An endless path calibration system (11) comprising a sensor cassette (13) having a flow-through passage and at least one sensor to be calibrated, a chamber coupled to the sensor cassette (13) to define an endless path and a sterile calibration liquid (16) in the endless path. A gas injection passage for injecting gas into the sterile calibration liquid (16) and a gas vent leading from the endless path to the exterior of the endless path. A check valve allows gas to escape from the endless path and substantially prevents gas and liquid from entering the endless path through the gas vent. <IMAGE>
申请公布号
DE69122291(T2)
申请公布日期
1997.04.30
申请号
DE1991622291T
申请日期
1991.04.22
申请人
MINNESOTA MINING AND MANUFACTURING CO., SAINT PAUL, MINN., US
发明人
MAXWELL, THOMAS P., C/O MINNESOTA MINING AND, ST. PAUL, MINNESOTA 55133-3427, US;HACKER, THOMAS G., C/O MINNESOTA MINING AND, ST. PAUL, MINNESOTA 55133-3427, US