Sewage homogenization tanks are used to homogenize water quality at different time intervals, and the adjustment of water volume is an important equipment that affects the effect of sewage treatment. Maintaining a certain amount of water in the tank is a prerequisite for good sewage treatment. Therefore, the accurate measurement of the level of the homogenizer tank is particularly important for the normal operation of the hydrophobic treatment. The level of the homogenized tank was originally measured by the air-blowing method, but the pressure-injection tube often blocked and coagulated, which caused many difficulties for the operation and maintenance of the instrument. To this end, in June 1997 a new BM70 radar level gauge manufactured by Jiuji Instrument Co., Ltd. was introduced. The level gauge of the homogenized tank is monitored, as shown in Figure 1. Radar Level Meter Introduction Radar level gauge is a new type of instrument gradually applied in China in recent years. It uses electromagnetic waves (microwaves) for continuous non-contact liquid level measurement, specifically for liquid level measurement of liquids, pastes and slurries in storage vessels. It is not affected by the upper gas density and thermal stratification of the contents of the container tank, even if the air in the container tank contains smoke, dust or noise during the injection process. It also ensures accurate measurements. The radar level gauge consists of a probe and a signal converter, which can be on-site indication or remote transmission indication (output 4-2/hnA standard signal) or connected with a microcomputer. working principle The BM70 radar level gauge works on the basis of the FMCW (Frequency Modulation Continuous Wave) radar method. A microwave FM signal with a fixed amplitude is emitted through the antenna and reflected on the object. The reflected microwave signal is received after a certain period of time and is mixed with a part of the transmitted signal. The frequency of the output signal of the mixer is proportional to the interval time, so it can accurately reflect the distance from the surface of the measured medium (level), as shown in Figure 2. The installation of radar level gauge Bl'd70 is required to be on the same level, and the microwave hole area should extend out of the connecting device. It cannot be installed near the tank out of the population connection pipe. Install it as far away as possible from the source of interference. Figure 3 and Figure 4 are incorrect installation methods. The correct installation is shown in Figure 5. 1) In order to eliminate the effect of the ineffective vibration, a method of reinforcing the short tube is adopted to reduce the vibration of the instrument. 2) The instrument piping was not fixed during the original installation, and the liquid level of the meter fluctuates greatly. After adopting the method of fixing the bracket and then welding, the error of the amount of 钡j caused by the shaking of the instrument is avoided. During the actual operation, it was found that the liquid level indicated by the instrument was sometimes not zero when the homogenized tank was not fed into the sewage. We verified the instrument by preprogramming the microcomputer. We found that the internal signal of the instrument was strong. We eliminated the interference signal, recalibrated the zero calibration, and the instrument entered the normal liquid level display state, as shown in Figure 6 and Figure 7, respectively. Effect After more than one year of operation, the liquid level gauge has good performance, smooth operation, low maintenance workload, and intuitive indication (one level directly shows the level height, but also can be remotely transmitted to the operating room), and is easy to operate. Oil and oil and gas can work normally in the environment, and abnormalities are also thrown at 8o°C. The author believes that for the petrochemical wastewater treatment, the instrument is used for liquid level measurement, with advanced technology, reliable performance, and strong practicality. Dot peen marking works by electromechanically striking a carbide or diamond stylus assembly against the surface of a part to be marked.For example,dog tag engraver.The result is a succession of dots to create digits, text, logos, and 2D data matrix codes. Each such dot is the result of a pulsed current that runs through a solenoid, punches a magnet toward the surface, and subsequently returns the stylus to its starting position, awaiting the next pulse. Because each pulse occurs in only a fraction of a second, an entire 2D data matrix code, for example, can be completed in seconds (depending on the size).
Compressed air is not required.
Dot Peen Marking Machine,Pnematic Dot Peen Marking Machine,Pneumatic Marking Machine,Dot Markers,Dot Peen Marker,Dog Tag Engraver Wuhan HAE Technology Co., Ltd. , https://www.whwallprinter.com
Installation, debugging and improvement measures 
In addition to strict installation requirements, our factory also did the following two tasks during installation. 
Notable Characteristics:
Cost effective
Requires no consumables
High speed accuracy
Will mark any material (including hardened steel)
