water master electromagnetic flowmeter supplier

water master electromagnetic flowmeter supplier

The electromagnetic flowmeter can manage the software plant's other equipment from the same general equipment, such as pH and dissolved oxygen analyzers, electric actuators and variable speed drives. Continuous health monitoring from a central location may use bus technology and wireless communication, so the operator round check can be displayed locally in the field.
eliminate. Expert knowledge can help solve problems faster in interpretation and diagnosis. Principle of Operation
 The electromagnetic flowmeter is based on Faraday's principle and law: a conductor moving through a magnetic field causes a voltage to be proportional to the speed of the conductor. In the case of the electromagnetic flowmeter inside, the two coils are located at the top and the bottom of the flow tube are driven by the transmitter to generate a pulsed magnetic field with uniform intensity. The induced voltage is proportional to the speed at which the liquid passes through the flow tube. The saddle coil design reduces the length of straight pipe upstream and downstream pipes. The induced voltage is connected to either side of the flow meter by electrodes and measured by the transmitter.
 The flow tube is calibrated in the factory, and the calibration number (K factor) is obtained and keyed into the transmitter. The speed is calculated from the induced voltage and the calibration number. The cross-sectional area of the volume flow is obtained by multiplying by the flow tube. The electromagnetic flowmeter is suitable for conductive liquids. They are used in all industries, including municipal and industrial water and wastewater treatment sludge, chemicals and the flow of treated water. Reduce calibration costs. Over time, temperature cycling and vibration cause mechanical displacement in the flow tube coil, which in turn leads to a changing magnetic field. Moisture and the coating on the electrode can also change the response of the flow meter and cause the measurement to drift out of calibration. The voltage in the transmitter induced by the A/D conversion may drift.
 When the electromagnetic flowmeter loses its calibration, the flow measurement becomes inaccurate, resulting in incorrect recording and reporting. Optimal control is difficult if the flow measurement is uncertain. For these reasons, water and sewage treatment plants need to regularly verify to meet their own internal quality standards to meet government regulations. Calibration is too frequent, expensive, time-consuming, and disrupts the process. If the calibration is not frequent enough, the water quality can have a negative impact. There are many legally required cases for the ability of the flowmeter to be verified every year within the required accuracy range.
 In the past, transmitter calibration was for a simulator. The flow tube was not verified on site. In other words, the test is not completed. Even if this simple test requires the flowmeter to be de-energized, the wiring must be disconnected before connecting to the simulator. Then the electron needs time to warm up. The configured transmitter must be replaced and checked, and then returned to the operating setting. This process is destructive and time consuming. Many water and wastewater treatment plants rely on external contractors to perform such checks on their flow meters, resulting in high maintenance costs. LCR (inductance, capacitance, and resistance) meters and multimeters check for direct failure of coils or electrodes, but fail to detect characteristic changes that may indicate drift. The traditional methods used to fully inspect flow meters-including flow tubes-are expensive and labor intensive. They need to be shut down every year, the flow tube is removed, and shipped to the manufacturer's flow laboratory. The typical turnaround time is about four weeks. Spare flow meters may need to be installed on a rotating basis with matching sizes and materials, while calibrating the flow meters in the flow laboratory.
 Another option is to introduce mobile prover rigs and skilled technicians. This process is labor-intensive and destructive. External contract work is expensive and increases dramatically with line size. A better solution is in-situ smart meter verification. This is the complete performance verification of the electromagnetic flowmeter. The electronic judgment is whether the electromagnetic flowmeter has undergone changes in magnetic field strength, coil resistance or electrode resistance. The current characteristics are used to compare the magnetic field strength and electrode resistance with the baseline parameter values when magnetic. The flowmeter was fully calibrated last time. The baseline parameter is the coil resistance captured during installation. Test standards can be set to the level necessary to meet compliance requirements for the application. The deviation between the current value and the baseline value exceeding the test standard indicates that a full calibration will be required. If the change characteristics of the flow tube are small, the flowmeter passes the verification test and does not need to be calibrated. The instrument verification report can be printed and submitted to the regulatory agency as environmental protection or pollution control, and applied for future reference.
 Smart meter verification is embedded with a magnetic flowmeter; no external equipment is required, and technicians do not need to drain the meter out of the line, so the equipment keeps running. There is no need to turn off the flow meter, change the configuration transmitter, or connect to the simulator. The smart meter verification test program only takes a few minutes and can be run at any time-remotely initiated by the click of a button. No long-term trend is needed. Because of the digital communication protocol (such as HART®) fieldbus or; smart instrument verification can be remotely triggered from the maintenance station in the control room. The technician does not need to go to this field to connect the device or press the local button operation interface. Electronic Device Description Language (EDDL) can start smart meter verification from any control system that supports EDDL, as well as all leading systems today. The flowmeter manufacturer created by the EDDL wizard guides the technician step by step; no special training is required. The percentage of completion is displayed throughout the process, so technicians know how they need to wait. Meter Verification Wizard