Earth Pressure Transducer
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- Q: Application fields of pressure sensors
- Pressure sensor is one of the most common sensors in industrial practice, and the pressure sensors we usually use are mainly made of piezoelectric effect. Such sensors are also called piezoelectric sensors. We know that the crystals are anisotropic and the crystals are isotropic. Some crystals of medium, when along a certain direction by mechanical force deformation, produces polarization effect; when the mechanical force is removed, will return to the neutral state, when it is under pressure, some crystals may produce electricity effect, this is the so-called polarization effect. Scientists have developed a pressure sensor based on this effect. Piezoelectric materials mainly used in piezoelectric sensors include quartz, potassium tartrate, sodium salt and phosphoric acid two hydrogen amine. The quartz (silica) is a kind of natural crystal, piezoelectric effect in the crystal is found in, in a certain temperature range, the piezoelectric properties has always been there, but after the temperature exceeds this range, the piezoelectric properties disappear completely (the high temperature is the so-called "Curie point").
- Q: I use the analog module of Delta PLC, the signal of the sensor is 4-20mA standard signal, I received by PLC module is 0-20mA, how do I deal with, I consider a method, calculate the 4mA value of PLC is lower than this value, the value of the case, only, don't know I hope you handle this situation, the exchange, thank you
- This is not difficult. 1. determine the coefficient: (32000-6400) the physical quantity represented by /20mA, draw the numerical quantity of unit physical quantity in PLC, and use real number to do. 2. (*-6400) / factor = actual quantity of physical quantity, using real number to do. The * here is the D value of the A-D, such as the AIW value of the SIEMENS PLC.PLC:PLC, commonly known as power line access, is called Power Line Communication in English, mainly means of transmitting data and voice signals by means of power lines. PLC's full English name is Power Line Communication, that is, power line communication. By making use of power lines as the communication carrier, so PLC has great convenience, as long as in any room where power outlet, no dialing, high-speed Internet access can immediately enjoy 4.5~45Mbps, to browse the web, call, and watch the movie in the line, so as to realize the collection of data, voice and video. And power in one of the "four nets"! In addition, the home phone, television, audio, refrigerators and other appliances connected by PLC, centralized control, to achieve the "smart home" dream. At present, PLC is mainly used as an access technology, providing broadband network "last mile" solution, applicable to Yu Jumin District, schools, hotels, office buildings and other fields.
- Q: The pressure sensor detects the pressure and sends it to the PLC. Then the PLC sends an electric signal to drive the coil. What about the pressure sensors and the PLC?
- I think this system depends on your requirement.Do you need a limit on the pressure sensor for the drive coil, or do you analyze the whole range?.If you take a value, you do a circuit directly into the TTL level, and then connect to the Input port of PLC.If you want full range values, you need to extend a AD module on the PLC. Software analysis. Jade Wright
- Q: MPX5010 pressure sensor pin diagram is how, and how to connect the microcontroller?
- MPX5010 has a variety of packages (867B-04, 867C-05, 867E-03, 867F-03), and the order of the pins in different packages is different.MPX5010 uses a single 5V power supply, its working principle is the change of current signal through the film pressure acquisition unit weak, after the film temperature compensation unit complementary temperature compensation, the first stage, after the second stage of realizing potential alignment with supply voltage reference end, and the output pin output.In simple terms, MPX5010 useful pins only three: power input Vs, ground input GND, analog voltage output Vout. Where the Vout output voltage represents the induced pressure, the nominal sensitivity is about 450mV/mm hg.So, if you use a single 5V microcontroller, you can use the built-in or external ADC voltage sampling conversion, by the microcontroller through linear calculation of pressure sensor. If you use 3.3V microcontroller, you need to collect through the external ADC, or first through a more precise amplification adjustment, and then through the built-in ADC acquisition.Specific content, you can go to the official website of NXP, check MPX5010 data book, application notes, and reference design.
- Q: E+H sensors
- The pressure sensor is subject to pressure, outgoing current, and voltage signals.
- Q: Excuse me, the pressure sensor passes the signal to the monolithic integrated circuit, the monolithic integrated circuit produces the signal control, the alarm circuit's principle is what? Preferably with a circuit diagram.
- Pressure sensor signals can not be directly transmitted to the microcontroller, nor is it as LS said directly to the AD conversion. Because the electrical signals produced by the sensors are weak, amplification must be made.Now let me give you more details. First, what is the pressure sensor, the pressure sensor is the pressure values are converted into electrical signal equipment, that is measured to a certain pressure value, voltage or current signal will output a certain value, generally proportional to the electrical signals, the greater the pressure the greater the output. Second, the signal output of the pressure sensor is weak, must use the amplifier module, can generally be used in the design of operational amplifier circuit, or instrumentation amplifier (a chip), if the demand is not high with operational amplifier. Third, after the amplification of electrical signals to the microcontroller, microcontroller corresponding to the electrical signal AD conversion value to determine the pressure size. Fourth, the size of the pressure value according to the MCU, see pressure warning of your value is how much, such as pressure, you want more than 3MPa is the value of risk, you can write microcontroller program, to judge the value, if more than this value will alarm. The alarm circuit can be connected with the buzzer or the LED light through the IO port of the singlechip. SCM write programs and the like, you estimate know the concept, I will not say more. Ha-ha
- Q: Why are customs sensitive to pressure sensors when they are declared? Also said that entered the high-risk inspection, what do you mean? The reason is that?
- The so-called high risk, there are many reasons, cited a few, for reference purposes only:1. customs in a period of time, to some certain number, name, to focus on the audit.2., customs found that in a period of time, a large number of imports and exports of certain products, need to focus on audits.3., the product itself involves import and export permits, the need to focus on audits.
- Q: What are the pressure sensors for?
- By means of signals, the pressure is converted to digital display, visualized on the computer, so that it is easier to adjust the pressure
- Q: What's wrong with the Fawkes air pressure sensor?
- This situation will lead directly to the engine underpowered, trembling, idle instability.
- Q: Where is the BYD F6 pressure sensor in the car?
- Hello, BYD F6 air temperature sensor belongs to category of intake system, intake air temperature sensor according to different models of different installation position most is installed between the air cleaner housing and the solar term door body part model and air flow meter inlet pressure sensor to form a whole
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Earth Pressure Transducer
- Ref Price:
-
- Loading Port:
- Shekou
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 10000 pc/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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