The pressure sensor is divided into analog output and digital output according to the way of signal output. The wiring method is also slightly different.
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1. Analog output pressure sensor wiring method:
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Among them, the analog output type air pressure sensor generally has three wires, which are ground wire (GND), power supply positive electrode (VCC) and signal output line (OUT).
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- GND ground cable: Connects to the negative terminal (or ground) of the power supply and serves as the reference zero of the signal output.
- VCC power supply positive: Connects to the positive terminal of the power supply to supply power to the sensor.
- OUT Signal output cable: Connects to the input end of the data collector or controller to output pressure signals.
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2. Digital output pressure sensor wiring method:
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The digital output pressure sensor generally has four wires, which are ground wire (GND), power supply positive electrode (VCC), signal output line (SCL) and signal output line (SDA).
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- GND ground cable: Connects to the negative terminal (or ground) of the power supply and serves as the reference zero of the signal output.
- VCC power supply positive: Connects to the positive terminal of the power supply to supply power to the sensor.
- SCL signal output line: Connects to the input end of the data collector or controller and serves as the clock line for sensor signal output.
- SDA signal output cable: connects to the input end of the data collector or controller as the sensor signal output data cable.
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It should be noted that the wiring methods of different models of pressure sensors will be different, and the correct connection should be made according to the wiring instructions of the sensor. At the same time, pay attention to the size of the voltage and current when wiring, do not exceed the rated voltage and current of the sensor, otherwise the sensor may be damaged.
1 Need to be in accordance with the requirements of the specific model and manufacturer 2 Generally speaking, the wiring of the pressure sensor usually includes three parts: power wiring, ground wiring and signal output wiring. Generally, power and ground cables are connected to the circuit board using power and ground connectors. Signal output cables need to be connected to devices such as controllers or data collectors.
For specific wiring details, please refer to the product manual or consult the manufacturer.
3 During the wiring process, keep it dry, clean, and fixed to prevent loose plug or poor contact to ensure the normal operation of the sensor and the accuracy of data.
In addition, it is also necessary to comply with the relevant safety regulations, such as cutting off the power supply before wiring.
The power supply line is generally red and black, the signal line is blue and green, the line color is not clear, then take the multimeter test, the voltage value of the power supply line portable logging instrument is generally about 12v, the comprehensive logging instrument is generally about 12-24v, and the signal line is below 5v in the state of no signal.
In addition, if the logging instrument module is not matched, how to connect there is no signal and the logging instrument line is generally five, four in the skin, and one outside the skin, which is the standard configuration of the signal line, but the quality of the line will be easy to break and cannot be grounded, will leak, and the most serious case will be struck by lightning, burning modules, burning junction boxes, and even burning instruments, I hope to help you