Speed Sensors

Differential-Hall-Effect Speed Sensors Series A5S – the various types and their characteristics

The correct choice of sensor is always a prerequisite to achieving a successful solution. Our A5S speed sensors are based on the proven Differential-Hall-Effect principle. Their low end of 0 Hz allows monitoring the machine down to zero speed. They are contact-free, wear-free, maintenance-free and unsusceptible versus external magnetic stray fields and machine vibration. These characteristics make the series of A5S sensors especially suited to all applications where high levels of accuracy and reliability are at a premium. In contrast, other sensors like magnet-inductive or static Hall-sensors do not meet these demands.

Each sensor in the series is available in various lengths and diameters and comes with a choice of connections. However, functionally all sensors have the same characteristics.

The stainless steel sensor housing is sealed at the front and is pressure resistant (>200bar). A flat shaft is available or with a screw-in thread M12x1, M14x1, M14x1,5, M16x1, M16x1,5, M18x1, M18x1,5, M22x1, 5/8-18UNF-2A. Customized dimensions and thread specifications are possible.

To meet the specific requirements of hazardous areas we provide specialized types which are certified for ATEX/IECEx, as well as for other international standards such as UL/CSA and EAC (Russia, Kazakhstan, and the Belarus Customs Union).

  • For Hazardous Areas (Zone 0-1) an intrinsically safe implementation in conjunction with our Isolating Barrier D461
  • For Hazardous Areas (Zone 2) a non-sparking (non-incendive) variation is available

A5S product matrix (overview)

BRAUN_Products_Internet_A5S_Matrix-overview_EN_01BRAUN_Products_Internet_A5S_Matrix-overview_EN_13BRAUN_Products_Internet_A5S_Matrix-overview_EN_25BRAUN_Products_Internet_A5S_Matrix-overview_EN_37
BRAUN_Products_Internet_A5S_Matrix-overview_EN_03BRAUN_Products_Internet_A5S_Matrix-overview_EN_15
BRAUN_Products_Internet_A5S_Matrix-overview_EN_27BRAUN_Products_Internet_A5S_Matrix-overview_EN_39
BRAUN_Products_Internet_A5S_Matrix-overview_EN_05
BRAUN_Products_Internet_A5S_Matrix-overview_EN_17hBRAUN_Products_Internet_A5S_Matrix-overview_EN_17
BRAUN_Products_Internet_A5S_Matrix-overview_EN_29hBRAUN_Products_Internet_A5S_Matrix-overview_EN_29
BRAUN_Products_Internet_A5S_Matrix-overview_EN_41BRAUN_Products_Internet_A5S_Matrix-overview_EN_41

Differential-Hall-Effect Speed Sensors Series A5S0

Sensors for detection of rotational speed and direction of rotation

  • Contact-free, wear-free, maintenance-free
  • Unsusceptible versus external magnetic stray fields and machine vibration
  • Suitable for all applications where high levels of accuracy and reliability are at a premium
  • Frequency range 0 Hz…12 kHz or 0 Hz…25 kHz
  • Versions with single or dual channel
  • TÜV certified for safety level SIL3 / IEC 61508:2010
  • TÜV certified for PL e; Cat. 3 / DIN EN ISO 13849-1:2016 + DIN EN ISO 13849-2:2012
  • TÜV certified for SILCL3 / IEC 62061:2015

Differential-Hall-Effect Speed Sensors Ex ia (intrinsically safe) Series A5S1

Sensors for detection of rotational speed and direction of rotation in Hazardous Areas Zone 0-1

  • Contact-free, wear-free, maintenance-free
  • Unsusceptible versus external magnetic stray fields and machine vibration
  • Suitable for all applications where high levels of accuracy and reliability are at a premium
  • Frequency range 0 Hz…12 kHz or 0 Hz…25 kHz
  • Versions with single or dual channel
  • Certification for ATEX / IECEx, UL / CSA and EAC in Hazardous Areas Zone 0-1
  • Requires additional Isolating Barrier D461
  • TÜV certified for safety level SIL3 / IEC 61508:2010
  • TÜV certified for PL e; Cat. 3 / DIN EN ISO 13849-1:2016 + DIN EN ISO 13849-2:2012
  • TÜV certified for SILCL3 / IEC 62061:2015

Differential-Hall-Effect Speed Sensors Ex nA (non-incendive) Series A5S1…-n

Sensors for detection of rotational speed and direction of rotation in Hazardous Areas Zone 2

  • Contact-free, wear-free, maintenance-free
  • Unsusceptible versus external magnetic stray fields and machine vibration
  • Suitable for all applications where high levels of accuracy and reliability are at a premium
  • Frequency range 0 Hz…12 kHz or 0 Hz…25 kHz
  • Versions with single or dual channel
  • Certification for ATEX / IECEx, UL / CSA and EAC in Hazardous Areas Zone 2
  • TÜV certified for safety level SIL3 / IEC 61508:2010
  • TÜV certified for PL e; Cat. 3 / DIN EN ISO 13849-1:2016 + DIN EN ISO 13849-2:2012
  • TÜV certified for SILCL3 / IEC 62061:2015