AI-TEK 70085-1010-355 Speed Sensor | 55V P-P Output

AI-TEK 70085-1010-355 Speed Sensor

55V peak-to-peak output. Passive magnetic pickup with wires termination. Great for tight spaces. Weight only 2 oz max.

Technical Specifications

• Brand & Model
  • Brand: AI-TEK
  • Part Number: 70085-1010-355
  • Series: 70085 high-sensitivity magnetic pickup
• Output Performance
  • Standard Output: 55 V (P-P)
  • Guaranteed Point Output: 4.2 V (P-P)
  • Output Polarity: White lead positive
  • Passive design – no power supply needed
• Electrical Data
  • DC Resistance: 960 ohms max
  • Typical Inductance: 125 mH ref
• Mechanical & Thread
  • Thread Size: 3/8-24 UNF (fine thread)
  • Thread Length: 0.812 inch (20.6 mm)
  • Sensor Length: 1.252 inch (31.8 mm)
  • Net Weight: 2 oz max (57 g)
  • Termination: Wires (not connector or cable)
• Lead & Wire Lengths
  • Lead Length (-086 variant): 18 inches (45.7 cm)
  • Total Cable Length (-355 variant): 40 inches (101.6 cm)
  • Flexible wire leads for easy connection
• Environmental Range
  • Operating Temperature: -55°C to +107°C (-67°F to 225°F)
  • Agency Approval: None (reliable for general industry)
  • Sealed body – resists oil and moisture

Key Advantages

• Very small size fits narrow mounting spots.
• High 55V output for long cable runs.
• Wire leads allow direct soldering or terminal block.
• Works with most AC speed monitors and PLCs.
• Low weight reduces stress on engine mounts.

Installation Guide

• Use 3/8-24 threaded hole. Clean threads before install.
• Set air gap: 0.005 to 0.015 inch from ferrous gear.
• Connect white lead to signal input (positive polarity).
• Connect other lead to common or ground.
• Do not exceed torque 5 Nm (44 in-lb).

Compatibility

• Works with any AC-coupled tachometer or overspeed relay.
• Replaces many AI-TEK 70085 wire-lead models.
• Target: ferrous steel gears, shafts with keyways.

Shipping & Warranty

• 12-month warranty from delivery date. Covers factory defects.
• Shipping options: FedEx, UPS, DHL with tracking.
• Same-day dispatch for orders before 2 PM EST.

Frequently Asked Questions

• Q: What speed gives the guaranteed 4.2V output?
  A: About 200 RPM with a 60-tooth gear. Lower speed gives less voltage.
• Q: Can I extend the wire leads?
  A: Yes. Use shielded twisted pair. Keep total length under 100 feet.
• Experience-based Q: My reading is unstable at low RPM. Why?
  A: Reduce air gap to 0.008 inch. Also check gear runout.
• Selection Guide Q: This 70085-1010-355 vs 70085-1010-018?
  A: Choose -355 for tiny 3/8-24 threads and wire leads. Choose -018 for 5/8-18 threads and connector.
• Q: Does the warranty cover wire damage?
  A: No. Warranty covers sensor coil failure only. Wires damaged by pulling are not covered.
• Q: How to test before mounting?
  A: Move a steel bolt quickly across the tip. Connect oscilloscope to wires. You will see pulses.

Selection Guidance

• Need tiny thread 3/8-24? This 70085-1010-355 is your choice.
• For temperatures above 107°C, pick a high-temp sensor.
• If you need a connector, choose 70085-1010-018 version.
• This 2 oz weight perfect for vibration-prone machines.
• Order spare wire nuts or terminal blocks separately.

Diagnostic Tips

• Check DC resistance across wires: should be 700-960 ohms. Open circuit = bad coil.
• Spin a gear near sensor tip at hand speed, measure AC voltage (should be >100 mV).
• Inspect wire insulation for cuts or melting.

Get Support

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