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  Explosion-Proof Electronic Pressure Switches & Electronic Temperature Switches

One Series Ex d

One Series
One Series Ex d shown with gauge pressure sensor
 

One Series Electronic Pressure Switch and Electronic Temperature Switch For Division 1 (Zone 1) Areas


Product Line Overview

The One Series electronic pressure switches and electronic temperature switch set the standard for solid-state digital process monitoring. With a fully adjustable set point & deadband and 0.1% repeatability, the One Series is suitable for a wide variety of harsh and hazardous applications. Available in Type 4X enclosures for explosion-proof and non-incendive area classifications, these electronic switches are designed to provide protection for plants, capital equipment and people.

Each One Series model incorporates intelligent self-diagnostics and can report detected faults before they become major safety issues. Plug Port Detection protects against sensor clogging. Nuisance trip filtering reduces false and spurious signals. The ability to capture pressure spikes and valleys provides process information to aid in the commissioning and debugging process.

Consider a highly repeatable and fully adjustable deadband switch for applications where high cycle rate is present. With no moving parts, the One Series digital solid-sate design is uniquely suited for controlling pump and compressor stop/start cycles. And with its digital process display and available 4-20 mA output, the One Series can provide the functions of a switch, gauge and a transmitter with only one connection to the process

For plant upgrades, the One Series is the most cost-effective choice. 2-Wire models utilize existing plant wiring. Loop-powered models provide high-capacity switching and a 4-20 mA output. External power supply models can handle currents up to 10 amperes or 2 fully-independent set points and deadbands and the 4-20 mA output.

Adjustability, accuracy, versatility, intelligence – see what the One Series can do in your critical application.

  • Digital process and status display
  • Fully adjustable set point and deadband
  • Local and remote self-diagnostic reporting
  • Agency certifications for hazardous locations
    • cULus, IECEx, GOST, CE and ATEX
    • Class I, Division 1 & 2 models available
  • Safety system enabled –
    • SIL Verification and FMEDA reports available
  • 3 ways to power the control –
    • 2-wire discrete input power
    • Loop-powered analog input
    • External power supply
  • Multiple sensor types and ranges –
    • Gage pressure up to 6000 psi (413,7 bar)
    • Differential pressure up to 200 psid (13,8 bar d)
    • RTD temperature from -300 to 1,000°F (-184 to 538°C)

 
 
 

One Series Ex d 2X
Explosion-Proof Electronic Pressure Switch and Electronic Temperature Switch

United Electric Controls - One Series
One Series Ex d shown with gauge pressure sensor
Product Overview
  • Explosion-proof hazardous location approvals for gas groups A, B, C & D
  • 2-wire discrete input powered or loop-powered; no additional wiring is required
  • Drops in place of mechanical switches
    • Connects directly to PLC or DCS inputs
    • Uses only 2 wires for power AND switching
    • 24 VDC and 115 VAC input compatible
    • Easy and cost-effective plant upgrades
    • Analog trending output available on 2XLP Models
  • Provides alarm and shutdown for critical safety applications
    • FMEDA and SIL Verification reports available
  • Class I, Division 1 & 2 area classifications
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One Series Ex d 4X
Explosion-Proof Differential Pressure Switch and Electronic Temperature


United Electric Controls - One Series
One Series Ex d shown with Differential Pressure Sensor
Product Overview
  • Explosion-proof hazardous location approvals for gas groups A, B, C & D
  • 4-wire external 115 VAC powered
  • Provides local monitoring and switching; no PLC required
    • Connects directly to the MCC for motor and compressor control
    • Switches 10 amperes at up to 280 VAC
    • Replaces a switch and a gauge
    • Solid-state relay can be placed in series or parallel with other switches
  • Provides alarm and shutdown for critical safety applications
    • FMEDA and SIL Verification reports available
  • Class I, Division 1 & 2 area classifications
One Series Bulletin
One Series 4X Installation & Maintenance


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One Series Ex d 8X
Explosion-Proof Electronic Pressure Switch and Electronic Temperature 

United Electric Controls - One Series Ex 4x DP 
One Series Ex d shown with local RTD temperature sensor

 

Product Overview    

  • Explosion-proof hazardous location approvals for gas groups A, B, C & D
  • Powered by 24 VDC external power supply
  • The most versatile One Series:
    • Solid-state relays rated for up to 280 VAC and VDC; PLC compatible
    • Two independent set points and deadbands
    • Field-scalable 4-20 mA output for trending and predictive maintenance
    • Replaces 2 switches, a gauge and a transmitter
  • Provides alarm and shutdown for critical safety applications
    • FMEDA and SIL Verification reports available
  • Class I, Division 1 & 2 area classifications

One Series Bulletin
>One Series 8X Installation & Maintenance

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ONE SERIES 2-WIRE ELECTRONIC PRESSURE SWITCH AND ELECTRONIC TEMPERATURE SWITCH
United Electric Controls - One Series
One Series shown with Differential Pressure Sensor

Product Overview

  • 2-wire connection to a PLC, DCS or Relay Coil; NO ADDITIONAL WIRING
    REQUIRED!
  • 24 VDC, 115 VAC or Loop-Powered models are now available
  • Field scalable 4-20mA models available (2WLP)
  • Field adjustable set point and deadband, covering 100% of sensor range
  • Temperature, Gauge Pressure and Differential Pressure sensors available
    with all-stainless steel wetted parts
  • Advanced programmable features including MAX/MIN capture, nuisance trip
    filtering, clogged sensor detection and manual reset
  • I Am Working® (IAW) self-diagnostics reported locally (on the switch
    display) and remotely (in the control room)
  • Class I Division 1 Intrinsically Safe (2W2D models only) and Division 2
    Non-incendive all models)

One Series 2-Wire Product Specification
One Series 2-Wire Customer Drawings
>One Series 2-Wire Installation & Maintenance





ONE SERIES 4W
10 AMP ELECTRONIC PRESSURE SWITCH & ELECTRONIC TEMPERATURE SWITCH



One Series 4-Wire w/10 A, 280 VAC Relay Output
One Series shown with remote RTD temperature sensor

Product Overview

  • Accepts 90-130 VAC power; provides high-capacity local switching
  • Solid-state relay switch output rating: 10 A @ 24-280 VAC
  • Fully adjustable Set Point and Deadband; large LCD process display
  • Type 4X epoxy-coated aluminum enclosure, polycarbonate faceplate
  • Sensor ranges: Gage Pressure 0-4,500 PSI (310,3 bar); Differential Pressure
    0-200 PSID (13,8 bar); Temperature -300 to 1000ºF (538ºC)
  • Advanced features include IAW self diagnostics, min/max memory,
    plugged port detection, switch delay and manual reset
  • UL listed, Class I, Division 2 Groups A, B, C & D (Non-incendive)

One Series 4W Product Specification
One Series 4W Customer Drawings
One Series 4W Installation & Maintenance


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ONE SERIES 8W
DUAL SET POINT ELECTRONIC SWITCH WITH 4-20mA OUTPUT


One series shown with dual conduit opening and local RTD temperature sensor
 
Product Overview
  • All solid-state microprocessor controlled design
  • Dual solid-state relay outputs provide independent SPST or SPDT switch action
  • Independently programmable set point, deadband, and operating mode for each
    switch output
  • Local LCD digital display of the process variable, indication of trip points,
    and access to programmed parameters
  • Patented I Am Working® (IAW) self diagnostics
  • Field-scalable 4-20 mA analog output for process trending
  • Class I, Division 2 rated
  • Many switch output and sensor options
 
One Series 8W Product Specification
One Series 8W Customer Drawings