Water Flow Meter Types

The water flow meter is composed of two parts: sensor and converter. It is based on Faraday's law of electromagnetic induction, used to measure the volume flow of conductive liquid conductivity is greater than 5?s /cm, is a conductive medium volume flow measurement induction meter. In addition to measuring the volume flow of general conductive liquid, it can also be used to measure the volume flow of strong corrosive liquid such as strong acid and strong base and uniform liquid-solid two-phase suspended liquid such as mud, pulp, pulp, etc. Widely used in petroleum, chemical, metallurgy, textile, paper, environmental protection, food and other industrial departments and municipal management, water conservancy construction, river dredging and other fields of flow measurement.Digital quantity processing, strong anti-interference ability, reliable measurement, high precision, flow measurement range up to 150:1 ultra-low EMI switching power supply, suitable for power supply voltage variation range, good anti-EMI performance. Using 16-BIT embedded MICROPROCESSOR, THE operation speed is fast, the precision is high, and the programmable frequency low frequency rectangular wave excitation improves the quality of the steady flow meter for flow measurement and the power consumption is low. There are no moving parts or open flow parts in the pipeline, so there is almost no additional pressure loss in the measurement. High definition backlight LCD display, full Chinese menu operation, easy to use, simple operation, easy to learn and understand. It has the function of self - test and self - judgment. Hour total recording function, in the unit of hours to record the total amount of flow, suitable for time-sharing measurement system with three integrators inside can respectively display the forward cumulative amount reverse cumulative amount and differential cumulative amount, the internal is equipped with no power failure always, can record 16 times of power failure time.The most common and economically developed type of water flowmeter is the mechanical equipment flowmeter, which accurately measures the flow rate of the turbocharged rotation based on an aircraft propeller, shunt or paddle wheel design. This mechanical device works by accurately measuring the rate of liquid water flowing through a pipe as a turbine engine or piston rod turns. The volumetric flow rate of water was positively correlated with the speed ratio of leaves. The disadvantage of mechanical flowmeters for accurate water measurement is that they are more likely to block when the water turns black or when particulate matter is large, increasing maintenance costs. Mechanical equipment water meter in the condition of low water flow can not work properly.Vortex flowmeters use vortices that bleed into a flow sensor. Vortices are natural forces that create "vortices" when liquids move through obstacles, like water moving around rock formations in a stream or wind moving through a flag pole. In a vortex meter, as each vortex passes through, the sensor swivel will bend up and down, resulting in a frequency output that is positively related to volume flow. The multi-independent vortex flowmeter can accurately measure up to five whole process independent variables according to the number of connections in a whole process: volume flow rate, mass flow rate, relative density, working pressure and temperature. Insert vortex meters can work very well on very large pipes because they can be inserted into the flow according to the thermal attack of the applied retractor.Ultrasonic water flowmeters use ultrasound to accurately measure the rate of liquid in the pipeline to accurately measure volumetric flow. In a time-tested ultrasonic liquid flow meter, the ultrasonic data signal is transmitted along the direction of the liquid in the middle and lower reaches, followed by another data signal that is transmitted upstream and downstream against the liquid. In the most basic way, the time of sound monopulse propagation is compared with the time of sound monopulse propagation up and down. This differentiation time is then used to calculate the rate of the mobile liquid. This fluid rate is then applied by the dashboard to calculate the volumetric water flow in the line. Accurate measurement of BTU kinetic energy can also be obtained from the volume flow rate and temperature difference between hot and cold tubes. Fast JIg ultrasonic dashboards accurately measure the water outside the pipeline by sending a single pulse of sound inside the pipeline, so they are the ideal choice for accurate measurement of water flow in large and medium-sized pipelines, and have the ability to use coordination.Magnetic induction flowmeters use electromagnetic fields to accurately measure the rate of liquid in the pipeline to accurately measure volumetric flow. They applied Faraday's fundamental law of magnetic effects of electric currents. According to Faraday's law, when a liquid passes through an electromagnetic field, it causes an operating voltage. When the liquid moves faster, it creates a lot of operating voltage. The resulting working voltage is positively correlated with the water fitness movement. Electronic products analyze the operating voltage signal as volumetric flow. Magnetic induction flowmeter has a medium level of precision, so it is not suitable for trade work handover use, and because there is no positive ion must be accurate measurement, so it can not work on pure water.

How to select flow meter? How to install and maintain flow meter? Flow meter thunderstorm season how to prevent field under field electricityIs a universal phenomenon in nature, scared days often happen flow meter is damaged by lightning, so we have toFind a way to eliminate its impact on the flow meter. First of all, let's understand what lightning will do to the sensorThe influence of. Lightning passes through the power supply part to invade and burn out the sensor. Lightning is accompanied by a strong magnetic field instrument electricityThe sub-component generates magnetic induction, instantly generates strong voltage and current, and the automatic meter breaks down the insulation and burns out the sensor. Thunder and lightningThe pulse travels through the wireless network and infiltrates the traffic sensor and burns out the communication chip or sensor.

Water flowmeter flow meter?https://apureinstrument.com/blogs/select-the-right-water-flow-meter/? lightning protection scheme description: lightning protection according to the site environment :1. External lightning protection.Including lightning rod, lightning belt, lead line, ground pole and so on. Infrared carbon sulfur analyzer 2. Internal lightning protection. In needTo protect the front end of the equipment to install a suitable lightning arrester, so that the equipment, line and the ground to form a conditional equipotentialBody. The two lightning protection schemes complement each other. The external lightning protection system protects the building body from lightning strikes, while the internal lightning protection systemIs to prevent inductive lightning and other forms of overvoltage intrusion equipment damage. If the flow sensor is damagedIt is best to check whether there is a lightning rod, if there is a detection point to measure the grounding resistance is qualified: if the flowThe measurement sensor is connected with the pipe flange. It is also necessary to check whether the ground screw of the internal magnifying plate is properly connected, and the shell is OKSeparate copper mesh to make a bottom line connected to the pipe flange bolt, and then the cable into the line, outside the protection pipe and connectionThe end of the metal hose must be screwed into the line hole with a clamping sleeve: in addition, you can add a surge protector in the front end.