Differential sensors for acquisition of speeds

Magneto-resistive (MR) differential sensors developed by ROTEC are used to acquire the speeds on ferromagnetic gears. They are insensitive to external influences such as oil and dirt, cover very wide temperature ranges and meet the highest quality standards. The sensors offer a wide range of applications. They are available in different variants.

Differential sensors TYP A

The ROTEC differential sensor type A has a two-part design, which allows the sensor alignment and the face sensor distance to the encoder wheel to be adjusted independently of each other.

Technical drawing

Features

  • The preferred direction is adjustable after the sensor is mounted
  • Suitable for the standard temperature range
  • Insensitive to external influences such as oil and dirt
Item number

SEFP001-003

Technical data

Sensor head

  • two-part, for separate adjustment of sensor distance and preferred direction

Sensor surface

  • face side

Sensor length  

  • with 30 mm thread length: 80 mm sensor length
  • with 60 mm thread length: 110 mm sensor length
  • with 90 mm thread length: 140 mm sensor length

Sensor type

  • passive, requires downstream ROTEC Differential Sensor Adapter or ROTEC Inline Electronics (for mobile applications)

Sensor housing

  • stainless steel
  • external thread M10x1
  • standard thread length: 30/60/90 mm

Pins      

  • integrated cable (1 m)
  • extension cable (2m) available separately

Maximum gearwheel frequency            

  • 20 kHz with downstream ROTEC Differential Sensor Adapter or ROTEC Inline Electronics

Requirements gearing                                             

  • ferromagnetic, soft magnetic
  • module 0,6 bis 2,4
  • pitch 1,9 mm bis 7,7 mm

Sensing gap                                                  

  • 0,5-2x module [mm]

Temperature range                                    

  • -15 °C bis +100 °C

Differential sensors TYP B

The ROTEC differential sensor type B has a one-piece design and is available in shorter versions. In addition, the sensor is available for the standard and high temperature range.

Technical drawing

Features

  • Short sensor length
  • Standard temperature sensor with detachable connection cable
  • High temperature sensor with molded cable connection
  • Insensitive to external influences such as oil and dirt
Variants

Standard temperature sensor
Item number: SEFP004-009

High temperature sensor
Item number: SEHFP001-003

Technical data

Sensor head

  • single piece; standard temperature sensor with connector / high temperature sensor with potted cable

Sensor surface

  • face side

Sensor length standard temperature sensor with connector   

  • with 30 mm thread length: 70 mm sensor length
  • with 60 mm thread length: 100 mm sensor length
  • with 90 mm thread length: 130 mm sensor length

Sensor length high temperature sensor with potted cable

  • with 30 mm thread length: 50 mm sensor length
  • with 60 mm thread length: 80 mm sensor length
  • with 90 mm thread length: 110 mm sensor length

Sensor type

  • passive, requires downstream ROTEC Differential Sensor Adapter or ROTEC Inline Electronics (for mobile applications)

Sensor housing              

  • stainless steel
  • external thread M10x1
  • standard thread length: 30/60/90/120 mm

Pins             

  • integrated or removable cable (2m); plug straight or 90°
  • extension cable (2m) available separately

Maximum gearwheel frequency

  • 20 kHz with downstream ROTEC Differential Sensor Adapter or ROTEC Inline Electronics

Requirements gearing

  • ferromagnetic, soft magnetic
  • module 0,6 bis 2,4
  • pitch 1,9 mm bis 7,7 mm

Sensing gap

  • 0,5-2x module [mm]

Standard temperature range

  • -15 °C to +100 °C

High temperature variant

-40 °C to + 160 °C

Differential sensors TYP C

The ROTEC differential sensor type C has a one-piece design. The sensor surface is angled by 90°. This makes the sensor suitable for measurements in places that are difficult to access. In addition, the sensor is available for the standard and the high temperature range.

Technical drawing

Features

  • Angled sensor head
  • Standard temperature sensor with detachable connection cable
  • High temperature sensor with molded cable connection
  • Insensitive to external influences such as oil and dirt
Variants

Standard temperature sensor
Item number: SEFP010-SEFP015

High temperature sensor
Item number: SEHFP004-006

Technical data

Sensor head                                                 

  • single piece, with removable cable

Sensor surface

  • 90° angled

Sensor length

  • with 20 mm thread length: 40 mm sensor length
  • with 40 mm thread length: 80 mm sensor length
  • with 70 mm thread length: 90 mm sensor length

Sensor type      

  • passive, requires downstream ROTEC Differential Sensor Adapter

Sensor housing              

  • stainless steel
  • external thread M10x1
  • thread length 30/60/90 mm

Pins                                                                 

  • integrated or removable cable (2m); plug straight or 90°
  • extension cable (2m) available separately

Maximum gearwheel frequency            

  • 20 kHz with downstream ROTEC Differential Sensor Adapter

Requirements Gearing                                             

  • ferromagnetic, soft magnetic
  • module 0,6 bis 2,4
  • pitch 1,9 mm bis 7,7 mm

Sensing gap                                                  

  • 0,5-2x module [mm]

Standard temperature range                                 

  • -15 °C to +100 °C

High temperature variant                        

  • -40 °C to + 160°C