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 — SDT Ultrasound Bearing Lubrication Assistant
SDT instrument for precision ultrasound-guided greasing of rolling element bearings: tells you when to add grease and when to stop, follows routes from UAS3 and closes each task as GOOD, BAD or SUSPECT.
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
General-purpose Olympus (Evident) ultrasonic thickness gauge, successor to the 38DL PLUS: 0.08–635 mm, up to 60 Hz update, single and dual element transducers, THRU-COAT, Echo-to-Echo, B-scan, up to 792,832 readings, IP67, 0.83 kg.
Olympus IPLEX One — 10th-generation videoscope
The 10th generation of Olympus (Evident) IPLEX videoscopes: Plus, Expert and Prime tiers on one hardware platform, Swoptix optics without withdrawing the probe, 3DAssist, 10.1" 1100-nit tablet, four light sources, up to 360 min runtime.
Ion Science Panther PRO — helium, hydrogen and refrigerant leak detector
Portable leak detector with a micro thermal conductivity sensor (MTCD): helium from 5×10⁻⁶ cc/s, hydrogen from 3.8×10⁻⁶ cc/s, refrigerants via the built-in gas table. 1 s response, up to 20 h runtime, 10 days of logging, Bluetooth.
Ion Science Tiger XTL — handheld PID VOC detector for routine rounds
Simplified version of the Tiger photoionisation detector: 0.1–5,000 ppm range, T90 under 2 s, 80,000 data points in 128 zones, ATEX and IECEx certified, IP65, up to 24 h runtime.
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 — SDT Ultrasound Detector and Data Collector
Handheld SDT ultrasound data collector: 2 channels, up to 100 kHz bandwidth, built-in IR thermometer and laser tachometer, ICP accelerometer input, signal recording for analysis in UAS3. ATEX version available.
LUBExpert — SDT Ultrasound Bearing Lubrication Assistant
SDT instrument for precision ultrasound-guided greasing of rolling element bearings: tells you when to add grease and when to stop, follows routes from UAS3 and closes each task as GOOD, BAD or SUSPECT.
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
General-purpose Olympus (Evident) ultrasonic thickness gauge, successor to the 38DL PLUS: 0.08–635 mm, up to 60 Hz update, single and dual element transducers, THRU-COAT, Echo-to-Echo, B-scan, up to 792,832 readings, IP67, 0.83 kg.
Olympus IPLEX One — 10th-generation videoscope
The 10th generation of Olympus (Evident) IPLEX videoscopes: Plus, Expert and Prime tiers on one hardware platform, Swoptix optics without withdrawing the probe, 3DAssist, 10.1" 1100-nit tablet, four light sources, up to 360 min runtime.
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
Portable leak detector with a micro thermal conductivity sensor (MTCD): helium from 5×10⁻⁶ cc/s, hydrogen from 3.8×10⁻⁶ cc/s, refrigerants via the built-in gas table. 1 s response, up to 20 h runtime, 10 days of logging, Bluetooth.
Ion Science Tiger XTL — handheld PID VOC detector for routine rounds
Simplified version of the Tiger photoionisation detector: 0.1–5,000 ppm range, T90 under 2 s, 80,000 data points in 128 zones, ATEX and IECEx certified, IP65, up to 24 h runtime.
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
- 3300 XL Eddy Current Probes on Large Fans — Bently Nevada
- Bearing Monitoring on Auxiliary Motor Drives — Bently Nevada
FAQ: Centrifugal fan monitoring monitoring
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