LHS cable senses temperature variations by continuously monitoring the resistance of specially doped negative temperature coefficient polymeric insulation.

A change in temperature produces a relative change in resistance between the two loops within the sensor cable – as temperature increases, resistance is lowered. This change is monitored by an lhd control unit, which actuates an alarm signal at a pre-determined level. The integrating effect of sensor cable enables it to detect either a hot spot or a lower level of temperature increase over its total length.


  • Flexible in installation
  • Recoverable after operation
  • Monitors precise point of risk
  • Sensitive to small temperature variations
  • Mechanical/environmental protection options


  • Rack storage
  • Escalators
  • Cable trays
  • Conveyors
  • Floating roof tanks
  • Covered car parks