Electronic Pressure & Temperature Switches
One Series

One Series Electronic Pressure & Temperature Switches are designed for critical alarm and shutdown applications in harsh, hazardous environments. A local indicator and remote I AM WORKING™ status signal provide continuous notification that the device is powered and operating. It also indicates if the switch has tripped, assuring the operator that the switch will perform when called upon.

Low level DC output(s) may be used to trigger control circuits or as a discrete input to a process computer. The switch output may be configured by the user in the field without re-wiring.

A 15 Amp 280 VAC solid-state relay provides local high level switching for actuation or shutdown of your system. An optional 4 to 20 mA analog output allows remote monitoring and trending of the process variable. The self- contained, compact package allows for easy retrofit of traditional switches or transmitters.

A 115 VAC input/output option enables the One Series to be powered by an AC source and switch AC loads. Designed for Division 2 hazardous locations and harsh environmental conditions, this rugged design will stand up to your most demanding applications.

• 18-30 VDC, 115 VAC, or 230 VAC operation and switching
  
• Real time local display of process variable (digital and bar graph)
  
• All solid-state; no moving parts
  
• Set point and deadband adjustable up to the full operating range
  
• Solid-state relay provides extended switch life with no contact wear
  
• Pipe or surface mounting
  
• Approved for Division 2 locations; NEMA 4X
  
• Optional 4 to 20 mA analog output
  
• 3 year warranty
  
• Suitable for use in emergency shutdown systems per ISA S84.01
  

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