Integrated intelligent pure water turbine flowmeter

Integrated intelligent pure water turbine flowmeterBased on the principle of torque balance, it belongs to the speed type flow meter. Sensors have the characteristics of simple structure, lightweight, high accuracy, good reproducibility, sensitive response, and easy installation, maintenance, and use. They are widely used in petroleum, chemical, metallurgical, water supply, and papermaking industriesSewage treatment plants, food, pharmaceuticalsThe industry is an ideal instrument for flow measurement and energy conservation.Sensors and display instruments are used in conjunction, suitable for measuring stainless steel 1Cr18Ni9Ti, 2Cr13, and corundum Al in closed pipelines2O3Hard alloy is a liquid that does not corrode and has no impurities such as fibers or particles. If matched with display instruments with special functions, quantitative control, over limit alarm, etc. can also be performed. The explosion-proof type (ExmT6) of this product can be used in environments with explosive hazards.

Intelligent pure water turbine flowmeterSuitable for viscosity less than 5 × 10-6 at operating temperaturem2/For media with viscosity greater than 5 × 10-6m2/The liquid of s needs to be calibrated for the sensor before use. If users require special forms of sensors, they can negotiate to place an order. If explosion-proof sensors are needed, they should be explained in the order.

Structural features and working principle

(1) Structural features:The sensor is a hard alloy bearing thrust type, which not only ensures accuracy and improves wear resistance, but also has the characteristics of simple structure, firmness, and easy disassembly and assembly.

(2) Working principle:The fluid flows through the sensor housing. Due to the angle between the blades of the impeller and the flow direction, the impulse of the fluid causes the blades to have a rotational torque. After overcoming the friction torque and fluid resistance, the blades rotate. After the torque is balanced, the speed is stable. Under certain conditions, the speed is proportional to the flow velocity. Due to the magnetic conductivity of the blades, they are in the magnetic field of the signal detector (composed of magnetic steel and coils). The rotating blades cut the magnetic field lines and periodically change the magnetic flux of the coil, causing electrical pulse signals to be induced at both ends of the coil. This signal is amplified and shaped by an amplifier to form a continuous rectangular pulse wave with a certain amplitude, which can be transmitted to a display instrument to display the instantaneous flow rate or total amount of the fluid. Within a certain flow range, the pulse frequency f is proportional to the instantaneous flow rate Q of the fluid flowing through the sensor, and the flow equation is:

In the formula: f - pulse frequency [Hz]

K - Instrument coefficient of the sensor [1/m]3]Provided by the verification form. If [1/L] is used as the unit

Q - Instantaneous flow rate of fluid (under working conditions) [m]3/h]

3600- Conversion factor

The instrument coefficient of each sensor is filled in the calibration certificate by Dichuan Manufacturing Factory, and the k value is set in the matching display instrument to display the instantaneous flow rate and cumulative total amount.

Intelligent pure water turbine flowmeterInstrument type:

(1)LWGYN basic type LWGYA current output non display type LWGYB battery powered type LWGYC output display 24V power supply

• Instrument diameter: DN4-DN200, such as DN25. Selection code: 25

(3) Medium temperature:-20～＋120℃.

(4) Environmental temperature：-20～＋55℃.

(5) Power supply:Voltage: 12V ± 10%, current: ≤ 10mA

(6) Output voltage amplitude:High level ≥ 8V, low level ≤ 0.8V

(7) Transmission distance:The distance from the sensor to the display instrument can reach 1000m

Integrated intelligent pure water turbine flowmeterIt is developed using horizontal ultra-low power single-chip microcomputer technologyTurbine flow sensorA new type of intelligent instrument integrated with display integration, using dual row LCD on-site display, has obvious advantages such as compact mechanism, intuitive and clear reading, high reliability, no external power interference, lightning resistance, and low cost. Keep all valid data intact for 15 years after power failure. This categoryturbine flow meterAll are explosion-proof products, with an explosion-proof rating of ExdIIBT6. Suitable for lubricating oil vegetable oil. Diesel fuel Oil Waiting for various oil products. Widely applicable in petroleum, chemicalTap waterLiquid flow measurement in industries such as light industry and food. This product has superior performance and has reached the advanced level of similar products.

Intelligent pure water turbine flowmeterInstallation requirements:

When installing sensors outdoors, please make sure to waterproof the amplifier and meter head. When there are impurities in the fluid, a filter should be installed, and the mesh size of the filter should be determined according to the flow rate of impurities, generally ranging from 20 to 60 mesh. When there is free gas mixed in the fluid, a deaerator should be installed. The entire pipeline system should be well sealed. Users should fully understand the corrosion situation of the tested medium and strictly prevent the sensor from being corroded. The gasket used for connection sealing shall not penetrate deep into the inner cavity of the pipeline; Sensors should be kept away from external electric and magnetic fields, and effective shielding measures should be taken if necessary to avoid external interference. In order to avoid affecting the normal transportation of liquids during maintenance, it is recommended to install a bypass pipeline at the installation location of the sensor

Intelligent pure water turbine flowmetermaintenance

·The maintenance cycle of sensors is generally six months. During maintenance and cleaning, please be careful not to damage the parts inside the measuring chamber, especially the impeller. Please pay attention to the position relationship between the guide and impeller during assembly, and ensure that the tested liquid is clean and free of impurities such as fibers and particles.

·Before installing the sensor, blow or manually turn the impeller to quickly rotate and observe for any display. When there is a display, install the sensor. If there is no display, the relevant parts should be checked to troubleshoot.

·At the beginning of use, the sensor should be slowly filled with liquid.

·When the sensor is not in use, the internal liquid should be cleaned, dried, and protective covers should be added at both ends of the sensor to prevent dust and dirt from entering, and then stored in a dry place.

·The matched filter shall be cleaned regularly, and the internal liquid shall be cleaned when not in use. Like the sensor, it shall be sealed with dust cover and stored in a dry place.

Basic parameters and technical performance

1. Technical Performance Table 1

2. Measurement range and working pressure gauge 2