Detection of temperature, humidity, illumination, etc. in clean room
Detection of temperature, humidity, illumination, etc. in clean room
For temperature and humidity detection in the clean room, the measuring points should be arranged at a representative location in the constant temperature work area; if there is no constant temperature requirement, the points can be arranged in the center of the clean room; the measuring points should generally be greater than 0.5m from the outer wall surface, and the distance The ground is 0.8m, or according to the size of the constant temperature zone, respectively...
Text label: temperature and humidity detection in clean pharmaceutical cleanroom, self-cleaning time of illumination in clean pharmaceutical cleanroom
Testing of temperature, humidity and illumination in clean room
For temperature and humidity detection in the clean room, the measuring points should be arranged at a representative location in the constant temperature work area; if there is no constant temperature requirement, the points can be arranged in the center of the clean room; the measuring points should generally be greater than 0.5m from the outer wall surface, and the distance The ground is 0.8m, and it can also be arranged on several planes at different heights from the ground according to the size of the constant temperature zone; according to the requirements of the temperature and humidity fluctuation range, the detection should be carried out continuously for 8-48H, and the interval between each reading should not be greater than 30min; For areas with temperature and humidity fluctuation requirements, the measuring points should be arranged at the return air outlet or at a representative location; the room temperature fluctuation range is organized into a cumulative statistical curve according to the maximum value of the deviation control temperature in each temperature of each measuring point. If the deviation value of more than 90% of the measuring points is within the control range of room temperature, it is in compliance with the design requirements, otherwise it is not in compliance; the fluctuation range of relative humidity can be implemented according to the regulations on the fluctuation range of room temperature.
Illuminance measurement generally only measures general lighting except local lighting, and uses a mobile illuminance meter for measurement; each measurement of illuminance must be carried out 15 minutes after the light is turned on, when the light source output becomes stable, and the room temperature has become stable. ; The measurement is arranged on a plane 0.85m away from the place name, and the points are arranged at a distance of 1-2m, and the measurement is 1m away from the wall; the measured illuminance value is recorded on the measuring point layout map, and the average illuminance is calculated. Air flow pattern detection, for non-unidirectional flow clean room, take 3 measuring point sections, representative longitudinal and cross sections of the center of the air supply and return air and the horizontal plane of the working area height, on the longitudinal section, the distance between the measuring points It is 0.2-0.5m, on the horizontal plane, the distance between the measuring points is 0.5-1m; for the horizontal one-way flow, take 5 measuring point sections, the longitudinal section of the clean room, the horizontal plane of the working area, 0.5m away from the supply and return air outlets The two longitudinal sections and the longitudinal section at the center of the room, the distance between the measuring points is 0.2-1m; for the vertical one-way flow clean room, four measuring point sections are taken, the longitudinal section, the cross section, 0.8m and 1.5m from the ground The distance between the measuring points is 0.2-1m. The angle of the airflow direction deviating from the specified direction in the working area is not more than 15°. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for dust-free workshops and clean workshops.
In the detection of noise in the clean room, the layout of measuring points should be equally divided according to the area, and one point should be set every 50m2. The measuring point is located in the center, and the height of 1.1-1.5m from the ground should be set according to the technological requirements; the measured noise value should meet the design requirements. It is required or meets the design specifications of clean workshops. The air-state noise level in the clean room should not exceed 60dB(A) for non-unidirectional flow, and 65dB(A) for unidirectional flow and mixed flow. Determination of self-cleaning time: The project must be stopped in the clean room for a considerable period of time, and the initial indoor dust concentration is close to the atmospheric dust concentration; after meeting the above requirements, turn on the purification air-conditioning system, and regularly read the value of the dust particle counter until the indoor Until the dust concentration reaches the minimum, this period of time is the self-cleaning time.
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