Meters. Precautions for the use of sensors

Abstract: The information on the precautions for the use of meters and sensors is provided by the excellent manufacturers of flowmeters and flowmeters. In construction machinery vehicles, the role of instruments and sensors is obvious, which can effectively monitor the working status of the whole machine and components. If it does not work normally, it cannot feed back information to the operator, and it is impossible to find hidden faults in time. one. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the article on the precautions for the use of meters and sensors. In construction machinery vehicles, the role of instruments and sensors is obvious, which can effectively monitor the working status of the whole machine and components. If it does not work normally, it cannot feed back information to the operator, and it is impossible to find hidden faults in time. 1. Precautions for the use and installation of the instrument. 1. The meter must be used with its companion sensor. 2. The wires should be connected reliably and should not be in contact with other metal conductors. 3. When installing and disassembling, do not knock or bump. Ammeter and voltmeter should also pay attention to 1. The positive and negative polarities of the ammeter cannot be reversed. In general, the construction machinery is the negative ground of the whole vehicle, then the ammeter“?”The terminal should be connected to the positive pole of the battery.“+”The terminal should be connected to one end of the alternator armature (B+). 2. Before wiring the ammeter, clean the contact surfaces of washers, nuts, bolts, etc. with sandpaper. When installing the nuts, apply a little clean oil to prevent rust and facilitate disassembly. The flat insulating washers should be in good condition, and the insulating washers are between the spring washers. A flat gasket should be installed and connected firmly, so as not to cause the wire to heat up due to poor contact, or even burn out the instrument and wiring harness. 3. When wiring the ammeter and voltmeter, you should pay attention to turn off the power supply of the whole vehicle to avoid short circuit. 4. on the voltmeter“+”Connect the battery to the positive pole,“?”The pole is connected to the negative pole of the battery, and it cannot be wrongly connected. 2. Precautions for the use and installation of the sensor. Fuel sensor 1. The movement of the float in the fuel tank should be flexible, otherwise the indication will be inaccurate due to the interference between the float and the partition of the fuel tank. 2. The grounding of the oil sensor should be reliable. 3. The resistance value of the variable resistance sensor of the moving magnet oil gauge will increase as the oil level inside the tank increases. Temperature sensor 1. The grounding of the sensor should be reliable, and the wire connection of the sensor should not be short-circuited. 2. The thermistor of the moving magnetic water temperature gauge sensor will decrease in resistance value as the temperature rises. Pressure sensor 1. The variable resistance value of the moving magnet pressure gauge increases as the pressure increases. 2. When installing the pressure sensor, do not screw the housing directly. 3. If the sensor has an alarm, the sensor line and the alarm line cannot be reversed. Speed ​​sensor 1. Make sure that the clearance between the bottom of the sensor and the top of the engine tooth is 0.8 to 1.0 mm, otherwise the indication will be inaccurate. The correct installation method is to screw the sensor to the bottom first, that is, the bottom of the sensor touches the top of the flywheel tooth of the engine, then turn it counterclockwise 2/3 turn, and then fasten it with the back tightening nut. 2. When idling, the speed sensor outputs the induced voltage Urms>1.0V. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Instrument. Precautions for the use of sensors'

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