The FK2000-10A Wind pressure switch developed by our factory may be used linked safty switch when family fuel gas water heater exhausts forcedly. This product has the character such as compact structure,sensitive action,reliable and stable property.
Main Technology Character:
1、Suitable adjust wind pressure 0.8mbar～10mbar precision ±0.1mbar
2、Suitable voltage 1～30VDC,125VAC
3、Suitable current 0.1A
4、Work temperature -20～+80oC
5、Work humidity <85%RH
6、Machine life 100000 times exceed
7、Life of eletric device 100000 times exceed | 
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Work Principle：
The control opening of wind pressure switch are divided into L(-) and H(+).L(-)is negative pressure control opening.H(+) is positive pressure control opening.
The original position of switch is OFF.
When sample is negative pressure,the plastic pipe will be inserted into L(-)control opening.When sample is positive pressure ,the plastic pipe will be inserted into H(+)control opening.The position of switch can be changed into ON.
When water heater fan is opened,wind opening preesure is about 1.5mbar.After plastic pipe of test wind opening is insered in to wind pressure switch ,fan will form negative pressure to wind pressure switch.
The wind pressure switch is changed to "ON" position. | 
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