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DWYER 190/195 two stage top mount displacer type level control

One of our most versatile level controls, the Series 190 can be used on all types of tank or sump level control applications.

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Made in USA. brand DWYER, model 190/195

Fast delivery to Latvia, Estonia and Lithuania. International delivery to Europe, Asia, Africa and other continents available on request
Our warehouse is located in Riga, Latvia.

price by request

Available

Available

Founded in 1931, DWYER manufactures equipment for measurement, conversion and control – pressure, temperature, level, flow.

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Official distributor in Latvia

Time-tested American, European and Asian brands of control and measurent instruments

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Special price list for organisations

We offer a significant discount for trade organisations and manufacturing companies

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Worldwide shipping on request

We take care of all logistics and customs clearance. Fast delivery to Baltic countries

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After-sales service and support

Warranty service and repair, expert assistance in the operation of the instruments

Description of DWYER 190/195

Mercoid® Displacer Controls use displacers that do not float on the surface of liquids, but are suspended on a coil spring. They work on the principle that submerged solids weigh less in liquids, and as the liquid level rises and their weight decreases, the tension on the spring by which they are suspended is decreased. Because they work on a different principle than float type liquid level controls, displacers are not affected by turbulence or pressure, and are excellent for applications with viscous or dirty liquids.

PRODUCT APPLICATIONS

  • Oil refineries
  • Chemical plants
  • Power generating stations
  • Pumping stations
  • Sanitary/waste water facilities
  • Sumps
  • Open or closed tanks and vessels

Technical specifications of DWYER  190/195

  • Service: Compatible liquids.
  • Wetted Materials: Cable, Spring and Stops: 316 SS. Optional Inconel® spring. Displacers: porcelain. Optional 304 SS, 316 SS, or carbon graphite.
  • Temperature Limits: 32 to 200°F (0 to 93.3°C). Higher ratings available.
  • Pressure Limit: 125 psig (8.6 bar). Higher ratings available.
  • Enclosure Rating: General purpose, watertight, explosion-proof or explosion-proof/vapor-proof.
  • Switch Type: Snap switch, hermetically sealed snap switch or mercury switch.
  • Electrical Rating: Snap Switch: 12A @ 120 VAC, 5A @ 240 VAC, 0.5A @ 125 VDC resistive, 0.25A @ 250 VDC resistive. Hermetically Sealed Snap Switch: 5A @ 120 VAC, 5A @ 240 VAC, 5A @ 30 VDC resistive. Mercury Switch: 4A @ 120 VAC/DC, 2A @ 240 VAC/DC. Higher contact ratings available for the mercury switch.
  • Electrical Connections: Screw terminal.
  • Conduit Connection: 3/4″ female NPT.
  • Process Connections: NPT or flange.
  • Mounting Orientation: Vertical.
  • Set Point Adjustment: Adjustable by moving displacers, see dimension chart for minimum and maximum values.
  • Weight: General purpose or watertight enclosure with 4″ 125# cast iron flange approximately 28 lb (12.7 kg); Explosion-proof or explosion-proof/vapor-proof approximately 32 lb (14.5 kg).
  • Agency Approvals: UL, none on HM switch.
  • Specific Gravity: Standard is 1.0. Specify when ordering by replacing 1.0 in model number with specific gravity setting desired. Settable range is 0.5 to 1.2.
  • Cable Length: Up to 50 ft.

Model Chart DWYER 190/195

195-X-X-X-X-X-X-X-OPT    MERCOID SERIES 195 LIQUID LEVEL CONTROL
                        A195-X-X-X-X-X-X-X-OPT   MERCOID SERIES 195 LIQUID LEVEL CONTROL

     1ST SYMBOL (1ST X) OPERATION
        4       OPERATION 4
        6       OPERATION 6
        7       OPERATION 7
        8       OPERATION 8
    
     2ND SYMBOL (2ND X) ENCLOSURE
        G       GENERAL PURPOSE NEMA 1
        WT      WATERTIGHT NEMA-4, 4X
        E       EP CL I GRP B,C,D CL II GRP E,F,G NEMA-7, 9
        EV      EP VP CL I GRP B,C,D CL II GRP E,F,G NEMA-7, 9
    
     3RD SYMBOL (3RD X) CIRCUITS
        4806-06
        4806-10
        4810-10
        4813-13
        4813-14
        4814-13
        4814-14
        4815-15
        4820-20
        4821-21
        4820-21
        4821-20
        7806-06   7806HM-06HM
        7810-06
        7810-10   7810HM-10HM 
        9806-06
        9810-10
   
     4TH SYMBOL (4TH X) DISPLACER TYPE
        P       PORCELAIN              (ONLY WITH A195)
        S       316SS
        S304    304SS
        K       KARBATE                  (OBS ECR37750)
        I       INTRF DISPLACER 3-1/2 DIA X 10
	   
     5TH SYMBOL (5TH X) CABLE LENGTH
        A       10 FT
        B       15 FT
        C       20 FT
        D       25 FT
        E       30 FT
        F       40 FT
        G       50 FT
    
     6TH SYMBOL (6TH X) SPECIFIC GRAVITY
        ?.?     CUSTOMER SPECIFIED SPECIFIC GRAVITY
      
     7TH SYMBOL (7TH X) FLANGE
        00      3" NPT CONNECTION NO FLANGE
        0       3/4" SCREW CONNECTION NO FLANGE
        6       3" 150# RF CARBON STEEL
        7       4" 150# RF CARBON STEEL
        8       5" 150# RF CARBON STEEL
        9       6" 150# RF CARBON STEEL
       10       8" 150# RF CARBON STEEL
       11       3" 300# RF CARBON STEEL
       12       4" 300# RF CARBON STEEL
       13       5" 300# RF CARBON STEEL
       14       6" 300# RF CARBON STEEL
       15       8" 300# RF CARBON STEEL
        6S      3" 150# RF 316 STAINLESS STEEL
        7S      4" 150# RF 316 STAINLESS STEEL
        8S      5" 150# RF 316 STAINLESS STEEL
        9S      6" 150# RF 316 STAINLESS STEEL
       10S      8" 150# RF 316 STAINLESS STEEL
       11S      3" 300# RF 316 STAINLESS STEEL
       12S      4" 300# RF 316 STAINLESS STEEL
       13S      5" 300# RF 316 STAINLESS STEEL
       14S      6" 300# RF 316 STAINLESS STEEL
       15S      8" 300# RF 316 STAINLESS STEEL
    
     OPTIONS (OPT)
        -INC     INCONEL SPRING               (316SST IS STD) 
        -STW     SS TAG WIRED
        -01      BREATHER ONLY                (E-HOUSING ONLY)
        -02      DRAIN ONLY                   (E-HOUSING ONLY)
        -12      BREATHER AND DRAIN           (E-HOUSING ONLY)
        -23720   FUNGUS PROOFING SPEC 23720

     NOTES
     1. CAST IRON FLANGES OBSOLETED 1-1-2018 PER ECR-041970
        1       3" 125# CAST IRON  (AA190, BB190, A195 ONLY)
        2       4" 125# CAST IRON
        3       5" 125# CAST IRON
        4       6" 125# CAST IRON
        5       8" 125# CAST IRON
       16       3" 250# RF CAST IRON
       17       4" 250# RF CAST IRON
       18       5" 250# RF CAST IRON
       19       6" 250# RF CAST IRON
       20       8" 250# RF CAST IRON
     2. THE FOLLOWING OPTION WAS OBSOLETED PER ECR-046187
        -R1      MANUAL RESET LOWER STAGE

User Guide and Instruction manual for DWYER 190/195

You can request the necessary certificates, documentation, instructions and user guide for DWYER 190/195 using the special form.

You can buy DWYER 190/195 in Latvia at a favourable price in «OLIL SIA» by leaving a request on the website, by phone +371 672 70580 or by email . DWYER 190/195 price are subject to change depending on exchange rates. We deliver instruments by transport companies in Latvia, Estonia and Lithuania. Worldwide shipping to Europe, Asia, Africa, North and South America available on request.