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1. What is a mass flow meter?
1. What is a mass flow meter? Mass Flow Meter (MFM) is a precision sensor used to quickly and accurately measure the flow rate of process gases. The mass flowmeter mentioned here is mainly used for low pressure, low flow single or mixed gases, with low pressure generally below 1Mpa and a maximum of 3Mpa; The flow range is generally 0.1 sccm to 5000 slpm; Single gases such as common air, helium, argon, etc. require relative dryness and purity; For mixed gases, it is necessary to specify the type and proportion of gases. 2. What parameters can be obtained from a mass flow meter? The Yidu mass flow meter can accurately obtain five major parameters of gas: real-time temperature, pressure, operating flow rate, standard flow rate, and cumulative flow rate. The units of a mass flow meter are generally SLPM (liters per minute under standard conditions) and SCCM (milliliters per minute under standard conditions), both of which are volumetric flow units under standard conditions. The measurement scale is defined as 101.325KPa and 25 ℃. The composition of a mass flow meter: The Yidu laminar flow mass flow meter mainly consists of six parts: laminar flow components, pressure differential sensors, pressure sensors, temperature sensors, circuit design, and software algorithms. The working principle of a 5-layer laminar pressure differential mass flowmeter: The laminar pressure differential principle is designed based on the Hagenbauer law. When the temperature, pipe diameter, and other parameters are constant, the gas is in a laminar state. By obtaining the pressure differential signal at both ends of the laminar flow element, the volumetric flow rate is calculated, and then the standard volume
5, profibus, 0-5V, 4-20mA analog signals or touch screen display panel.
2. What are the components of a CNG dispenser?
1. A compressed natural gas dispenser is a specialized equipment that provides compressed natural gas fuel filling services to compressed natural gas vehicles and is equipped with metering and pricing devices.
. It consists of electronic control devices, filters, one-way valves, solenoid valves, mass flow meters, pressure transmitters, break valves, gun barrels, etc. The following are the main components: a mass flow meter is a measuring instrument that can directly and accurately measure the mass of fluid flowing through it. It is not affected by changes in pressure, temperature, and viscosity during its working process. The solenoid valve for dispenser on the gas dispenser is controlled by an electrical signal to open and close, thereby controlling the opening and closing of the gas circuit of the gas dispenser. 4. Break away the safety device on the coupling valve of the gas dispenser. Under the rated pull-out force, it can be disconnected into two sections and ensure automatic sealing of the opened sections. At the same time, it can be reconnected to ensure the normal use of the gas dispenser. The pressure protection device on the safety valve gas dispenser. When the pressure inside the gas dispenser exceeds the normal working pressure P (i.e. the set opening pr
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