Distribution requirements of refrigerator temperature and humidity monitoring

Product functions must meet the requirements of the new GSP. Arrange monitoring points according to the specification requirements.

1. The measuring points installed in the cold storage should be classified products, that is, the temperature and humidity sensors should be separated from the transmitter. When installing, the temperature and humidity sensor should be placed in the cold storage, and the transmitter should be installed outside the cold storage. The transmitter should have its own LCD temperature and humidity display, so that you can know the internal temperature and humidity without opening the refrigerator door.

There shall be no less than 2 monitoring points for flat single warehouses below 2.20m2, no less than 3 monitoring points for 20-50m2 and no less than 4 monitoring points for 50-150m2; There shall be at least five monitoring points at 15 1-300m2. If it is less than the above requirements, it cannot pass the inspection of the drug supervision department.

3. During installation and debugging, attention should be paid to controlling the temperature range at 2~8℃ and the humidity range at 45~75%. If the temperature exceeds the limit, there should be three kinds of alarms, namely, the local buzzer alarm of the transmitter, the acousto-optic alarm of the control room and the SMS alarm of the administrator.

4. The sensors of the temperature and humidity monitoring system during on-site verification must be calibrated by the metrological department at or above the provincial level, and relevant certificates shall be issued, otherwise the report will be invalid.

5. The distribution of equipment used to measure the temperature and humidity system on site must conform to the refrigeration principle, and the distribution of test points should be verified reasonably in combination with the "refrigeration system design principle". Each verification object adopts one-time synchronous layout to ensure the synchronization and effectiveness of data collected at each measuring point. In the reservoir area to be verified, the unified layout should be comprehensively considered, and the warehouse should be monitored by layers in the height direction, which is divided into three layers: the first layer is 10cm from the ground, the second layer is in the middle, and the third layer is 30cm from the top of the warehouse. The vertical spacing is not more than 2m, and the horizontal spacing is not more than 5m. Horizontal direction is 30cm away from the wall.