991-25-50-01-05 Bently Nevada | 991 Thrust Transmitter

Overview

Designed for precise axial displacement monitoring, the Bently Nevada 991-25-50-01-05 Vibration Transmitter delivers reliable 4–20 mA output signals. Ideal for industrial applications, it supports DIN-rail mounting and operates in harsh environments with certifications including CSA, ATEX, and ABS maritime approval. The transmitter provides non-contact vibration measurement using a 3300 NSv Proximity Probe and extension cable.

Technical Specifications

• Brand: Bently Nevada
• Model: 991-25-50-01-05
• Model Suffix Breakdown:
  • -25: 25-0-25 mils (0.6-0-0.6 mm) full-scale range
  • -50: 5.0 m (16.4 ft) system length
  • -01: 35 mm DIN-rail clips
  • -05: Certifications (CSA Div. 2, ATEX Zone 0/2, ABS)
• Output Signal: 4–20 mA (2-wire)
• Input Power: +12 to +35 Vdc
• Linear Range: 0.25–1.65 mm (Prox Out)
• Accuracy: ±1.5% of full scale
• Max Loop Resistance: 1,000 Ω at 35 Vdc
• Operating Temp: -35°C to +85°C (-31°F to +185°F)
• Storage Temp: -51°C to +100°C (-60°F to +212°F)
• Weight: 0.43 kg (0.9 lb)
• Current Limiting: 23 mA (typical)
• Response Time: <100 µs (Not OK to <3.6 mA)

Certifications & Compliance

Approved for hazardous locations with CSA Division 2, ATEX Zone 0/2, and ABS maritime standards. Suitable for oil/gas, marine, and heavy machinery applications.

For more detailed information:991 Thrust Transmitter Datasheet