Description
Product Overview
The AI-TEK 70085-1010-428 is a magnetic speed sensor. It detects rotational speed without contact. This sensor works in extreme temperatures from -73°C to +232°C. Many industries trust AI-TEK for reliable speed sensing.
This model features a 3/8-24 thread size. The thread length measures 1.5 inches. Total sensor length reaches 1.94 inches. It comes with 40 inch (1 meter) lead wires. The net weight stays under 2 ounces.
Technical Specifications
Brand: AI-TEK
Model: 70085-1010-428
Category: Magnetic Speed Sensor / Passive Pickup
Electrical Characteristics
- Standard output voltage: 24V peak-to-peak (P-P)
- Guaranteed output voltage: 2.0V P-P minimum
- Output polarity: White lead positive
- Typical inductance: 21 mH reference value
- Maximum DC resistance: 125 ohms
- Output type: Passive variable reluctance (no external power needed)
Mechanical Dimensions
- Thread size: 3/8-24 UNF
- Thread length: 1.5 inches (38.1 mm)
- Total sensor length: 1.94 inches (49.3 mm)
- Termination: 40 inch wire leads (1 meter)
- Net weight: 2 oz maximum (57 grams)
- Body material: Stainless steel construction
Environmental Ratings
- Operating temperature: -73°C to +232°C (-99°F to +450°F)
- Agency approval: None (general industrial use)
- Ingress protection: NEMA 3, 4, 12 typical for magnetic pickups
- Vibration resistance: High (solid state design)
Installation Guide
Install the AI-TEK 70085-1010-428 near a ferrous gear tooth. Maintain an air gap of 0.005 to 0.015 inches. Use the 3/8-24 thread to mount securely. Tighten the sensor until it contacts the gear. Then back it out one quarter turn. This prevents mechanical damage.
Connect the white lead to positive input. Connect the shield or other lead to ground. Keep sensor cables away from high voltage wires. Use shielded cable for long runs. The sensor needs no external power supply.
Compatibility & Typical Applications
This speed sensor works with any PLC or counter. It accepts variable reluctance input signals. Common applications include:
- Engine RPM monitoring
- Conveyor belt speed measurement
- Turbine rotational speed detection
- Pump speed feedback
- Gear tooth counting systems
- Motor speed control loops
Diagnostic Capability & Maintenance
The AI-TEK 70085-1010-428 requires zero calibration. Its passive design offers excellent reliability. Check the output voltage with an oscilloscope. A healthy sensor produces a clean sine wave. Low output suggests a large air gap. No output means damaged coil or wiring.
Clean the sensor tip periodically. Remove metal debris from the magnetic pole piece. Inspect lead wires for cuts or abrasion. This simple maintenance extends sensor life significantly.
Package Contents
- One AI-TEK 70085-1010-428 magnetic speed sensor
- Two 40-inch wire leads pre-attached
- Installation datasheet (printed)
- Product identification label
Warranty & Shipping
We provide 12 months warranty against manufacturing defects. This covers replacement or repair at our option. Normal wear and improper installation void coverage.
We ship worldwide via FedEx, UPS, or DHL. Tracking number provided within 24 hours. Most destinations deliver in 3-7 business days.
Frequently Asked Questions (FAQ)
What is the minimum target speed for this sensor?
The AI-TEK 70085-1010-428 needs about 100 Hz to produce 2V P-P. At very low speeds, output drops. Use a higher gear tooth count for slow shafts.
Can I use this sensor in explosive areas?
This model has no agency approvals. Do not use in hazardous locations. Choose an intrinsically safe model for explosive environments.
How do I test if my sensor works?
Connect an oscilloscope to the lead wires. Pass a ferrous object quickly across the tip. You should see a voltage spike. No spike means a damaged sensor.
What happens if I reverse the wires?
The sensor still works but with negative polarity. Most counters accept either polarity. Reverse wires if your system requires negative trigger.
How long is the standard lead wire?
Standard lead length is 40 inches (1 meter). Contact us for custom longer leads. Factory modifications take 2-3 weeks.
Selection Guide
Choose the AI-TEK 70085-1010-428 for high temperature applications. It withstands up to 232°C continuously. For lower temperatures (below 100°C), consider economy models. For explosive areas, select hazardous location rated sensors.
Match thread size to your mounting hole. This 3/8-24 thread fits standard industrial ports. For metric threads, see AI-TEK part numbers ending with -M series. Always verify gear tooth geometry matches sensor pole piece.
Contact Information
For inquiries, please contact us: +86 158 8020 0923 (WhatsApp)
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