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SW-4

SW-4 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 DC5V±0.1V
  Frequency  /
  Water level

Frequency kHz  water level mm

42.35+0.6/-0.4 0   

41.38     55±10  

40.80     82±6  

40.60     92±6  

40.40     100±6

40.20     109±10  

39.80     127±10  

39.40     145±10  

39.00     164±10  

35.80     343±20

Electric performance Insulation resistance

Insulation resistance between terminal and mounting plate ≥100MΩ 

Working frequency  /
Environmental adaptation performance

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

  Life resistence function  At rated voltage with 20 back to the speed of /min continuous action 60000 back to the various parts of abnormal; put 2H at room temperature, before and after test the change of water level under 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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