United Electric Differential Pressure Switch, 12 Series Sensor Type K1-K3
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12 Series Sensor Type K1-K3 Pressure Switch

Brand: United Electric Controls Ltd
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12 Series hazardous location switches are ideal for operation in tough applications where space is at a premium. A snap-action Belleville spring assembly is used in most models to provide vibration resistance and prolonged switch life. The 316 stainless steel enclosure and hermetically sealed switch provide rugged protection from the environment.

Approved for use in hazardous locations worldwide, the 12 Series is installed within applications ranging from offshore oil rigs to rotating equipment, and more.
Features
  • UL, cUL, ATEX and IECEx approved for Div. 1 or Zone 1 hazardous locations; CE compliant
  • Dual seal compliant to ANSI/ISA 12.27.01 & NEC 501.17
  • Pressure switch wetted parts are NACE MR-0175 compliant
  • Mounting bracket available for retrofit applications

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Specifications

Brand

Adjustment Type

  • External Ground Screw
  • Factory Set (Pre-Set)

Ambient Temperature Range

  • -50° to 80° C (-58° to 176° F) - Set Point Shifts less than 1 % of Range for a 28° C (50° F) Ambient Temperature Change

Applications

  • Chemical Plants & Refineries
  • Instrument Panels
  • Offshore Platforms
  • Rotating Equipment

Approvals & Certifications

  • ISO 9001

Approvals & Certifications

  • ABNT NBR IEC 60079-0, 60079-1, 60079-31 Certificate # UL-BR 15.0174X
  • ATEX Directive 94/9/EC II 1 G Ex ia IIC T6 Ga Tamb: -50° to 60° C (-58° to 140° F) UL International Demko A/S (N.B.# 0539) Certificate # Demko 11-ATEX-1105261X EN 60079-0, 60079-11, 60079-26
  • ATEX Directive 94/9/EC II 2 G Ex d IIC T6 Gb II 2 D Ex Tb IIIC T85° C (185° F) Db Tamb: -50° to 80° C (-58° to 176° F) UL International Demko A/S (N.B.# 0539) Certificate # Demko 08-ATEX-0717128X EN 60079-0, 60079-1, 60079-31
  • CE
  • CRN
  • CSA C22.2 No. 14, 25 & 30 - File # E40857
  • Dual Seal Certified to ANSI/ISA 12.27.01 (Meets CEC & NEC Secondary Seal Requirements) Standard on Straight
  • EAC Flameproof Junction Box, Pre-Wired
  • GOST-R 0Ex ia IIC T6 Ga x Tamb: -50° to 60° C (-58° to 140° F)
  • GOST-R 1Ex d IIC T6 Gb x Tamb: -50° to 80° C (-58° to 176° F) NANIO CCVE Certification Center Certificate # RU C-US.ГБ05.B.01185 ГOCT P MЭК 60079-0, 60079-11, 60079-1, 60079-31, ГOCT 31610.26, IEC 60079-26
  • GOST-U 1 ExdIICT6X Tamb: -56° to 85° C (-68.8° to 185° F) SVODOTSTVO #719 by DVSTS VE (TCCExEE)
  • IEC Ex Certified Ex d IIC T6 Gb Ex Tb IIIC T85° C (185° F) Db IP66 Tamb. = -50° to 80° C (-58° to 176° F) IEC 60079-0, 60079-1, 60079-31 IEC 60079-0, 60079-1, 60079-31 Certificate # IECEx UL 14.0072X
  • IEC Ex ia IIC T6 Ga Tamb. = -50° ≤ Tamb ≤ 60° C IEC 60079-0, 60079-11 Certificate # IECEx UL 14.0075X
  • INMETRO Ex d IIC T6 Gb Ex Tb IIIC T85° C Db IP66 -50° C ≤ Tamb ≤ 80° C
  • Low Voltage Directive (LVD) 2006/95/E
  • PESO Ex ia IIC T6 Ga Tamb: -50° to 60° C (-58° to 140° F) UL International Demko A/S (N.B.# 0539) Certificate # P305465 / 1 EN 60079-0, 60079-11, 60079-26
  • PED: 97/23/E
  • UL (C,US) 508 & 1203, Class I, Div. 1 & 2, Groups A, B, C, D Class II, Div. 1 & 2, Groups E, F, G Class III Class I, Zone 1, Group IIC Enclosure Typical 4X

Conduit Connection

  • 1/2” NPT Male
  • M20

Cover Type

  • Cover Lock

Deadband

  • Inches WC: 0.2 to 5 - SPDT Switch (Single Pole Double Throw)
  • Inches WC: 0.2 to 8 - DPDT Switch (Double Pole Double Throw)
  • mbar: 0.5 to 12.4
  • mbar: 0.5 to 19.9

Diaphragm Material

  • Buna-N

Electrical Connectors

  • 1/2” NPT Male with 72” Leadwires
  • 4-Terminal DIN Connector (DIN 43650 Form A)
  • Common
  • Junction Box
  • M20 Metric Threads, 72” Leads

Electrical Contacts

  • Bifurcated Gold Contacts
  • Normally Closed
  • Normally Open
  • Silver

Electrical Rating

  • 1 A at 125 Vac, 1 A Resistive & 0.5 A Inductive at 28 Vdc
  • 5 A at 125/250 Vac, 5 A Resistive & 3 A Inductive at 28 Vdc

Enclosure, Body Material

  • 316 Stainless Steel
  • Epoxy Coated Aluminum

Environmental Protection

  • Flameproof
  • Intrinsically Safe
  • IP66
  • Typical 4X
  • Typical 7
  • Typical 9
  • Vibration-Proof

Mounting

  • 304 Stainless Steel Bracket
  • Bracket
  • Stainless Steel

NACE & NIST

  • NACE MR-0175 Compliant

Name Plate, Tag Material

  • Tag: Paper, Stainless Steel ID Tag & Wire Attachment, Text Limited to 2 Lines of 25-Characters Each, Max.*

NPT Connection

  • 1/8” NPT Female

Operating Pressure

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

Process Connection Material

  • 316 Stainless Steel

Process Temperature

  • -18° to 82° C (0° to 180° F)
  • -7° to 121° C (20° to 250° F) for Viton Sensor

Proof Pressure

  • psi: 400 (kPa: 2,758, bar: 27.6)

Repeatability

  • Set Point Repeatability: ± 1 % of Adjustable Range

Service

  • Oxygen Service Cleaned in Accordance with ASTM G93, Verification Typical 1, Tests 1 through 3

Set Point - Decreasing

  • bar: 0.1 to 10.3
  • Inches WC: 0.7 to 150
  • kPa: 0.174 to 37.36
  • psi: 0.025 to 5.419

Set Point - Increasing

  • bar: 0.1 to 10.3
  • Inches WC: 0.7 to 150
  • kPa: 0.174 to 37.36
  • psi: 0.025 to 5.419

Shock

  • Set Point Repeats after 75 G, 10 millisecond Duration

Storage Temperature

  • -50° to 80° C (-58° to 176° F)

Switch Type

  • One SPDT, Hermetically Sealed
  • Two SPDT for DPDT Action, Hermetically Sealed

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, 10 to 2000 Hz

Documentation

Catalogs

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