Micro flow and ultrafine flow measuring device and method

Abstract

The invention discloses a micro flow and ultrafine flow measuring device, which comprises a vacuum degasser, a to-be-measured infusion pump, a pressure sensor, and a damper tube.A high pressure electric switching valve communicates withthe damper tube, a high precision timer, a waste liquid bottle, and a precision injection needle correspondingly; the precision injection needle goes deep into a weighing bottle; the weighing bottle is placed on a precision electronic balance, a to-be-tested liquid (pure water) is placed inside the weighing bottle and sealed with liquid paraffin; the precision electronic balance is placed on a highly stable weighing platform. According to the micro flow and ultrafine flow measuring device, the problems of accuracy and precision of micro flow and ultrafine flow measurement are solved, a means for eliminating air bubbles by the vacuum degasser and the damper tube is introduced, and the highpressure electric switching valve is controlled to switch flow paths through a switch of the highprecision timer, and the influences brought by liquid level rise and buoyancy variationare calculated and subtracted so thatflow rate can be accurately measured. The micro flow and ultrafine flow measuring device has the advantages thatthe measurement is simple and rapid, and the measurement result is accurate and reliable.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to view more

AI Technical Summary

Benefits of technology

This technology improves the stability and reliance for measuring liquids accurately through various techniques such as degasserings or microscope inspections. It uses computerized controls rather than manually controllers, allowing precise timing measurements while maintaining consistently good results over long periods of operation. Additionally, it includes measures like detectors to monitor changes caused by dissolution gases from the sample being analyzed. Overall, this technology enhances efficiency and effectiveness in testing samples used for medical purposes.

Problems solved by technology

This patented technical solution described involves two methods: one called mass method that measures how much fluid has been dispensed from an injector's container (the weight) during each use period, while another approach called flowmetry allows us to determine if any changes have occurred over time due to factors like temperature fluctuations affecting the behavior of the material being delivered into tissue. These techniques help identify issues with current systems such as incorrect dosage rates based on density differences between liquids and errors associated with measuring tiny amounts accurately.

Images