Asset type
Canned motor pump monitoring
SAM4 is the only practical condition monitoring solution for canned motor pumps. These sealless pumps encapsulate the motor rotor inside the process fluid — making vibration sensors impossible. ESA monitors the full unit from the motor control cabinet.
At a glance
- Monitoring method
- Electrical Signature Analysis (ESA)
- Sensor location
- Motor control cabinet (MCC)
- Voltage
- Low and medium voltage
- Drive type
- DOL, VFD
- Equipment types
- Sealless / canned motor pumps
- Faults detected
- 5 fault types
- Typical lead time
- 4–12 weeks before failure
Why monitor canned motor pumps
"The only monitoring option for sealless pumps"
Canned motor pumps have no external shaft seal — the motor and pump are a single sealed unit. You cannot attach vibration sensors. You cannot inspect the rotor. You cannot measure bearing condition without draining the system. ESA is the only technology that provides condition data on these critical assets.
alternative monitoring technologies available for canned motor pumps — ESA is the only practical approach.
typical replacement cost — plus process disruption and potential product loss from emergency shutdown.
SAM4 detection lead time — sufficient to plan replacement and avoid emergency maintenance.
What SAM4 detects on canned motor pumps
Five fault types from one sensor location
| Fault type | What's happening | How SAM4 detects it | Typical lead time | Confidence |
|---|---|---|---|---|
| Bearing degradation | Process-lubricated bearing wear, raceway damage, contamination | Characteristic bearing fault frequencies appear in the motor current spectrum | 4–12 weeks | Full |
| Rotor eccentricity | Rotor wear in the can, thermal distortion, mechanical damage | Eccentricity frequency sidebands appear in the current spectrum as air gap irregularity increases | 4–10 weeks | Full |
| Internal recirculation | Flow path changes from impeller wear, internal leakage, wear ring clearance increase | Load profile deviation — power consumption vs. flow changes as recirculation increases | Weeks–months | Partial |
| Winding faults | Stator insulation breakdown in harsh process environment, contamination, thermal stress | Stator current asymmetry — phase imbalance rises as insulation degrades | 4–12 weeks | Full |
| Efficiency loss | Impeller and rotor wear reducing effective head, increased internal friction and recirculation | Power consumption vs. output deviation tracked continuously | Continuous | Full |
Detection capability depends on drive topology, sampling rate, load variation, and operating conditions. See ESA detection constraints.
Installation on canned motor pumps
30 minutes. No pump access required.
Open the motor control cabinet
SAM4 installs at the MCC — the same panel your electricians already access. No process access needed. No system shutdown.
Clip sensor onto motor supply cables
Current and voltage sensors clip directly onto the existing cabling. No wiring changes. No interruption to pump operation.
Connect and commission
The SAM4 gateway connects via cellular (4G/LTE) — no dependency on your IT network. Monitoring starts immediately. First diagnostic results within 48 hours.
Where canned motor pumps are monitored
Industries using SAM4 on canned motor pumps
See SAM4 monitoring canned motor pumps
A 30-minute demo shows SAM4 running on sealless pumps like yours — with real fault data and real early warning before failure.