Industrial Maintenance Library

Radar / Micropulse Level Transmitter PM Checklist: What Most Programs Forget to Check
Radar / Micropulse Level Transmitter PM Checklist: What Most Programs Forget to Check
Radar and micropulse level transmitters don't announce their failures. They keep sending a signal — just one that has quietly stopped matching the actual level in the tank. Here's what... Read more...
Rotary Encoder Preventive Maintenance Checklist: Position Feedback You Can Actually Trust
Rotary Encoder Preventive Maintenance Checklist: Position Feedback You Can Actually Trust
Your encoder isn't failing — it's drifting. Position offset accumulates quietly, the controller compensates, and then one day it can't anymore. Here's what your PM should be catching before that... Read more...
Pressure Sensor / Transmitter PM Checklist: What to Check Before Your Process Data Lies to You
Pressure Sensor / Transmitter PM Checklist: What to Check Before Your Process Data Lies to You
Pressure transmitters don't fail loudly. They drift, plug, and read slightly wrong — sometimes for months — while the control system keeps making decisions based on numbers that aren't real... Read more...
Proximity Sensor PM Checklist
Proximity Sensor PM Checklist
A proximity sensor with a dirty face and a healthy LED is still lying to your control system. Contamination, mounting drift, connector corrosion, and logic mismatches all produce faults that... Read more...
pH Sensor / Electrode PM Checklist: What Calibration Can't Fix If You're Not Checking These First
pH Sensor / Electrode PM Checklist: What Calibration Can't Fix If You're Not Checking These First
A pH sensor that's drifting looks exactly like process variation. By the time someone pulls and checks the electrode, it's been lying for weeks — and every control decision made... Read more...
Photoelectric Sensor Preventive Maintenance Checklist: What Most Programs Treat as an Afterthought
Photoelectric Sensor Preventive Maintenance Checklist: What Most Programs Treat as an Afterthought
Photoelectric sensors are everywhere, inexpensive, and easy to ignore — until the line stops for a false trip nobody can explain. Dirty lenses, drifted sensitivity settings, and degraded reflectors don't... Read more...
Oxygen (O₂) Sensor Preventive Maintenance Checklist: What to Check Before the Reading Lies to You
Oxygen (O₂) Sensor Preventive Maintenance Checklist: What to Check Before the Reading Lies to You
An oxygen sensor doesn't announce when it starts lying. It keeps sending a signal — shifted a little, then a little more — until the number your system trusts no... Read more...
ORP Sensor Preventive Maintenance Checklist: What to Check Before the Reading Lies to Your Process
ORP Sensor Preventive Maintenance Checklist: What to Check Before the Reading Lies to Your Process
ORP sensors don't announce when they stop working. The signal stays on, the display still shows a number, and the process keeps running on data that stopped being accurate weeks... Read more...
Magnetic Flow Meter PM Checklist: What Most Programs Check and What They Actually Need to Trend
Magnetic Flow Meter PM Checklist: What Most Programs Check and What They Actually Need to Trend
A mag meter has no moving parts. The assumption is that means less to maintain. What it actually means is that when it starts lying to you, there's nothing mechanical... Read more...
Load Sensor / Load Cell PM Checklist: What to Check, How Often, and What You're Actually Looking For
Load Sensor / Load Cell PM Checklist: What to Check, How Often, and What You're Actually Looking For
A load cell that reads wrong doesn't announce itself. It feeds bad numbers downstream and everything acts accordingly — batching, tension control, scale systems, all of it. Here's what to... Read more...
Level Sensor / Switch PM Checklist: What Fails, What Gets Missed, and What to Check
Level Sensor / Switch PM Checklist: What Fails, What Gets Missed, and What to Check
Level sensors and switches don't announce when they're lying. The signal keeps coming, the control system keeps reacting, and the process keeps running — right up until the tank overflows... Read more...
Combustible / LEL Sensor PM Checklist: Why a Sensor That Reads Zero Can Still Be Lying to You
Combustible / LEL Sensor PM Checklist: Why a Sensor That Reads Zero Can Still Be Lying to You
A combustible gas sensor that reads 0% LEL isn't proof the air is safe — it's proof the display is working. Whether the sensor behind it still functions depends entirely... Read more...