Description
Product Overview
- AI-TEK 70085-1010-004 is a robust speed sensor for industrial use.
- It delivers reliable non-contact speed sensing in harsh environments.
- The sensor works with gears or ferrous targets to generate speed signals.
- Users trust it for accurate and durable performance over time.
- This model replaces older units with the same mounting style.
Technical Specifications
- Brand: AI-TEK
- Model: 70085-1010-004
- Output Voltage (Standard): 43 V peak-to-peak
- Guaranteed Output Voltage: 4.3 V peak-to-peak
- DC Resistance: 130 ohms maximum
- Typical Inductance: 32 to 46 mH (reference)
- Output Polarity: Red lead is positive
- Operating Temperature: -73°C to +107°C
- Lead Length: 10 feet (3.05 meters)
- Net Weight: 16 oz maximum
- Thread Size: 5/8-18 UNF
- Thread Length: 1.125 inches
- Total Sensor Length: 2.125 inches
- Termination: 2-wire leads (no connector)
Key Performance Metrics
- Measurement Range: 0 to 20,000 Hz (typical gear tooth)
- Frequency Response: passive design, no lower limit
- Sensitivity: 43 V P-P at high speed, 4.3 V P-P guaranteed
- Linearity: excellent for variable speed monitoring
- Resolution: depends on gear tooth size and gap
- Temperature Range: -73°C to +107°C
- Environmental Resistance: sealed against oil, dust, moisture
- Noise Immunity: passive magnetic pickup, no external power needed
Installation Guide
- Clean the mounting hole before installation.
- Screw the sensor into a 5/8-18 UNF threaded port.
- Leave 1.125 inches of thread exposed as shown.
- Set the air gap to 0.005 to 0.015 inches from the gear tooth.
- Tighten the locknut gently to avoid damage.
- Connect the red lead to the positive signal input.
- Connect the black or shield lead to ground.
Calibration & Maintenance
- No external calibration is required for normal use.
- Check the air gap during routine machine checks.
- Clean the sensor tip with a soft cloth if needed.
- Do not disassemble the sealed sensor body.
- Test with an oscilloscope to see the output waveform.
- Replace the sensor if output drops below 4.3 V P-P.
Compatibility Notes
- Works with most PLCs, counters, and tachometers.
- Compatible with 5/8-18 UNF threaded housings.
- Matches original AI-TEK 70085 series mounting.
- Use with ferrous gears of any module size.
- Not suitable for non-ferrous or plastic targets.
- Output is AC voltage; use a signal conditioner if needed.
Certifications & Approvals
- Agency Approval: None (general industrial use).
- Complies with RoHS standards.
- Manufactured under ISO 9001 quality system.
- No hazardous materials inside the sensor.
Package Contents
- 1 x AI-TEK 70085-1010-004 speed sensor
- 10-foot attached cable (red and black leads)
- Installation note (basic air gap guide)
- No mounting bracket or gear included
Warranty & Shipping
- Warranty: 12 months from delivery date.
- Covers manufacturing defects only.
- Does not cover wear, misuse, or wrong installation.
- Shipping Methods: FedEx, UPS, DHL worldwide.
- Express delivery in 3 to 7 business days.
Typical Applications
- Speed feedback for motors and generators.
- Overspeed detection on turbines and fans.
- Conveyor belt speed monitoring.
- Pump and compressor speed sensing.
- Industrial engine RPM measurement.
- Backup for electronic encoders in harsh areas.
Diagnostic Capability
- Use an oscilloscope to check peak-to-peak voltage.
- Low output (<4.3 V) means wrong air gap or damaged coil.
- No output means open circuit or missing target.
- DC resistance test: should be under 130 ohms.
- High resistance indicates broken wire inside.
- Inductance test: between 32 and 46 mH is normal.
Frequently Asked Questions (FAQ)
- What is the minimum speed this sensor can detect?It has no fixed minimum. At very low speed, voltage drops. Use a conditioner for speeds below 10 Hz.
- Can I cut and extend the cable?Yes, but keep total length under 50 feet. Shorter wire gives better noise immunity.
- Why is my output voltage only 2 V?Air gap is too large. Reduce it to 0.010 inches. Also check gear material and speed.
- Does this work with stainless steel gears?Only if stainless is ferritic (magnetic). Austenitic stainless will not work.
- What happens if I reverse the wires?The signal polarity flips. Most PLCs can handle it, but phase may reverse.
- Can this sensor replace a 70085-1010-003?Yes, the electrical and mechanical specs are identical. Only batch codes differ.
Selection Guide (How to Choose)
- Match thread size to your mounting port (5/8-18 UNF).
- Check your expected max speed. This sensor works up to 20 kHz.
- For very long cables, choose a model with a built-in amplifier.
- If your environment exceeds 107°C, pick a high-temp version.
- For dirty or wet areas, this sealed sensor is a good choice.
- Need a connector? See AI-TEK 70085-1010-005 (different termination).
- For questions, contact an engineer before ordering.
Contact & Support
- For inquiries, reach us via WhatsApp: +86 158 8020 0923
- We reply within 24 hours on business days.
- Technical support includes wiring and troubleshooting help.
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