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Basic introduction:

The constant temperature and humidity weighing system is to meet the requirements for weighing conditions after sampling in the new international HJ836-2017 "Gravimetric Method for Determination of Low Concentration of Fixed Pollution Sources" of the Ministry of Environmental Protection. A high-precision balance is placed in a constant temperature and humidity environment and will be weighed The amount of the sample is placed in a constant temperature and humidity box to balance for 24 hours before being weighed. This product solves the influence of changes in laboratory environment temperature and humidity on the results of sample weighing, and greatly improves the accuracy of weighing samples. This product is also used for weighing samples with high requirements in other weighing environments.

Features:

1. The constant humidity control has high precision and meets the requirements of national standards HJ836-2017 and HJ656-2013.

2. The system stability process is high, and the filtration process is less than 30 minutes. The weighing test can be carried out at any time after it is stable, and there is no need to wait for the compressor to stop before weighing.

3. The human-machine interface adopts 4.3 touch screen, which is beautiful and durable. It can display the temperature and humidity values truthfully and can view the temperature and humidity fluctuation curve through the temperature and humidity curve, and view the temperature and humidity historical data through the table record.

4. The constant temperature and humidity cabinet adopts a reasonable circulating wind method, the wind is soft and the wind direction is reasonable, which not only ensures the uniform temperature and humidity in the cabinet, but also does not interfere with the weighing of the balance due to the strong wind.

5. Compressor unit and box body adopt integral transportation/separate operation structure, which is convenient for transportation and installation, and effectively avoids the impact of compressor vibration and weighing balance, and overcomes the problem of shockproof and silent operation.

6. The heating and cooling systems are completely independent.

7. Standard pure water circulating water supply method for humidification.

8. Air circulation system: temperature-resistant and low-noise air-conditioning motor, multi-blade axial fan.

9. There are two operation entrances on the box body, which are isolated with long latex gloves to avoid the influence of constant temperature and humidity conditions during manual operation.

10. The overall equipment over-temperature, overload, leakage protection, compressor over-pressure protection, low-pressure protection.

11. With different sample holders, different samples can be weighed.

12. Optional high-precision one-hundredthousandth electronic balance, with Chinese operating system, dual-range, fully automatic calibration.

13. Imported Embraco compressor unit is adopted, which has good cooling effect.

14. Humanized design: with casters, split type, easy to carry.

15. Use built-in humidifier.

16. Equipped with printer and USB interface, it is convenient to store data.

Application areas:

This system is suitable for the cultivation and preservation of molds, microorganisms, antibiotics, tissue cells; plant cultivation, breeding experiments, enzymology, enzyme engineering research; biological products, vaccines, blood and various specimen preservation and testing equipment.

Technical parameter: