117 Series Models 520 to 525 Pressure Switch

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

Approved for Division 2, Zone 2 hazardous and corrosive atmospheres, and with optional Zone 0 intrinsic safety compliance, the 117 Series can be used to measure vacuum, pressure, differential pressure, or temperature in a variety of applications.

The rugged, one piece enclosure features a slanted cover for wiring accessibility to the enclosed terminal block that is wired to either a SPDT or DPDT hermetically sealed microswitch. All-welded, stainless steel pressure connections and sensors provide superior corrosion resistance - NACE compliant - and fire-safe protection within the harshest environments.

The 117 Series is an ideal choice for the most demanding applications; typically steel and aluminum mills, chemical and petrochemical plants, pulp and paper mills, wastewater treatment plants, midstream and downstream oil & gas, and pharmaceutical plants.
Features
  • Epoxy Coated Type 4X Enclosure and Stainless Steel component parts
  • Terminal Block Wiring
  • Tamper-Resistant Set Point “Lock”
  • Approved for Division 2, Zone 2 hazardous locations
  • Optional ATEX or GOST intrinsic safety compliance for Zone 0
  • Welded Stainless Steel diaphragms meet NACE MR-0175 standard
  • Optional sensor material for corrosive media
  • Ultra-low vacuum and pressure ranges
  • Polished Stainless Steel flush mount sensors

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

  • Chemical & Petrochemical
  • Midstream & Downstream Oil & Gas
  • Pharmaceutical Plants
  • Pulp & Paper Mills
  • Steel & Aluminum Mills
  • Wastewater Treatment Plants

Approvals & Certifications

  • ISO 9001

Approvals & Certifications

  • ATEX Directive (94/9/EC) II 1 G EEx ia IIC T6 Ga Tamb: -50° to 60° C (-58° to 140° F)
  • CE
  • CRN
  • CSA C22.2 No. 14 & 213 - File # E40857
  • GOST-R 51330.0, 51330.1, 51330.10 & 51330.14
  • Low Voltage Directive (LVD) 73/23/EC & 93/68/EEC
  • PED: 97/23/EC
  • UL (C,US) 508 & 1604, Class I, Div. 2, Grade A, B, C, D, Class II, Div. 2, Group F, G, Class III

Conduit Connection

  • 1/2” NPT Female

Deadband

  • Inches WC: 0.4 to 32
  • psi: 0.014 to 1.155 (kPa: 0.1 to 7.96, Mbar: 1 to 79.6)
  • Temperature Deadband: Typically 4 % of Range Under Laboratory Conditions (21.11° C (70° F) Ambient Circulating Bath at Rate of 0.5° F Per Minute Change)

Diaphragm Material

  • 316L Stainless Steel
  • Buna-N
  • Kapton
  • Teflon
  • Viton

Electrical Connectors

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

Electrical Contacts

  • Normally Closed
  • Normally Open
  • Switch Contacts Gold Flashed

Electrical Rating

  • 0.5 A at 125 Vdc
  • 1 A at 48 Vdc
  • 11 A at 125/250 Vac Resistive
  • 5 A at 28 Vdc

Enclosure Finish

  • Epoxy Powder-Coated

Enclosure, Body Material

  • Gasketed Die Cast Aluminum

Environmental Protection

  • Intrinsically Safe
  • IP66
  • NEMA 4X

Fill Material

  • Non-Toxic Oil Filled

Mounting

  • Pipe
  • Surface

NACE & NIST

  • NACE MR-0175

Name Plate, Tag Material

  • Anodized Aluminum
  • Stainless Steel, Paper ID Tag & Wire Attachment

NPT Connection

  • 1/2” NPT Female

O-Ring Material

  • Buna-N
  • Viton

Orifice Size

  • 0.72” (18.28 mm) for Clean-Out Purposes

Overpressure & Static Pressure Limits

  • Overpressure - psi: 200 (kPa: 1,379, bar: 13.8)

Pressure Type

  • Gauge

Process Connection Material

  • 316L Stainless Steel
  • 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: -300 to 250
  • kPa: -74.5 to 62.1
  • mbar: -746.7 to 622.3
  • psi: -10.8 to 9

Set Point - Increasing

  • Inches WC: -300 to 250
  • kPa: -74.5 to 62.1
  • mbar: -746.7 to 622.3
  • psi: -10.8 to 9

Shock

  • Set Point Repeats after 15 G, 10 millisecond Duration

Storage Temperature

  • -54° to 71° C (-65° to 160° F)

Switch Type

  • DPDT
  • One SPDT Hermetically Sealed Snap-Action Switch

System Pressure

  • bar: 13.79
  • kPa: 1,379
  • psi: 200

Vibration

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

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