991-01-XX-01-00 | Bently Nevada | 991 Series Thrust Transmitter

Product Overview

The Bently Nevada 991-01-XX-01-00 serves as a critical interface for machinery protection, transforming complex proximity probe signals into a simple 4 to 20 mA DC output. This transmitter monitors axial displacement (thrust) on rotating shafts, providing real-time data to PLCs or DCS units without requiring a separate monitor rack. We supply this unit as 100% Brand New and Original, ensuring maximum equipment uptime and compliance with OEM specifications.

Part Number Breakdown

The 991 series follows a modular configuration logic to suit specific machinery footprints and cable requirements:

Technical Specifications

The 991-01-XX-01-00 integrates robust electronics within a compact housing to withstand harsh plant environments:

• Output Signal: 4 to 20 mA (proportional to axial thrust)

• Operating Temperature: -40°C to +85°C (-40°F to +185°F)

• Input Compatibility: Connects to 3300 XL 8mm Proximity Probes

• Dimensions: 7 cm x 6 cm x 10.2 cm (2.8" x 2.4" x 4.0")

• Weight: 0.46 kg (1.01 lbs)

• Housing Material: Corrosion-resistant polymer

Engineering Advantages

• Seamless Control System Integration: By converting eddy current signals into a 4-20 mA loop, this transmitter eliminates the need for expensive dedicated monitoring racks. It communicates directly with your existing automation hardware.

• Rapid DIN-Rail Deployment: The integrated 35 mm DIN-rail clips allow technicians to snap the unit into place within seconds. This design significantly reduces installation labor in high-density control cabinets.

• Extreme Climate Resilience: The wide operating temperature range (-40°C to +85°C) ensures stable performance in unheated outdoor enclosures or high-heat environments near steam turbines.

• Compact Footprint: The narrow width (6 cm) solves the "limited cabinet space" pain point, allowing for multiple thrust monitoring channels in a single standard enclosure.

FAQs

• Does this transmitter require a separate Proximitor? No. The 991-01-XX-01-00 functions as both the driver and the signal conditioner. It replaces the Proximitor and outputs a 4-20 mA signal directly.

• How do I ensure the transmitter matches my probe? The "XX" in your part number must match your total system length (typically 5.0 meters or 9.0 meters). Using a 5.0m transmitter with a 9.0m cable will result in incorrect displacement readings.

• What is the primary application for this specific model? This unit excels in monitoring centrifugal air compressors, small pumps, motors, and industrial fans where axial shaft movement must be tracked to prevent catastrophic bearing failure.

• Is this product used or refurbished? Absolutely not. We deliver only Brand New, original factory-packed Bently Nevada units. Each device includes the original manufacturer’s quality assurance documentation.