There is described herein a method for calibrating gas flowmeters comprising only one calibration procedure performed at the device level. The step of calibrating the differential pressure sensor itself may be omitted, and the design of the sensor may therefore be simplified by eliminating the sensor...
Method and device for the calibration of flowmeters for gases The constant gas flow of a supercritical nozzle into a vacuum is used for the calibration of flowmeters for gases. The vacuum is generated in a vessel by m... T Kayser,KD Eiermann 被引量: 0发表: 1987年 Method and device ...
ASME PTC 19.5 Procedures for Application of Laboratory Calibrations of Differential Pressure Flow Meters 来自 掌桥科研 喜欢 0 阅读量: 158 作者:JR Friedman,D Keyser 摘要: Performance Test Codes require primary mass flow accuracies that in many applications require the laboratory-quality calibration of...
A robust and fully commercial on-site calibration of flow meters with traceable reference to industry standards has finally been developed over 25 years and 10,000 calibrations by a company in Finland. Although the value has been well proven in Finland and surrounding count...
GMT flow meters Turbine flow meters Bubble generators Although the majority of gas calibration is carried out on compressed air we have limited capabilities for calibration on other gases up to 50 L/min. These gases include Argon, Carbon Dioxide, Helium, Nitrogen, Nitrous Oxide and Oxygen. ...
In the case of the Coriolis and thermal massflowmeters, the usual method of calibrating these while in situ in their normal measurement position is to provide a diversion valveafter the meter. Duringcalibration procedures, the valve is opened for a measured time period to allow some of the flu...
Apply more speed-typeflow measurementmethods. For current flowmeters, standard throttling devices do not need to be tested. The remaining flowmeters are almost always calibrated at the factory. During the use of the flowmeter, it should also be calibrated frequently. ...
Keywords: calibration of multi-hole probes; airspeed variations; turbulence measurements; 3D wind vector measurement; wind turbine wake; tip vortex; flow probes; unmanned aerial systems (UAS); unmanned aerial vehicles (UAV)1. Introduction For environmental science in the atmospheric boundary layer (ABL...
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their quality control guidelines or have written ISO 9000 procedures for the intervals of their flowmeter calibrations. The most common interval is an annual calibration. However, many end-users have their flowmeters calibrated semi-annually or even quarterly depending on...