The terminology of standard climate environment test equipment for high and low temperature test chambers is as follows:
Testing equipment volume: the actual volume of the space defined by the inner wall of the high and low temperature test chamber, expressed in m3;
Working space: the part of the space in the high and low temperature test chamber that can maintain the specified test conditions within the specified deviation range;
Test chamber (room) stable state (stdady state of test chamber): the state when the amount of self-variation at any point in the working space of the test chamber reaches the performance index of the equipment itself;
Temperature deviation (temperature deviation): under the stable state of the high and low temperature test chamber, the actual measurement of the maximum and minimum temperature deviations from the nominal temperature of each measurement point in the working space within the specified time;
Relative humidity deviation (relative humidity deviation): Under the stable state of the test chamber, the actual measurement of the maximum relative humidity and the minimum temperature of the upper and lower deviations of the relative humidity from the nominal relative humidity within the specified time at each measurement point in the working space;
Temperature fluctuation: under the stable state of the test chamber, within a specified time interval, the amount of temperature change with time at any point in the working space;
Relative humidity fluctuation (relative humidity fluctuation): under the stable state of the test chamber, the relative humidity changes with time at any point in the working space within the specified time interval;
Temperature uniformity: the maximum difference between the temperature of any two points in the working space at a certain instant in the stable state of the test chamber, calculation method: under stable conditions, each measuring point of the working space is within 30min (measured every 1min) Once) The arithmetic average of the difference between the highest temperature and the lowest temperature measured in each measurement;
Relative humidity uniformity (relative humidity uniformity): under the steady state of the test chamber, the maximum difference between the relative humidity of any two points at a certain instant in the working space, calculation method: under steady state, each measuring point of the working space is within 30min ( (Measured every 1min) The arithmetic average of the difference between the highest relative humidity and the lowest relative humidity measured in each measurement;
Temperature variation rate: the rate of change between two specified temperatures measured at the geometric center of the working space of the test chamber, expressed in ℃ / min;
Temperature average variation rate of per 5 minute (temperature average variation rate of per 5 minute): the average transition rate per 5 minutes between two specified temperatures measured at the geometric center of the test chamber working space, expressed in ℃ / min; high and low temperature test chamber standard Climatic and Environmental Test Equipment Terminology (Previous Section)
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