Centrifugal fan monitoring
Centrifugal fan and blower diagnostics: ultrasonic bearing checks, imbalance detection and resonance issues for reliable ventilation and ID/FD fans.
Centrifugal fans in industry
ID/FD fans, process blowers and mine ventilation fans are production-critical. A single walk-down with ultrasound can screen dozens of fans without shutdown.
Common failure modes
Imbalance — from dust buildup, erosion or poor balance after repair.
Bearing wear — often accelerated by imbalance and over-greasing.
Resonance — when running speed hits a structural natural frequency.
Poor lubrication — over-greasing is 2–3× more common than starvation on fans.
SDT diagnostics
SDT340 measures RMS, peak and crest factor, records waveforms and trends against baseline. SDT270 supports large fan populations. LUBExpert cuts grease consumption 25–40% on multi-point fans.
Artesis EMCM
Aerodynamic changes — fouling, imbalance, duct blockage — appear immediately in motor load. Continuous current analytics flags drift before bearing damage spreads.
Field results
Sites with SDT + Artesis on fans report ~70% fewer emergency bearing changes, ~30% less grease use, 5–8% lower fan power from balance correction, and no catastrophic failures on major ID/FD fans.
Olympus — NDT and remote visual inspection
- Thickness gauging — casings, piping and vessels (39DL PLUS)
- Videoscopes — cavities and flow paths on outages (IPLEX One)
Catalogs: NDT · endoscopes · Olympus brand.
SDT, Artesis, Bently Nevada and Olympus for compressors, fans, gearboxes and piping
SDT340 - Advanced Ultrasound Detector
The most advanced ultrasound detector for collecting, analysing and trending data
LUBExpert - Bearing Lubrication Management System
Bearing lubrication programme management with a parts database, Shopping List and Work Orders
Artesis e-MCM — Online Sensorless Motor Monitoring
Online sensorless electric motor monitoring with AI and digital twin
330500 Series — Velomitor Velocity Sensor
Bently Nevada Velomitor velocity sensor for vibration and condition monitoring — supply and service in Kazakhstan.
1900/65A — general purpose equipment monitor
Universal 2-channel vibration monitor with 4–20 mA outputs for general industry
Olympus 39DL PLUS — ultrasonic thickness gauge
Flagship corrosion and precision thickness gauge with Wi-Fi, Bluetooth and up to 60 Hz scanning
Olympus IPLEX One — industrial videoscope platform
10th-generation IPLEX software platform with Swoptix, 3DAssist and Plus/Expert/Prime tiers
Ion Science Panther PRO — helium, hydrogen and refrigerant leak detector
Versatile leak detector using a Micro Thermal Conductivity Detector (MTCD): helium, hydrogen and a wide range of refrigerants via an internal gas table
Ion Science Tiger XTL — affordable handheld VOC detector
Entry Tiger-series PID with Fence Electrode Technology for cost-effective VOC walk-downs across the plant
SDT for centrifugal fan monitoring monitoring
SDT Ultrasound instruments deliver full acoustic condition monitoring in dusty, noisy plants
SDT340 - Advanced Ultrasound Detector
The most advanced ultrasound detector for collecting, analysing and trending data
SDT270 - Ultrasound Detector with Memory
Digital ultrasound detector with data recording and spectral analysis capability
LUBExpert - Bearing Lubrication Management System
Bearing lubrication programme management with a parts database, Shopping List and Work Orders
Artesis — continuous drive monitoring
Artesis EMCM analyzes motor current and voltage without sensors on the machine
Olympus — thickness gauging and videoscopes
When vibration finds a symptom, Olympus confirms metal, weld or internal cavity condition
Olympus 39DL PLUS — ultrasonic thickness gauge
Flagship corrosion and precision thickness gauge with Wi-Fi, Bluetooth and up to 60 Hz scanning
Olympus IPLEX One — industrial videoscope platform
10th-generation IPLEX software platform with Swoptix, 3DAssist and Plus/Expert/Prime tiers
Ion Science — SF6, VOC and industrial leaks
Portable and fixed detectors for SF6 at substations, VOC on chemical sites and refrigerant leaks in HVAC
Ion Science Panther PRO — helium, hydrogen and refrigerant leak detector
Versatile leak detector using a Micro Thermal Conductivity Detector (MTCD): helium, hydrogen and a wide range of refrigerants via an internal gas table
Ion Science Tiger XTL — affordable handheld VOC detector
Entry Tiger-series PID with Fence Electrode Technology for cost-effective VOC walk-downs across the plant
Solutions and resources
Products, related applications and articles for Centrifugal fan monitoring
Recommended products
Related applications
Useful articles
- Greasing pump and fan bearings: schedule vs condition
- What Is Acoustic Bearing Lubrication — and Why It Beats the Calendar
- Fan and Induced Draft Fan Monitoring in Metallurgical Shops | Bently Nevada — KEG TRK
- 3300 XL Eddy Current Probes on Large Fans | Bently Nevada — KEG TRK
- Bearing Monitoring on Auxiliary Motor Drives | Bently Nevada — KEG TRK
FAQ: Centrifugal fan monitoring monitoring
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