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    SW-1

    SW-1 water level sensor

    SW series water level sensor is a component designed for checking water level. According to the water level, the product sends oscillation frequency to the appliance’s control board. It depends on the pressure, magnetic field, and electric signal to realize the function.

    Basic parameters and main technical performance index

      Working voltage DC5.1V±0.1V
      Frequency  /
       Water level

    Frequency kHz  water level mm

    26.7±0.3   0

    26.30    62±30

    24.91   183±25

    24.46   222±25

    24.03   262±20

    23.63   302±15

    23.13   352±15

    22.57   410±20

    Electric performance Insulation resistance

    Insulation resistance between terminal and mounting plate ≥100MΩ 

     working frequency  /
    Environment adaption High temperature Put the product in(60±3)℃ for 48h, then back to normal temperature for 1h. After that, water level-frequency curve should meet requirements.
    Low temperature Put the product in(-20±3)℃ for 48h, then back to normal temperature for 1h. After that, water level-frequency curve should meet requirements.

    Humidity 

    Put the product in (40℃±3, RH95%)for 168h. After that, apply 1200V between  the terminal and mounting plate for 1s. There should be no breakdown or flashover, and the insulation resistance between terminal and mounting plate ≥10MΩ

      Durability Test

    After acting 50,000 times at a speed of 20 times/min under rated voltage, the water level change of each gear is less than 15mm.

      Environmental requirements The products and packaging are in line with the EU RoHS directive 2011/65/EU
      Working Conditons

    Working temperature: -10℃,+50℃
    Max altitude: 2500M  
    Max humidity: RH95% (+25℃)
    Does not contain flammable, explosive and corrosive gas or steam
    No significant shaking or severe shock and vibration

    Frequency-Water level curve



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