Wenzhou quality flowmeter manufacturer in stock | Accuracy level of quality flowmeter

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1. Classification of Air Flow Sensors According to different methods of detecting intake air volume, air flow meters can be divided into two types: volumetric and mass based. Among them, the volumetric type is divided into blade type, Kalman vortex type, and core type; The ridge belt mass type is divided into hot wire type and hot film type. Many cars such as Mercedes Benz, BMW, Volkswagen, etc. use hot film air flow meters. The early fuel injection systems of Macrono engines were divided into two types: D-type (pressure type) and L-type (air flow type). The D-type fuel injection system does not have an air flow sensor. Figure 2-2 shows the basic control architecture of the D-type fuel injection system. Figure 2-4L Basic Control Architecture of Fuel Injection System for L-type Engine The fuel injection system for L-type engine (Figure 2-5) adopts a direct measurement method, which uses an air flow sensor to directly measure the air flow into the intake pipe. L-type sensors are divided into two types: volumetric flow sensors and mass flow sensors. Figure 2-5L Fuel Injection System Million Purchase Subsidy

2. How to Select Flow Meter

Electromagnetic Flow Meter Selection Vortex Flow Quietly Gauge Selection (Vortex Flow Meter) Float Flow Meter Selection (Rotary Flow Meter) Coriolis Mass Flow Meter Selection Thermal (Gas) Mass Flow Meter Selection Ultra Suna Sonic Flow Meter Selection Turbine Flow Meter Selection Precautions

1. Name and Characteristics of the Measuring Fluid (Corrosivity, Viscosity, Wear, etc.)

2. Working Flow Rate (Normal Flow Rate, Maximum Flow Rate, Minimum Flow Rate)

3. Working Pressure (Maximum, Minimum Working Pressure), Special Attention should be paid if negative pr

4. Working temperature (maximum temperature, minimum temperature)

5. The conductivity of the fluid must have a certain conductivity, with a conductivity of ≥ 5 μ S/cm

6. Installation location

7. Power supply method

8 9. Communication method between the process pipeline and the central control room. 3. Accuracy level of the mass flowmeter. The accuracy level of the mass flowmeter is divided into 0.1 level, 0.2 level, 0.5 level, and 1.0 level, and different levels correspond to different application scenarios that require different levels of accuracy. 1. Characteristics of 0.1 level mass flowmeter: It belongs to high-precision instruments, with a measurement error range of ± 0.1%. Application areas: Mainly used in scientific research experiments, aerospace fuel control, and other scenarios that require extremely high precision. For example, rocket fuel injection requires strict assurance that flow errors are within a very small range to ensure launch safety.

2. Characteristics of the 0.2 stage mass flowmeter: error range ± 0.2%, balancing high precision and cost-effectiveness.

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