Hermetically Sealed

HIR-750 Series 4-20 mA LVDT

The NewTek HIR Series sensors are rugged hermetically sealed 4-20 mA LVDTs with excellent linearity, high resolution, and superior repeatability.? These sensors are constructed of 3/4 inch diameter stainless steel and manufactured for general industrial use.  Electrical connection is made through a radially mounted connector, resulting in a reduced housing length.  Designed for a wide range of position measurement applications, they are available in ranges of 0.1 inches (2.54mm) to 20 inches (500mm).  In addition to being sealed to IP-68, the HIR Series windings are potted inside the housing with a 2 component epoxy, providing excellent protection against hostile environments.

Input Voltage:                      11 – 28 VDC (24 VDC nom.)
Linearity:                              < ± 0.25% Full Range Max (0.1% Optional)
Hysteresis:                           <0.01% of Full Range Typical
Repeatability:                      <0.01% of Full Range Typical

Operating Temperature:          -15° F to 185° F (-25° C to 85° C)
Thermal Coefficient:                 <-0.01%/°F (< -0.02%/°C) of Full Range
Humidity:                                   90% R.H., 240 Hours
Shock Survival:                          100 g, 11 ms
Vibration:                                   20 g to 2 KHz

Housing:             Corrosion-resistant nickel-iron alloy
Core:                   Hi-permeability nickel-iron alloy
Magnet Wire:     Film insulated copper
Connector:         PT02A-10- 6P


  • IP-68 welded 3/4 inch hermetically sealed steel housing
  • Radially mounted connector
  • Measurement ranges from? 0.10 to 20 inches
  • Linearity ±0.25% of Full Range Max (±0.1% Optional)
  • Shock and vibration tolerant
  • Wide operating temperature range (-15°F to 185°F)
  • Standard and custom models available
  • “Plug & Play” 4-20 mA compatible with most PLCs and controllers


  • Factory Automation
  • Materials Testing
  • Packaging Equipment
  • Valve Position Sensing
  • Corrosive Environments
  • Long Cable Runs


Dimensions & Wiring



NewTek products are warrantied against defective materials and workmanship for a period of one (1) year from the date of delivery to the original purchaser. NewTek accepts no liability for damages in the misuse of our products.

NT-HIR-750 Accessories

LVDT Cable Assemblies

LVDT Mounting Blocks

Core Rod Kits

Contact NewTek Sensors to discuss your requirements