AI-TEK 70085-3030-237 Speed Sensor | M16 Thread 13.4V Output

Description

Product Brief

AI-TEK 70085-3030-237 is a tough speed sensor. It gives 13.4 V peak-to-peak output. The M16 x 1.5 thread fits metric ports. This sensor works from -65°C to 95°C. Ideal for turbines, motors, and gearboxes in harsh places.

Technical Data – Key Specs

• Brand & Model
  • Brand: AI-TEK
  • Part Number: 70085-3030-237
  • Series: 70085
  • Type: Passive magnetic pickup
• Electrical Output
  • Guarantee Voltage (P-P): 13.4 V
  • Signal Type: Variable reluctance (no power needed)
  • Frequency Response: 0 Hz to 15 kHz
• Mechanical Dimensions
  • Thread Size: M16 x 1.5 6g
  • Thread Length: 1.5 inches (38.1 mm)
  • Total Sensor Length: 2.75 inches (69.85 mm)
  • Conduit Thread: G 1/2
• Cable & Termination
  • Termination: Attached cable
  • Cable Length: 10 meters (32.8 ft)
  • Cable type: Shielded, oil-resistant
• Temperature & Environment
  • Temperature Rating: -65°C to 95°C
  • Protection: IP67 (dust and water resistant)
  • Humidity: 0-95% non-condensing
  • Vibration: 20 g peak
  • Shock: 100 g
• Performance
  • Measurement Range: 0 to 15,000 Hz
  • Sensitivity: 13.4 V P-P at 1 kHz
  • Linearity: ±1%
  • Resolution: 0.1 Hz (with conditioner)
  • Noise immunity: Shielded cable + twisted wires
• Certification
  • Agency Approval: None (general use)
  • CE marked, RoHS 3 compliant

Installation Guide – Easy Steps

• Mounting
  • Clean the M16 x 1.5 threaded port.
  • Add anti-seize paste on threads.
  • Screw sensor until it touches the gear.
  • Back off 1/4 to 1/2 turn for air gap (0.3-0.5 mm).
  • Tighten locknut to stop vibration loosening.
• Conduit
  • Use G 1/2 conduit fittings.
  • Apply sealant to block moisture.
• Important
  • Max torque: 15 N·m. Do not over tighten.
  • Keep sensor tip clean from metal chips.

Debug & Maintenance – Keep It Running

• Quick Check
  • Use oscilloscope to see output voltage.
  • Expect 13.4 V P-P at 1 kHz speed.
  • Sensor works without external power.
• Maintenance
  • Check cable for cuts every 6 months.
  • Verify air gap with feeler gauge.
  • Wipe sensor face with soft dry cloth.
• Troubleshooting
  • No signal? Check gap, gear type, and cable.
  • Unstable signal? Check shield ground, avoid VFD cables.

Compatibility – Works With Most Systems

• Works with PLC digital input cards (24V DC).
• Compatible with speed monitors: Red Lion, Monarch, Rockwell.
• Direct fit for M16 x 1.5 magnetic pickups.
• Best for steel gear teeth: 8 DP to 48 DP.
• Not for active sensors needing external supply.

Typical Applications – Where to Use

• Steam turbine overspeed protection
• Gas turbine shaft RPM feedback
• Gearbox speed monitoring
• Conveyor roller speed detection
• Industrial generator engine RPM
• Oil and gas pump speed control

Diagnostic Ability – Know the Health

• Self-powered: no battery needed.
• Output voltage changes with speed – helps detect gear wear.
• Track signal amplitude over time to predict failure.
• Check coil resistance (200-400 ohms) for open or short.

Packing List – Box Contains

• 1 x AI-TEK 70085-3030-237 sensor with 10m cable
• 1 x quick start guide (paper)
• 1 x anti-seize packet (on request)
• No mounting bracket (threaded body only)

Warranty & Shipping – What We Promise

• Warranty
  • 12-month limited warranty from ship date.
  • Covers factory defects and material faults.
  • Free replacement or repair.
  • Does not cover cut cables or wrong installation.
• Shipping Carriers
  • FedEx Priority – 2 to 3 days
  • UPS Worldwide Saver – 2 to 4 days
  • DHL Express Easy – 2 to 5 days
  • All orders get tracking and insurance.

FAQ – Expert Answers

• What is the max cable length I can extend?
  • We recommend max 30 meters. Use a signal conditioner for longer runs to avoid voltage drop.
• Why does my sensor read zero at very low speed?
  • Below 100 Hz, output voltage drops sharply. Use a high-sensitivity model for very low speed detection.
• Can I use this sensor with stainless steel gears?
  • No. Only carbon steel or ferrous metals work. Stainless steel is not magnetic enough.
• What if I buy the wrong thread size?
  • Contact us within 30 days. We offer exchange for correct M16 or 5/8-18 version. Buyer pays return shipping.
• How do I store spare sensors?
  • Keep in dry area at room temperature. Avoid sunlight and fumes. Shelf life is 5+ years.

Selection Guide – Choose the Right One

• Thread type first
  • This is M16 x 1.5 metric. For imperial 5/8-18, pick 70085-3030-111.
• Check your cable need
  • 10m cable is good for remote mounting. For 3m, choose 70085-3030-111.
• Temperature range
  • -65 to 95°C fits most factories. For higher heat (150°C), ask for high-temp variant.
• Approval requirement
  • No ATEX on this part. For explosive areas, request 70085-3030-437 (hazardous location version).

Need Help? Contact Our Team

• Call or WhatsApp: +86 158 8020 0923
• Email: sales@plcdcshub.com – reply within 24h.
• We help with cross-reference and troubleshooting.

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