It is well known that there are two types of rapid temperature change test chamber: linear and nonlinear. But do you know the specific difference between them? Next, Yuanyao Test Equipment will briefly introduce the differences between linear and nonlinear of rapid temperature change test chambers:
Linear rapid temperature change test chamber refers to the uniform speed of heating and cooling as well as the same speed in each period. If the heating rate in a certain period is set as degrees per minute, it means the rate in the whole period is fixed per minute, which will not be some degrees per minute and the same as the cooling rate in each period. Briefly speaking, the speed of heating and cooling is under the control of test chamber instrument.
Nonlinear rapid temperature change test chamber: the heating speed is fast at the beginning but increasingly slower cooling later. If the heating undergoes at some degrees per minute in a period, it means the heating and cooling undergoes at an average degree every minute in this period. Nonlinear represents fluctuation in each minute averagely when the ramp rate is out of control of the instrument.
The ramp rate of linear rapid temperature change chamber temperature (actually the average speed in the 5th minute). In fact, for the test chamber with rapid temperature change, it is the most difficult to keep the linear ramp rate. The most crucial is the last 5 minutes in the drop rate which is the cooling rate that test chamber can achieve.
The ramp rate of nonlinear rapid chamber is the entire average ramp rate (within the temperature change range of the test chamber, the ratio of the difference between the highest temperature and the lowest and the time). At present, all the high and low temperature test chambers produced by the domestic and foreign environmental test chambers manufacturers are nonlinear ramp rate.
The above is what Yuanyao Test Equipment shares about the difference between linear and nonlinear of temperature rate test chamber.