山西11选5走势图基本走势
  • SW-2water level sensor

Basic parameters and main technical performance index


   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 

  Electric performance  Insulation resistance Between the terminal and the mounting plate with DC500V megger test insulation resistance than 100MΩ
 working frequency  /
 Environmental adaptation performance  Heat resistant  Sensor placement for 168 hours at a temperature of 60 soil and constant temperature box of 2 ℃, after taking out under normal temperature and humidity conditions for 4 hours, the amount of change in high water level within 15mm.
 coldness resistence  Sensor placement for 168 hours at a temperature  0土 2℃ constant temperature box, after taking out under normal temperature and humidity conditions for 4 hours, the amount of change in high water level within 15mm
humidity-resistance

The sensor at a temperature of 60℃+3℃ constant temperature and humidity conditions of relative humidity 90%-95% placed under 24 hours, after taking out to wipe the surface of the water, the sensor terminal and the shell insulation resistance should be in more than 10MΩ

The sensor at a temperature of 40℃土 2℃, constant temperature and humidity conditions of relative humidity 90%-95% placed under 168 hours, after taking out at normal temperature and humidity conditions for 4 hours, the amount of change in high water level within 15mm

   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
   Using the normal work conditions

ranges from 0℃ to 40℃.

Altitude can not be higher than 2500 meters.

Comparative wetness should be less than ninety percents.(when the temperature is more than 25℃)

There is not gas,steam,chemical deposition, dust,explosive and corrosive medium to affect the insulation in the working place.

There is not serious vibration and bumping in the working place.

Frequency characteristics of water level curve







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山西11选5走势图基本走势
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