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AI-Tek 70085-1010-412 Passive Magnetic Speed Sensor

AI-Tek 70085-1010-412 Passive Magnetic Speed Sensor

 
AI-TEK INSTRUMENTS · PASSIVE SPEED SENSING
IN STOCK
SERIES / 70085
VR
 
Variable-reluctance
magnetic pickup
SELF-POWERED SPEED MEASUREMENT
70085-1010-412
Passive Magnetic Speed Sensor
Rugged passive pickup for converting passing ferrous targets into an AC speed signal—without an external power supply.
THREAD5/8-18
SENSOR7.25 in
TEMP.−65 to 100°C
01 / SENSOR FILE
VR
 
PASSIVE MAGNETIC PICKUP

70085-1010-412

Variable-Reluctance Speed Sensor

Designed to generate an AC signal as ferrous gear teeth or targets pass its magnetic pole. With no moving contacts and no external power requirement, it suits reliable speed, frequency and rotational-event detection.

THREAD SIZE
5/8-18
THREAD LENGTH
6.00 in / 152.4 mm
SENSOR LENGTH
7.25 in / 184.15 mm
TERMINATION
Wire leads
SIGNAL CHARACTER

A self-powered measurement path

FERROUS TARGET
Passing tooth or slot
MAGNETIC PICKUP
Flux change induces AC
MONITOR
Speed / event signal
GUARANTEED OUTPUT
13.4 V P-P
DC RESISTANCE
240 Ω max.
INDUCTANCE
30 mH ref.
OPERATING WINDOW

Built for machinery duty

−65 to +100°C
Published operating-temperature range
10 ft / 3.05 m
Lead length; white lead positive
01

Rotating equipment

Turbines, compressors, motors, pumps and gear-driven machinery.

02

Control feedback

Speed indication, overspeed logic, event timing and frequency measurement.

03

Harsh installations

Applications where a simple, contactless and self-powered sensor is preferred.

FIELD NOTES / FAQ

Selection checks before ordering

?
Does 70085-1010-412 need an external power supply?

No. It is a passive variable-reluctance sensor that produces an AC signal from target motion.

What target is suitable?

Use a ferrous gear tooth, slot or similar moving target and verify the air gap and geometry for the receiving instrument.

What should be checked during replacement?

Confirm the exact part number, 5/8-18 mounting thread, insertion length, lead arrangement and connector requirements.

Can it measure zero speed?

A passive magnetic pickup needs target motion to induce voltage, so signal level falls as speed approaches zero.

What information helps us quote accurately?

Send the full nameplate code, quantity, destination and photos of the installed sensor and termination.

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