(A) medium purity What is 2.4g wireless module? 2.4G Router Module,M2 Wifi Module,2.4 Ghz Wifi Module,Mini Wifi Module Shenzhen MovingComm Technology Co., Ltd. , https://www.mcrouters.com
1, the liquid can not be filled with dense bubbles. 2, the liquid can not be suspended in large amounts of solids, such as crystals. 3, the bottom of the container can not deposit a lot of sediment and sediment.
(B) Medium viscosity
Normal measurement when the dynamic viscosity is <10 mPaS. 10mPaS < dynamic viscosity <30mPaS may reduce the instrument range. It cannot be measured when the dynamic viscosity is >30 mPaS. Note: As the viscosity decreases with increasing temperature, most highly viscous liquids are more affected by temperature, so pay attention to liquid temperature effects when measuring a viscous liquid.
(three) measured container
1. Material: The wall of the container where the measuring probe is installed needs to be made of a hard material that can transmit signals well. For example: carbon steel, stainless steel, various hard metals, glass steel, hard plastic, ceramics, glass, hard rubber or other materials or composite materials. If the container wall where the measuring probe is installed is a multi-layer material, the layers should be in close contact with no air bubbles or gas interlayers. The inner and outer surfaces of the container wall should be flat. Example: vulcanized hard rubber liner, stainless steel liner, titanium liner Floor. 2, wall thickness: 2-70mm3, tank type: spherical tank, horizontal tank, vertical tank.
(d) Probe installation requirements
1. For the iron container, the working end of the probe can be coated with silicone grease and directly attached to the bottom of the container with a magnetic suction cup; if the container housing is made of glass or other materials, the probe can be glued or fixed with a bracket The bottom of the container. The probe must point in the same line as the measured distance. 2. There are no shields directly above the probe; 3. Keep away from the liquid inlet at the bottom of the tank to avoid the influence of drastic flow of incoming liquid on the measurement; 4. Keep away from the position of the liquid inlet at the top of the tank, so as to avoid the impact caused by the liquid. Severe fluctuations affect the measurement; 5, higher than the outlet or outlet, in order to avoid the impact of long-term deposition of dirt on the bottom of the tank measurement. If you do not meet the conditions, there should be measures to ensure the regular removal of tank bottom dirt; When the position measuring head is mounted by magnetic or welding/adhesive fixing, the installation surface size on the container wall shall not be less than the round face of Ф80, the surface roughness shall reach 1.6, and the inclination shall be less than 3° (except for the bypass pipe).
2.4g line module operating frequency in the range of 24400-2484mhz, can communicate through the scanning protocol, air rate up to 1Mbps, output power up to +4dBm, the module has the advantages of low power consumption, cost-effective. Movingcomm's current 2.4g antenna modules are: IOT04, IOT05, IOT09, IOT18, IOT60, etc. Users can choose a variety of modules with a transmission distance of 50-500 meters according to cost considerations.
Second, the role of 2.4g wireless module
Function 1, for the formation of a star topology wireless communication network, and must be a multi-point star topology, some extraordinary places need wireless communication. On the one hand, the transmitting and receiving module is cheap, and the cost of forming the star topology is relatively low. On the other hand, the transmitting and receiving module can adopt the modular design, which is small in size, easy to use and easy to integrate. For the wireless network with low communication speed and close distance, the transmitting and receiving module is very practical.
Function 2, for wireless multi-channel (parallel) control. Such as complex remote-controlled robots, some places require multi-channel (parallel) control. One method is to use the receiving module to directly connect to the decoder, and then connect to the relays and other electronic components to drive the subsequent controlled object; the other method is to use the receiving module to connect to the single chip microcomputer, and after the data is disposed of, the single chip microcomputer is connected to the relays and other electronic components to drive the subsequent controlled object. Usually a pair of transmitting and receiving modules can achieve up to six parallel wireless control, if the required number of channels is greater than six, you can use multiple pairs of transmitting and receiving modules, and work at the same time to meet the actual needs.
Function 3, used for general serial port, RS232 antenna data transmission, there are usually many control instruments and equipment using serial port, and communication with these devices must meet the requirements of serial port. In some extraordinary places, when the industrial control site must use the antenna transmission mode, it is natural to choose the transmitting and receiving modules mentioned in this article, but it must be explained here that to use this communication mode, the corresponding software must be prepared at the transmitting end and the receiving end respectively to achieve the conversion of file formats, in order to achieve the purpose of wireless communication, if the communication system is full-duplex. It can be achieved by using two pairs of transmitting and receiving modules, working simultaneously.
Third, 2.4g wireless module application field
2.4G wireless module is widely used in wireless health sports products, wireless mouse and keyboard, product information push, wireless remote sensing, wireless ranging system, alarm security system, smart home, toy control, tire pressure monitoring and other fields. With the 2.4G wireless module, all the whole house wireless smart home can be linked together, you can control all the smart home devices through the link of the network, and then you can control the switch of all the whole house wireless home, adjust the brightness of the lamp, adjust the rise and fall of the curtain, etc., through the continuous innovation of technology, The whole house wireless smart home can be controlled by a small white robot voice, can be controlled by a smart scene panel, can be controlled by sensors and so on.
Four, 2.4g wireless module how to choose antenna
In general, the 2.4g wireless module requires an impedance of 50 ohms, a red wire used with 2.4g, a 2.4g folded rod antenna, a 2.4g gold-plated straight head rod antenna, a 2.4g gold-plated elbow rod antenna, and a 2.4g small suction cup antenna. These antennas are special antennas designed for 2.4g wireless communication system, antenna standing wave ratio performance is good, small size, clever structure, easy installation, stable performance, with good anti-vibration and aging ability.