| 摘要 |
Apparatus for determining parameters in a fluid, and especially blood, has a measurement chamber system to hold a disposable cassette (9) with at least one measurement chamber (15) for the fluid to be passed through. At least one ultrasonic measurement unit (7,13) measures a value dependent on the extension of the measurement chamber in a measurement direction. Apparatus for determining parameters in a fluid, and especially blood, has a measurement chamber system to hold a disposable cassette (9) with at least one measurement chamber (15) for the fluid to be passed through. At least one ultrasonic measurement unit (7,13) measures a value dependent on the extension of the measurement chamber in a measurement direction. With a known measurement chamber extension, the register of the parameter or one of them is in a fixed relation to a standing value. A proximity sensor (24) is arranged at the measurement chamber, so that the measurement gap changes in relation to the extension (25) of the measurement chamber. |
