Hall Effect Zero Speed Sensors

Hall Effect speed sensors are integrated units containing the transducer, magnet (as applicable), and electronics that are used to provide zero speed sensing. We manufacture them in both oriented and non-oriented models. In addition to the standard models, all Hall Effect series sensors are available in custom lengths, diameters, configurations, and mounting threads.

These hall effect gear tooth sensors are designed to sense the angular rotation of ferrous metal targets and are popular for a wide variety of applications including propulsion gear speed and direction, shaft speed and direction, as well as process-based applications that require operation at extremely slow speeds, such as measuring movement of a conveyor.

Motion Sensors specializes in customizing our sensors, and these hall effect transducers can be made to suit in terms of electrical specifications such as output logic levels, as well as physical parameters such as thread types, lengths, mounting flanges, cabling and connectors.

CUSTOM MODELS

In addition to our standard models, Hall Effect speed sensors are available in custom lengths, diameters, configurations, and mounting threads. Custom operating specifications (output options, etc.) are available, as well as options such as pigtail leads or NPT threading. See additional sensor customization options.

 

Oriented Hall Effect Speed Sensors – H Series

The H series of sensors is based on Hall Effect sensor technology, which can sense a change in target motion from true zero to 20 KHz. These sensors incorporate a magnet within the sensor, enabling them to sense ferrous metal as well as magnet targets and can be optimized to detect fine as well as large pitch targets. These sensors integrate a preamplifier/signal conditioner within the sensor housing that provides excellent noise immunity and greater transmission capability. The output frequency of these sensors has a square pulse waveform (digital) that directly relates to the number of turbine blades, gear teeth, etc. that have been sensed. These pulses, in turn, can be correlated to determine flow rate, RPM, or velocity.

In addition to the standard models, oriented hall effect sensors are available in custom lengths, diameters, configurations, and mounting threads. Motion Sensors also offers Intrinsically Safe versions for applications or environments that require Intrinsic Safety.

INSTALLATION  CONSIDERATIONS

Input Power
  • 4.7 to 24 VDC regulated, 15 mA maximum @ no load
  • Reverse polarity protected

Pulse Output Options

  • TTL/CMOS (Standard): fan-out of 5 TTL/CMOS loads
  • Open collector
  • Supply tracking: logic 0: 0.4 VDC
  • logic 1: (VS-0.2)xRL/(RL+2200)
Airgap
Up to 0.100" dependent on target geometry and sensor construction
Interconnection Options
  • Magnet that resists demagnetization
  • Focusing tip
  • Three (3) pin MIL-C-5015 type connector with gold plated pins; mates with MS3106-10SL-3S; other connector types upon request
  • Pigtail with wires or cable
  • NPT threaded body with wire or cable pigtail for explosion proof environments
Warranty
Unconditional one (1) year warranty if used within specifications
Pin Connections
  • Pin A (Red): Input Power (+)
  • Pin B (White): Pulse Output (+)
  • Pin C (Black): Common (-)
Physical Features
  • Operating temperature:
    -40°C to +125°C with connector
    -40°C to +105°C with pigtail

NOTE: units that operate up to 150°C
are also available

  • Storage temperature:
    -40°C to +150°C with connector
    -40°C to +105°C with pigtail
  • Body material: 300 series stainless steel
  • Encapsulation: epoxy potting or hermetically sealed, welded construction
  • High Shock and Vibration resistance (MIL-STD-202G METHOD 214A, Test Condition H)
Orientation
Alignment of the sensor to target rotation is required for optimal performance, ensuring proper orientation of the hall effect element to the magnetic field
Approvals
CE compliant to EMC Directive 2004/108/EC for use in residential, commercial, light industrial and heavy industrial environments

MODEL NUMBERMOUNTING
THREAD (A)
THREAD
LENGTH (B)
OVERALL
LENGTH (C)
CONNECTION TYPEOUTPUT (Pulse Range)
H-15/8X181.432.86ConnectorOpen Collector
H-25/8X181.432.86Connector0-5 Vdc
H-35/8X18.851.00PigtailOpen Collector
H-45/8X18.851.00Pigtail0-5 Vdc
H-55/8X181.351.50PigtailOpen Collector
H-65/8X181.351.50Pigtail0-5 Vdc
H-95/8X181.432.86Connector0-10 Vdc
H-105/8X181.432.86ConnectorSupply Tracking
H-115/8X18.851.00Pigtail0-10 Vdc
H-125/8X18.851.00PigtailSupply Tracking
H-135/8X181.351.50Pigtail0-10 Vdc
H-145/8X181.351.50PigtailSupply Tracking

NOTES:
Dimensions in inches
Specifications +/-10%
Mounting threads UNF-2A

Non-Oriented Hall Effect Sensors – HN Series

The HN series of speed sensors is based on Hall Effect sensor technology, which can sense a change in target motion from true zero to 20 KHz. These sensors incorporate a magnet within the sensor, enabling them to sense ferrous metal as well as magnetic targets. Maximum air gap sensing distances are typically 0.100″.

Motion Sensor Hall Effect Sensors are optimized to provide extremely accurate tooth edge detection when used with larger pitch targets and offer the unique advantage of not requiring orientation to the target. HN speed sensors integrate a preamplifier/signal conditioner within the sensor housing that provides excellent noise immunity and greater transmission capability.

In addition to the standard models, oriented hall effect sensors are available in custom lengths, diameters, configurations, and mounting threads. MSI also offers Intrinsically Safe versions for applications or environments that require Intrinsic Safety.

INSTALLATION  CONSIDERATIONS

Input Power

  • 4.7 to 24 VDC regulated, 15 mA maximum @ no load
  • Reverse polarity protected

Pulse Output Options

  • TTL/CMOS (Standard): fan-out of 5 TTL/CMOS loads
  • Open collector
  • Supply tracking: logic 0: 0.4 VDC; logic 1: (VS-0.2)xRL/(RL+2200)

Airgap
Up to 0.100" dependent on target geometry and sensor construction

Interconnection Options

  • Three (3) pin MIL-C-5015 type connector with gold plated pins; mates with MS3106-10SL-3S; other connector types upon request
  • Pigtail with wires or cable
  • NPT threaded body with wire or cable pigtail for explosion proof environments

Warranty
Unconditional one (1) year warranty if used within specifications

Pin Connections
  • Pin A (Red): Input Power (+)
  • Pin B (White): Pulse Output (+)
  • Pin C (Black): Common (-)
Physical Features
  • Operating temperature:
    -40°C to +125°C with connector
    -40°C to +105°C with pigtail

NOTE: units that operate up to 150°C
are also available

  • Storage temperature:
    -40°C to +150°C with connector
    -40°C to +105°C with pigtail
  • Body material: 300 series stainless steel
  • Encapsulation: epoxy potting or hermetically sealed, welded construction
  • High Shock and Vibration resistance (MIL-STD-202G METHOD 214A, Test Condition H)
Orientation
Non-oriented operation, allowing for ease of installation
Approvals
CE compliant to EMC Directive 2004/108/EC for use in residential, commercial, light industrial and heavy industrial environments
 

STANDARD MODELS

MODEL NUMBERMOUNTING THREAD (A)THREAD LENGTH (B)OVERALL LENTGH (C)CONNECTION TYPEOUTPUT (Pulse Range)
HN-105/8X181.432.86ConnectorOpen Collector
HN-55/8X181.432.86Connector0-5 Vdc
HN-285/8X181.432.86Connector0-10 Vdc
HN-295/8X181.432.86ConnectorSupply Tracking
HN-165/8X18.851.0PigtailOpen Collector
HN-135/8X18.851.0Pigtail0-5 Vdc
HN-305/8X18.851.0Pigtail0-10 Vdc
HN-315/8X18.851.0PigtailSupply Tracking
HN-155/8X181.351.5PigtailOpen Collector
HN-145/8X181.351.5Pigtail0-5 Vdc
HN-325/8X181.351.5Pigtail0-10 Vdc
HN-335/8X181.351.5PigtailSupply Tracking

NOTES:
Dimensions in inches
Specifications +/-10%
Mounting threads UNF-2A

Quadrature Output Dual Channel Speed Sensors – HD Series

The HD series quadrature output sensors are based on Hall Effect sensor technology, which can sense a change in target motion from true zero to 15 KHz. The HD series offers dual channel output and, where required, directional logic. The output frequency of HD sensors has a square pulse waveform (digital) that directly relates to the number of turbine blades, gear teeth, etc. that have been sensed. These pulses, in turn, can be correlated to determine flow rate, RPM, or velocity.

HD sensors are based on the H series which incorporate a magnet within the sensor, enabling them to sense ferrous metal as well as magnet targets. Maximum air gap sensing distances are typically 0.100″ and these sensors can be optimized to detect fine as well as large pitch targets.

General Operation

The HD series sensors consist of two hall-effect elements biased with a magnet to detect the change in magnetic field strength caused by the rotation of a ferrous target gear. When the target gear passes by sensor element A, the output switches from a logic 0 to a logic 1 at half the pitch (P/2) of the target gear. As the target gear continues, the output switches from a logic 1 to a logic 0 at the gear pitch (P).

Sensor element B is placed at a distance of one fourth of the pitch of the target gear (P/4) from element A. The output of element B is shifted by one forth (P/4) from the output of element A. In electrical terms, this creates a phase shift of 90°. When the gear turns in the counterclockwise direction, output A leads output B. When the gear turns in the clockwise direction, output A lags output B.

The descriptions above are only a theoretical ideal model to explain the fundamental operation of the HD series sensors. The realities of the physical world such as mechanical tolerances, magnetic field variations, and other physical phenomenon cause deviations from the ideal model. Visit our Practical Application Guide to learn more.

Input Power
  • 4.7 to 24 VDC regulated, 15 mA maximum @ no load
  • Reverse polarity protected
Open Collector Type Output Options
  • TTL/CMOS (Standard): fan-out of 5 TTL/CMOS loads
         - VOL < 0.4V
         - VOH > VOUT X (RLOAD / (RLOAD+1000)
  • Open Collector
  • Supply tracking
         -VOL < 0.4V
         - VOH > (VSUPPLY - 0.2) X (RLOAD / (RLOAD+1000)

Push-Pull Type Output Options

  • Push-Pull Fixed Voltage
         - VOL < 0.4V @ 30mA
         - VOH > VOUT - 0.4V @ -30mA
  • Push-Pull Supply Tracking
         - VOL < 0.4V @ 30mA
         - VOH > VSUP - 0.6V @ -30mA
  • Differential Push-Pull, Fixed or Supply Tracking

Airgap
Up to 0.100" dependent on target geometry, magnet construction and sensor construction (for those based on the H series)

Interconnection Options

  • Pigtail with wires or cable
  • NPT threaded body with wire or cable pigtail for explosion proof environments
  • Connector per customer specifications

Warranty
Unconditional one (1) year warranty if used within specifications

Physical Features

  • Operating temperature:
    -40°C to +125°C

    Units that operate up to +150°C are also available
  • Storage temperature:
    -40°C to +150°C
  • Body material: 300 series stainless steel
  • Encapsulation: epoxy potting or hermetically sealed, welded construction
  • High Shock and Vibration Resistance - contact factory for details

Orientation

  • Alignment of the sensor to target rotation is required for optimal performance, ensuring proper orientation of the hall effect element to the magnetic field
  • Our Quadrature sensors are aligned and tested with a 12 pitch gear. The alignment mark on the sensor housing is based upon the 12 pitch gear. In the event that a gear with a different pitch is used, the alignment mark should only be used as a starting point and the sensor should be rotated during installation while monitoring the output in order to obtain the proper Quadrature signal. If the proper alignment marking for use with a different pitch gear is desired, please contact the sales department with gear details prior to ordering.
Approvals
CE compliant to EMC Directive 2004/108/EC for use in residential, commercial, light industrial and heavy industrial environments


TYPEOUTPUTPART NUMBERHOUSINGCONNECTION TYPE
Open CollectorSupply TrackingHD-116Flange MountConnector
Open CollectorSupply TrackingHD-117Flange MountCable
Open CollectorSupply TrackingHD-1185/8-18 ThreadCable
Open Collector5VHD-119Flange MountConnector
Open Collector5VHD-120Flange MountCable
Open Collector5VHD-1215/8-18 ThreadCable
Open CollectorIsolated, Supply TrackingHD-122Flange MountConnector
Open CollectorIsolated, Supply TrackingHD-123Flange MountCable
Open CollectorIsolated, Supply TrackingHD-1245/8-18 ThreadCable
Open CollectorIsolated, 5VHD-125Flange MountConnector
Open CollectorIsolated, 5VHD-126Flange MountCable
Open CollectorIsolated, 5VHD-1275/8-18 ThreadCable
Open CollectorSupply Tracking, DirectionHD-128Flange MountConnector
Open CollectorSupply Tracking, DirectionHD-129Flange MountCable
Open CollectorSupply Tracking, DirectionHD-1305/8-18 ThreadCable
Open Collector5V, DirectionHD-131Flange MountConnector
Open Collector5V, DirectionHD-132Flange MountCable
Open Collector5V, DirectionHD-1335/8-18 ThreadCable
Open CollectorNoneHD-67Flange MountConnector
Open CollectorNoneHD-134Flange MountCable
Open CollectorNoneHD-1355/8-18 ThreadCable
Open CollectorDirectionHD-136Flange MountConnector
Open CollectorDirectionHD-137Flange MountCable
Open CollectorDirectionHD-1385/8-18 ThreadCable
Push/PullSupply TrackingHD-139Flange MountConnector
Push/PullSupply TrackingHD-140Flange MountCable
Push/PullSupply TrackingHD-1415/8-18 ThreadCable
Push/Pull5VHD-142Flange MountConnector
Push/Pull5VHD-143Flange MountCable
Push/Pull5VHD-1445/8-18 ThreadCable
Push/PullDifferential, Supply TrackingHD-145Flange MountConnector
Push/PullDifferential, Supply TrackingHD-146Flange MountCable
Push/PullDifferential, Supply TrackingHD-1475/8-18 ThreadCable
Push/PullDifferential, 5VHD-148Flange MountConnector
Push/PullDifferential, 5VHD-149Flange MountCable
Push/PullDifferential, 5VHD-1505/8-18 ThreadCable
Push/PullSupply Tracking, DirectionHD-151Flange MountConnector
Push/PullSupply Tracking, DirectionHD-152Flange MountCable
Push/PullSupply Tracking, DirectionHD-1535/8-18 ThreadCable
Push/Pull5V, DirectionHD-154Flange MountConnector
Push/Pull5V, DirectionHD-155Flange MountCable
Push/Pull5V, DirectionHD-1565/8-18 ThreadCable
Push/PullIsolated, Supply TrackingHD-157Flange MountConnector
Push/PullIsolated, Supply TrackingHD-158Flange MountCable
Push/PullIsolated, Supply TrackingHD-1595/8-18 ThreadCable

NOTES:
Dimensions in inches
Specifications +/-10%
Mounting threads UNF-2A