Flow meter

High-viscosity liquid medium refers to liquids with high viscosity such as crude oil, heavy oil, and residual oil. In the past, volumetric flowmeters were mostly used to measure this type of liquid, and some other flowmeters such as target flowmeters were also used, but these flowmeters directly measured the volume of the liquid, not the […]

Structurally, the sensor and converter form a whole, which is called an integrated electromagnetic flowmeter. The integrated electromagnetic flowmeter can reduce excitation and signal transmission cables during installation and use, save installation costs, and bring convenience to on-site operation and on-site instructions, and its instrument manufacturing cost is relatively low. Therefore, integrated electromagnetic flowmeters are

The oval gear flowmeter is mainly composed of a metering housing, an oval gear rotor, and transmission components. An instrument used for continuous or intermittent measurement and control of liquid flow in pipelines. The structure and working principle of the oval gear flowmeter The main mechanical measurement part of the oval gear flowmeter is the

The oval gear flowmeter measures the flow by means of a fixed volume and has nothing to do with the flow state and viscosity of the fluid. However, changes in viscosity will cause changes in leakage, and excessive leakage will affect measurement accuracy. As long as the oval gear flowmeter guarantees the processing accuracy and

The liquid measured by the turbine flowmeter is generally a low-viscosity (generally less than 15×10-6m2/s), low-corrosive liquid. Although there are turbine flowmeters for various media measurements, the measurement of high temperature, high viscosity, and strong corrosive media still needs careful consideration and corresponding measures. When the medium viscosity v is greater than 15×10-6m2/s, the meter

Advantages (1) High accuracy: gas turbine flowmeter, the full range is generally 1.0%~2.0%, and the high accuracy type is 0.5%~1.0%. Among all flow meters, it is one of high accuracy. (2) Good repeatability, generally up to 0.05% ~ 0.2%. Because of its good repeatability, high accuracy can be achieved after frequent calibration or online calibration,

Installation of Float Flowmeter Float flowmeter should be installed in a place where the environment is lower than 60℃ to prevent the meter from being directly exposed to rain and sun, and in a location that is convenient for installation, operation, adjustment, and safety. The float flowmeter must be installed vertically on a vibration-free pipe,

The main content and methods of the electromagnetic flowmeter verification are shown in the table. Test content Detection method Test purpose Metering performance Volumetric method Verification, standard, factory inspection Weighing method Standard meter method Variable headwater tower method Standard, factory inspection Other properties – Type evaluation, product quality inspection Flowmeter working status Online check Check

Metering performance requirements Accuracy level Table 2-4 is the accuracy grade series of the vortex flowmeter. The accuracy grade should be clearly indicated on the flowmeter product manual and the nameplate of the flowmeter. Level of accuracy 0.5 1 1.5 2 2.5 Maximum allowable error qt≤q≤qmax ±0.5% ±1.0% ±1.5% ±2.0% ±2.5% qmin≤q≤qt ±1.0% ±2.0% ±3.0%

In addition to the correct instrument selection and installation according to the user’s given process parameters, and the installation meets the specified requirements, on-site adjustment is also a key issue. 1.On-site installation is completed and the inspection before power-on and current flow (1) There should be no leakage in the flanges, valves, pressure measuring holes,