What Does a Gas Leak Detector Look Like
A guide to the physical forms of gas leak detectors and what each shape implies about the job it does.
Read Article→Learning Center
Plain-language explanations of the measurements, sensors and numbers behind environmental monitoring.
What Is a Pyrometer? Infrared Thermometry Explained
A pyrometer infers surface temperature from the infrared energy a target emits, and its accuracy depends on spot size, emissivity and the material being measured.
Read Article→How to Calibrate a Particle Counter
Calibration of a particle counter means matching its laser-scattering response to a reference aerosol, which is a laboratory procedure; owners can verify flow, zero response and repeatability, and should send the unit out for the rest.
Read Article→How to calibrate a multimeter
Calibration is an adjustment against a known reference, and for a handheld multimeter that is a service-centre job; what an owner can honestly do is verify against a reference and keep a record.
Read Article→UEI Test Instruments Combustible Gas Detectors: What They Actually Measure
A combustible gas detector responds to the total concentration of flammable gas in air as a percentage of its lower explosive limit, not to a specific gas, and not to carbon monoxide.
Read Article→Accurate infrared thermometers: what the number actually depends on
A guide to what makes an infrared thermometer reading trustworthy: distance-to-spot ratio, emissivity, field of view and the surfaces where non-contact measurement fails.
Read Article→How Long Do CO2 Monitors Last?
CO2 monitors typically last several years, but the NDIR sensor drifts, the battery degrades and the calibration expires, and each determines a different kind of end of life.
Read Article→What an accurate battery tester actually measures
An explanation of what battery testers measure, where their accuracy comes from, and which instrument answers which question.
Read Article→Oxygen Meter Not Working: What to Check and What the Reading Actually Means
A practical diagnosis of oxygen meter faults, from sensor exhaustion to placement error, with the physics behind each symptom.
Read Article→CO2 Monitor Not Working: What to Check Before You Replace It
A diagnostic guide to CO2 monitors that read wrong, freeze, or fail to alarm, covering sensor physics, calibration, placement and the limits of consumer NDIR instruments.
Read Article→How to Use a Voltage Tester: A Practical Guide to Non-Contact and Contact Testers
How voltage testers detect live conductors, how to prove one dead safely, and where their limits sit.
Read Article→How to Check an Oxygen Meter: Verification, Bump Testing and the Limits of What You Can Do at Home
A practical explanation of how to check an oxygen meter, covering bump testing, calibration, alarm set points and the situations where a single gas detector is not enough.
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