Technical requirements for water flow indicator
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Technical requirements for water flow indicator
1) maximum working pressure
The maximum working pressure of water flow indicator is 0.6-4.0mpa.
2) delay performance
The delay time of water flow indicator with delay function shall be adjustable.
The delay time measured by the water flow indicator during the test shall be within 2s-90s.
3) working cycle
The water flow indicator shall be operated in 500 cycles, which shall be sensitive and reset quickly.
4) corrosion resistance
The water flow indicator shall be subject to corrosion test according to the provisions of the standard. After the test, any component of the water flow indicator shall be free of corrosion damage such as cracks affecting the performance. 6.8 sensitivity test shall be conducted after the test, and the test results shall meet the requirements of the standard.
5) rigid non-metallic materials
After the air aging test, the test piece shall be free from bending, creep, crack or other damage affecting the function of water flow indicator. If the blade is made of polyethylene material, it shall be resistant to environmental stress cracking, and there shall be no cracks after the test.
6) impact resistance
After three times of 6.8j energy impact, there shall be no loose parts to prevent the action of water flow indicator.
After the test, the shell of the water flow indicator shall be checked. If the shell breaks without affecting the action of the water flow indicator, it is qualified. If the enclosure is used for dust or moisture prevention and the enclosure is broken, the water flow indicator is unqualified.
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Xinxiang Pan Chao Instruments Co., Ltd.
Tel: +86 13343800331
Contact person:Carrie Niu
Fax: 0373 303 0331
Email:sales@panchaoglass.com
