Magnetic Pickups

Single Hall Effect Sensors Dual Hall Effect Sensors

Standard MPU

Our aim is to align principles with applications, practices with experiences, and performance with specifications. We specialize in designing and manufacturing Magnetic Pickups, delivering high-performance solutions at a low cost.

Our magnetic pickups are sensitive, shock-resistant, versatile, and reliable in harsh conditions. They enhance system performance, efficiency, and on-board diagnostics, adding value to your operations.

Perfect for applications in heavy equipment speed, transmission, engine governors, and camshaft/crankshaft positioning and output, our sensors come in custom, standard, and OEM replacement options. Contact Sentech for detailed specification sheets.

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Features

Self-powered operation
Simple installation
No moving parts
Operates over wide speed range
Customized versions available
Adapts to various configurations
Rugged design sealed for harsh enviornments

Applications

Engine and Motor RPM
Gear Speed Measurement
Servo Motion Control
Turbines/Power Generation
Transmission Cam/Crank Shaft
Vehicle Wheel Slip/Traction Control
Compressors and Pumps

Typical Specification

Supply Voltage Range

.7 V p-p to 190 V p-p

Coil Resistance

68 OHMS to 5000 OHMS

Inductance

7 mH to 500 mH

Air Gap

.003” to .080”

Pole Piece Shapes

Cylindrical, Conical, Chisel-tip, Stepped, Custom

Diameters

.020” to .250”

Min. Surface Speed

10 IPS(.25 m/Sec.) Typ.

Frequency Range

0 Hz to 15 KHz Typ.

Vibration Meets

Mil-Std 202F Method 204D

Operating Temperatures

-55°C to 180°C

Housing Diameter

1.25” to .187” Metric Sizes M18 to M8

Housing Material/Style

Stainless Steel, Plastic threaded or non-threaded, Aluminum, Molded, Stamped, Brazed

Termination

More than 30 standard terminal configurations. Available to your specification.

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Digital MPU

Our Digimag Digital Magnetic Pickups have transformed the use of magnetic sensors in the computer peripherals industry, where affordability and compact design are crucial.

These pickups generate a digital pulse output when detecting the transition from non-magnetic to magnetic material passing by the pole piece. The output pulse's rise and fall times, as well as its amplitude, are independent of the speed at which the magnetic discontinuity moves. The maximum rise time is 1,000 nanoseconds, and the maximum fall time is 50 nanoseconds.

Customized for optimal performance according to your specifications. Contact Sentech for more details or help with filling out our online questionnaire.

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Features

Computing
High-speed counting
Positioning
Tachometry
Syncronization
Flow metering
Machine Control

Applications

Wide Ranging application from component flexibility
Constant amplitude digital output
Positive and negative going logic signals
Protection against target input conditions
Operate throughout a wide range of supply voltages
Air gap and surface speed combinations of 0.010" at 20 IPS to 0.075" at 2500 IPS

Typical Specification

Supply Voltage Range

+5 Vdc to 15 Vdc

Supply Current

6 mA max

Output (at 5 Vdc supply)

0.2 V low; 4.75 V high

Output (at 15 Vdc supply)

0.2 V low; 14.25 V high

Output Resistance

4.0k OHM

Target Material

Ferromagnetic

Cutoff Frequency

20 kHz

Typical Air Gaps

0.003” to 0.080”

Polarity of Output Pulse

Positive or Negative

Resolution

to 0.010”

Operating Temperature

-25°C to 85°C

Dimensions

0.25” OD to 0.875”OD
0.875” length to 4.625” length

Case Materials

Magnetic or Non-magnetic stainless steel, aluminum, plastic.
Terminal Configurations Available to your specification.

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Interested in learning more?

Sentech designs and manufactures with ISO 9001:2015, AS9100 Rev D certified quality management system. ANAB accredited.
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Most Sentech products meet the following standards and/or certifications:
UL/CSA, ATEX, IECEX, TIIS (Japan), KOSHA / KCA (South Korea), Class 1 / Division 2 for harsh environments with flammable gasses or combustible dusts, IP54/IP65/IP66/IP67, RoHS - Reduction of Hazardous Substances, REACH - Restricted Chemicals List

Learn more about our standards and certifications →

All Sentech Inc. products are warranted against defective materials and workmanship. This warranty applies for a period of one year from the date of delivery to the original purchaser. Any product that is found within the one year period not to meet these standards will be replaced or repaired at the discretion of Sentech Inc. No other warranty is expressed or implied. Although Sentech Inc. manufactures its products to exacting specification standards, we assume no responsibility for their misuse. Sentech Inc. accepts no liability for damages, incidental or punitive, in applications using our products. Please note: It is solely the user’s responsibility to properly install and maintain transducers. Sentech Inc. manufactures its products to meet stringent specifications and cannot assume responsibility for those consequences arising from their misuse or unauthorized modification. SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.

Table of Contents

Standard MPU

Features

Applications

Typical Specification

Digital MPU

Features

Applications

Typical Specification

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