Intelligent remote flowmeter for water supply

Intelligent remote flowmeter for water supply

So as to help users minimize the installation time before the experiment, "said Dr. Jakub Vidner, product manager of Qishile. Quick installation and user optimized operation vehicle testers hope to focus their energy on actual testing rather than preparing for installation work. Thanks to the strong transmission and wide coverage of wireless LAN signals, the new KiRoadWireless P1 system can operate smoothly without the need for additional receiving antennas. In the past, external reflector antennas had to be installed, or external receiving antennas had to be installed on the truck chassis with cables several meters long, in order to be as close to the sensors as possible. With the KiRoadWireless P1 system, there is no need to spend precious time on these steps, "Dr. Vidner explained." Now, all that is needed is to install the onboard electronic unit in the cab, install the wheel module on the drive shaft, and the measurement chain is ready.

Split type electromagnetic flowmeter is mainly used to measure the volumetric flow rate of conductive liquids and slurries in closed pipelines. Including highly corrosive liquids such as acids, alkalis, salts, etc. This product is widely used in industries such as petroleum, chemical, metallurgical, textile, food, pharmaceutical, papermaking, as well as in fields such as environmental protection, municipal management, and water conservancy construction.

Intelligent remote flowmeter for water supply

A compensation calibration method for an RTC module applied in an electric energy meter, comprising: obtaining compensation parameters required for clock calibration based on the measured crystal temperature of the RTC module; Calculate the compensation calibration value and compensation remainder based on the compensation parameters and the compensation unit of the RTC module; Calibrate the clock frequency of the RTC module based on the compensation calibration value and the compensation remainder. Preferably, in each compensation cycle, the clock frequency of the RTC module is calibrated based on the compensation calibration value and the compensation remainder, which specifically includes calibrating the clock frequency of the RTC module according to the compensation calibration value and storing the compensation remainder.

Electromagnetic flow meters are classified according to the assembly method of converters and sensors, including split type and integrated type.

Split type electromagnetic flowmeter is a commonly used form of electromagnetic flowmeter, as shown in the figure below. The sensor is connected to the pipeline, and the converter is installed near the sensor in the instrument room or easily accessible to people, with a distance of tens to hundreds of meters.

To prevent external noise from entering, signal cables usually use dual core shielded wires. When measuring liquids with low conductivity and gathering for more than 30m, in order to prevent signal attenuation caused by partial capacitance of the cable, it is also required to connect a shielding driver with the same potential and low impedance source as the core wire to the inner shielding. The converter of the split type electromagnetic flowmeter can be kept away from harsh on-site environments, making electronic component inspection, adjustment, and parameter setting more convenient.

The neutral salt spray test (NSS test) is currently a widely used accelerated corrosion testing method in various fields. Generally, it uses 5% sodium chloride saline solution, and the solution PH value is adjusted in the neutral range (6.5~7.2) as the solution for spray. The experimental temperature is set at 35 ° C, and the settling rate of salt spray is required to be between 1-3ml/80cm2. h, with a settling amount generally between 1-2ml/80cm2. h. The salt spray test (AASS test) was developed based on the neutral salt spray test. It involves adding some glacial acetic acid to a 5% sodium chloride solution to lower the pH value of the solution to around 3, causing the solution to become acidic. The resulting salt spray also changes from neutral to acidic.

The measurement principle of split type electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. The split type electromagnetic flowmeter consists of a sensor and a converter. The sensor is installed on the measurement pipeline, and the converter is installed within 30 meters or 100 meters from the sensor. The two are connected by a shielded cable.

It is not surprising that there is a high-resolution plasma television market, as humans are easily guided by vision. Although the price of these 40 inch flat behemoths is 10 times that of cathode ray tube (CRT) display devices, consumers are still willing to pay for the resolution and contrast improvements brought by new technologies. Similarly, consumers' expectations for videos and displays in handheld devices are gradually increasing. 、 PDA， Even MP3 players like iPod can provide clear images like large-sized display devices from a few years ago. Today's portable devices are equipped with brighter, more luxurious, and easier to operate displays, but they are susceptible to noise interference, which reduces the quality of video signals.

1. Measurement is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity;