Pressure Measuring Instruments: Types, Selection and Differential-Pressure Testing
Select a pressure instrument by what pressure is being compared against. Gauge pressure is relative to ambient atmospheric pressure, absolute pressure.
How to Use an Illuminance Meter to Measure Workplace Lighting: Lux, Work-Plane Setup, and Sampling
Measure illuminance at the actual task surface, not by pointing a meter toward the light source. A lux meter records incident light in lux (lumens/m²).
How to Use a Combustion Analyzer for Boiler Efficiency Testing: Readings, Steps and Limits
A combustion analyzer helps a trained technician evaluate burner operation by measuring flue-gas oxygen, carbon monoxide and temperature. Those.
Temperature Probes Explained: Types, Accuracy and How to Choose
Choose a temperature probe by measurement range, required accuracy, response time, contact method and environment—not by the connector alone..
pH Probe Calibration: Step-by-Step Instructions and Common Errors : How to distinguish calibration from verification
Calibrate a pH probe with fresh buffers covering the expected sample pH. For acidic foods, pH 7 and pH 4 are a common two-point pair. Rinse and blot.