Bently Nevada|149758-01|Proximity Probe

Bently Nevada 149758-01 3300 XL 8mm Proximity Probe Specifications

Description
The Bently Nevada 149758-01 is a 3300 XL 8mm proximity probe, part of an advanced eddy current transducer system designed for precise vibration and position measurements in industrial applications such as turbines, compressors, and motors. It provides reliable data for machinery health monitoring to ensure operational efficiency and safety.

Features

• High-performance eddy current measurement for accurate vibration and position data
• Interchangeable components without need for calibration or matching
• Robust, corrosion-resistant gold-plated connectors for durability
• Extended temperature range options for extreme environments
• Compliant with API 670 Standard for mechanical configuration, accuracy, and temperature stability

Technical Specifications

Electrical Specifications

• Nominal Probe DC Resistance (R_PROBE)

  • 7.45 ± 0.50 Ω (0.5m length)
  • 9.87 ± 0.50 Ω (9.0m length)

• Incremental Scale Factor (ISF)

  • 7.87 V/mm (200 mV/mil)
    • ±5% (1m / 5m systems)
    • ±6.5% (9m systems) over 0°C to +45°C

• Deviation from Best Fit Straight Line (DSL)

  • ±0.025 mm (1m / 5m systems)
  • ±0.038 mm (9m systems) at 0°C to +45°C

• Linear Range

  • 2 mm (80 mils), from 0.25 mm to 2.3 mm (10 to 90 mils)

• Frequency Response

  • 0 to 10 kHz
  • +0, -3 dB with up to 305 m (1000 ft) field wiring

• Minimum Target Size

  • 15.2 mm (0.6 in) diameter (flat target)

• Minimum Shaft Diameter

  • 50.8 mm (2 in), recommended 76.2 mm (3 in)

Mechanical Specifications

• Probe Case Material

  • AISI 303 or 304 stainless steel

• Probe Tip Material

  • Polyphenylene sulfide (PPS)

• Cable Specifications

  • 75Ω triaxial
    • FEP insulated (standard)
    • PFA insulated (ETR)
  • Lengths: 0.5, 1, 1.5, 2, 5, 9 m

• Minimum Cable Bend Radius

  • 25.4 mm (1.0 in)

• Tensile Strength

  • 330 N (75 lbf) probe case to lead
  • 270 N (60 lbf) at probe lead to extension cable connectors

• Connector Material

  • Gold-plated brass or beryllium copper

• Maximum Connector Torque

  • 0.565 N·m (5 in·lbf)

• Probe Case Torque

  • Standard forward-mounted:
    • Up to 33.9 N·m (300 in·lbf) recommended
    • 11.2 N·m (100 in·lbf) rated
  • Reverse-mount:
    • 22.6 N·m (200 in·lbf) recommended

Environmental Limits

• Probe Temperature Range

  • Standard: -52 °C to +177 °C (-62°F to +350°F)
  • ETR:
    • Cable: -52 °C to +260 °C (-62°F to +500°F)
    • Probe tip: up to +218 °C (+425°F)

• Relative Humidity

  • Less than 3% change in Average Scale Factor (ASF) at 93% humidity
  • Per IEC 68-2-3 for 56 days

Weight

• Probe: 323 g (11.4 oz)
• Extension Cable:
  • Standard: 34 g/m (0.4 oz/ft)
  • Armored: 103 g/m (1.5 oz/ft)
• Total System Weight: 0.7 kg (1.5 lb)