Speed sensors

Hex head speed sensors

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Technical features

Hexagonal head Hall effect speed sensors - Technical characteristics

Hall effect speed sensors detect the rotation of any ferrous object with cracks or projections, typically gears and tone wheels. They incorporate a back-polarised Hall-effect chip that detects the variation of the magnetic field according to the full-empty position of the wheel and provides a digital frequency signal as an output.
In the double output versions, by reading the two signals A and B, it is possible to determine the clockwise or anti-clockwise direction of rotation: in particular, the direction of rotation can be determined from the advance or lag phase between two square-wave signals or from a switching signal. The speed sensors with hexagonal head allow quick mounting by screwing them all the way down.

PERFORMING ELECTRONICS

- Supply voltage: min 4.5V – max 30V
- Output signal: single, double
- Output voltage (NPN, PNP, Push- Pull), current, CAN BUS J1939
- Optional pull up or pull down resistor
- Zero speed (reading of the position even when the wheel is stationary)
- Operating frequency from 0Hz to 30,000Hz
- Signal phase shift precision ±20°/±30° (double output version)

VERSATILE MECHANICS

- Fixing method: body with hexagonal head for fixing and rebate mounting
- Material: available in metal version (brass/steel)
- Dimensions: different diameters and underhead lengths available, customizable on request
- Special versions for high pressures with sealing O-ring and increased bottom thickness
- Customizable cable and connector length

RELIABILITY

- Contactless Hall effect
- IP67 protection rating
- Immunity to vibrations and electromagnetic disturbances
- Operating temperature: -40°/+150 °
- Resistance to pressures up to 500 bar
- Protections against ESD, load-dump, overvoltage, polarity reversal, short circuit on output

FUNCTIONAL SAFETY AND DIAGNOSTICS

- Signal redundancy thanks to the integration of isolated and galvanically distinct circuits (double output version)
- Diagnostics of short circuits towards Gnd and Vcc
- Innovative "signal" ALIVE" for advanced diagnostics (the sensor transmits a low frequency signal even when the wheel is stationary)
- Optional diagnostic LED

Mechanical configurations

Various mechanical body configurations available, varying in diameter, underhead length and materials. Possibility to create custom versions.

Hexagonal head length 104.5
Cable and connector
customizable
Power source
4,5V / 30V
Output
voltage (NPN, PNP, Push-Pull), current, CAN BUS J1939
Number of signals
single/double
Fixing
threaded body
Cylinder material
metallic
Frequency
from 0Hz to 30.000Hz
Hexagonal head length 45
Cable and connector
customizable
Power source
4,5V / 30V
Output
voltage (NPN, PNP, Push-Pull), current, CAN BUS J1939
Number of signals
single/double
Fixing
threaded body
Cylinder material
metallic
Frequency
from 0Hz to 30.000Hz

Applications

Elen speed sensors find typical application on engines, differentials, transmissions, turbines, pumps and are able to operate in the most severe conditions of temperature, pressure, vibrations, electromagnetic disturbances and external agents.

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