100 Series Models 540 to 543 Pressure Switch

Brand: United Electric Controls Ltd
Does not ship to Virginia, United States

SIL-Certified Switch for Pressure, Vacuum, Differential Pressure & Temperature Applications.

The United Electric 100 Series is a cost-effective, SIL-certified switch for pressure, vacuum, differential pressure, and temperature applications in process plants and OEM equipment. The rugged, one-piece enclosure features a slanted cover for wiring accessibility.

A wide variety of microswitch and process-connection options make this versatile, SIL-certified switch ideal for applications requiring a rugged weather-proof device.

Typical applications that utilize the 100 Series are heat tracing, freeze protection, processing equipment (pumps, compressors), inputs for annunciator panels, and fire suppression systems.
Features
  • SIL-certified switch (SIL2)
  • Rugged, NEMA 4X, epoxy coated enclosure
  • SPDT or DPDT switch output
  • Easy access wiring
  • Single switch output
  • Internal reference scale and adjustable deadband available
  • Adjustable ranges: 30 “Hg Vac to 5000 psi
    • -1 bar to 344 bar
    • 0.2 “wcd to 500 psid
    • 0,5 mbar to 34,5 bar
    • -120° F to 650° F
    • -85° C to 340° C
  • Approvals: UL, CSA, CE, EAC (Russia), Inmetro (Brazil)

Specifications

Adjustment Type

  • Captive Clamp Screws
  • Factory Set (Pre-Set)
  • Set Point Adjustment

Ambient Temperature Range

  • -18° to 71° C (0° to 160° F), Set Point Typically Shifts less than 1 % of Range for a 28° C (50° F) Ambient Temperature Change

Applications

  • Fire Suppression System
  • Freeze Protection
  • Heat Tracing
  • Inputs for Annunciator Panel
  • OEM Equipment
  • Process Plants
  • Processing Equipment (Pumps, Compressors)

Approvals & Certifications

  • ISO 9001

Approvals & Certifications

  • ATEX Directive (94/9/EC) II 1 G EEx ia IIC T6 Tamb: -50° to 60° C (-58° to 140° F)
  • CE
  • CRN
  • CSA C22.2 No. 14, File # E42272
  • GOST-R 51330.0, 51330.1, 51330.10 & 51330.14
  • Low Voltage Directive (LVD) 73/23/EC & 93/68/EEC
  • PCT 0ExiaIICT6 Tamb: -50° to 60° C (-58° to 140° F)
  • PED: 97/23/EC
  • UL (C,US) 508

Conduit Connection

  • 1/2” NPT Female

Deadband

  • Inches WC: 0.05 to 8
  • psi: 0.02 to 0.5 (kPa: 0.1 to 3.4, Mbar: 1.4 to 34.5)

Diaphragm Material

  • Buna-N

Electrical Connectors

  • 1/2” NPT Female
  • 7/8” Diameter Knockout
  • 7/8” Hole to 1/2” NPT Female Watertight Conduit Fitting
  • Common

Electrical Contacts

  • Gold
  • Normally Closed
  • Normally Open

Electrical Rating

  • 0.5 A Resistive, 0.03 A Inductive at 125 Vdc
  • 10 A at 125 Vdc Resistive
  • 2 A Resistive, 1 A Inductive at 24-30 Vdc
  • 20 A, 125/250/480 Vac Resistive
  • 30 A, 125/250/277 Vac Resistive
  • Adjustable Deadband, External Manual Reset, 15 A at 125/250/480 Vac Resistive
  • Close Deadband, 5 A at 125/250 Vac Resistive
  • High Ambient, Vapor Sealed Switch, 15 A 125/250 Vac Resistive

Enclosure Finish

  • Epoxy Powder-Coated

Enclosure, Body Material

  • Gasketed Die Cast Aluminum

Environmental Protection

  • Intrinsically Safe
  • IP66
  • NEMA 4X

Indication

  • Red Status Light

Mounting

  • Pipe
  • Surface

Name Plate, Tag Material

  • Stainless Steel

NPT Connection

  • 1/8” NPT Female

Operating Pressure

  • psi: -14.7 to 200 (kPa: -101.4 to 1,379, bar: -1 to 13.8)

Pressure Type

  • Differential

Process Connection Material

  • Epoxy Coated Aluminum

Proof Pressure

  • psi: 400 (kPa: 2,758, bar: 27.6)

Repeatability

  • Set Point Repeatability: ± 1 % of Adjustable Range

Service

  • Oxygen Service Cleaning, Alcohol Cleaning to Remove Residue from the Process Connection

Set Point - Decreasing

  • Inches WC: 0.2 to 200
  • kPa: 0.05 to 49.78
  • mbar: 0.5 to 497.8
  • psid: 0 to 7.22

Set Point - Increasing

  • Inches WC: 0.2 to 200
  • kPa: 0.05 to 49.78
  • mbar: 0.5 to 497.8
  • psid: 0 to 7.22

Shock

  • Set Point Repeats after 15 G, 10 millisecond Duration

Storage Temperature

  • -54° to 71° C (-65° to 160° F)

Switch Type

  • DPDT
  • SPDT

System Pressure

  • bar: -1 to 13.8
  • kPa: -101.4 to 1,379
  • psi: -14.7 to 200

Vibration

  • Set Point Repeats after 2.5 G, 5 to 500 Hz

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