Instrument Introduction

The "Microwave Sample Processing System" developed and produced by Meicheng Science and Technology Instrument is a "15th Five Year Plan" scientific and technological research project of the Ministry of Science and Technology of China. On the basis of absorbing * technology, the product adopts frequency conversion technology and large cavity microwave design, especially innovative in explosion-proof safety technology（Declared）Among them, MeichengMPThe microwave sample processing platform integrates digestion, extraction, and synthesis functions, and its various indicators are close to the level of similar products.

Instrument characteristics

Structural characteristics

1）Furnace cavity sprayed with materials produced by DuPont in the United StatesPFA(Perfluoroalkoxy ethylene), resistant to industrial strong acids and high temperatures
2）There is a wavelength reducer installed outside the furnace cavity to ensure that microwave leakage is far below the national standard
3）The furnace chamber is equipped with an exhaust fan and an external smoke exhaust pipe, with a wind speed of:3m³/minEnsure that20Reaching the opening temperature within minutes
4）There is a sample tank rack in the furnace cavity, which is controlled by a light controlled reversible motor,360The reciprocating rotation ensures that the sample tank receives microwave energy more evenly, ensuring that the temperature of each sample tank is consistent*
5）The lower part of the microwave oven is equipped with a pressure sensor and a temperature measurement and control circuit system
6）Can achieve continuous adjustment of output power and stable microwave output

Technical performance characteristics

1）By using a microwave sample preparation system, the sample preparation time has been shortened90％

2）Reversible360Rotate the turntable to ensure that all samples receive microwave energy uniformly during each operation 3）Equipped with a safety lock and pressure sensor safety protection device to ensure safety

4）High pressure sealed water pipe detection system pressure, feedback control, overpressure alarm

5）Using built-inPt100Platinum resistance for precise temperature control, real-time monitoring up to300℃Temperature control accuracy: ±0.5℃Stable performance and durability

6）Adopting direct contact pressure measurement method, the pressure reflects truthfully and accurately, and real-time monitoring is achieved900psiControl accuracy:0.01MPa

7）Same batch, most processed simultaneously10A sample

8）The protective pressure of the safety diaphragm is medium pressure200psi, high voltage400psi

9）ByPIDControlling the microwave frequency to adjust different output powers, improving the efficiency of the power supply, reducing standby power consumption, and saving electricity compared to traditional microwave digestion20%above. In addition, the introduction of frequency conversion technology has also reduced the working noise of instruments

security guarantee Six measures

Three proactive measures to ensure that dangerous situations do not occur
A safe and reliable control system with slope control function to prevent voltage rise or temperature overshoot
● Truly achieved dual control of temperature and pressure in the same tank, with small differences, safe and reliable
If the pressure inside the tank exceeds the set protection value, the microwave heating will automatically stop

Three passive measures to ensure personal safety and minimize financial losses in the situation
Install a safety explosion-proof film on the sample tank, which will rupture first in case of overpressure, relieve pressure and prevent explosion, and also prevent damage to the sample tank
Self locking safety explosion-proof door with special sliding structure（Approved application）
The control part and digestion furnace body are designed in a separate manner with rigorous and reliable operating procedures to ensure that personal injury is not caused under certain circumstances

Instrument technical parameters

MeichengMPTechnical parameters of microwave digestion processing platform

Configuration List:

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