Bently Nevada 991-06-50-01-01 Thrust Monitoring

Engineering Purpose

The 991-06-50-01-01 is a loop-powered transmitter specifically designed for axial thrust (position) monitoring. Unlike radial vibration models, this unit monitors the position of a shaft relative to the thrust bearing. It provides a 4-20 mA output that tracks axial displacement, enabling direct integration into PLCs or DCS to prevent catastrophic internal contact in rotating machinery.

Technical Data Summary

• Component Type: 2-Wire Thrust Transmitter

• System Compatibility: 3300 NSv Proximity Probe

• Part Number: 991-06-50-01-01

• Full-Scale Range: 0.6 mm to -0.6 mm (1.2 mm total span)

• System Length: 5.0 meters (16.4 ft)

• Mounting Type: 35 mm DIN rail clips (01)

• Agency Approval: Standard / Multiple Approvals (01)

• Output Signal: 4-20 mA (Accuracy $\pm$1.5% typical)

• Power Supply: +12 to +35 Vdc

Decoding the Model Configuration

• 991: Bently Nevada 991 series platform for thrust/axial displacement.

• 06: Displacement Range Option. Configured for a 0.6 mm to -0.6 mm measurement envelope.

• 50: Calibrated for a 5.0-meter total system length (Probe + Extension Cable).

• 01: Equipped with 35 mm DIN rail clips for rapid cabinet installation.

• 01: Agency Approval Option. Includes specific international certifications for hazardous or industrial locations.