INTERFACE DETECTING DEVICE AND METHOD, AND VOLUME MEASURING INSTRUMENT AND METHOD

摘要

PROBLEM TO BE SOLVED: To detect an interface position of predetermined liquid as a sample contained in a container with high accuracy with a simple and general versatility-rich device constitution, accordingly measuring the volume of the predetermined liquid as the sample with high accuracy. SOLUTION: This interface detecting device is constituted to have a transmitting/receiving means 2 which transmits/receives microwave to/from a blood collecting tube 11 wherein the sample liquid 12 is accommodated and which converts the strength of the received microwave into heat quantity. Each of upper and lower interface positions of serum 14 as the predetermined liquid of the sample liquid 12 is measured using a temperature change measured by a receiving means 22, and the volume of the serum 14 is measured using values of each detected interface position. COPYRIGHT: (C)2007,JPO&INPIT