Low concentration constant temperature and humidity weighing system with stable temperature and humidity control accuracy, directly supplied by the manufacturer

Description :

　　LB-350Nlow concentrationConstant temperature and humidity weighingsystem

Product Overview:

　　The LB-350N low concentration weighing constant temperature and humidity equipment is designed to meet the requirements of the new national standard HJ836-2017 "Determination of Low Concentration of Fixed Pollution Sources by Weight Method" of the Ministry of Environmental Protection regarding the weighing conditions after sampling. A high-precision balance is placed in a constant temperature and humidity environment, and the sample to be weighed is placed in a constant temperature and humidity chamber for 24 hours to balance 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.

Key Features:

　　1. The temperature and humidity control accuracy is high, meeting the requirements of national standards HJ836-2017 and HJ656-2013. The temperature fluctuation is ± 0.2 ℃, and the humidity fluctuation is better than ± 2.0% RH. The instrument uses a Swiss 2. rotonic temperature and humidity transmitter, with a temperature deviation of ± 0.4 ℃ and a humidity deviation of ± 1.5% RH.

　　3. The system stability process is short, 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 shut down like some products before weighing.

　　4. The human-machine interface adopts a 4-inch color touch screen, which is beautiful and durable, displaying temperature and humidity values truthfully. The temperature and humidity fluctuation curves can be viewed separately through the temperature and humidity curves, and historical data of temperature and humidity can be viewed through table records.

　　5. 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. Temperature uniformity ± 0.4 ℃ (i.e. 0.8 ℃), humidity uniformity ± 1.5% RH (i.e. 3.0% RH).

　　6. 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. This instrument saves 1/3 of the floor space compared to the proportional type.

　　7. The compressor adopts intermittent cooling mode, which saves 85% electricity compared to continuous cooling.

　　8. The heating and cooling systems are completely independent. Standard purified water circulation water supply method for humidification.

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

　　10. 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.

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

　　12. In case of sudden situations such as leakage, sound and light alarms, automatic shutdown after alarm, and other protections.

　　13. Different sample holders can be configured to weigh different samples.

　　14. Optional imported high-precision 1/100000 electronic balance, color touch screen, Chinese operating system, dual range, fully automatic calibration.

Technical Indicators:

AfterSalesService :

• Low concentration constant temperature and humidity scale