GB/T 32065.7-2015Environmental test methods for oceanographic instruments - Part 7: Damp heat, cyclic (English PDF)

3.1 General requirements

Marine Instrument alternating standard atmospheric conditions for testing, the test sample installation, test temperature stability test should be separately according to the interrupt handling

The provisions of GB/T 32065.1-2015 in 4.2,6.1,6.2 and Chapter 7 will be.

3.2 Test Equipment

3.2.1

Test equipment shall comply with GB/T 32065.1-2015 in Chapter 5.

3.2.2

any point within the air chamber (chamber) of working space should flow, temperature and relative humidity of work space should be uniform, but the wind

Speed should be less than 1m/s.

3.2.3

Test Equipment radiant heat of the heating element should not be directly applied to the test sample.

3.2.4

directly used to generate water moisture resistivity of not less than 500ohm · m.

3.2.5

Condensate chamber (chamber) of the inner wall and the top should not drip onto the test sample.

3.3 Test temperature and relative humidity

Unless otherwise specified, marine instrumentation alternating hot and humid test the following values should be selected test temperature, relative humidity.

a) at room temperature temperature. (25 ± 2) °C, high temperature temperature (40 ± 2) °C;

Relative humidity. 95% phase at room temperature to 100%, the high temperature phase of 90% to 96%;

b) at room temperature temperature. (25 ± 2) °C, high temperature temperature (55 ± 2) °C;

Relative humidity. 95% phase at room temperature to 100%, the high temperature phase of 90% to 96%.

3.4 Test cycle

An alternating cycle 1d. Unless otherwise specified, the test cycle can be selected from the following values. 2d, 4d, 6d, 10d.