Magnetic Pickups

Magnetic pickups are sensors that detect the speed of a moving part, typically in an engine. When objects like gears or shafts with keyways are passed through the sensor's magnetic field, the field oscillates, which induces  in the sensor's coil an AC voltage to be read by an electrical device such as a counter or oscilloscope.


Features of a magnetic pickup

A magnetic pickup is a coil that is wound around a magnetised probe. When objects like gear teeth, turbine rotor blades, slotted discs or shafts pass through the probe's magnetic field, the flux density is modulated, inducing a measurable AC voltage. Magnetic pickups tend to have a high-output voltage that is suitable for use with heavy-duty wiring. They are generally unaffected by dust and dirt, and are sturdier than most other plastic sensors. 


What can magnetic pickups be used for?

Magnetic pickups can be used as parts of speedometers or tachometers, which are integral parts of engines and industrial equipment.


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Description Price Body Style Output Type Detection Range Switching Frequency Reverse Polarity Protection Short Circuit Overload Protection Terminal Type Mounting Style Switching Current Maximum AC Voltage Maximum DC Voltage Thread Size Supply Voltage Housing Material
RS Stock No. 173-2634
Mfr. Part No.AA747AHA-LB
BrandSensitec
MYR7.131
Each (On a Reel of 4000)
units
Block Analogue - - - - - Surface Mount - 9V - - ±9 V -
RS Stock No. 304-172
BrandRS PRO
MYR267.16
Each
units
Barrel Digital 2.5 mm - - - Wire Lead - - - - 1/4-40 UNS-2A 5 → 15 V dc Stainless Steel
RS Stock No. 123-6288
Mfr. Part No.AFF755BHA-AD
BrandSensitec
MYR9.326
Each (On a Reel of 4000)
units
- - - - - - - - - - - - - -
RS Stock No. 786-5857
Mfr. Part No.MZC1-4V3PS-KUO
BrandSick
MYR184.53
Each
units
Barrel PNP/NO - 1 kHz Yes Yes Cable Socket/Screw 100 mA - 30V - 10 → 30 V dc Plastic
RS Stock No. 313-2295
Mfr. Part No.BIM-IKT-Y1X
BrandTurck
MYR184.17
Each
units
- NO - ≤1 kHz - - Cable Bracket, Tie Rod 100 mA - - - 8.2 V dc Gadolinium Zinc
RS Stock No. 111-3712
Mfr. Part No.MZC1-4V3PS-KP0
BrandSick
MYR197.25
Each
units
Block PNP-NO 7 mm 1 kHz Yes Yes Cable with M8 Connector Panel 100 mA - 30V M8 10 → 30 V dc Plastic
RS Stock No. 814-1064
Mfr. Part No.BMF 235K-PS-C-2A-SA95-S4-00,3
BrandBALLUFF
MYR320.51
Each
units
Barrel PNP - 3 kHz Yes Yes Cable Cable - - 30V - 10 → 30 V dc Polyamide
RS Stock No. 111-3710
Mfr. Part No.RZT7-03ZWS-KWB
BrandSick
MYR130.44
Each
units
Block Reed-NO 10 mm 400 Hz - Yes Wire Lead Panel 100 mA 230V 230V - 5 → 230 V ac/dc Plastic
RS Stock No. 814-1055
Mfr. Part No.BMF 235K-PS-C-2A-SA2-S49-00,3
BrandBALLUFF
MYR171.43
Each
units
Barrel PNP - 3 kHz Yes Yes Cable Cable - - 30V - 10 → 30 V dc Polyamide
RS Stock No. 789-7621
Mfr. Part No.MZC1-2V2PS-KU0
BrandSick
MYR184.53
Each
units
Barrel PNP 4 mm 1 kHz Yes Yes Cable Drop In - 30V 30V M12 5 → 30 V ac/dc Plastic
RS Stock No. 765-9595
Mfr. Part No.AFF755BHA-AD
BrandSensitec
MYR18.16
Each
units
Block Analogue - 1 MHz - - - Surface Mount ±1 A 9V - - 1.2 → 9 V -
RS Stock No. 111-3711
Mfr. Part No.RZT7-03ZRS-KW0
BrandSick
MYR104.99
Each
units
Block Reed-NO 10 mm 400 Hz Yes Yes Wire Lead Panel 300 mA, 500 mA 30V 30V - 5 → 30 V ac/dc Plastic
RS Stock No. 789-7628
Mfr. Part No.MZC1-2V2PS-KP0
BrandSick
MYR197.25
Each
units
Barrel PNP 4 mm 1 kHz Yes Yes Cable Drop In - 30V 30V M8 5 → 30 V ac/dc Plastic
RS Stock No. 905-5254
Mfr. Part No.ASTC0000
BrandRed Lion
MYR315.12
Each
units
Barrel NPN - - - - Wire Lead Flush - - 30V - 9 → 30 V dc Stainless Steel
RS Stock No. 905-5289
Mfr. Part No.LMPC0000
BrandRed Lion
MYR336.96
Each
units
Barrel NPN - - - - 3-Pin Connector Flush 20 mA - 30V 5/8-24 9 → 30 V dc Stainless Steel
RS Stock No. 741-7531
Mfr. Part No.MK5100
MYR241.33
Each
units
Block PNP - >10 kHz Yes Yes Cable Flush 100 mA - 30V - 10 → 30 V dc Polyamide
RS Stock No. 307-6195
Mfr. Part No.PSA60010
BrandCelduc
MYR116.51
Each
units
Block - 12 mm - - - Wire Lead - 3 A 440V - - - -
RS Stock No. 905-5298
Mfr. Part No.MP37TA00
BrandRed Lion
MYR168.23
Each
units
Barrel NO - - - - M12 Connector Threaded - - - M12 1 V Steel
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VO = VS x RL / (RL + 5000)WhereVO = Amplitude of output pulse (Volts)VS = Supply voltage (volts, dc)RL = Load impedance (ohms)5000 = Approximate output impedance (ohms). An ’active’ version of the standard type (Stock no. 304-166) but ...
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