Encoders & Sensors

As a user, you are entitled to the best quality and complete operational reliability, even in extreme circumstances. Our Bei Sensors incorporate state of the art optical, magnetic and potentiometric technology and provide all the security you need. Whether the encoder is used in dusty or in wet conditions, we supply precisely the right version.

Our extensive product range includes absolute and incremental encoders, Hall-effect sensors and both rotating and linear potentiometers. From precision to heavy-duty.


In addition to basic encoders, Aproco supplies double or triple-mounted versions with output or connecting shaft for redundant applications.

ATEX / Ex / UL
If you are looking for solutions in explosion-hazardous environments, Aproco can help with a comprehensive range of explosion-proof encoders and barriers. Available in marine aluminium and stainless steel.

Specially designed for the heavy industry (steel and paper works, cranes etc.). Robust, compact and highly resistant against impact, vibration and extreme axial or radial loads.

Shock / Self-programming / Customized products
Our aim is to provide solutions for every application, for example by using unbreakable Polyfass disks instead of glass if you have machinery that is exposed to impact, or the use of our Digisine encoder with which you can effortlessly program the number of pulses per rotation within 2 minutes, which saves you from keeping stocks. If you are designing a new piece of machinery, or if you are looking for a special solution, then we are the right partner for you.

Wireless measuring
The SwiftComm Wireless Sensor interface enables wireless and safe communication from a distance of at least 300 meters. Delay time is reduced to an absolute minimum due to the fact that SwiftComm works with a point-to-point configuration that guarantees the fastest possible signal transmission.

Draw Wires
Draw wires offer a simple solution for measuring linear speed and position. They are available from 1.2 to 50 meters in length and with either incremental or absolute outputs.

The robust and compact Bei Sensors inclinometers offer high resolution, excellent sealing for extreme operating conditions and a variety of output options.

Tacho encoders / Opto tacho
Mainly for the replacement market we supply a highly reliable heavy duty tacho with an extremely long lifespan. The mechanical overspeed switch is optional.

Special modules
Intrinsic Safety Barrier
Optical Isolator Module
Dual Encoder USB Interface
Anti-Dither Module
Divide-By Module
Serial-to-Parallel Converter Module
Encoder Signal Broadcaster

Various brochures
Functional Safety brochure (SIL, PL Levels, SISTEMA)
Off Road brochure
Oil and Gas brochure
Bei Sensors Selection Guide

We have various other brochures available on request. If you contact us, we’ll be happy to send you the brochure you require.


Aproco Drive Technology - Electic Motors

We specialise in NEMA and IEC electric motors (NEMA often for export to the USA, 50 and 60 Hz / UL / CSA / AC-DC), special high-precision (SIL3 / PLe) and/or heavy-duty encoders, earthing resistors and industrial connectors. Aproco supplies an extensive range of standard products from stock and manufactures customised products for (heavy) industrial, maritime and special project applications.

If you need to replace an electric motor or need a fast solution for a new project or due to expansion, Aproco is your partner. We can supply you with identical products or equivalent models (Also if you only need one custom motor or generator). The A-brands which we distribute globally complement every possible product range. Aproco is both an advisor and a supplier in the field of electronic drive technology. If you have any questions, please contact us at: This email address is being protected from spambots. You need JavaScript enabled to view it.

We’ll be glad to help you.


Contact Us

Haparandaweg 67-D4
1013 BD AMSTERDAM        
The Netherlands

This email address is being protected from spambots. You need JavaScript enabled to view it.
0031-(0)85-13 03 847

Aproco brochure (in Dutch)