AI-TEK 70085-3030-211 Speed Sensor | 9.4V P-P Passive Pickup

9.4V P-P guaranteed output. Passive magnetic pickup with 10-meter cable. Use for heavy engines and turbines. Works from -65°C up to 95°C.

Technical Specifications

• Brand & Model
  • Brand: AI-TEK
  • Part Number: 70085-3030-211
  • Series: 70085 high-output magnetic pickup
• Output Ratings
  • Guaranteed Voltage (P-P): 9.4 V
  • Standard Output: 40 V (P-P) typical at high speed
  • Passive design – no external power needed
• Mechanical & Thread
  • Thread Size: 5/8-18 UNF
  • Thread Length: 1.5 inch (38.1 mm)
  • Sensor Length: 2.75 inch (69.8 mm)
  • Conduit Thread: 1/2 NPT for easy installation
• Cable Details
  • Termination: Cable (integral, not connector)
  • Cable Length: 10 meters (32.8 ft)
  • Oil-resistant jacket, shielded option available
• Environmental Limits
  • Temp Rating: -65°C to +95°C (-85°F to 203°F)
  • Agency Approval: None (general industrial use)
  • Resistant to humidity and vibration

Key Features

• No power supply needed – works with AC speed monitors
• 1/2 NPT conduit thread for tough industrial enclosures
• Long 10m cable saves extension wiring cost
• Guaranteed 9.4V P-P ensures reliable low-speed detection
• Light and compact: fits tight spaces

Installation Notes

• Use 5/8-18 threaded hole. Apply anti-seize on threads.
• Set air gap: 0.005 to 0.020 inch from gear tooth.
• Connect cable to PLC or tachometer input (AC coupled).
• For conduit, use 1/2 NPT fitting to seal the sensor.

Compatibility

• Works with all AC speed switches, overspeed relays, counters.
• Direct replacement for many AI-TEK 70085 cable versions.
• Target gear material: ferrous steel only (carbon or stainless).

Shipping & Warranty

• Warranty: 12 months from delivery. Covers defects.
• Shipping carriers: FedEx, UPS, DHL worldwide.
• Fast dispatch: 1-2 business days. Tracking provided.

Frequently Asked Questions

• Q: What is the minimum speed to get 9.4V output?
  A: About 250 RPM with 60-tooth ferrous gear. Lower speed gives less voltage.
• Q: Can I cut the 10m cable shorter?
  A: Yes, but you must seal the cut end. Shorter cable may increase output slightly.
• Experience-based Q: My sensor reads noisy signal. What can fix it?
  A: Use shielded cable and connect shield to ground at one end. Keep away from VFD cables.
• Selection Guide Q: This model or 70085-1010-018? Which to choose?
  A: Pick 70085-3030-211 if you need long 10m cable and 1/2 NPT conduit. Pick the other for short thread and connector.
• Q: Does warranty cover cable damage?
  A: No, warranty covers sensor internal failure only. Cable cuts or crush are not covered.
• Q: How to test this sensor before installation?
  A: Connect an oscilloscope to the cable. Pass a steel screw across the tip. You will see AC pulses.

Selection Guidance

• Need 1/2 NPT conduit? This is the right 70085-3030-211 model.
• For temperatures above 95°C, pick high-temp sensor (not this one).
• If you need a quick-disconnect, choose the connector version (70085-1010-018).
• For very long cable runs >10m, use this sensor and add a signal conditioner.
• Order spare cable glands for 1/2 NPT separately.

Quick Diagnostics

• Check output with a multimeter in AC mode (should show millivolts at low speed).
• Inspect cable for cuts or pinch points.
• Measure resistance between cable leads: typically 130-200 ohms (open = bad).

Need Help?

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