Bently Nevada 991-25-50-01-00 | Thrust Transmitter 25-0-25 mils

Engineering Purpose

The 991-25-50-01-00 is a loop-powered transmitter specifically calibrated for axial displacement (thrust) monitoring. It converts the displacement signal from a 3300 NSv proximity probe into a 4-20 mA output, allowing direct tracking of shaft position relative to the thrust bearing. With its 25-0-25 mils range, it provides critical data to prevent rotor-to-stator contact and monitor thrust bearing wear.

Technical Data Summary

• Component Type: 2-Wire Thrust Transmitter

• System Compatibility: 3300 NSv Proximity Probe

• Part Number: 991-25-50-01-00

• Full-Scale Range: 25-0-25 mils (50 mils total span)

• System Length: 5.0 meters (16.4 ft)

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

• Agency Approval: Not required / Standard (00)

• Accuracy: $\pm$1.5% over full-scale range (typical)

• Power Supply: +12 to +35 Vdc

Decoding the Model Configuration

• 991: Bently Nevada 991 series axial position/thrust transmitter platform.

• 25: Full-Scale Option. Specifically scaled for a 25-0-25 mils measurement envelope.

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

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

• 00: Standard version intended for non-hazardous or Zone 2 / Division 2 locations.