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TN PNF
The PNF is a non-contacting, non-invasive point level switch for high or low level indication. It is highly reliable, rugged and provides cost-effective on-off control of circuits. It is mounted externally on tanks, bins, hoppers, pipes, chutes or other vessels to sense the level of liquids, slurries, and solids
The TN PNF provides non-contacting Point Level indication in different applications.  The TN PNF consists of two components:  an energy source in a steel-jacketed housing and the detector/electronics.  It operates on the principle of gamma ray attenuation.  The gamma energy source emits a narrow beam of energy which passes through the vessel walls to the detector.  When process material is in the beam path, the energy is attenuated and not all of it reaches the detector.  If the process material is not in the beam path, the detector receives and unattenuated amount of energy.  The amount of energy at the detector is "counted" by the electronics.  As the count rate falls below (for high level) or goes above (for low level) a predetermined reference, the output relay is energized.

Features and Benefits:

  • Non-contacting, non-invasive high or level indication                   
  • Highly reliable and rugged                   
  • Digital Technology                   
  • Simple installation and easy setup                   
  • Two year warranty                   
  • FM approved for hazardous areas                   
  • Unaffected by process variables such as presure, temperature, viscosity or density 
  • FMRC and CSA approved
Field Service Contract - Nuclear, Level and Density Instruments