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Resistant Fuel Level Sensor

resistant fuel level sensor is according to the principle of capacitance, using rf capacitor jump to change measuring technology to realize the measurement of height of liquid. Output signal with high level change and continuous change, no...
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  • Wire output

    Single resistance signal (two wires output )

    Voltage testing

    <48V

    Current testing

    <125mA

    Testing precision

    2%~10%

    Testing sensitivity

    8mm、12mm 、16mm 、21mm

    Basic error

    ±(R*1.5%+1.5)R

    Working temperature

    -40℃~+80℃

    Retardation time

    0.1 second

    Service life

    5000000 times

    Overall structure

    Column type

    Main body material

    SUS304


    level sensor directions for use

    resistant fuel level sensor is according to the principle of capacitance, using rf capacitor jump to change measuring technology to realize the measurement of height of liquid. Output signal with high level change and continuous change, no steps, high accuracy, high reliability. The elastic components, is no moving parts, impact resistance, easy installation, can be installed on all occasions for gasoline, diesel oil, oil level of the hydraulic oil and other various liquid for accurate measurement and control.

    First ,Performance index

    Second, the operating instructions

    1, connection as follows:

    RS232: the way the sensor output has 4 line

    Red 24 V +

    Black 24 V-(RS232 ground)

    Blue RS232 (TXD) The computer the sending end

    Yellow RS232 (RXD) The computer the sending end

    RS485: the way the sensor output has 4 line

    Red 24 V +

    Black 24 V-(RS232 ground)

    Blue RS485 A

    Yellow RS485 B

    4 ~ 20 mA: the way the sensor output with 2 lines Red 24 V +

    Black 24 V-

    0 ~ 5 V: the way the sensor output has 3 line

    Red 24 V +

    Black 24 V-

    Blue 0 ~ 5 V voltage output

    2、Matters need attention

    RS232 / RS485/0-5 V / 4 ~ 20 signal can only be a, can choose any use one of them.

    RS485 bus can also meet DuoGe sensor, but prior to set each sensor address, each sensor address must be the only, in case the bus locked. RS485 bus USES is half-duplex chip, so read data should be set aside time to module response, read the speed can not be too fast, read for two orders of time interval between not less than 200 ms.

    3Calibration process

    Sensor adopts the technology of the microcomputer, without calibration can be applied directly to all kinds of weak corrosive liquid measurement

    4、Sensor installation

    resistant fuel level  sensor2295.png

    1. If the old car is to be removed the original sensor; New car installed directly.

    2. Before installation, please check the attachment: flange, rubber pad, o-rings, whether is complete and screw

    3. Will O type in the root of the sensor trap

    4. Rubber pad and flange constructed and the fuel tank to good hole a flange,;and the screw good, should be tightened in turn symmetrical strength, to ensure that each direction stress even, avoid oil leak.

    5. The sensors with a wrench into tighten can complete the installation of the sensor

    6. Use a special tool to open sensor cover, according to the definition by good power and communications respectively line

    7. Check line normal, can connect the sensor power supply, the sensor can work normally


    RS232 / TX485 / 0-5V / 4 ~ 20mA signal can only exist one, you can choose to use one of them. TX485 bus can simultaneously access multiple sensors, but in advance to set the communication address of each sensor, each sensor's communication address must be unique to prevent the bus lock. RS485 bus is a half-duplex chip, so read the data should be given to the module to respond to the time, read the speed can not be too fast, continuous reading when the time between the two instructions can not be less than 200ms.


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