Industrial Maintenance Library

pH / Conductivity / Analytical Instrument PM Checklist
pH / Conductivity / Analytical Instrument PM Checklist
⚠️ Disclaimer: These tasks are guidelines only. They do not include lockout/tagout (LOTO), energy isolation, or other safety requirements. Review and verify suitability for your specific equipment and application. Add... Read more...
Vortex Flow Meter PM Checklist: The Meter That Keeps Reading Long After It Stops Being Right
Vortex Flow Meter PM Checklist: The Meter That Keeps Reading Long After It Stops Being Right
No moving parts means no maintenance. That's the assumption, and it's why vortex meters drift for years without anyone noticing. Fouled shedders, vibration false counts, and gaskets in the bore... Read more...
Vibration Sensor / Accelerometer PM Checklist
Vibration Sensor / Accelerometer PM Checklist
A vibration sensor that's come loose doesn't fail, it just starts lying. Here's the checklist that keeps your monitoring data honest before a bearing pays the price. Read more...
Sensor Drift: Why It Happens, What It Costs You, and How to Catch It Before It Lies to Your Control System
Sensor Drift: Why It Happens, What It Costs You, and How to Catch It Before It Lies to Your Control System
Your sensor is working. That's the problem. Drift doesn't trip a fault code or set off an alarm — it just slowly moves the reading away from reality while your... Read more...
Industrial Sensor and Instrumentation Preventive Maintenance: Why Most Programs Don't Know When Their Data Is Wrong
Industrial Sensor and Instrumentation Preventive Maintenance: Why Most Programs Don't Know When Their Data Is Wrong
Sensors don't have to stop working to start causing problems. Drift, fouling, calibration decay, and reference degradation can all produce a sensor that sends a clean signal straight into a... Read more...
Industrial Sensor Failure Modes: Why Sensors Stop Telling the Truth Long Before They Stop Sending a Signal
Industrial Sensor Failure Modes: Why Sensors Stop Telling the Truth Long Before They Stop Sending a Signal
A sensor that's still sending a signal isn't necessarily sending the right one. Most PM programs treat sensors like light switches — working or not. That binary thinking is exactly... Read more...
Temperature Sensor / Thermocouple / RTD PM Checklist: What Your Program Should Be Verifying Before the Reading Lies
Temperature Sensor / Thermocouple / RTD PM Checklist: What Your Program Should Be Verifying Before the Reading Lies
Temperature sensors don't fail dramatically. They drift — a degree here, a few degrees there — while the control system keeps adjusting and the process keeps running on bad data.... Read more...
Turbine Flow Meter Preventive Maintenance Checklist: What to Inspect Before the K-Factor Lies to You
Turbine Flow Meter Preventive Maintenance Checklist: What to Inspect Before the K-Factor Lies to You
A turbine flow meter has one moving part. When that rotor fouls, or the K-factor drifts after a power interruption, or the pickup coil loosens just enough — the meter... Read more...
Temperature Control Loop / PID Controller PM Checklist: What Fails When the Loop Is Left Alone
Temperature Control Loop / PID Controller PM Checklist: What Fails When the Loop Is Left Alone
A temperature control loop doesn't fail dramatically. The sensor drifts a few degrees. Someone adjusts the PID gains and doesn't document it. The SSR starts running warm. The process holds... Read more...
Ultrasonic Level Sensor PM Checklist: What to Check, How Often, and What You're Actually Looking For
Ultrasonic Level Sensor PM Checklist: What to Check, How Often, and What You're Actually Looking For
An ultrasonic level sensor can read clean, output a solid signal, and be completely wrong — for weeks. The failure isn't dramatic. It's quiet, consistent, and invisible until it isn't.... Read more...
Speed Sensor PM Checklist: Keep the Signal Honest Before Your Drive Does Something Stupid
Speed Sensor PM Checklist: Keep the Signal Honest Before Your Drive Does Something Stupid
Speed sensors don't seize. They don't make noise. They start lying — sending a clean signal that no longer reflects what the shaft is doing. By the time your drive... Read more...
Specialty Gas Sensor PM Checklist: The Maintenance Tasks That Keep a Lying Sensor from Becoming a Dead Worker
Specialty Gas Sensor PM Checklist: The Maintenance Tasks That Keep a Lying Sensor from Becoming a Dead Worker
A specialty gas sensor that's failing doesn't send a warning. It just starts lying — and if your PM program isn't verifying response, zero stability, and filter condition on a... Read more...