Commonly used climatic environment test equipment terminology analysis
First, the test equipment volume
The actual volume of the space defined by the inner wall of the environmental test chamber, expressed in m2
Second, the work space
The part of the high and low temperature test chamber that can keep the specified test conditions within the specified deviation range
Third, the test box steady state
The state in which the self-change of any point in the working space of the test box reaches the performance requirement of the device itself
Fourth, temperature deviation
Under the steady state of the test box, the measurement temperature of the working space is measured within the specified time within the specified time and the upper and lower temperature difference between the lowest temperature and the nominal temperature.
Five, relative humidity temperature difference
In the steady state of the test box, the measured relative humidity and the relative relative humidity of the highest relative humidity and the nominal relative humidity are measured within the specified time in the working space.
Sixth, temperature fluctuation
The amount of change in relative humidity with time at any point in the working space at a specified time interval in the steady state of the test chamber.
Seven, relative temperature fluctuation
The amount of change in relative humidity over time in the workspace over a specified time interval.
Eight, temperature uniformity
The maximum difference between the temperature of any two points in the working space at a certain instant in the steady state of the test box.
Calculation method, under steady state, the arithmetic mean value between the measured maximum temperature and the lowest temperature in each measurement within 30 minutes of each measurement point in the workspace
Nine, relative humidity uniformity
The maximum difference between the humidity of any two points in the working space at a certain instant in the steady state of the test box.
Calculation method, under steady state, the arithmetic mean value between the measured maximum temperature and the minimum humidity in each measurement within 30 minutes of the working space
Ten, temperature change rate
The rate of transition between the two specified temperatures measured at the geometric center point of the test chamber workspace, expressed in °C/min.
XI. Average temperature change rate every 5 minutes
The average transition rate per 5 min between the two specified temperatures measured at the geometric center point of the test chamber workspace is expressed in °C/min.
Twelve, pressure deviation
When the test chamber is in steady state, the working space measurement point measures the upper and lower deviations of the highest air pressure and the lowest air pressure from the nominal air pressure within the specified time.
Thirteen, the rate of change in air pressure
The rate of transition between the two specified air pressures measured at the geometric center point of the test chamber workspace, using kPa/min
Fourteen, temperature recovery time
After reaching a steady state at a specified temperature, the working space temperature is from the time it takes to load the load to the time it takes to restore the original steady state.
Fifteen, temperature overshoot
When the equipment is warmed or cooled to the specified temperature, the actual temperature of the working space exceeds the allowable deviation range of the specified temperature.
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