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.
| Working voltage | DC5V±0.1V | |
| Frequency | / | |
| Water level |
Frequency kHz water level mm 21.4 325+20/-40 21.6 309±20 22.6 225±20 22.8 213±10 23.4 163±10 23.6 154±5 24.4 92±20 24.8 70±30 ≥25.5 0 |
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| 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 |
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| Life resistence function | Sensors in the rated voltage (DC5V), high level applied 30000 times to 20 times / min speed, the change of high water levels should be 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 |
Frequency-Water level curve
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