发明名称 |
METHOD AND APPARATUS FOR CALIBRATING A FLOW METER |
摘要 |
<p>In the method for calibrating a flow meter, at least two acoustic sensors (7, 8) are arranged at a distance to each other on a straight measuring portion (5), and a tracer (6) is fed into the fluid flowing in the process pipe (4) at a set mixing distance (3) from the first measuring point (7). The momentary reference value of the flow velocity of the flowing fluid is measured by determining the travel time of the acoustic tracer (6) between at least two sensors (7, 8) on the same straight measuring portion (5), by using the acoustic sensors (7, 8) to detect the relative content response of the tracer (6). This measured value can be compared with the value displayed by the flow meter (4). The mixing distance (3) of the tracer is arranged to be at least long enough for the tracer (6) to have effectively mixed at the first measuring point (7) over the entire cross-section of the flow path of the fluid.</p> |
申请公布号 |
WO2012028772(A1) |
申请公布日期 |
2012.03.08 |
申请号 |
WO2011FI50735 |
申请日期 |
2011.08.23 |
申请人 |
OY INDMEAS AB;LAUKKANEN, VILLE;KUOPPAMAEKI, RISTO |
发明人 |
LAUKKANEN, VILLE;KUOPPAMAEKI, RISTO |
分类号 |
G01F25/00;G01F1/66;G01F1/708 |
主分类号 |
G01F25/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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