Brief introduction of air pressure sensor
The barometric sensor is used to measure the absolute pressure of gas. It is mainly suitable for physical experiments related to gas pressure such as gas law, and can also be used for measuring dry and non-corrosive gas pressure in biological and chemical experiments.
Function of air pressure sensor
The national standard GB7665-87 defines a sensor as "a device or equipment that can sense a specified measured signal and convert it into a usable signal according to certain rules, usually consisting of a sensitive element and a conversion element". Air pressure sensor is a detection device, which can sense the measured information and convert the sensed information into electrical signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control. This is the first step to realize automatic detection and control.
In addition to analog output products, digital output products of air pressure sensors also occupy a large market in the market. General digital output products are mostly patch, miniature and modular products (such as BA5803, BP5607, BT56 1 1, etc.). ). Digital output products do not need to be processed by amplification circuit, temperature compensation circuit and zero calibration, so it is more convenient to use.
Air pressure sensor parameters
Quantity? Cheng:-0.1~ 0 ~1~150 (MPa)? Distance transfer switch
Comprehensive accuracy: 0. 1%FS, 0.25%FS, 0.5%FS.
Output signal: 4 ~ 20ma (two-wire system), 0 ~ 5v, 1 ~ 5v, 0 ~ 1~5V (three-wire system)? , RS485 (digital signal)
Power supply voltage: 24V DC (9 ~ 36V DC)
Medium temperature: -20 ~ 85℃ (normal temperature type) -20 ~ 200℃ (medium temperature type) -20 ~ 600℃ (high temperature type)
Ambient temperature:? Normal temperature (-20 ~ 85℃)
Zero temperature drift: ≤ 0.05% fs℃
Range temperature drift: ≤ 0.05% fs℃
Compensation temperature: 0~70℃
Safety overload: 150%FS
Ultimate overload: 200%FS
Response time: 5? Milliseconds (up to 90%FS)
Load resistance:? Current output type: 800Ω max; Voltage output type: greater than 5kΩ
Insulation resistance:? More than 2000 mω (100VDC)
Sealing grade: IP65
Long-term stability: 0. 1%FS/ year.
Vibration effect:? When the mechanical vibration frequency is 20 Hz ~ 1000 Hz, the output variation is less than 0. 1%FS.
Electrical interface (signal interface):? Hessman connector+quad shielded wire
Mechanical connection (threaded interface): M20× 1.5, etc. Other threads can be designed according to customer requirements.
Sensors are very practical in production mode, and people can control the machine more accurately through sensors. Sensors are often used as working detection equipment. With the demand of society, people are developing more and more sensors. At present, there are more and more kinds of sensors on the market, such as pressure sensors, current sensors, vibration sensors, temperature sensors and so on. People use sensors more and more widely, such as mobile phones, switches and so on.
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