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Excela electronic process thermostat/pressure switch

The ONE Series safety transmitter has been designed by UNITED ELECTRIC CONTROLS to simplify installation, increase safety and eliminate false alarms. Redundant self-diagnosis “IAW” of the equipment detects the open/closed state and faulty sensor.

The analog output of the transmitter provides the process variable and fault detected information. It has digital outputs to provide an alarm of equipment failure to execute an emergency stop.

The instrument is password-protected to prevent unwanted parameter changes, eliminating the risk of tampering, and memorizes internally the maximum and minimum values reached.

The LED backlighting incorporated in the equipment improves the visualization of process variables, parameters and status in low light locations.


  • Liquid crystal display
  • Process condition indicator, LED, multicolor
  • Internal diagnostics allowing devices to self-monitor
  • Internal diagnostics allowing devices to monitor themselves
  • Operating temperature range: -40°C to 71°C


  • Reliability, robustness, qualified for outdoor operations
  • Easy maintenance
  • Minimal investment: two-wire cabling allows for easy integration of the equipment
  • Simple programming, easy configuration of the process parameters
  • Easy to use
  • Simple programming, configuration of the process parameters
  • Visual indication with LED display and red/green indicator lights on the alarm status


  • Generally pressure and temperature alarming for production processes in unclassified areas
  • Control of local process variables in a feed plant
  • Process alarm in pneumatic or hydraulic circuits
  • Pneumatic or hydraulic circuits
  • Temperature alarming in chemical processes
  • Temperature alarming in chemical processes
  • Protection of machinery with hydraulic lubrication circuits


Input power Digital input from PLC, DCS or I/O cards, 8 to 50 VDC at up to 0.1 Amp
Accuracy 0.5% of the full range, at room temperature
Repeatability 0.1 % of total range interval
Ambient operating temperature range from -40°C to 71°C (-40°F to 160°F)
Enclosure Type 4X / IP66 certified aluminum alloy epoxy coated 360°.
Electrical conduit With 1/2″ NPT (female) 304 stainless steel gasket on the left side and interchangeable plug on the right side.
interchangeable plug on the right side
Display 4-digit x 12.7 mm (0.5″) LCD provides the following information: Units of measure
Switch status – Green and red flashing status LED light
Adjustment points (increase and decrease) Fully programmable over the entire sensor range
Pressure gauge sensors 316L stainless steel wetted parts, welded diaphragm, process connection
1/2″ NPT (female)
Adjustable ranges: -1 bar to 414 bar (full vacuum to 6000 psi)
Differential pressure 316L stainless steel wetted parts, welded diaphragm, process connections
1/4″ NPT (male)
Adjustable ranges: 0 to 13.8 bar (0 to 200 psid)
Temperature 316L stainless steel, 6.4 mm (0.25″) sheath with 4-wire platinum RTD element, 100 Ohms
4-wire, 100 Ohm
Adjustable ranges: -184°C to 538°C (-300˚F to 1000˚F)

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    En cumplimiento de la LOPD 15/1999 de 13 de Diciembre, le informamos que sus datos podrían pasar a formar parte de un fichero propiedad de la empresa Gometrics S.L. Usted tiene derecho de acceso, rectificación, oposición y cancelación que puede ejercer mediante escrito a la dirección anteriormente indicada. Por la presente autoriza expresamente a la compañía a que le remita información sobre sus servicios a la dirección de correo electrónico indicada en el formulario. La información ofrecida en esta página web es meramente orientativa y no es, en ningún caso, vinculante.