EXPEC 4820 metals analyzer is a new generation spectrometer developed by EXPEC Technology based on the company 's full spectrum emission spectroscopy technology and high-end argon self- purification technology. The instrument was released and launched in 2016 by applying the company's full spectrum spectrometer M4000 instrument platform , and has experienced many years of market testing for stability and reliability. The new EXPEC 4820 spectrometer uses a scientific research grade CMOS sensor as the detectors and patented argon self-purification technology , which has excellent performance and can meet the analysis needs from mid to high-end users.

Patented Argon Self-Purification Technology(ZL201620005367.7)

The argon self-purification technology uses a pump to extract the argon in the optical chamber , purifies it with an argon purifier and then returns it into the optical chamber , thereby maintaining a high purity argon environment in the optical chamber.

• The optical chamber adopts an integrated casting optical chamber with excellent sealing performance , which can maintain long-term purity of internal argon and ensure the service life of the purifier.
• The ultraviolet analysis environment is equivalent to a vacuum chamber of 10-3Pa , improving the analysis performance of short - wave elements.
• The pressure difference inside and outside the optical chamber is almost zero , and the optical chamber is sealed with constant temperature and pressure , effectively avoiding the drift of the optical system caused by environmental and atmospheric pressure changes, improving the long-term stability of the product.
• Reduce the argon consumption of the argon filling system and effectively reduce the use cost.