Ex rotary encoder (ATEX / IECEx)

Solid shaft:
Hollow shaft:
Incremental:
Singleturn:
Multiturn:

Interested in our rotary encoders, but still have change requests? We are happy to modify it for you so that it fits perfectly.

Learn more

  • Tel.: +49 / 7424 - 89 - 0
We will be pleased to help you.

  • Hengstler GmbH
    Uhlandstr. 49
    78554 Aldingen
  • Tel. +49 / 7424 - 89 -286
  • Support request
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Rotary_encoder/Ex_rotary_encoder_ATEX_/_IECEx/ICURO RX70 Incremental Encoder
Diameter
70 mm
Resolution
Number of Pulses: 1 ... 10000
Solid- / Hollow Shaft
Solid 10 mm
Protection case
IP64 / IP67
Interface
Push-pull, Push-pull complementary, RS422
Approval
CE, ATEX, IECEx
Features
ATEX certified
IECEx certified
up to 10,000 pulses
IP67
Rotary_encoder/Ex_rotary_encoder_ATEX_/_IECEx/ICURO RX71 Incremental Encoder
Diameter
70 mm
Resolution
Number of Pulses: 2 ... 10000
Solid- / Hollow Shaft
Solid 10 mm
Protection case
IP64 / IP67
Interface
Push-pull, Push-pull complementary, RS422
Approval
CE, ATEX, IECEx
Features
ATEX certified
IECEx certified
up to 10,000 pulses
IP67
Rotary_encoder/Ex_rotary_encoder_ATEX_/_IECEx/ACURO AX65 - Absolute Encoder
Diameter
59 mm
Resolution
ST: 12 Bit
MT: 12 ... 16 Bit
Solid- / Hollow Shaft
Solid 10 mm
Protection case
IP66, IP67
Interface
BiSS / SSI, CANopen
Approval
CE, ATEX and IECEx
Features
ATEX certified
IECEx certified
Most compact design
Terminal box
Extreme robust
Stainless steel housing
Rotary_encoder/Ex_rotary_encoder_ATEX_/_IECEx/ACURO AX73 - Absolute Encoder
Diameter
59 mm
Resolution
ST: 10 ... 22 Bit
MT: 12 Bit
Solid- / Hollow Shaft
Solid 10 mm
Protection case
IP66, IP67
Interface
BiSS / SSI, Profibus
Approval
CE, ATEX and IECEx
Features
ATEX certified
IECEx certified
Robust design
Terminal box
Stainless steel housing
Rotary_encoder/Ex_rotary_encoder_ATEX_/_IECEx/ACURO AX70 - Absolute Encoder
Diameter
70 mm
Resolution
ST: 10 ... 17 Bit
MT: 12 Bit
Solid- / Hollow Shaft
Solid 10 mm
Protection case
IP64 / IP67
Interface
BiSS / SSI, CANopen, Profibus, and 2 more
Approval
CE, ATEX, IECEx
Features
ATEX certified
IECEx certified
up to IP67
up to 17 bits single-turn and 12 bits multi-turn
-40°C to +60°C
Rotary_encoder/Ex_rotary_encoder_ATEX_/_IECEx/ACURO AX71 - Absolute Encoder
Diameter
70 mm
Resolution
ST: 10 ... 17 Bit
MT: 12 Bit
Solid- / Hollow Shaft
Solid 10 mm
Protection case
IP64 / IP67
Interface
BiSS / SSI, CANopen, Profibus, and 2 more
Approval
CE, ATEX, IECEx
Features
ATEX certified
IECEx certified
up to IP67
up to 17 bits single-turn and 12 bits multi-turn
-40°C to +60°C.
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Frequently asked questions

A rotary encoder, often referred to as simply a shaft encoder, is an electro-mechanical device that converts angular positioning into output signals. Rotary encoders can be broadly segmented by their feedback type as incremental or absolute.
Rotary encoders translate the mechanical rotational motion of an object such as a motor shaft into an electronic signal. Optical rotary encoders measure rotation by shining a LED light through a disc with markings onto an optical sensor to detect motion. Magnetic rotary encoders use a similar principle but measure motion as a magnetized wheel turns and is detected by a magnetic sensor. 
Incremental rotary encoders output a stream of ubiquitous pulses over 360 degrees of rotation, hence the term pulses per revolution of PPR. Incremental rotary encoders can have one channel output (A), two channel output (AB, known as quadrature) as well as an optional index channel (Z).

Absolute rotary encoders output a unique digital word or bit for each position over 360 degrees of rotation. This digital word must be communicated in the same language as the controlling system with options including parallel, serial, field bus and ethernet based communication protocols.

Rotary encoders should be used in any application that requires precision motion control. While a power can be supplied to a motor to make it turn, to control exactly how fast it actually turns  requires real time feedback so that the controlling device can increase or decrease power to achieve a consistent motor speed or shaft position. Rotary encoders are therefore indispensable in precision motion control applications including servo motor feedback, robotics, factory automation and more.
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