Bently Nevada 991-06-50-01-CN 991 Series Thrust Transmitter

Product Overview

The Bently Nevada 991-06-50-01-CN functions as a high-precision, loop-powered device designed to monitor axial shaft position (thrust) on rotating machinery. This transmitter integrates the functions of a proximity sensor and a signal conditioner into a single package, providing a proportional 4-20 mA output directly to your PLC or DCS. We supply this unit as 100% Brand New and Original in its factory-sealed packaging, backed by a full 12-month factory warranty.

Part Number Breakdown

The 991 series utilizes a specific coding structure to match your machinery’s physical and environmental requirements:

Technical Specifications

The following table outlines the critical engineering parameters for the 991-06-50-01-CN:

• Output Signal: 4 to 20 mA DC (Proportional to thrust position)

• Measurement Range: 0.6 mm - 0 - 0.6 mm

• System Compatibility: Designed for use with 3300 XL 8 mm Proximity Probes

• Mounting: Standard 35 mm DIN-rail

• Power Requirement: 17.5 to 30 Vdc at the transmitter terminal

• Operating Temperature: -35°C to +85°C (-31°F to +185°F)

Engineering Advantages

• Simplified Integration: This transmitter eliminates the need for separate Proximitor units. It outputs a standard 4-20 mA signal, allowing you to connect vibration data directly to your control system without expensive rack-mounted monitors.

• Space-Efficient Installation: The 01 mounting option features 35 mm DIN-rail clips, enabling rapid installation in high-density electrical cabinets where space is a premium.

• Hazardous Area Reliability: The "CN" approval ensures the device meets stringent ATEX/IECEx and NEPSI standards. It operates safely in explosive atmospheres, making it the industry standard for oil, gas, and chemical processing.

• Signal Integrity: The system design rejects electromagnetic interference (EMI), ensuring stable axial position readings even in electrically noisy industrial environments.

FAQs

• Does this unit come with the probe and extension cable?

  The 991-06-50-01-CN refers specifically to the transmitter unit. You must match it with a Bently Nevada 3300 XL 8 mm probe and extension cable to complete the 5.0-meter system length.

• Can I use this transmitter in a Zone 0 or Zone 1 environment?

  Yes, the CN suffix provides the necessary ATEX/IECEx and NEPSI markings for hazardous area installations, provided you install it according to the specific agency control drawings.

• What happens if the system length does not match?

  You must use a 5.0-meter total system length (probe + cable). Using a 7.0-meter or 9.0-meter setup with this specific transmitter will cause significant calibration errors and inaccurate thrust readings.

• How do I verify the product is original?

  We ship the unit in its original Bently Nevada factory packaging. The serial number on the device matches the factory test reports and the outer box label, ensuring 100% authenticity.