In order to ensure trouble-free manufacturing and reliable test results, many processes require the same inflow and outflow of liquid or gaseous media. In automated production processes, in addition to pressure and temperature, the measurement of flow is also very important. According to the requirement of continuous monitoring or limit monitoring of the flow rate, the output signal of the flow sensor can be selected as the analog quantity or the switching quantity corresponding to the current flow rate. Each application has special requirements for flow sensors.
Turck flow sensors are mainly used in manufacturing.
Various measuring principles
Different physical principles of electronic or mechanical flow monitoring have their own advantages. If the flow rate of the medium is different according to the principle of thermal conduction, the amount of heat generated is different.
The online sensor determines the flow based on the cross-section of the known pipe - first the flow rate is detected and then the flow rate is calculated based on the flow rate. Turck FTCI series flow sensor can display the current flow, stable performance, but different media thermal conductivity is different, it is usually only suitable for water or mixed liquid ethylene glycol.
The mass flow meter for liquid and gas flow detection based on the Klioli principle is expensive. As the medium flows through the elbow, the mass flowmeter causes it to oscillate and measure the resulting Kollilee force. Mass flowmeters have the advantages of high measurement accuracy, dynamic measurement range, low pressure loss, and are suitable for both gases and liquids.
Ultrasonic flow measurement mainly has two methods: Doppler method, which uses the medium reflected sound wave to make the frequency change, and the sound source and the sound wave receiving medium produce frequency difference when they move relative to each other. The running time method, that is, the speed of sound superimposed on the medium, if the ultrasonic wave is in the same direction as the water flow, the running time is short; conversely, the running time is long, and the flow rate can be calculated from the running time difference.
Another important principle is the vortex frequency method, also known as the vortex street principle, in which a fluid is placed in a bluff body to form a Karman vortex street. With a certain flow, regular vortexes form on both sides of the bluff body. Turck FCVI vortex flowmeters are sensitive to changes in medium pressure and temperature, making them ideal for controlling processes and cold water circuits, especially for water monitoring.
The differential pressure method is based on Bernoulli's principle - the narrow part of the pipeline is intersected to form a nozzle. Since the flow rate is the same at any location in the pipeline system, a pressure drop is formed and the flow rate can be calculated according to Bernoulli's principle.
The flow meter based on the principle of electromagnetic induction is suitable for detecting all conductive liquids with conductivity greater than 15 μS/cm. In the magnetic field, the moving charged particles produce a voltage proportional to the average flow velocity of the medium. The accuracy of the FCMI electromagnetic flowmeter is 2% of the measured value. There is no mechanically movable part in the fluid. In addition, there is no need to reduce the elbow. Small diameter, so no pressure loss occurs.
Analysis of advantages and disadvantages of 4G industrial routers
First, what is the classification of industrial routers?
Industrial Router (a communication device that can be divided into 2G routers, 2.5G routers, 3G routers and 4G routers according to network standards.
For users, you can communicate with the Internet by setting a default gateway on your PC or network device. In fact, the default gateway configured for network devices is the packet export for network devices. After the packet is sent to the Ethernet port of the router, the router performs the next job, so the router is an Internet relay.
Second, how do industrial routers work
So how does the router forward the packet? Just like getting somewhere, you need to place a route. This route is a routing table. This routing table contains all the destination network addresses owned by the router, as well as the best path to reach those networks through the router. This is because there is a routing table, so the router can forward packets according to the routing table. That's how routers work.
Understand what is an industrial router and how it works, it is not difficult to understand the advantages and disadvantages of the router. Here we focus on the advantages and disadvantages of 4G industrial routers.
Third, the advantages of 4G industrial routers
For networks interconnected via single-protocol industrial-grade wireless routers, the same or different protocols can be used at layers 1-2. Layer 3 uses the same routable protocol and requires the same or compatible protocols at layer 4 and beyond.
Industrial routers can perform complex routing calculations and are suitable for connecting three or more large networks with complex network topologies.
Industrial-grade routers can isolate broadcast storm information in the source network, thereby reducing and mitigating the impact of broadcast storms.
Multiprotocol industrial wireless routers can be used as network interconnection platforms using different communication protocols because they can connect to the network using different communication protocols.
The entire network router can also be used as a bridge to handle non-routable protocols.
Industrial 4G routers enable you to isolate unnecessary communications so that the interconnected network maintains its own area of independent management and control, thereby improving network security performance. Therefore, industrial-grade 4G routers are commonly used as firewalls to restrict access to the internal and external networks (Internet) of the LAN, as well as the internal areas of the LAN, and act as network masking.
It can provide reliable transport and prioritization services, and industrial LTE routers do not need to maintain a persistent connection between networks that communicate with each other.
Complete Netcom router network segmentation improves network performance and reduces host load.
Third, the advantages of 4G industrial routers
High price
When installing an industrial LTE router, it is difficult to install and maintain due to the large number of initial configurations
If you spend more time processing, the transmission performance of the entire network of the industrial router will decrease.
Unlike Bridges, routers across industrial networks are protocol-related. Each advanced protocol used for network connectivity must be configured separately, and an industrial-grade network-grade router with a separate protocol for each protocol must be provided.
Industrial Netcom routers do not support non-routed protocols, so when interconnecting multiple networks, there are restrictions on the protocols used by the connected networks.
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Shenzhen MovingComm Technology Co., Ltd. , https://www.szmovingcomm.com