Image Fusion on a Thermal Camera: An Interpretation Aid, Not a Measurement
Image fusion helps you find the hot spot in the scene; the thermal pixel and its emissivity setting decide what the number means.
Read Article→Learning Center
Plain-language explanations of the measurements, sensors and numbers behind environmental monitoring.
Replaceable Sensors and What Plug and Play Really Means
This page separates plug in power, replaceable sensor design and true plug and play behaviour, and explains what each means for a carbon monoxide or gas alarm you already own or are about to buy.
Read Article→Electrochemical Cells Age Whether You Use Them or Not
Electrochemical gas sensors age by design, on a schedule set by chemistry rather than use, so a stored or rarely used detector can be closer to failure than a working one.
Read Article→Stated Sensor Life Against Warranty Term: What the Two Numbers Actually Promise
Sensor life is an expected service interval; warranty is a repair or replacement promise. The two rarely align, and the difference is yours to manage.
Read Article→Why a Dead Gas Sensor Reports Clean Air
Gas sensors usually fail by drifting to zero, not by alarming, so a zero reading is only trustworthy if the instrument proves the sensor is alive.
Read Article→Using outdoor background as a sanity check on your monitor
Outdoor air is a free, roughly known reference for checking whether a CO2 or particle monitor is in the right ballpark, but it cannot replace a proper calibration gas.
Read Article→Why Indoor CO2 Rises Overnight in a Closed Bedroom
Exhaled CO2 builds up overnight because a closed bedroom has little outdoor air exchange and a steady occupant source; the rate of rise tells you the ventilation rate.
Read Article→What CO2 Readings Mean for Ventilation, From Outdoor Background Upward
A guide to interpreting indoor CO2 against outdoor background, with the arithmetic and thresholds that turn a reading into a ventilation decision.
Read Article→Why State of Health Is Computed from Values You Type In
State of health is a computed ratio, not a direct reading, and the values you type in are the denominator that makes the calculation possible.
Read Article→What Internal Resistance Tells You That Voltage Does Not
Voltage is the pressure a battery can produce at rest; internal resistance is the friction that decides how much of that pressure survives when current flows.
Read Article→Why a Lead Acid Tester Cannot Read a Lithium Pack
A lead acid tester cannot read a lithium pack because it measures internal resistance and voltage against a lead acid model, and lithium cells do not follow that model.
Read Article→CCA, Internal Resistance and State of Health: What a Battery Tester Really Measures
A plain explanation of what battery testers measure, how CCA and state of health are inferred from internal resistance, and where the numbers stop being useful.
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