Speed sensors are critical components in industrial systems such as turbines, marine propulsion engines, and large rotating equipment. Whether monitoring shaft RPM, turbine blade speed, or crankshaft rotation, these sensors ensure accurate feedback to safety systems, control loops, and monitoring dashboards.
Over time, contamination from oil mist, vibration dust, saltwater residue, or metallic particles can affect the accuracy and reliability of these sensors. This guide will walk you through a proper cleaning process to maintain optimal performance and reduce downtime.
Where Are Speed Sensors Used?
- Gas & steam turbines
- Diesel generators and marine engines
- Rotating pumps and compressors
- Hydraulic systems and gearboxes
- Winches, cranes, and shaft-driven drives
We offer reliable industrial-grade sensors such as the TE / Jaquet DSF and DSD Series for these demanding environments.
Tools You’ll Need
- Allen or Torx drivers
- Non-corrosive electrical contact cleaner
- Microfiber cloths
- Isopropyl alcohol (optional)
- Compressed air (filtered, low-pressure)
- ESD protection, gloves, safety glasses
Before You Begin
- Follow proper lockout/tagout procedures.
- Ensure the machine is powered down and safe to access.
- Consult the machine's manual or OEM drawing for sensor location.
Step-by-Step Cleaning Guide
1. Locate and Access the Sensor
Sensors are typically mounted near a rotating shaft or gear. You may be working with products like:
Tip: Photograph the wiring and sensor placement before removal.
2. Remove the Sensor
- Disconnect the cable connector gently—do not pull on wires.
- Unscrew the mounting bolts carefully.
- If stuck, apply light penetrating oil and wait before removing.
3. Inspect the Sensor
- Check for metal dust, oil residue, or cracks.
- Inspect the wiring and connector for damage.
- If the sensor is compromised, consider a replacement sensor.
4. Clean the Sensor
- Spray a small amount of electrical contact cleaner on the sensing tip.
- Wipe clean with a microfiber cloth.
- Use isopropyl alcohol if needed, but do not immerse the sensor.
- Do not use abrasives, compressed air into connectors, or wire brushes.
5. Clean the Mounting Surface
- Wipe away rust, oil, and dust from the flange or threaded mount.
- Ensure a flush and debris-free surface before reinstalling.
6. Reinstall the Sensor
- Reinsert the sensor in its original orientation.
- Torque bolts to spec (typically 1.5–3 Nm).
- Reconnect the cable securely and apply strain relief if needed.
7. Power Up and Test
- Reconnect power and restart the machine.
- Verify correct sensor output via controller or HMI.
- Check for alarms, missed pulses, or erratic readings.
When to Replace the Sensor
- Cracked housing or damaged wires
- Output signal failure
- Sensor fails resistance/insulation tests
- Operating conditions exceed rated limits
We stock certified sensors with ATEX, SIL3, and DNV ratings, such as:
Summary
Cleaning speed sensors is a simple but vital maintenance task that prevents signal errors, downtime, and damage in high-performance machinery. Regular inspection ensures safety, improves reliability, and reduces costly failures.
Need Assistance or Replacement Parts?
- Explore our speed sensor range
- Contact our technical support for application advice
- Custom cable lengths and international certifications available