Our hydro sensors help to avoid unplanned outages
When you need to know what’s going on with your hydroelectric generator – especially while it’s in operation – Bently Nevada has you covered with our family of proven Hydro Sensors.
We at Bently Nevada pioneered this space over 50 years ago with the launch of our eddy current proximity transducers – which have since evolved to include dynamic pressure, generator air gap, and isolated stator end winding vibrations due to electromagnetic, mechanical, and gravitational forces.
Our 4000 series capacitive generator air gap sensor sets the standard for real-time air gap measurement between your turbine’s rotor and stator – vital if you want to understand your turbine’s behavior under load. Air gap dimensions along with rotor and stator shape cannot be effectively measured with the generator out of service because of the combined effects of centrifugal, thermal, and magnetic forces. In short: you need real time monitoring to get real, usable data.
Our Hydro Sensors record multiple variables – not just one – so that you can obtain a more accurate understanding of your machinery’s vibration issues. And with increased data and understanding comes the ability to more accurately diagnose a problem, and react accordingly avoiding costly downtime, misdiagnoses, and in some cases avoiding costly tear-down inspections that weren’t needed.
Know your hydro turbine’s health!
Hydro Sensors Product Overview
Displays Dynamic Measurements – Our Dynamic Pressure Sensors display dynamic measurements for hydroelectric turbine or pump monitoring applications. Dynamic measurements are the only measurements that can help you accurately diagnose why your turbine is vibrating while in operation
Monitors Continuously – Our Air Gap Sensor provides monitoring and diagnostic capabilities for both new and existing hydroelectric generators and motors/generators so that you can set effective alarm triggers.
Delivers Cost-Effective Results - Bently Nevada’s Stator End Winding Accelerometer offers a cost-effective way for the accurate monitoring of stator end winding vibration – vibration that that can be detected from electromagnetic, thermal, centrifugal, mechanical, and gravitational forces.
The 4000 Series Air Gap Sensor System provides monitoring and diagnostic capability for all new and existing hydro generators and motor/generators, and fully integrates with the 3500/46M Hydro Monitor and System 1* software
The 4000 Series Air Gap Sensor System provides monitoring and diagnostic capability for all new and existing hydro generators and motor/generators, and fully integrates with the 3500/46M Hydro Monitor and System 1* software. Air gap is a measure of the distance between the rotor and stator in a hydro generator. Monitoring the air gap is critically important because both the stator and the rotor on hydro machines can be flexible and their shape and location are affected by operating centrifugal, thermal and magnetic forces. Air gap measurement is critical because the flexible stator assembly can become non-concentric or out-of-round. The monitor instantaneously measures minimum, maximum and average air gaps, to which the min and max measurements on the rotor pole coincide. The air gap monitoring system provides operations and maintenance personnel with early warning of impending problems with shape and concentricity of the generator rotor and stator. The 4000 Series capacitive sensor is available in two range options. The 20 mm system has a linear range of 18.3 mm, and is appropriate for use on small to medium generators. The 50 mm system has a 45.7 mm linear range, and is suitable for large generators.
Our 330446 Hydro Stator End Winding Accelerometer (and the 330447 Probe) provides a cost-effective and reliable method for monitoring stator end winding vibration. With a dual-axis MEMS capacitive accelerometer, highly electrically insulated probe housing coupled with flexibility and ease of installation - our hydro stator end accelerometer and 330447 probe (for higher temp applications) are perfectly suited for the high electric field environments of hydro generators. The highest degree of accuracy - the accuracy you need when determining proper maintenance and catastrophic failure prevention - is achieved through the use of Pole Passing Frequency (or Forcing Frequency) amplitudes along with acceleration measurements in both the X and Y axis thus ensuring you have a complete overview of any vibration issues.
Unlock the full potential of our Hydro Sensor vibration sensor, When you pair Bently Nevada’s world-class hardware with any of our industry-leading complementary services, you know you’ll be getting the best holistic solution for your plant’s condition monitoring program. Some of our complementary services include:
- Hosted Solutions
- System Maintenance & Availability
- Machinery Diagnostic Services
- Machinery Health Audits
- Remote Monitoring & Diagnostics
- Site Project Management
- Design, Installation & Commissioning
3500 – when combined with the accuracy and real-time monitoring capabilities of our 4000 series Hydro Sensors, our 3550 series family of machinery protection monitoring systems can enable user-programmable alarm setpoints, among others.
1900/65A – Our 8 channel General Purpose Equipment Monitor can take your Hydro Sensor data and communicate those findings via Modbus RTU over serial port and Modbus/TCP over ethernet connections while providing flexible alarm programming, configuration and signal processing typically associated with larger, costlier systems.