Submersible pumps operate in some of the harshest industrial environments, where sediment, moisture, and pressure fluctuations can quickly degrade components. Implementing vibration-based condition monitoring helps detect early signs of cavitation, recirculation, and resonance. IMI provides durable submersible sensors to keep these critical pump systems running reliably.
Improve Pump System Uptime with IMI Sensors
Vibration monitoring allows operators to move from time-based maintenance to a proactive strategy guided by real equipment conditions. This helps prevent costly failures, reduces unplanned downtime, and improves overall pump system reliability.
IMI hermetically sealed and fully submersible sensors are engineered to survive corrosive, high-moisture environments—ensuring dependable measurements even in long-term underwater use.
IP68 Protection for Wet and Submerged Environments
IMI submersible accelerometers feature IP68-rated housings, offering protection against dust ingress and prolonged exposure to water. These designs support reliable operation in flooded areas, submerged conduits, pump vaults, sumps, and wastewater environments.
For installations requiring verified high-pressure, long-term submersion, optional hydrostatic testing (available on select models) provides added assurance.
Hydrotested Submersible Accelerometers for Watertight Reliability
Models 604M18, 604M32, and 625M42
These submersible accelerometers undergo hydrostatic pressure testing to verify long-term waterproof integrity under demanding underwater conditions. Each unit is pressure-tested to 500 psi (equivalent to approximately 1,000 feet underwater) using specialized pressure vessels and hydraulic systems under a defined pass/fail protocol. This process validates the integrity of seals, connectors, and molded cables.
Hydrotested models provide added assurance for applications where sensors experience sustained submersion, high pressure, or environments where maintenance access is extremely limited.
Sensor Options for Submersible Pump Monitoring
- Submersible ICP® Accelerometers
- Hermetically sealed, welded stainless-steel sensors designed for continuous underwater use. Available in single-axis and triaxial configurations, with pressure-resistant molded integral cables and optional hydrostatic testing for deep-submersion reliability.
- Submersible and Corrosion-Resistant Cabling
- Molded, watertight cable assemblies engineered for long-term submerged installation, with chemically resistant jackets suitable for wastewater, saltwater, and aggressive industrial fluids.
Selecting an Accelerometer for Submersible Pump Condition Monitoring
When monitoring submersible pumps, select an accelerometer with a linear high-frequency response capability of at least three times the pump's vane pass frequency (vane pass frequency = number of vanes × RPM).
Most general-purpose piezoelectric accelerometers meet these frequency requirements, so environmental durability becomes the primary consideration. IMI submersible accelerometers feature:
- Molded, pressure-resistant integral cables
- Single-axis and triaxial ICP® configurations
- IP68-rated stainless-steel housings for underwater and chemically aggressive environments
- Watertight designs rated for 500 psi on select models
Expert Support for Sensor Selection and Integration
Visit our online shop to explore thousands of sensors in stock and ready to ship. For help selecting the right monitoring solution, please contact us or request a quote.