Product Overview

The Bently Nevada 991-25-70-03-05 Thrust Transmitter is a specialized solution designed for original equipment manufacturers (OEMs) in applications such as centrifugal air compressors, small pumps, motors, and fans. This compact, loop-powered device generates a straightforward 4 to 20 mA output signal proportional to axial displacement (thrust), facilitating seamless integration into machinery control systems for effective monitoring and protection. Its robust design and advanced features make it an essential component for ensuring reliable operation in industrial environments.

Technical Specifications

• Model Number: 991-25-70-03-05

• Module Type: Thrust Transmitter

• Manufacturer: Bently Nevada

• Condition: Brand New

• Weight: 0.44 kg

• Dimensions: 7.3 cm x 5 cm x 10 cm

• Lead Time: In Stock

• HS CODE: 8537101190

• Product Origin: USA

• System Compatibility: TSI

• Communication Service: Ethernet Router

• Output Signal: 4-20 mA

• Probe Compatibility: 3300 NSv with 7.0 meters (23.0 feet) extension cable

• Measurement Range: 25-0-25 mils

Model Code Breakdown

Examining the model number 991-25-70-03-05 provides insights into its specifications and intended applications:

• 991: Indicates that this product is part of the Bently Nevada thrust transmitter series, known for accurate measurement solutions.

• 25: Represents specific calibration settings or configurations tailored for factory application.

• 70: Denotes the model's capabilities regarding axial displacement measurement.

• 03: Indicates features aimed at improving installation and operational performance.

• 05: Suggests enhancements or specifications that make it distinct within its category.

Installation Recommendations and Wiring Guide

For optimal performance of the Bently Nevada 991-25-70-03-05 Thrust Transmitter, follow these installation and wiring recommendations:

1. Installation Location: Select a location that minimizes exposure to vibrations and allows easy access for maintenance while fitting into confined spaces.

2. Wiring: Ensure secure connections for the 2-wire, loop-powered system, following proper wiring protocols. Connect to the 3300 NSv proximity probe and use compatible extension cables to guarantee accurate signal output.

3. Integration: Utilize the non-isolated "PROX OUT" and "COM" terminals for diagnostics and connect to the coaxial connector for dynamic vibration signals. Ensure that the device is grounded properly.

4. Calibration and Verification: Utilize the non-interacting zero and span potentiometers for precise calibration, and employ the test input pin for verifying signal integrity upon installation or during routine checks.

FAQ

1. What is the primary function of the Bently Nevada 991-25-70-03-05?
   It measures axial displacement (thrust) and outputs a proportional 4-20 mA signal for machinery monitoring.

2. What are the dimensions and weight of the device?
   The dimensions are 7.3 cm x 5 cm x 10 cm, and it weighs approximately 0.44 kg.

3. Can this transmitter operate in humid environments?
   Yes, it features a potted construction designed to withstand up to 100% condensing humidity.

4. What is the measurement range of this transmitter?
   The full-scale measurement range is 25-0-25 mils.

5. What mounting options are available for installation?
   The transmitter supports standard DIN clips and screws, making installation straightforward.