RESUMEN
Objective To develop an instrument for automatic testing of airtightness of the equipment and facilities in biosafety laboratory using pressure decay method with an aim at improving testing efficiency.Methods On the basis of the characteristics of the pressure decay method and the equipment performance in the biosafety laboratory,the PLC and touch screen and etc,industrial control instrument was employed for designing the structure and components.By programming PLC and touch screen the intended functions were achieved.Results This developed instrument could be used for automatic and multi-channel air tightness testing in parallel,as well as for monitoring and recording the pressure and temperature data of the equipment in real time.Conclusion By using the developed instrument,the testing cycle,and the manpower and material resources input can greatly be reduced.It is presumed that the instrument can be used for testing the airtightness of facilities and equipment in biosafety laboratory.
RESUMEN
Objective To develop an instrument for automatic testing of airtightness of the equipment and facilities in biosafety laboratory using pressure decay method with an aim at improving testing efficiency.Methods On the basis of the characteristics of the pressure decay method and the equipment performance in the biosafety laboratory,the PLC and touch screen and etc,industrial control instrument was employed for designing the structure and components.By programming PLC and touch screen the intended functions were achieved.Results This developed instrument could be used for automatic and multi-channel air tightness testing in parallel,as well as for monitoring and recording the pressure and temperature data of the equipment in real time.Conclusion By using the developed instrument,the testing cycle,and the manpower and material resources input can greatly be reduced.It is presumed that the instrument can be used for testing the airtightness of facilities and equipment in biosafety laboratory.
RESUMEN
To realize long-term long distance space exploring flight,the bioregenerative life support system has to be applied.Producing animal protein in this system could increase its closure ability and stability.In this paper,researches and developments on the animal protein production in the bioregenerative life support system from various countries including our research results were introduced in detail through information analyses.The prospects in the future studies were also predicted.It has important references for our country to carry out related investigations.