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Industrial Automation

Currently NAI offers the HST-21U Position Sensor along with a variety of Cables used for motion control solutions for the packaging, material handling, and automated manufacturing industries.

Other Products such as Limit Switches and Encoders, Potentiometers and Servo Position Synchronizers are no longer available for sale. Documentation for each of these Product Categories has been archived and is available below.

Astrosystems HST-21U Position Sensors

NAI offers resolver-based Astrosystems Absolute Position Sensors for the packaging, material handling, and automated manufacturing industries. Specifically designed for rugged defense and industrial applications, these highly accurate and programmable units feature standard interfaces and rugged designs. They simplify machine set-up, reduce overall costs, extend product life, and provide a very high level of application flexibility.

Astrosystems HST-21U Position Sensors
HST-21U Transducer/Encoder
  • Compatible with any Astrosystems motion controller or programmable encoder.
  • Available cable lengths for the remote installation of electronics to protect against harsh environments are: 10 feet, 25 feet, 50 feet & 100 feet
  • Industrial Transducer Model HST21U is currently the only model available. Models HST26, HST-XC, HST34, HMT34, MT34, ST23, MT23 and ST11E are no longer avilable.
  • Typical Applications: Food Processing, Packaging, Pick & Place, Indexing, Winding & Conveyor


Archived Documentation Astrosystems Limit Switches Encoders

NAI resolver-based Astrosystems Limit Switches and Encoders are no longer available for sale. Thse were used for the packaging, material handling, and automated manufacturing industries.

Astrosystems Limit Switches and Encoders Model AstroCODER 150
AstroCODER 150 - Discontinued
  • Product Description: Programmable Absolute Encoder
  • Display: Optional
  • Transducer: N/A

Astrosystmes Limit Switches and Encoders Model AstroPLS
AstroPLS - Discontinued
  • Product Description: Programmable Limit Switch
  • Display: Yes
  • Transducer: HST21U

Archived Documentation Astrosystems Potentiometers

NAI Resolver-based Astrosystems are no longer available for sale. These Potentiometers are used the packaging, material handling, and automated manufacturing industries and provide highly-accurate shaft position outputs in voltage or current format.

Astrosystems Potentiometers Model Astrosystems Durapot PT
Astrosystems Durapot PT - Discontinued
  • Product Description: Angular-to-DC Potentiometer - Hazardous Environments

Astrosystems Potentiometers Model Astrosystems Durapot LP
Durapot LP - Discontinued
  • Product Description: Angular-to-DC Potentiometer

Archived Documentation Astrosystems Servo Position Synchronizers

NAI resolver-based Astrosystems Servo Position Synchronizers are no longer available for sale. These were used by packaging, material handling, and automated manufacturing industries and provide a high-speed solution for synchronizing the position and speed of two independent shafts.

Astrosystems Servo Position Synchronizers Model Astro 1000
Astro 1000 - Discontinued
  • Product Description: Programmable Servo Synchronizer
  • Display: Yes

Astrosystems Servo Position Synchronizers Model AstroSYNC 180
AstroSYNC 180 - Discontinued
  • Product Description: Programmable Dual Axis Servo Synchronizer
  • Display: Yes