Digital regulated gas dispensing apparatus with a MEMS mass flow meter

A regulated digital gas dispense apparatus to replace a low pressure gas gauge and to continuously and precisely register an instant gas dispensing mass flowrate and a totally accumulated dispensed gas mass volume comprising:

• one MEMS gas mass flow sensing unit having a centralized main inlet flow channel that re-partitions a gas flow into plural side flow channels to make the side flow channels further release the gas flow into outlets;
• one MEMS mass flow sensing chip operating with calorimetric thermal mass flow sensing principle, which is placed at a side wall on one of the side flow channels;
• the centralized main inlet flow channel is connected to an outlet of a gas supply line or to another outlet of a manual gas pressure regulating valve;
• shape of the side flow channels is made into a venturi structure for flow stability;
• the side flow channels that re-partition the gas dispensing is in plural numbers, and at least eight of the plural side flow channels symmetrically distributed around the centralized main inlet flow channel in a circular configuration;
• the instant gas dispensing mass flowrate being adjusted via the numbers of the side flow channels that re-partition the flow from the centralized main inlet flow channel;
• diameter of each the side flow channels is identical and is from a range of 1 mm to 10 mm;
• one electronics control unit that acquires the instant gas dispensing mass flowrate and the totally accumulated dispensed gas mass volume;
• one local display that shows the instant gas dispensing mass flowrate and the accumulated dispensed gas mass volume;
• one Bluetooth Low Energy device wirelessly transmits data of the instant gas dispensing mass flowrate and the accumulated dispensed gas mass volume to a smart device;
• one physical data port is configured to download the data of the instant gas dispensing mass flowrate and the accumulated dispensed gas mass volume;
• one physical button that allows users to program a desired receiving data format which includes to allow the users to set password for data security;
• one exchangeable base which is connected with the MEMS gas mass flow sensing unit and have customized mechanical configuration to replace low pressure gauge;
• and
• one complete enclosure which connects components for being constituent into a complete and stand-alone mass flow meter system;
• wherein the enclosure meet safety requirements for medical and industrial applications;
• wherein the data of the instant gas dispensing mass flowrate and the accumulated dispensed gas mass volume is configured to relay to a user via a smart device having an APP connected via the embedded Bluetooth Low Energy device;
• wherein the data of the instant gas dispensing mass flowrate and the accumulated dispensed gas mass volume further relays to a third party of interest via data streaming to a cloud data center that enables optimized management for gas dispensing.