Hengstler Incremental Encoders ISD37

Hengstler Incremental Encoders ISD37

 Hengstler Incremental Encoders ISD37

The intrinsically safe optical ATEX hollow shaft encoder ISD37 for extremely high loads in industrial applications is suitable for shaft diameters up to 1 "(25.4 mm). It works reliably in the temperature range from -40 to +100 ° C. Using an OptoASIC, the latest technology is The rotary encoder is insensitive to shock and vibration and is ideally suited for use in the chemical, food, oil & gas, paper and steel industries. The HSD37 rotary encoder series also includes intrinsically safe ATEX versions for use in potentially explosive areas.

Hengstler Incremental Encoders ISD37 | Descriptions

This robust encoder features a double-sealed housing that allows application where regulatory washdown or caustic chemicals are present. Utilization of an advanced Opto ASIC with innovative packaging techniques enables the encoder to operate in high shock and vibration environments. It is also available in an Intrinsically Safe version, certified to ATEX EEx ia IIB T4, when used with the appropriate IS Barrier.


  • One-or two-channel versions
  • Double-sealed housing
  • ATEX- certification for intrinsically safe devices
  • High-resolution, unbreakable code disc
  • Industrial plugs
  • Ingress protection NEMA 4X,6 / IP66, IP67
  • Robust housing made of diecast alumunium
  • Also available as stainless steel variant


Chemical, Food & Beverage, Oil & Gas, Paper, Steel and any other where a precise encoder is needed to operate in harsh environments.

Another Article:


Product FamilyISD37
Ordering InformationRotary Encoder ISD37
Function / ApplicationIncremental
Housing Diameter [mm]95,3 mm
Solid- / Hollow ShaftHollow 6 ... 25 mm
Protection Rating HousingIP67
Operating Temperature [°C]-40 ... +80 °C
Housing OptionStainless Steel
 Nickel Finish
 powder coated alumunium
Increased Environmental RequirementsHigh mechanical robustness
 Ex atmosphere
 CSA approval
 Connection box
Revolutions [rpm]5.000 rpm
Number of Pulses15 ... 5000
InterfaceDifferential Line Driver
 Open Collector NPN

Ref: hengstler.de

Contact us : sales@wmablog.com or visit to our E-Commerce

Download Data Sheet: Incremental Encoders ISD37