Application of photoelectric liquid level sensor in pathological equipment industry
Paraffin embedding machine is a kind of equipment which embeds the tissue wax blocks of human body or animal and plant specimens after dehydration and wax immersion for histological diagnosis or research after slicing. It is suitable for medical colleges, hospital pathology department, medical research institutions, animal and plant research units and food testing departments.
Multifunctional embedding machine
Before embedding pathological tissue, some procedures such as fixation, washing, dehydration, transparency and wax penetration will be carried out. Many kinds of solvents will be used in these operations, including formalin, alcohol, xylene, paraffin, etc. due to the volatile organic matter composition of formalin and xylene, the odor is very pungent and has great potential harm to human body. Therefore, two to three liquid level switches can be used in the process of tissue fixation and transparency, so as to realize automatic detection and injection of hazardous solvents, prevent solvent overflow, and realize automatic control. The implementation of the automatic detection can avoid the staff from being poisoned by harmful substances too frequently.
1. Pathological tissue fixation process
Shenzhen metri technology launches photoelectric liquid level sensor (see figure below) Its material has the characteristics of high temperature resistance and corrosion resistance, which makes it extremely excellent compatibility in formalin solution for pathological tissue fixation. The sensor can work at high temperature, with long service life, sensitive detection and high reliability. At present, this scheme is adopted in the automatic infusion of advanced pathological equipment in tissue fixation at home and abroad 。 Some domestic customers use ultrasonic testing scheme, but the reliability and sensitivity are poor.
2. Transparent process of pathological tissue
Because the xylene liquid used in the transparent process after the dehydration of pathological tissue of photoelectric liquid level sensor is not very compatible, because of the corrosion and solubility of xylene, its surface becomes soft, so the detection of xylene liquid needs a more solid stainless steel package, and the top tip is crystal glass POS series sensor to detect. At present, the excellent cost performance of the sensor makes it widely used and praised in the research and development of pathological equipment and production industry.
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