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How to carry out temperature and humidity uniformity test in clean room? - Frequently Asked Questions

by:PHARMA     2022-07-01
How to perform temperature and humidity uniformity test in clean room?

There are two levels of dust-free room temperature and humidity test, one is the ordinary test of temperature and humidity uniformity, which is suitable for normal environmental requirements, and the second is the comprehensive test of temperature and humidity uniformity, which is suitable for areas with stricter control requirements ;Common tests are used to certify HVAC systems for clean rooms...
Text label: clean room pharmaceutical cleanroom, temperature and humidity uniformity test, clean room test

How to conduct temperature and humidity uniformity test in clean room?


There are two levels of dust-free room temperature and humidity test, one is the ordinary test of temperature and humidity uniformity, which is suitable for normal environmental requirements, and the second is the comprehensive test of temperature and humidity uniformity, which is suitable for areas with stricter control requirements The general test is used to certify that the HVAC system of the clean room will maintain the temperature and humidity at the specified levels required for essentially comfort, the comprehensive test is used to certify that the HAVC system of the clean room will maintain the temperature and humidity at the comfort level and the specified levels required for both temperature and humidity control. Before the temperature test, it is necessary to verify that the test, adjustment and balance of the HVAC system have been completed; before the test, let the HVAC system run 24H under automatic control; at least Or the sensor is placed at the designated position of the working height, and the sensor must have sufficient time to stabilize to make the reading accurate; record the time and temperature readings at each position of each temperature-controlled work area.


Before the humidity test, it is necessary to verify that the test, adjustment and balance of the HVAC system have been completed. Before the test, let the HVAC system run under automatic control for 24 hours; each temperature and humidity control area should measure the relative humidity at least one location. , Put each hygrometer or sensor at the designated working height and position to stabilize the sensor; measure and record the humidity reading while measuring the temperature. Establish at least 1 temperature and relative humidity measurement point in each temperature control zone; multiple points may be set in each zone as specified; before testing, verify that the HAVC system testing, adjustment and equalization work has been completed; existing The heat source should be marked according to the position relative to the test sampling; verify that the airflow uniformity test has been completed and qualified; the HVAC system should be operated under normal automatic control conditions for 24 hours before the test; a temperature and humidity sensor should be placed at each designated working height sampling position , to make it stable; at each location, at least every 6min time interval to measure at least 2H of temperature and humidity at the same time and record the results, generally measure 22H for each area to ensure its uniformity in time. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean rooms.
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