| 摘要 |
A fluid testing system is envisaged which comprises a source that generates electromagnetic waves, a detector that receives the transmitted electromagnetic waves and generates analog signals corresponding to the colours represented in the electromagnetic waves and, a receptacle, having transparent walls and a fluid inlet. The receptacle is positioned to be between the source and the detector to enable the electromagnetic waves to pass through its walls and through a fluid sample present in the receptacle. The system comprises a repository that stores a pre-determined range of reference values corresponding to the values in the digital signals for fluids of various colours. An analog to digital converter present in the system cooperates with the detector to receive the analog signals and convert them into digital signals, the values of which are then compared with the reference values by a comparator to determine the colour values of the fluid sample and hence adulteration level of the fluid. |
