| 摘要 |
The testing signal blocks (2,3) for measuring volume flow by correlation is based on the creation of testing signals by evaluating equipment (4). After shaping in the converter U/U, U/I (7) they are sent to the input of the signal blocks (2,3). At the same time as they are sent, the signals are sampled at the output of the signal blocks (2,3) by the evaluating equipment (4). The sampled signals are evaluated by the correlation method used during the real measurement. The frequency and the phase properties of the signal blocks are found after repeated tests according to the value of the correlation coefficient and the mutual shift of the evaluated signals.<IMAGE>
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