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    Speed Sensors

    Transportation VRS Thrumold Series

    Provide engine timing and transmission speed by determining speed & position of rotating shafts in heavy-duty, off-road, and construction vehicles

    Overview

    The Thrumold Series VRS (Variable Reluctance Speed) sensors are designed to detect engine timing and transmission speed by determining the speed and position of rotating shafts in heavy-duty, off-road, and construction vehicles, providing information to help improve engine combustion process efficiency. These passive VRS sensors are simple, rugged devices that do not require an external voltage source for operation.

    A permanent magnet in the sensor establishes a fixed magnetic field. The approach and passing of a ferrous metal target near the sensor’s pole piece (sensing area) changes the flux of the magnetic field, dynamically changing its strength. This change in magnetic field strength induces a current into a coil winding which is attached to the output terminals.

    The output signal of a VRS sensor is an ac voltage that varies in amplitude and frequency as the speed of the monitored device changes, and is usually expressed in peak to peak voltage (Vp-p). One complete cycle occurs as each tooth passes the sensor’s pole piece. If a standard gear were used as a target, this output signal would resemble a sine wave if viewed on an oscilloscope.

    Specifications

    Others

    • Housing Length
      • 83 mm [3.25 in]
    • Output Voltage (Peak to Peak) Min
      • 30 Vp-p to 48 Vp-p
    • Weight range
      • 72 g [2.54 oz] approx.
    • Coil Resistance
      • 1270 Ohm to 1630 Ohm
    • Optimum Actuator
      • 8 DP
    • Surface Speed
      • 5.9 IPS (0.15 m/s) typ.
    • Vibration
      • 20 G RMS from 24 Hz to 2000 Hz >50 Mohm
    • Operating Frequency
      • 15 kHz typ.
      • 40 kHz typ.
    • Material
      • Stainless steel
    • Series Name
      • Thrumold
    • Operating temperature
      • -40 °C to 120 °C [-40 °F to 248 °F]
    • Termination
      • Deutsch DT04 connector
    • Mounting Thread
      • 5/8-18 UNF-2A thread size
      • M16X1.5 6G
      • M18X1.5 6G

    Others

    • Housing Length
      • 83 mm [3.25 in]
    • Output Voltage (Peak to Peak) Min
      • 30 Vp-p to 48 Vp-p
    • Weight range
      • 72 g [2.54 oz] approx.
    • Coil Resistance
      • 1270 Ohm to 1630 Ohm
    • Optimum Actuator
      • 8 DP
    • Surface Speed
      • 5.9 IPS (0.15 m/s) typ.
    • Vibration
      • 20 G RMS from 24 Hz to 2000 Hz >50 Mohm
    • Operating Frequency
      • 15 kHz typ.
      • 40 kHz typ.
    • Material
      • Stainless steel
    • Series Name
      • Thrumold
    • Operating temperature
      • -40 °C to 120 °C [-40 °F to 248 °F]
    • Termination
      • Deutsch DT04 connector
    • Mounting Thread
      • 5/8-18 UNF-2A thread size
      • M16X1.5 6G
      • M18X1.5 6G
    • Housing Length : 83 mm [3.25 in]
    • Output Voltage (Peak to Peak) Min : 30 Vp-p to 48 Vp-p
    • Weight range : 72 g [2.54 oz] approx.
    • Coil Resistance : 1270 Ohm to 1630 Ohm
    • Optimum Actuator : 8 DP
    • Surface Speed : 5.9 IPS (0.15 m/s) typ.
    • Vibration : 20 G RMS from 24 Hz to 2000 Hz >50 Mohm
    • Operating Frequency : 15 kHz typ.|40 kHz typ.
    • Material : Stainless steel
    • Series Name : Thrumold
    • Operating temperature : -40 °C to 120 °C [-40 °F to 248 °F]
    • Termination : Deutsch DT04 connector
    • Mounting Thread : 5/8-18 UNF-2A thread size|M16X1.5 6G|M18X1.5 6G
    Data Sheet
    Name
    Description
    File Size
    Date
    Size
    Transportation Variable Reluctance Speed Sensors, Thrumold Series - Datasheet
    application/pdf 511.15 KB
    7/16/2021
    511.15 KB
    Manuals and Guides
    Name
    Description
    File Size
    Date
    Size
    Transportation Range Guide
    application/pdf 16.68 MB
    9/26/2022
    16.68 MB
    Speed Sensors Range Guide
    application/pdf 777.88 KB
    7/16/2021
    777.88 KB
    Installation Instructions
    Name
    Description
    File Size
    Date
    Size
    Transportation Variable Reluctance Speed Sensors, Thrumold Series - Installation Instructions
    application/pdf 321.25 KB
    7/16/2021
    321.25 KB
    Technical Note
    Name
    Description
    File Size
    Date
    Size
    VRS Output Voltage Calculations
    application/pdf 46.78 KB
    7/16/2021
    46.78 KB
    Application Note
    Name
    Description
    File Size
    Date
    Size
    Agricultural Vehicles
    application/pdf 1.11 MB
    4/11/2024
    1.11 MB
    VRS Sensor Application Notes
    application/pdf 102.75 KB
    7/16/2021
    102.75 KB
    VRS Industrial Magnetic Speed Sensors Application Note
    application/pdf 537.58 KB
    7/16/2021
    537.58 KB
    Construction Vehicles -
    application/pdf 984.29 KB
    12/20/2022
    984.29 KB
    Defence Ground Vehicles -
    application/pdf 872.87 KB
    6/14/2023
    872.87 KB
    Name
    Description
    File Size
    Date
    Size
    Agricultural Vehicles
    application/pdf 1.11 MB
    4/11/2024
    1.11 MB
    Transportation Variable Reluctance Speed Sensors, Thrumold Series - Installation Instructions
    application/pdf 321.25 KB
    7/16/2021
    321.25 KB
    VRS Sensor Application Notes
    application/pdf 102.75 KB
    7/16/2021
    102.75 KB
    VRS Output Voltage Calculations
    application/pdf 46.78 KB
    7/16/2021
    46.78 KB
    Transportation Variable Reluctance Speed Sensors, Thrumold Series - Datasheet
    application/pdf 511.15 KB
    7/16/2021
    511.15 KB
    VRS Industrial Magnetic Speed Sensors Application Note
    application/pdf 537.58 KB
    7/16/2021
    537.58 KB
    Transportation Range Guide
    application/pdf 16.68 MB
    9/26/2022
    16.68 MB
    Speed Sensors Range Guide
    application/pdf 777.88 KB
    7/16/2021
    777.88 KB
    Construction Vehicles -
    application/pdf 984.29 KB
    12/20/2022
    984.29 KB
    Defence Ground Vehicles -
    application/pdf 872.87 KB
    6/14/2023
    872.87 KB
    Name
    Description
    File Size
    Date
    Size
    Transportation Variable Reluctance Speed Sensors, Thrumold Series - Datasheet
    511.15 KB
    7/16/2021
    Transportation Range Guide
    16.68 MB
    9/26/2022
    Speed Sensors Range Guide
    777.88 KB
    7/16/2021
    Transportation Variable Reluctance Speed Sensors, Thrumold Series - Installation Instructions
    321.25 KB
    7/16/2021
    VRS Output Voltage Calculations
    46.78 KB
    7/16/2021
    Agricultural Vehicles
    1.11 MB
    4/11/2024
    VRS Sensor Application Notes
    102.75 KB
    7/16/2021
    VRS Industrial Magnetic Speed Sensors Application Note
    537.58 KB
    7/16/2021
    Construction Vehicles -
    984.29 KB
    12/20/2022
    Defence Ground Vehicles -
    872.87 KB
    6/14/2023
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