This paper introduces the composition and working principle of field service gas flow standard device based on meter. Through analysis uncertainty verification measurement results, it is confirmed that meter method can be applied to flowmeter.

This paper represents a three-phase precision measurement system for the electronic electricity meter based on a digital signal processor (DSP) in combination with a multichannel analog-to-digital converter. The measurement system capabilities include all the usual assessments of the energy, power, voltage and current, but functionality of this precision measurement system is extended into the ...

The authors offer an introductory walk-through of professional audio signal measurement and visualisation using free software. Many users of audio software at some time face problems that requires reliable measurement. The presentation focuses on the SiSco.lv2 (Simple Audio Signal Oscilloscope) and the Meters.lv2 (Audio Level Meters) LV2 plugins, which have been developed open-source since Augu...

The optical fiber power meter (OFPM) is perhaps the most common type of test equipment used to support the development and implementation of optical fiber systems. To address the inherent metrology requirements, NIST has developed and implemented measurement services to help characterize these instruments [1]. These measurement services consist primarily of absolute laser power calibrations usi...

BACKGROUND Glucose meter performance is commonly measured in several different ways, including the relative bias and coefficient of variation (CV), the total error, the mean absolute relative deviation (MARD), and the size of the interval around the reference value that would be necessary to contain a meter measurement at a specified probability. This fourth measure is commonly expressed as a p...