ニュース

A measured voltage of 220V does not necessarily mean the system is operating stably. When the multimeter display and actual equipment behavior begin to contradict each other, the inspection should be expanded to include load conditions, electrical contact quality, and waveform characteristics rather than repeatedly performing the same voltage measurement.

What is ASTM Type I, II, and III distilled water? Learn about the differences in purity, conductivity, resistivity, and applications of each grade of water used in laboratories, testing, research, and production.

What is the HRC hardness of heat-treated steel? Learn about the hardness of S45C, SCM440, and SKD11, how to evaluate HRC measurement rsults, and the reasons why steel may achieve incorrect hardness after heat treatment.

Rockwell, Brinell, and Vickers are three of the most common hardness testing methods currently used. Learn about the differences in measurement principles, application ranges, and how to choose the right method for each type of material.

HRC, HRB, and HRA all belong to the Rockwell hardness system but are applied to different material groups. Understanding the differences between HRC, HRB, and HRA helps in selecting the correct testing method, accurately reading specifications, and avoiding unnecessary errors in material quality assessment.

Understanding the difference between dBm and dB helps ensure optical measurement data is interpreted consistently and prevents incorrect conclusions during system acceptance testing or maintenance.

The same cable route and the same equipment can produce different measurement results after each reconnection. Repeatability should be checked by taking multiple measurements with the same configuration using a fiber optic cable loss tester before evaluating the quality of the link.

A guide to accurately converting RPM to RCF. Learn the difference between RPM and RCF, the calculation formulas, practical examples, and why you shouldn't rely solely on RPM when using a centrifuge

What is the ideal TDS level for a shrimp tank? Many people spend a lot of time monitoring pH, temperature, and filtration systems but overlook TDS. Only when shrimp grow slowly, their colors fade, they have difficulty molting, or die off sporadically do they start checking their water source and discover that this indicator has long been out of the right range

TDS meters can operate reliably for many years, but the electrodes are the most subject to wear and tear. Each time a measurement is taken, the sensor surface comes into direct contact with water, dissolved minerals, and various other chemical components. This continuous process means the electrode's responsiveness gradually decreases over time.