UL859 温升测试问题 求教

民前八方

UL859 在正常温升时，标准要求：
Appliance is supported as in normal service (NTC side was down)
An electrical heating element intended for application to the hair is to be loaded with a moistened cloth and then operated until the moisture has been evaporated and the heating surface of the unit has attained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during which it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be conducted a second time. The complete cycle is then to be repeated again. Temperatures are to be measured throughout the test.


我在测试的时候，the heating surface （发热铝板外表面）达不到204度，那我应该如何测试？多久更换一次湿布？

直发器和卷发器都是没有锁扣装置，是否只要测试开夹就可以了？

请教