Description
AI-TEK 70085-1010-174 Speed Sensor
This AI-TEK 70085-1010-174 is a passive magnetic speed sensor. It detects ferrous metal targets without external power. The sensor works in extreme temperatures from -65°C to 220°C.
Product Overview
The AI-TEK 70085-1010-174 belongs to the 70085 series. It uses a 3/8-24 thread for easy mounting. This sensor delivers a strong output voltage of 55V peak-to-peak. Its guaranteed output is 3.6V P-P. The white lead provides positive output polarity for correct wiring.
Technical Specifications
- Brand: AI-TEK
- Model: 70085-1010-174
- Type: Passive Magnetic Speed Sensor
- Thread Size: 3/8-24 UNF
- Thread Length: 0.812 inches (20.6 mm)
- Total Sensor Length: 1.252 inches (31.8 mm)
- Termination Type: Wire leads, 60 inches (1.5 meters)
- Output Voltage (Standard): 55 V peak-to-peak
- Output Voltage (Guaranteed Point): 3.6 V P-P
- Output Polarity: White lead positive
- DC Resistance: 705 ohms maximum
- Typical Inductance: 150 mH reference
- Operating Temperature: -65°C to +220°C (-85°F to +428°F)
- Agency Approval: None (General purpose)
- Net Weight: 2 oz. maximum (57 grams)
Key Performance Data
- Measurement Range: Detects ferrous metals from near zero to high speed
- Frequency Response: Passive design supports very wide frequency range
- Temperature Range: -65°C to +220°C for harsh environments
- Environmental Tolerance: Withstands dirt, oil, moisture, and extreme heat
- Noise Immunity: Self-generating signal rejects electrical interference
- Output Signal Type: AC sine wave, amplitude varies with target speed
Installation Guide
- Clean the 3/8-24 mounting hole before installation.
- Screw the sensor in until it touches the gear tooth.
- Back out the sensor by 1/2 to 3/4 of a turn.
- Tighten the lock nut to secure the position.
- Connect the white wire to the positive input of your monitor.
- Connect the black or shield wire to common/ground.
- Do not overtighten beyond 0.812 inch thread depth.
Compatibility & Diagnostic Ability
- Works with tachometers, PLCs, and speed switches.
- Needs a ferrous target like a gear or keyway.
- No external power supply is required for operation.
- Diagnose by measuring DC resistance (705 ohms max).
- Check output voltage with an oscilloscope during machine run.
- Low output often means large air gap or slow target speed.
Typical Applications
- Gas turbine speed monitoring
- Steam turbine overspeed detection
- Compressor shaft speed measurement
- Engine RPM sensing for industrial engines
- Conveyor belt speed monitoring
- Pump and blower speed feedback
Package Contents
- One AI-TEK 70085-1010-174 speed sensor
- Attached 60-inch (1.5m) cable with leads
- Installation data sheet
Warranty & Shipping
- 12-month warranty against manufacturing defects.
- We ship via FedEx, UPS, or DHL with tracking.
- Same-day dispatch for orders before 2 PM.
Frequently Asked Questions (FAQ)
- Does this sensor need a power supply?
No. The AI-TEK 70085-1010-174 is passive and self-generating. - What is the maximum air gap?
Typical gap is 0.005 to 0.020 inches for reliable output. - Can I cut the cable?
Yes, but seal the cut end to prevent moisture ingress. - Why is my output voltage low?
Check the air gap or target speed. Slow speed reduces voltage. - Is this sensor explosion-proof?
No. It has no agency approval for hazardous areas.
Buyer Guide & Selection Advice
- Choose this AI-TEK 70085-1010-174 for high-temperature zones up to 220°C.
- Use a fine-pitch gear (32 pitch or finer) for best low-speed response.
- Match the 3/8-24 thread to your existing mounting port.
- Replace old sensors with worn tips to maintain gap accuracy.
- For explosive areas, select an approved AI-TEK model with certification.
Contact Information
Inquiries: +86 158 8020 0923 (WhatsApp)
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