided as optional extra eitherdirect mounted or remote with capillary and threaded /flangedconnection, duly evacuated and filled with suitable filling liquid. Thisdevice permits the use of pressure switches with bellows element withviscous / aggressive fluids and permits higher process lag will be present, when pressure changes ordering it is important to specify ambient and processtemperatures, setpoint, maximum process pressure, relative elevationbetween connection and switch head.

10 Nature of process mediumand whether reactive to common filling liquids should the diaphragmseal leak into the differentials for Instruments with chemical seal Applya Multiplication factor of for SPCO and for DPCO to valuesgiven in Range Table for GM / GA housings and apply a multiplicationfactor of for SPCO and for DPCO to values of DifferentialTable for GK seals are not available in certain models and rangesand also for instruments with PB CHEMICAL SEALS Damping coil for minimising process pulsations increases instrument s life many times. Blow out protection for weatherproof and flameproof enclosures. Snubbers, pigtail syphons, over-range protectors. Brass / 316 SS double compression cable glands to suit cable OD of 1/2", 15 mm &17 mm.