Velocity Sensor | AI-Tek 70085-1010-425

AI-Tek Instruments 70085-1010-425 Passive Speed Sensor

The 70085-1010-425 provides reliable speed monitoring with extended thread length for deep mounting applications. This AI-Tek Airpax passive sensor delivers consistent performance across industrial temperature ranges without requiring external power.

Product Overview

This sensor features an extended 3-inch threaded section for applications requiring deep penetration mounting. It maintains stable output characteristics while providing reliable speed measurement in various industrial environments.

Core Specifications

• Manufacturer: AI-Tek Instruments (Airpax)
• Part Number: 70085-1010-425
• Sensor Type: Passive Speed Sensor
• Condition: New Original Factory Packing
• Warranty: 12 Months Factory Warranty

Physical Dimensions

• Thread Length: 3.000 inches (76.20 mm)
• Sensor Length: 4.125 inches (104.77 mm)
• Thread Size: 1-12 UNF standard
• Housing Diameter: 1.125 inches (28.58 mm)
• Unit Weight: 0.52 kilograms
• Cable Length: 12 feet (3.66 meters)

Electrical Performance

• Standard Output Voltage: 63 volts peak to peak
• Guaranteed Output Voltage: 4.9 volts peak to peak minimum
• DC Resistance: 250 ohms maximum
• Typical Inductance: 45 millihenries
• Output Polarity: Blue lead positive
• Frequency Response: 20 Hz to 2,500 Hz
• Measurement Range: 0 to 6,000 RPM
• Response Time: 7 milliseconds maximum
• Output Linearity: ±2.0% of full scale
• Minimum Load Impedance: 8k ohms

Environmental Specifications

• Operating Temperature: -55 to +107 degrees Celsius
• Storage Temperature: -65 to +125 degrees Celsius
• Ingress Protection: IP64 rated
• Housing Material: Carbon steel with nickel plating
• Cable Type: PVC insulated shielded
• Mounting Torque: 35 ft-lbs maximum
• Vibration Resistance: 10g from 10-1500 Hz
• Shock Resistance: 30g for 11 milliseconds
• Humidity Range: 5% to 95% non-condensing

Target Specifications

• Target Material: Ferromagnetic materials
• Optimal Gap Range: 0.5 to 2.0 millimeters
• Gear Tooth Count: 18-90 teeth recommended
• Target Speed: 50 to 6,000 RPM
• Minimum Tooth Width: 3.0 millimeters
• Target Thickness: 5.0 millimeters minimum

Key Features

• Extended 3-inch thread for deep mounting applications
• Stable 63V P-P output for reliable signal transmission
• Low 250 ohm resistance for minimal signal loss
• IP64 protection against dust and water splashes
• Blue lead positive polarity for easy identification
• 12-foot PVC insulated cable included
• Carbon steel construction with nickel plating
• Wide operating temperature range

Industrial Applications

• Heavy equipment speed monitoring
• Industrial gearbox applications
• Marine propulsion systems
• Mining equipment monitoring
• Construction machinery
• Agricultural equipment
• Pump and compressor systems

Installation Guide

• Mount using 1-12 UNF threaded connection
• Apply maximum 35 ft-lbs mounting torque
• Maintain 0.5-2.0mm gap from target surface
• Connect blue lead as positive terminal
• Ensure proper IP64 seal engagement
• Route 12-foot cable with proper strain relief
• Verify target alignment and gap setting
• Test output signal quality after installation

Compatibility Information

• Works with industrial speed monitoring systems
• Compatible with PLC analog input modules
• Connects to digital tachometer displays
• Interfaces with data acquisition systems
• Works with overspeed protection devices
• Compatible with vibration analysis systems

Shipping & Packaging

• Factory sealed protective packaging
• Includes sensor with 12-foot integrated cable
• Installation manual and torque specifications
• 12-month warranty documentation
• Worldwide shipping via FedEx, UPS, DHL
• Standard lead time: 5-7 working days

Frequently Asked Questions

• What is the thread length? 3.000 inches (76.20 mm) threaded section.
• What is the operating temperature range? -55 to +107 degrees Celsius.
• What thread size is used? 1-12 UNF standard thread size.
• How long is the sensor cable? 12 feet (3.66 meters) integrated cable.
• What is the guaranteed output voltage? 4.9 volts peak to peak minimum.