Hall effect rotary encoder ETx25

Hall effect rotary encoder
Hall effect rotary encoder
Hall effect rotary encoder
Hall effect rotary encoder
Hall effect rotary encoder
Hall effect rotary encoder
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incremental, absolute
Hall effect
Absolute encoder resolution
12-bit, 14-bit
solid-shaft, single-turn, multi-turn
Output signal
analog, digital, voltage output, 4-20 mA, DC output, SSI, serial
Supply voltage
stainless steel, plastic
Protection level
shock resistant, dust-proof, IP66, IP40, short circuit-proof
industrial, for motors, for OEM, for elevators, for robotics, exterior
Other characteristics
compact, programmable, redundant, modular, IC, galvanically-isolated
Incremental encoder résolution (pulses per revolution

Max.: 1,024 unit

Min.: 1 unit

Flange size

19 mm
(1 in)

Housing diameter

25 mm
(0.98 in)

Shaft diameter

6 mm
(0.24 in)

Max.: 6 mm
(0.24 in)

Min.: 4 mm
(0.16 in)


18.8 mm
(0.74 in)

Max.: 28.8 mm
(1.134 in)

Min.: 18.8 mm
(0.74 in)

Rotational speed

Max.: 800 rpm
(5,027 rad.min-1)

Min.: 100 rpm
(628 rad.min-1)

Output frequency

Max.: 100 kHz

Min.: 10 kHz

Process temperature

Max.: 85 °C
(185 °F)

Min.: -40 °C
(-40 °F)


ETx25 encoders are suitable for applications where a long lifespan and optimal adaptability of the sensor to the application are important. The ETx25 family of Hall-effect encoders is characterized by its high reliability as well as lifespan of over 100 million revolutions and an independent linearity of up to ±0.3%. The encoders detect angles without contact and have a highly hardened and tempered metal sleeve bearing. The sensor in Ø25 mm housing with Ø6 mm or 6.35 mm (1/4 ") shaft is fixed in the application by means of a central thread. A comfortable selection of electrical connection possibilities via solder, - clamp, - round, - or flat ribbon cables are available. It can be chosen between following electronics: ETA25 singleturn absolute encoder (ETA25X redundant version): Provides an absolute analogue signal with 12 bit resolution. For safety and critical applications, the ETA25X offers a galvanically isolated and redundant electronic (see ETA25X series in the data sheet). ETA25PM, Teach-In-Encoder, programmable multiturn or singleturn absolute encoder: Field-Programmable (Teach-in)-Encoder for angles of rotation up to 72000° (200 revolutions), can also be used as a singleturn encoder with Teach-in. Resolution 12 bit, with current or voltage output. Teach-in can be performed on site using a simple programming circuit. ETI25 singleturn incremental encoder: With up to 1024 pulses / per revolution and availability of following output signals: TTL, Push-Pull or Open Collector ETS25 serial singleturn angle encoder: 14 bit resolution with SPI interface, redundantly available for SPI (ETS25X series) ETP25 PWM singleturn encoder: With PWM output


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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.