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

Introduction

Recently, the Ministry of Environmental Protection of China released a new standard for measuring low concentrations of fixed pollution source exhaust gas: "Determination of Low Concentration Particulate Matter in Fixed Pollution Source Exhaust Gas by Weight Method" (HJ836-2017). The new standard will be officially implemented on March 1, 2018. At the same time, the Ministry of Environmental Protection of China has revised the "Determination of Particulate Matter and Sampling Methods for Gaseous Pollutants in Fixed Pollution Sources" (GB/T16157-1996), which will also be implemented together with HJ836-2017. The release of this new standard is bound to touch the hearts of millions of environmental testing personnel.

Low concentration constant temperature and humidity weighing equipmentintroduce

The ordinary constant temperature and humidity equipment on the market can no longer meet the requirements of national standards. Ningbo Jiangnan Instrument Factory has developed a low concentration weighing constant temperature and humidity equipment that meets the requirements of the new standards. Breaking the monopoly of foreign equipment in this area, making product prices more in line with market demand and easier to promote new standards.

product overview

Low concentration weighing constant temperature and humidity equipment is a high-precision electronic balance placed in a constant temperature and humidity chamber. The sample to be weighed is manually weighed after 24 hours of balancing in the equilibrium zone of the constant temperature and humidity chamber. This product solves the problem of the influence of temperature and humidity changes in laboratory environment on sample weighing results, greatly improving the accuracy of weighing results.

Characteristics and parameters of low concentration constant temperature and humidity weighing equipment

(1) The balance works inside a high-precision constant temperature and humidity box, and the weighed sample is balanced inside the high-precision constant temperature and humidity box, ensuring the accuracy of the sample weighing results.

(2) Different sample holders can be placed for weighing different types of samples.

(3) The constant temperature and humidity box adopts an upward air supply and downward suction circulation method to ensure uniform temperature and humidity inside the box.

(4) There are two manual entry points on the box, which can ensure that the temperature and humidity inside the box are not affected during manual operation.

(5) The balance workbench has multi-level shock-absorbing treatment to ensure the continuous and stable operation of the balance.

(6) There are two water supply methods available: direct tap water supply and purified water circulation supply.

(7) The product has scalability and can be upgraded to a 60 bit constant temperature and humidity automatic weighing system if needed.

(8)Temperature and humidity indicators: Temperature: 15-30 ℃ can be set at any point, with fluctuations ≤ 0.5 ℃,
Humidity: 50% RH fluctuation less than or equal to 2.5%

(9)Balance (user provided)

Configure a 1/100000 scale with a range of ≥ 40g
Resolution 0.01mg
Linear ≤± 0.06mg??
Repeatability ≤± 0.02mg
Support both internal and external schools

(10) The touch screen can monitor the temperature and humidity inside the box in real time, and view historical data and curves.

(11) Power supply 220V, 50HZ

(12) Power: 1.5KW

(13) Refrigeration system: compressor overpressure protection, compressor motor overheat protection, compressor overcurrent protection.

(14) Constant temperature and humidity chamber: over temperature protection, water shortage protection, air conditioning channel extreme over temperature protection, circulating fan overheating protection.

(15) Other: leakage protection, overload protection, load short circuit protection.

(16) The compressor unit and the main engine are designed separately to reduce the impact of compressor unit vibration.

(17) Aluminum alloy profiles are used to prevent rusting.

(18) Workstation: Manually encoded, providing data query and export services. Automatic scanning and sample recognition function can be added in the later stage.

(19) Standard configuration: 1 host, 1 compressor, and 1 set of computer workstation.