DWYER SA1100 diaphragm operated pressure switch

Description of DWYER SA1100

This results in a minimum deadband as low as 5% of full-scale. Since many applications require higher deadbands, the SA1100 includes a separate adjustment of this when necessary. A pump being used to control liquid level in a tank would be a typical situation where this feature would be important. Both setpoint and deadband adjustments are protected, yet clearly visible behind a clear polycarbonate window and are fully isolated from the electrical components for additional safety. A 7/16″ open-end wrench is the only tool required to change settings. Terminal blocks are provided for switch wiring connections and both internal and external ground screws are included. Standard housing is weatherproof to NEMA standards 1 through 4X and 13; explosion-proof to NEMA 7, Class I, Groups B, C & D; NEMA 9, Class II, Groups E, F & G. Optional construction adds drain to meet NEMA 3R IP54.

Technical specifications of DWYER SA1100

• Wetted Materials: See pressure chamber and diaphragm material in model chart.
• Temperature Limits: -30 to 180°F (-35 to 82°C) standard. ATEX compliant at Ambient Temperature -4 to 167°F (-20 to 75°C); Process Temperature -4 to 167°F (-20 to 75°C).
• Pressure Limit: 1200 psig (82.6 bar).
• Enclosure Rating: *Weatherproof and Explosion-proof. Listed with UL and CSA for Class I, Groups B, C and D; Class II Groups E, F, and G. ATEX Compliant 2813 II 2 G Ex d IIC T6 Gb Process Temperature 75°C. Weatherproof UL Rated Type 4. Meets NEMA 4X (IP66). EC-Type Certificate KEMA 04ATEX2186 X ATEX Standards: EN 60079-0:2009; EN 60079-1:2007 IECEx Certified for Ex d IIC T6 Gb IEC Standards: IEC 60079-0:2007; IEC 60079-1:2007 IECEx Certificate of Conformity: IECEx DEK 11.0095X
• Switch Type: SPDT or DPDT snap switch.
• Electrical Rating: See model chart.
• Electrical Connections: Screw terminal.
• Conduit Connection: 3/4″ female NPT.
• Process Connection: 1/2″ female NPT.
• Mounting Orientation: Within 20° of vertical.
• Set Point Adjustment: Internal 7/16″ hex nuts.
• Weight: 3.5 lb (1.6 kg).
• Deadband: See deadband chart.
• Compliance: ATEX, CE, CSA, UL. *Options that do not have ATEX.

How to buy DWYER SA1100

Model Chart DWYER SA1100

SA1100 PRESSURE SWITCH 

     SA111XE-X-X-OPTS   SA1100 PRESSURE SWITCH 
     SA111XHS-X-X-OPTS  SA1100 PRESSURE SWITCH W/ HERM SEAL SWITCH
     SA111XHG-X-X-OPTS  SA1100 PRESSURE SWITCH W/ HERM SEAL GOLD SWITCH
     
          1ST SYMBOL (1ST X) RANGE
             1     10-150 PSIG 
             2     20-250 PSIG
             3     30-500 PSIG
            
          2ND SYMBOL (2ND X) HOUSING MATERIAL AND SEALS
             A4    AL / BUNA
             S4    SS / BUNA
             A5    AL / FL-CARBON
             S5    SS / FL-CARBON
            
          3RD SYMBOL (3RD X) SWITCH AND PROCESS CONNECTION   
             K1     SPDT / 1/4
             K2     SPDT / 1/2
             L1     2SPDT / 1/4
             L2     2STDT / 1/2
          
          OPTIONS (OPT)
             -AT      ATEX APPROVED
             -DRAIN   DRAIN
             -IEC     IECEX APPROVAL
             -ST      STAINLESS TAG
             -PRESET  FACTORY PRESET OF SWITCH