What Is a Stroboscope? How to Measure RPM Safely and Avoid Harmonics
A stroboscope makes periodic motion appear stationary by flashing at a controlled frequency. It can help evaluate rotating parts without contacting.
CO2 Monitoring for Indoor Air Quality: Sensor Placement, Trends and Interpretation
Indoor CO2 measurements help describe occupancy-related ventilation trends, but a CO2 value alone is not an air-quality or infection-risk verdict..
What Should a Boiler Combustion Test Report Include? Essential Readings and Details
A useful boiler combustion report must show the actual measured conditions, not only a calculated efficiency figure. The report should identify the.
What Should a Food Delivery Temperature Check Record Include? Key Fields
A food delivery temperature check record should connect the actual temperature measurement to a shipment, product, time, method and acceptance.
Why Does Vacuum Rise After Pump Isolation? Causes and Test Tips
A vacuum reading that rises after the pump is isolated does not automatically prove a refrigerant leak. Remaining moisture can evaporate, trapped gas.
Flue Gas Analyzer Readings Explained: O2, CO, CO2 & Efficiency
Flue gas analyzers combine measured combustion-gas values with calculated performance estimates. Oxygen (O2), carbon monoxide (CO) and flue-gas.