Ningbo Jiangnan Instrument Factory supports the implementation of the new environmental standard "Determination of Low-Concentration Particulate Matter in Stationary Source Exhaust Gas by Gravimetric Method" (HJ836-2017).

Reading Guide

Recently, the Ministry of Environmental Protection of the People's Republic of China released a new standard for the determination of low-concentration particulate matter in stationary source emissions: "Stationary Source Emissions - Determination of Low-Concentration Particulate Matter - Gravimetric Method" (HJ836-2017). This new standard will officially take effect on March 1, 2018. At the same time, the Ministry of Environmental Protection has revised the "Determination of Particulate Matter and Sampling Methods for Gaseous Pollutants from Stationary Sources" (GB/T16157-1996), which will also be implemented alongside HJ836-2017. The release of this new standard is sure to capture the attention of countless environmental monitoring professionals.

Product Introduction for Low-Concentration Weighing Constant Temperature and Humidity Weighing Equipment

The NVN-900 model is a brand-new version released in May 2018, with a shock resistance rating of 4.5. It can be optionally equipped with a printer and storage software, as well as a touchscreen and an upgraded automatic weighing function.

The low-concentration constant temperature and humidity weighing equipment places a high-precision electronic balance inside a constant temperature and humidity chamber. The samples to be weighed are manually measured after being equilibrated in the equilibrium zone of the chamber for 24 hours. This product eliminates the impact of fluctuations in laboratory temperature and humidity on sample weighing results, thereby improving the accuracy of the weighing outcomes.

Product Features of Low-Concentration Weighing Constant Temperature and Humidity Weighing Equipment

① The balance operates within a high-precision constant temperature and humidity chamber, where the sample is equilibrated, ensuring the accuracy of the weighing results.

② Different sample holders can be placed according to the type of sample being weighed.

③ The constant temperature and humidity equipment adopts an air supply and return circulation method, with air supplied from the top and exhausted from the bottom, ensuring uniform temperature and humidity inside the chamber.

④ There are two manual operation entrances on the chamber, ensuring that the temperature and humidity inside the constant temperature and humidity chamber remain unaffected during manual operation.

⑤ Balance workbench (optional) features multi-level vibration damping to ensure continuous and stable operation of the balance.

⑥ Two water supply methods can be used: direct tap water supply and purified water circulation supply.

⑦ The product is scalable, and if needed, it can be upgraded to a 60-position constant temperature and humidity automatic weighing system by paying the price difference at a later stage.

The main functions of the low-concentration weighing constant temperature and humidity weighing equipment are as follows:

①The touchscreen can monitor the temperature and humidity inside the box in real time, and allows viewing of historical data and curves.

② Refrigeration system: compressor overpressure protection, compressor motor overheat protection, compressor overcurrent protection.

③ Constant temperature and humidity chamber: over-temperature protection, water shortage protection, extreme over-temperature protection for air conditioning channels, and overheating protection for circulating fans.

④ Leakage protection, overload protection, and load short-circuit protection.

⑤ The compressor unit and the main unit are designed separately to reduce the impact of compressor unit vibration.

⑥ Material: Aluminum alloy profile to prevent rust.

Technical Parameters of Low-Concentration Weighing Constant Temperature and Humidity Weighing Equipment

Product dimensions: 1320*800*1580mm

1. Invented a new type of silent and shockproof grade 4.5

2.1 Temperature Control: 15–30°C (Accuracy deviation ≤ 0.1°C)

2.2 After balancing, the fluctuation ≤ ±0.8°C; accuracy 0.1°C.

3.1 Humidity Control Range: 30%～70% RH

3.2 After balancing, fluctuation ≤ ±3.5% RH; accuracy 1.0%.

4. Split-source isolation; variable-frequency flexible connection

5. Low-heat, ultra-quiet micro-convection circulation fan

6. Power supply: 220V; 50Hz

7. Working Mode: Timed/Continuous Operation

8. Standard mechanical lock

9. Net weight: 240kg

10. Manually remove static electricity.

Standard Configuration List:

1. Weighing room: stainless steel + nano zero-radiation marble countertop

2. Lighting system at the top of the weighing room

3. Leakage protection circuit breaker switch

4. Fixed rubber gloves/rubber sleeves + constant temperature soundproof damping cover

5. Leveling and shock-absorbing casters

6. Ultrasonic Humidification System

7. Concealed Refrigeration Unit

8. Button-type LCD controller

9. Intelligent Temperature and Humidity Air Duct Structure

10. Static Elimination System Device

11. Air Convection Optimization System

12. Standard 24-hole sample rack

13. Test hole

14. Level

15. Choose either side to connect the humidifier power supply.

Optional/Additional Equipment List

1. Custom External Refrigeration Unit

2. Real-time micro printing + USB storage function

3. Optional 5-inch LCD touch screen

4. Left and right side power supply and humidification

5. Anti-pollution Air Purification System

6. Measurement Certificate for Weighing Equipment

7. Optional: One hundred-thousandth balance (0.01mg)

8. Balance Calibration Certificate

9. Ultraviolet Disinfection

10. External (Outdoor) Unit

11. Anti-vibration table

12. Shockproof Pad