The Study Of Steam Sterilization Testing Device And Method

Steam sterilization technology is the world ’s most reliable technology, widelyused in medical fields. High temperature and pressure, sterilization effect is reliable,easy to grasp and control, so the classic method still occupy an important position，must be through a variety of methods to ensure sterilizing effect. At present smallsteam sterilizers performance requirements for implementation of Medical industrystandard" small steam sterilizer-automatic type"(YY0646-2008). Because thestandard increase the temperature and the load requirements, it is necessary to use aconsistent with the standards of new testing device. At present, main cable sensor isdirectly connected, through the specialized interface directly connected. Because thestandard have multiple way temperature measurement, often a sensor is damaged andmust be replaced the entire sensor module, the economy is troublesome. Therefore, itis necessary to develop a new method for measuring and detecting device.This paper study of using a wired or wireless mode of multi channel temperaturepressure measurement technology, select the Pt1000sensor and Keller Series35XHTpressure sensor, and the software algorithm for temperature and pressure errorcorrection processing, according to standard method for testing equipmentrequirements, study and validation work. The testing device has channel of multiple(8way temperature, single pressure), range:0℃～150℃,-100kPa～400kPa,adaptability to sterilization environment, high accuracy, easy change probe, datatransmission speed fast.The design is through a USB interface to read the data, and make errorcorrection processing, to report and curve of the derived forms, is convenient for thestatistics of and access to, and the realization of data real-time processing andanalyzing.