Overview

This guide covers the installation of the Bently Nevada 3300 Proximity Sensor, ensuring it operates in an optimal environment. The proximity sensor is critical for monitoring machinery, and proper installation is key to achieving accurate readings and reliable performance.

Environmental Considerations

To ensure accurate readings and longevity of the Bently Nevada 3300 Proximity Sensor, it should be installed in an environment free from external interferences. This means placing it in a non-hazardous area with no corrosive gases, minimal vibration, and a stable temperature similar to room temperature. Using a dedicated installation box for the sensor is recommended to protect it from environmental factors.

Grounding and Interference Shielding

Single-Point Grounding

Interference from different ground potentials can be a significant issue. Implementing single-point grounding is crucial to mitigate this problem. Proper grounding helps in shielding the sensor from external electromagnetic interferences, ensuring accurate signal transmission.

Consolidated Installation

For enhanced shielding and reduced installation costs, it is advisable to install multiple sensors within the same installation box. This approach not only simplifies cable management but also facilitates easier maintenance and inspection. Ensure that sensors do not touch each other within the box to maintain electrical insulation.

Cable Length and Routing

Standard Cable Lengths

According to API670 standards, the installation boxes should ideally be positioned on the same side of the machine to simplify cable routing and maintenance. When ordering, consider the required cable length. Typically, a 5-meter cable suffices, but a 9-meter cable is available if a longer reach is needed.

Cable Connection

The Bently Nevada proximity sensors, such as the 7200 and 3300 series, are compatible with standard installation dimensions. They are connected to monitoring instruments using a three-core shielded cable. The standard wiring is as follows:

• Red wire to power (Ut terminal)
• Black wire to signal ground (COM terminal)
• Yellow wire to signal output (OUT terminal)

Wiring and Signal Transmission

Color-Coded Wiring

Using color-coded wires based on the 16AG multi-core shielded cable standard simplifies installation. If other cable types are used, ensure a uniform connection scheme to avoid wiring errors. The shield of the cable should be grounded at the monitoring instrument end only, to prevent ground loops.

Distance Limitations

The maximum allowable distance between the sensor and the monitoring instrument is 300 meters. Exceeding this distance may result in significant signal attenuation. While incorrect wiring won't damage the sensor, it will lead to improper system functioning, so double-check connections during installation.

Best Practices and Unique Insights

Thoughtful Installation Planning

When planning the installation, consider future maintenance needs. Positioning the installation boxes on the same side of the machine, as per API670 recommendations, facilitates easier access for inspections and repairs.

Optimized Cable Management

Consolidating multiple sensors in a single installation box not only reduces material costs but also improves electromagnetic compatibility (EMC) performance by minimizing the number of external cables exposed to potential interference sources.

Conclusion

Proper installation of the Bently Nevada 3300 Proximity Sensor involves careful consideration of the environment, grounding practices, cable management, and wiring protocols. Following these guidelines will ensure reliable operation and accurate data collection, crucial for effective machinery monitoring and maintenance.

Followings are popular Bently Nevada Proximity Sensor, Probe and Cable that Ubest Automation Limited supplies. For more information on these products or to place an order, please contact our sales team at sales@ubestplc.com.