Choosing the Best Accelerometer Style for Underwater Pump Monitoring

Monitoring the vibration and performance of underwater pumps is crucial for ensuring efficient and reliable operation. By utilizing accelerometers, engineers and maintenance personnel can detect and analyze vibrations that may indicate potential issues or deterioration in the pump system. Understanding machine health through condition monitoring is especially important for underwater pumps due to the significant cost involved in bringing an underwater pump up to the surface for maintenance and repairs.

The most important criteria to understand from your accelerometer manufacturer when outfitting an underwater pump is whether or not that sensor meets the following criteria:

1. Hermetically-Sealed Accelerometers: When it comes to underwater applications, hermetically-sealed accelerometers are highly recommended. These accelerometers are designed to withstand the challenging environment characterized by water exposure and high pressures. The hermetic sealing ensures the sensor's protection against water ingress, preventing damage or malfunction due to prolonged exposure. Hermetically-sealed accelerometers offer robustness and long-term reliability, making them ideal for continuous underwater pump monitoring.
2. Submersible Accelerometers: Submersible accelerometers are specifically designed for immersion in liquid environments, including underwater applications. These sensors are built to withstand the hydrostatic pressure exerted by water and maintain accurate measurements in submerged conditions. Submersible accelerometers are typically constructed with materials that are resistant to corrosion and have waterproof connectors, ensuring reliable operation and longevity. These accelerometers are well-suited for monitoring vibrations in underwater pumps.
3. High-Pressure-Resistant Accelerometers: Underwater pumps often operate at high pressures, which can influence the vibration characteristics of the system. High-pressure-resistant accelerometers are specifically engineered to withstand elevated pressures and maintain accurate measurements. These accelerometers are designed with robust materials and construction to handle the demanding conditions of underwater pump environments. By choosing high-pressure-resistant accelerometers, engineers can effectively monitor the vibrations and performance of pumps operating under significant pressure levels.

At CTC, we are proud to say 100% of our sensors feature a welded/hermetic seal and are helium leak tested to ensure that they will survive even the most demanding environments. Additionally, our sensors feature a 316L stainless steel case, which provides superior corrosion resistance compared to competitor sensors featuring 304 stainless steel cases. We offer sensors with molded integral and armor-jacketed integral cables which are specially designed for underwater applications and sealed to an IP68 rating. Our sensors are submersible up to 200 ft., making them ideal for underwater pump applications.

 

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