NTC-XX-HLS: Non-Isolated High/Low Selector     specsheet 

  • DIN-Rail Mount (small size)
  • Industry Standard Input: 4-20 mA, 1-5 VDC, and more....
  • 2 to 4 Inputs can be easily field configured for High or Low Input Selection
  • Microprocessor Controlled for High Accuracy and Flexibility
  • Easy Field Calibration (Typ. calibration time < 2 min. using handheld meter only)
  • Two Wire Supply for Two Wire Transmitters
  • Power: 24 VDC
  • High Noise Rejection
  • CSA and NRTL Approved

The NTC-XX-HLS is a microprocessor controlled High/Low Selector. It is easily field configurable to up to 4 inputs. The unit can be set as High selector in which case the output will read the highest of all active inputs. Id set as a Low selector, the output will read the lowest of all active inputs.

This flexibility combined with easy field calibration allows for the fine tuning of a process of site with little effort. All that is required to change the calibration settings is a voltmeter and a small screwdriver.


  • Accuracy/Linearity: +/- 0.3% max., +/- 0.1% typ.
  • Operating Temperature: -40 Deg. C. to +50 Deg. C.
  • Temperature Affects: +/- 0.5% max., 0.2% typ. (for 40 Deg. C. change)