AI-TEK 70085-1010-411 Passive Variable Reluctance Speed Sensor

Product Description

The AI‑TEK 70085‑1010‑411 is a highly reliable passive variable reluctance (VR) speed sensor designed for demanding industrial and aerospace environments. It generates accurate AC voltage signals directly from a moving ferromagnetic target, eliminating the need for external power. Therefore, it ensures continuous, precise speed measurement even in challenging conditions. Its rugged construction provides long-term durability, withstanding extreme vibration, shock, and temperatures up to 425 °C. Moreover, the sensor’s compact design and easy alignment simplify installation across diverse machinery.

Engineered for industrial-grade performance, the 70085‑1010‑411 offers consistent output under high mechanical stress. In addition, its self-powered operation makes it ideal for aerospace engines, automotive wheel hubs, and turbines where reliability is crucial. Users benefit from minimal maintenance requirements, thanks to the sensor’s simple, no-moving-parts construction. For instance, its ability to deliver a standard output of 54 V (P-P) across extreme temperature ranges ensures uninterrupted operation for critical systems.

Key Features

• Passive variable reluctance technology generates reliable AC signals without external power.

• Rugged, sealed design ensures durability under shock, vibration, and high temperatures.

• Compact dimensions (Sensor length: 3.125 in; Thread length: 1.875 in) allow flexible installation.

• Self-powered operation eliminates reliance on external supplies, enhancing reliability.

• Long service life reduces maintenance cycles and lowers operational costs.

• Guaranteed output voltage at 13.4 V (P-P) provides consistent performance for critical applications.

• Wide operating temperature range from -65 to +100 °C accommodates extreme environments.

Technical Specifications

• Manufacturer: AI‑TEK Instruments

• Part Number: 70085‑1010‑411

• Series: 70085 Passive VR Sensors

• Technology: Variable Reluctance (Passive Magnetic)

• Output Voltage (Standard): 54 V (P-P)

• Output Voltage (Guarantee Point): 13.4 V (P-P)

• DC Resistance: 240 Ω max

• Operating Temperature: -65 to +100 °C

• Lead Length: 10 ft (3.05 m)

• Sensor Length: 3.125 in (79.38 mm)

• Thread Length: 1.875 in (47.63 mm)

• Power Requirement: Self-powered

• Construction: Rugged, sealed design with no moving parts

Typical Applications

• Aerospace engines and turbines requiring precise speed measurement.

• Automotive wheel hubs for rotation monitoring and control.

• Industrial machinery with high shock and vibration exposure.

• Turbomachinery monitoring for performance and safety optimization.

• Systems where external power availability is limited or unreliable.

FAQ

Q: Does this sensor require an external power supply?
A: No, the AI‑TEK 70085‑1010‑411 is self-powered and generates its own AC signal.

Q: What environments can this sensor withstand?
A: It operates reliably from -65 to +100 °C and tolerates high vibration, shock, and harsh industrial conditions.

Q: How long is the sensor lead?
A: The standard lead length is 10 ft (3.05 m), allowing flexible placement in machinery.

Q: Can this sensor be used in aerospace applications?
A: Yes, it is specifically designed for aerospace engines and other high-reliability environments.

Q: What maintenance is required?
A: Minimal maintenance is needed due to its rugged, no-moving-parts construction.