Author Archives: Khanh Nguyen
Dry-Block Calibrator Calibration: Set-Point, Uniformity, Stability
TL;DR: A dry-block calibrator is a reference instrument, and its own accuracy has to be...
Hipot Tester Calibration: Verifying Dielectric Withstand Voltage and Trip Current
How a hipot (dielectric withstand) tester is calibrated: AC/DC output voltage, trip current, timer, uncertainty...
Transporting Calibration Standards Between Sites
TL;DR: A reference standard that arrives shocked, chilled or bounced can read differently before anyone...
RTD Calibration: Wiring, Immersion and Self-Heating Explained
TL;DR: RTD calibration compares a working RTD against a higher-accuracy reference RTD or SPRT at...
Should Your Calibration Lab Adjust an In-Tolerance Instrument? A Practical Adjustment Policy Guide
Should a calibration lab adjust an instrument that is already in tolerance? Compare renew-always, renew-if-failed...
Thermal Imager Calibration: Blackbody Setpoints, NETD and What the Certificate Must Show
How a thermal imager calibration works: blackbody setpoints, radiometric accuracy, NETD, emissivity limits and what...
Cable and Antenna Analyzer Repair: Port, Cable or Cal Kit?
TL;DR: Cable and antenna analyzer repair most often means a worn or damaged test port,...
Torque Transducer Calibration: The Cell and Its Readout Are One Instrument
TL;DR: Torque transducer calibration is a traceable comparison of the cell and its indicator against...
Conductivity Meter Calibration: Cell Constant Drift and KCl Standard Choice
How to verify a conductivity cell constant with KCl standards, control temperature error, and run...
Power Sensor Cal Factors: What They Correct and How They Go Wrong
TL;DR: A power sensor cal factor is the frequency-dependent correction that turns absorbed power into...