Description
Product Overview
The AI-TEK 70085-1010-024 is a high-temperature speed sensor. This magnetic pickup sensor detects gear teeth and rotating targets. It works reliably in extreme environments from -73°C to 232°C. The sensor features a compact 1/4-40 threaded body. Its simple design ensures easy installation on engines and turbines.
Technical Specifications
- Brand: AI-TEK
- Model: 70085-1010-024
- Series: Magnetic Speed Sensor
- Thread Size: 1/4-40 UNF
- Thread Length: 0.687 inches (17.4 mm)
- Sensor Length: 1 inch (25.4 mm)
- Termination: Wire leads (8 inches / 20.3 cm)
- Optional Cable Length: 60 inches (1.5 meters)
- Net Weight: 2 ounces (57 grams) maximum
Electrical Characteristics
- Standard Output Voltage: 4.7 V peak-to-peak (P-P)
- Guaranteed Output Voltage: 0.4 V P-P
- Output Polarity: White lead positive
- DC Resistance: 125 ohms maximum
- Typical Inductance: 5 to 12 mH (reference only)
Environmental & Thermal Limits
- Operating Temperature: -73°C to 232°C (-99°F to 450°F)
- Agency Approval: None (General industrial use)
- Environmental Tolerance: Suitable for high-vibration zones
- Electromagnetic Interference (EMI): Passive design, no active electronics
Installation Guide
- Step 1: Clean the mounting hole thoroughly.
- Step 2: Screw the sensor into the 1/4-40 threaded port.
- Step 3: Leave an air gap of 0.005 to 0.015 inches from the gear tooth.
- Step 4: Tighten the lock nut by hand plus one quarter turn.
- Step 5: Route the wire leads away from high-voltage cables.
Diagnostic Capability & Maintenance
Check the AI-TEK 70085-1010-024 with a simple ohmmeter. A reading above 125 ohms suggests an open coil. Use an oscilloscope to verify the output voltage. A weak signal (below 0.4V P-P) means the air gap is too large. Clean the sensor tip regularly if you work in dusty environments.
Typical Applications
- Gas and steam turbine speed monitoring
- Diesel engine RPM measurement
- Gear tooth detection on conveyors
- Rotary pump speed feedback
- Compressor shaft speed control
Compatibility Information
The sensor works with most PLCs and tachometers. It requires a passive input card or a signal conditioner. The AI-TEK 70085-1010-024 directly replaces old magnetic pickups with 1/4-40 threads. Do not use it with active sensors requiring external power.
Package Contents
- 1 x AI-TEK 70085-1010-024 Speed Sensor
- 1 x Lock nut (1/4-40 thread)
- 1 x Installation data sheet
- 1 x Quality assurance test report (non-certified)
Warranty & Shipping
We provide a 12-month warranty against manufacturing defects. This warranty does not cover mechanical damage or incorrect installation. We ship worldwide using FedEx, UPS, and DHL. Express delivery usually takes 3 to 7 business days.
Frequently Asked Questions (FAQ)
- Q1: Why is the guaranteed output only 0.4V P-P?
A: The sensor works at very low speeds. At 0 RPM, the output voltage is zero. The 0.4V rating ensures reliable triggering for most PLCs. - Q2: Can I cut the wire leads to make them shorter?
A: Yes, you can cut and strip the leads. Seal the cut end with heat shrink tubing to protect against moisture. - Q3: Does this sensor work with a 24V DC power supply?
A: No, this is a passive magnetic sensor. It generates its own voltage and needs no external power. - Q4: How do I know if the sensor is failing?
A: Measure the DC resistance. Normal range is 100 to 125 ohms. A dead short or open coil means you need a replacement. - Q5: What is the maximum air gap distance?
A: Keep the gap under 0.020 inches for a strong signal. Larger gaps reduce the output voltage below 0.4V P-P.
Expert Selection Guide
Choose the AI-TEK 70085-1010-024 for extreme temperature applications. Do not use this model if you need agency approval (no CSA/UL). Select a longer sensor if your mounting boss has thick walls. For oily environments, add a sealing washer to the 1/4-40 thread. Always buy a spare sensor for critical rotating machinery.
Need Help?
For technical support or volume pricing, please contact us.
Inquiries: +86 158 8020 0923 (Click for WhatsApp)
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