Overview

The 21508-02-12-05-02 Probe Proximity Vibration sensor from Bently Nevada is part of the 7200 5mm / 8mm Series, designed for precise, non-contact displacement measurements. It is ideal for monitoring shaft position and vibration in various industrial machinery.

Performance Characteristics

• Frequency Response: 0 Hz to 10 kHz, with a -5% deviation at 10 kHz
• Scale Factor: 200 mV/mil (7.87 V/mm)
• Linearity: ±0.8 mils (±0.02 mm) with interchangeability errors
• Calibrated Range: 80 mils (2.0 mm)
• Temperature Sensitivity: -3% at +150°F (+65°C) at 50 mil gap

Environmental Durability

• Operating Temperature Range: -30°F to +350°F (-34°C to +177°C)
• Humidity Resistance: 95% non-condensing
• Corrosion Resistance: Resistant to chemicals such as ammonium hydroxide, sulfuric acid, and MEK

Electrical Specifications

• Power Input: -175 VDC to -26 VDC at 12 mA maximum
• Output: 200 mV/mil (7.87 V/mm), measured in increments of 10 mils over the calibrated range
• Frequency Response Range: 0 to 600,000 cpm (0 to 10 kHz)

Physical Specifications

• Weight: 1.3 lbs (0.59 kg)
• Cable Length: 0.5 meters (20 inches)
• Connector Type: Miniature male coaxial connector

Applications & Compliance

• API 670 Compliance: Suitable for turbine, pump, and motor monitoring
• Use Cases: Gas and steam turbines, compressors, electric motors, pumps, centrifuges