Bently Nevada 990-04-XX-01-055: 2 – Wire Vibration Transmitter

Product Description

The Bently Nevada 990-04-XX-01-05 is a highly efficient 2 – wire vibration transmitter engineered for non – contact vibration measurement in diverse industrial applications. Hailing from the United States, it has earned a reputation for its remarkable accuracy and temperature stability. This transmitter plays a crucial role in converting signals received from proximity probes into a 4 – 20 mA output, enabling real – time and reliable machine vibration monitoring. It is designed to function optimally in harsh industrial settings, including those with potential hazards, making it a versatile choice for a wide range of industries.

Product Parameters

Parameter	Specification
Device Type	2 – wire vibration transmitter
Measurement Range	0 – 4 mils pp (0 – 100 µm pp)
Output	4 – 20 mA, proportional to vibration amplitude
Supply Voltage	12 – 30 VDC
Power Consumption	< 1 W
Operating Temperature	– 40 °C to + 85 °C
Mounting	35 mm DIN rail (with 01 mounting option)
Agency Approvals	CSA Division 2, ATEX Zone 0 and Zone 2, ABS Maritime Approval
Environmental Protection	IP65 rated for protection against dust and water ingress
Material	High – strength aluminum alloy housing
Dimensions	110 mm x 23 mm x 75 mm
Weight	300 g

Product Specifications

Series

The 990-04-XX-01-05 is part of Bently Nevada’s 990 series. This series is focused on providing high – quality vibration monitoring solutions that are reliable, accurate, and suitable for industrial use. The products in this series are designed to work in harmony with other Bently Nevada sensors and monitoring systems, allowing for a comprehensive approach to machinery condition monitoring. They are engineered to meet the specific needs of different industries, from power generation to manufacturing, by offering consistent performance and durability.

Features

Non – Contact Vibration Measurement

By utilizing signals from proximity probes, it can measure vibration without physical contact with the machinery, reducing the risk of interference and wear on the measuring device.

4 – 20 mA Output Standard

The 4 – 20 mA output is a widely recognized industry standard, making it easy to integrate with existing control systems, data loggers, and SCADA (Supervisory Control and Data Acquisition) systems. This compatibility simplifies the process of incorporating the transmitter into an overall machinery monitoring network.

Wide Temperature Stability

With an operating temperature range of – 40 °C to + 85 °C, it can withstand extreme temperatures, ensuring consistent performance in various industrial environments, from cold storage facilities to high – temperature processing plants.

Hazardous Area Approval

The approvals from CSA Division 2, ATEX Zone 0 and Zone 2, and ABS Maritime make it suitable for use in hazardous areas where there is a risk of explosion due to the presence of flammable gases, vapors, or dust, as well as in maritime applications.

Compact and Lightweight Design

Its compact dimensions and low weight make it easy to install and relocate as needed within an industrial facility, without requiring significant modifications to the existing infrastructure.

Function

The primary function of the 990-04-XX-01-05 is to accurately measure the vibration of industrial machinery. It receives signals from proximity probes that are strategically placed on the machinery. These probes detect changes in the distance between the probe and the moving part of the machinery, which are then converted into electrical signals. The transmitter processes these signals and outputs a 4 – 20 mA current signal that is proportional to the vibration amplitude. This output signal can be used by control systems to monitor the machinery’s condition in real – time. If the vibration levels exceed predefined thresholds, the control system can trigger alarms or take corrective actions, such as shutting down the machinery to prevent further damage.

Use

In industrial applications, technicians first select the appropriate proximity probes based on the type of machinery and the specific vibration measurement requirements. These probes are then installed at key locations on the machinery, such as on bearing housings or near rotating shafts. The probes are connected to the 990-04-XX-01-05 vibration transmitter. The transmitter is mounted on a 35 mm DIN rail, typically in a control cabinet. Technicians then configure the relevant settings, such as calibration factors and alarm thresholds, based on the machinery’s operating specifications. Once set up, the transmitter continuously measures the vibration and sends the 4 – 20 mA signal to the control system. Operators can monitor the vibration levels on a control panel or through a SCADA system. Regular calibration and maintenance of the transmitter and probes are carried out to ensure accurate readings.

Application Fields

Power Generation

In power plants, turbines, generators, and pumps are critical components. The 990-04-XX-01-05 is used to monitor the vibration of these machines. By detecting abnormal vibrations, it can prevent issues like blade failures in turbines or bearing damage in generators, ensuring continuous and reliable power generation. For example, in a gas – fired power plant, the transmitter can be used to monitor the vibration of the gas turbine, which is crucial for maintaining its efficiency and preventing catastrophic failures.

Manufacturing

In manufacturing plants, a wide range of rotating machinery, such as motors, conveyor belts, and industrial mixers, is used. The 990-04-XX-01-05 helps in monitoring the performance of these machines. By ensuring that vibration levels are within acceptable limits, it helps in maintaining product quality and preventing production line stoppages due to machinery breakdowns. For instance, in a food manufacturing plant, the vibration of conveyor belts can be monitored to prevent product spillage and ensure smooth production.

Oil and Gas

In the oil and gas industry, compressors, pumps, and drilling equipment operate in harsh and demanding conditions. The 990 – 04 – XX – 01 – 05 is employed to monitor the health of these assets by accurately measuring vibration. This data is used to detect early signs of wear and tear, preventing equipment failures that could lead to costly production disruptions. In an offshore oil rig, the transmitter can be used to monitor the vibration of drilling pumps, which are essential for the extraction process.

In conclusion, the Bently Nevada 990-04-XX-01-05 2 – wire vibration transmitter is a reliable and versatile device for industrial vibration monitoring. Its advanced features, high – quality construction, and wide range of applications make it an invaluable asset for industries that rely on the smooth operation of machinery.