Intelligent Microwave Digestion Instrument CNWB-6

Intelligent Microwave Digestion Instrument CNWB-6Technical Specifications:

Host parameters:

1.1 Power supply: 220-240 VAC 50/60Hz 15A; Microwave frequency: professional microwave source/2450MHz; Installation power of the whole machine: 2600W;

1.2 Microwave output power: 0~1600W, automatically continuously adjustable;

1.3 Microwave output characteristics: Microwave non pulse continuous automatic frequency conversion control, 0-100% automatic output;

1.4 Microwave cavity: 52L, all stainless steel cavity, corrosion-resistant, high temperature resistant (optional PTFE coating);

1.5 Self locking buffer explosion-proof furnace door, which can automatically release lateral pressure impact in advance in case of danger, ensuring the personal safety of operators and the integrity of the furnace door structure;

1.6 Exhaust and cooling system: The furnace chamber is equipped with a high-power exhaust system, and various reactions can be carried out continuously for a long time in a ventilated, safe, and easily observable environment; The furnace chamber ventilation adopts acid resistant and high air volume centrifugal fans, with an exhaust air volume of not less than 5m3/min; The furnace chamber has air cooling function, which continuously cools the reaction tank and displays temperature and pressure in real-time.

Control system parameters:

2.1 Control mode: touch screen design, 7-inch large screen display, remote direct reading of reaction process, real-time display of closed reaction tank temperature and pressure, and real-time display of temperature pressure curve;

2.2 Temperature control range: Room temperature -300 ℃; Temperature control accuracy: ± 0.5 ℃;

2.3 Temperature control system: adopting contact temperature control method, precise temperature control, using high-precision platinum resistance temperature sensors; Real time detection, control, and display of temperature and curve inside the microwave digestion reaction tank;

2.4 Pressure control system: adopting non-contact pressure control method, precise pressure control, real-time detection, control and display of pressure inside the microwave digestion reaction tank;

2.5 Rotary table design: 360 ° continuous rotation in the same direction, uniform microwave, ensuring the same microwave environment for each sample and consistency of experimental results.

Reaction tank parameters:

The outer tank is made of imported PEEK aerospace material, and the inner tank is made of polytetrafluoroethylene material; Inner tank reaction volume: 55ml (standard) and 100ml (optional).

1、 What are the application areas of microwave digestion equipment?

Microwave digestion has been widely used in fields such as food, textiles, plastics, geology, metallurgy, coal, biomedicine, petrochemicals, environmental monitoring, sewage treatment, battery manufacturing, cosmetics, etc.

2、 What are the advantages of microwave digestion?

Microwave digestion, as an efficient sample pretreatment method, can well meet the requirements of modern instrument analysis for sample pretreatment process. It has the advantages of fast heating speed, uniform heating, low reagent dosage, low blank, energy saving and high efficiency. Especially in the analysis and detection of volatile elements, it can effectively maintain sample integrity and has a high sample recovery rate.

3、 What are the temperature control methods for microwave digestion equipment? What are their characteristics?

The temperature control methods for microwave digestion in the market mainly include infrared temperature control, thermocouple temperature control, platinum resistance temperature control, fiber optic temperature control, and other temperature control methods. The working mode of infrared temperature control is to scan and monitor temperature infrared data at a certain distance. It is a non-contact temperature control, so its accuracy is poor and the temperature control precision is not high.

Thermocouple temperature control measures relative temperature by measuring the potential difference between the cold and hot ends. Due to the interference of antenna effects on the uniformity of microwave fields, it is prone to generating electrical sparks and causing safety accidents. And there is a self heating effect under microwave field, which means the actual temperature inside the tank cannot be measured.

Platinum resistance temperature control utilizes changes to affect the absolute conductivity of free electron beams inside platinum conductors. The technology tests thermodynamic temperature through impedance changes and outputs signal responses with high accuracy. But there will also be antenna effects, which can easily generate electric sparks and cause safety accidents.

Fiber optic temperature control adopts direct fiber optic temperature measurement method, which is not affected by microwave field and can provide high-precision measurement. It has timely information feedback, precise temperature control, and no safety hazards. It is currently the ideal microwave digestion temperature control method.

Intelligent Microwave Digestion Instrument CNWB-6

What are the things to pay attention to when choosing a microwave digestion instrument

1. Environmental friendliness, safety, and reliability of equipment: Microwave digestion technology is an environmentally friendly sample processing technique that can greatly reduce the use of reagents and has advantages such as safety and reliability. However, it is still important to choose brands and manufacturers that meet relevant national safety standards and have a good user reputation.
2. Laboratory requirements and equipment compatibility: Determine whether the laboratory has sufficient space to install and place microwave digestion equipment. Secondly, the microwave output spectra used by different brands of microwave digestion instruments are not the same. It is necessary to ensure that the instrument can meet the required microwave power in the experiment and avoid instrument specifications that do not match and cannot work properly.
3. Instrument function and configuration: Select the operating frequency, chamber capacity, safety protection device, reagents, etc. of the instrument according to actual needs. Generally speaking, configurations such as high frequency, large chamber, fully protective devices, and high-purity reagents can improve processing efficiency and ensure experimental safety.
4. Technical support and after-sales service: Choose a brand with comprehensive technical support and after-sales service, and be able to solve problems in a timely manner.
5. Cost effectiveness: Choose products with high cost-effectiveness based on budget and demand.