Now that the TV box has entered thousands of households, do you really use the TV box? I believe that many of my friends' answers are affirmative, but the real situation may not be the case. I believe that most users do not have the correct use of the "pose" of the TV box. I am here today to tell you how to use the TV box correctly. One: Shut down and unplug the power Most TV box products use the remote control to shut down, but it is not really a power off, but enters a sleep state. In fact, the machine itself is still powered, if it continues, it will cause certain damage to the TV box hardware. At the same time, some TV boxes will consume power normally during the sleep state. If the power is not cut off, it will cause waste of resources. Two: third-party application extension In fact, the formal TV box products, their own built-in applications are still relatively small, and can not meet our daily use needs. So we also need to install some third-party applications to expand video, games and many other everyday applications. Three: regularly clean up the garbage As the TV box product of Android system, after running for a long time, it is inevitable that there will be system garbage or cache. If it is not cleaned up in time, it will cause the system to be stuck, or the TV box has insufficient storage resources. Therefore, TV box users can download some third-party applications such as assistants, 360 TV guards, etc. that have the function of cleaning up the system garbage, and regularly clean up the TV box system garbage. Four: Avoid the memory card "hot swap" Some TV box products, in order to make up for their own storage capacity shortage, are equipped with TF card or SD card slot to meet the user's expansion of storage. When inserting a memory card, we should avoid hot swapping. When running an application stored in a memory card or playing a video, do not remove the memory card to avoid burning the motherboard or causing damage to the memory card. Five: moisture For electrical equipment, fear of a humid environment is a common problem, and TV boxes are no exception. Therefore, we should avoid using it in a humid environment, because in the humid environment, electrical components such as the motherboard of the TV box are prone to rust and corrosion. Using the TV box in such an environment for a long time will greatly shorten its service life.
Piezoelectric ceramic disc
Quick delivery
High performance
Application: flow meter measurement
There are many kinds of USF used in closed pipeline according to the measuring principle, and the most commonly used are propagation time method and Doppler method. Among them, time difference ultrasonic flowmeter is used to measure fluid flow by the principle that the time difference of sound wave propagating downstream and countercurrent is proportional to the velocity of fluid flow. It is widely used in raw water measurement of rivers, rivers and reservoirs, process flow detection of petrochemical products, water consumption measurement of production process and other fields. According to practical application, time-difference ultrasonic flowmeter can be divided into portable time-difference ultrasonic flowmeter, fixed time-difference ultrasonic flowmeter and time-difference gas ultrasonic flowmeter.
Ultrasonic flow-meters use at least two transducers aligned so that ultrasonic pulses travel across the flow of liquid or gas in a pipe at a known angle to the flow.
Technical data:
Electromechanical coupling coefficient Kp: > 0.62
Dielectric Loss tg δ: <2%
Nominal Piezo discs for ultrasonic flowmeter:
OD14.2*1MHz PZT-51
OD14.6*1MHz PZT-51
OD15*1MHz PSnN-5
OD15*2MHz PSnN-5
OD20*2MHz PSnN-5
OD15*1MHz PZT-51
OD15*2MHz PZT-51
OD20*2MHz PZT-51
Size, Frequency and Electrode on request.
Piezoelectric Discs For Flowmeter Sensor Piezoelectric Ceramic Disc,Piezoelectric Disk Flow Meter,Piezoelectric Flow Sensor,Piezo Discs Flowmeter Zibo Yuhai Electronic Ceramic Co., Ltd. , https://www.yhpiezo.com
