The constant temperature and humidity weighing system is designed to meet the requirements of the Ministry of Environmental ProtectiontreetopHJ836-2017、HJ618-2011 and HJ656-2013centreruleThe requirement is to place a high-precision balance in a constant temperature and humidity environment, and place the sample to be weighed in a constant temperature and humidity chamber to balance for 24 hours before weighing. This product solves the problem of the influence of temperature and humidity changes in the laboratory environment on the weighing results of samples, greatly improving the accuracy of weighing sample results. This product is also used for weighing other samples with high requirements for symmetrical environments.

HJ836-2017Fixed pollution source exhaust gasDetermination of low concentration particulate matter by gravimetric method》

HJ618-2011 "Determination of PM10 and PM2.5 in ambient air by weight method"

HJ656-2013 "Technical Specification for Manual Monitoring Method of Environmental Air Particulate Matter (PM2.5) by Weight Method"

Particle automatic constant temperature and humidity weighing system in stock in Guangzhou

1. High precision constant humidity control, meeting the requirements of national standards HJ836-2017 and HJ656-2013.

2. The system stability process is high, and the filtering process takes less than 30 minutes. After stabilization, weighing tests can be conducted at any time without waiting for the compressor to stop before weighing.

3. The human-machine interface adopts a touch screen that is beautiful and durable, displaying temperature and humidity values truthfully and allowing for viewing of temperature and humidity fluctuation curves through temperature and humidity curves. Historical temperature and humidity data can be recorded and viewed through tables.

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

5. The compressor unit and casing adopt an integrated transportation/separate operation structure, which is convenient for transportation and installation, and effectively avoids the influence of compressor vibration on the weighing balance, overcoming the problem of shock resistance and noise reduction.

6. The heating and cooling systems are completely independent.

7. Standard purified water circulation supply method for humidification.

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

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

10. Overall equipment overheating, overload, leakage protection, compressor overpressure protection, low voltage protection.

11. Different sample supports can be configured to weigh different samples.

12. Optional high-precision 1/100000 electronic balance, with Chinese operating system, dual range, fully automatic calibration.

Particle automatic constant temperature and humidity weighing system in stock in Guangzhou

1Temperature range：15℃～35℃

2Temperature fluctuation：±0.5℃

3temperature resolution：0.1℃

4Humidity range：30～70％RH

5Humidity resolution：0.1%R.H

6Humidity fluctuation：±3%R.H

7power supply：220V 50/60HZ

8Temperature control accuracy: ± 0.1 ℃

9display resolution：Time: 0.1min, Temperature: 0.1 ℃, Humidity: 0.1% RH

10Safety protection：

10.1Refrigeration system: compressor overpressure protection, compressor motor overheat protection, compressor motor overheat protection, compressor overcurrent protection

10.2 Constant temperature and humidity chamber: over temperature protection, water shortage protection, over temperature insulation, fan overheating protection

electricityDevices: leakage protection, overload protection, load short circuit protection.