CLS Technology & Digital Tools 2 — Questions and Answers
Question 1: Which sensor technology is most commonly used in online oil analysis systems to detect metallic wear particles in real time?
- Infrared spectroscopy sensor
- Inductive wear debris sensor (Correct answer)
- Ultrasonic transducer
- Capacitance probe
Correct answer: Inductive wear debris sensor
Inductive wear debris sensors detect ferrous and non-ferrous metallic particles passing through a magnetic field, enabling real-time condition monitoring.
Question 2: In a computerized maintenance management system (CMMS), what is the primary purpose of linking lubrication tasks to equipment hierarchy?
- To reduce lubricant procurement costs
- To enable traceability and scheduling of PM tasks at the asset level (Correct answer)
- To automate lubricant blending recipes
- To generate MSDS documentation automatically
Correct answer: To enable traceability and scheduling of PM tasks at the asset level
Linking tasks to equipment hierarchy in a CMMS enables precise scheduling, traceability, and reporting of preventive maintenance activities at the individual asset level.
Question 3: A vibration analysis route collected via a handheld data collector shows a spike at 1× running speed. What lubrication-related condition could this indicate?
- Lubricant oxidation
- Bearing fluting from electrical discharge
- Imbalance aggravated by inadequate lubrication film (Correct answer)
- Water contamination in the oil
Correct answer: Imbalance aggravated by inadequate lubrication film
A 1× running speed vibration peak can indicate imbalance, which is worsened when inadequate lubrication increases friction and load on rotating components.
Question 4: Which digital tool allows lubrication technicians to scan a machine tag and immediately retrieve its lubrication specification, interval, and history?
- QR/barcode-linked CMMS mobile app (Correct answer)
- Portable viscometer
- Oil mist generator controller
- Ferrographic analyzer
Correct answer: QR/barcode-linked CMMS mobile app
A mobile CMMS app with QR or barcode scanning links each machine tag to its complete lubrication record, making field access to specifications instant.
Question 5: What does a rising Karl Fischer (KF) titration value trend in periodic oil samples from a gearbox indicate?
- Increasing oxidation byproducts
- Increasing water content in the lubricant (Correct answer)
- Decreasing additive concentration
- Increasing viscosity index
Correct answer: Increasing water content in the lubricant
Karl Fischer titration quantifies water content; a rising trend indicates progressive water ingression into the gearbox lubricant.
Question 6: An automated lubrication system's PLC log shows frequent 'no-flow' fault alarms on a specific lube line. What is the FIRST diagnostic step a technician should take?
- Replace the entire distribution block
- Inspect the check valve and line for blockage or fitting failure (Correct answer)
- Increase pump output pressure system-wide
- Flush all lines with solvent
Correct answer: Inspect the check valve and line for blockage or fitting failure
No-flow alarms on a single line most likely indicate a local blockage, failed fitting, or stuck check valve, which should be inspected before adjusting system-wide parameters.
Question 7: In oil analysis reporting software, what does the acronym 'RUL' stand for in the context of predictive maintenance?
- Remaining Useful Life (Correct answer)
- Recommended Upkeep Level
- Rated Ultraviolet Limit
- Reorder Unit Limit
Correct answer: Remaining Useful Life
RUL (Remaining Useful Life) is a predictive metric estimated from trending condition data to forecast when an asset or lubricant will reach an unacceptable degradation state.
CLS Technology & Digital Tools 2
Which sensor technology is most commonly used in online oil analysis systems to detect metallic wear particles in real time?