一、试验方法(一)一般要求 1、喷头采用可以调节压力的供水系统进行试验。 2、试验分性能试验、耐久试验、生产试验和出厂试验。 3、应当用常温清水进行性能试验。所谓常温是指0～40℃范围,此时清水的单位体积重量可以看做是1公斤/升。 4、试验前应当测量喷咀的实际直径。对非圆形喷咀,应当测量过水面积。 5、试验用仪表应当进行调正和定期校正。 First, the test method (A) of the general requirements 1, the nozzle pressure can be adjusted with the water supply system for testing. 2, test points performance test, durability test, production test and factory test. 3, should be used at room temperature water performance test. The so-called room temperature refers to the range of 0 ~ 40 ℃, at this time the water volume per unit weight can be seen as 1 kg / liter. 4, the actual diameter of the nozzle should be measured before the test. For non-circular nozzles, the over-water area should be measured. 5, the test instrument should be adjusted and regularly corrected.