| 摘要 |
A target pressure value is determined during the learning mode. Subsequent pressure values are then compared to the target value. For example, a first connection is tightened in a conventional manner, while its pressure is monitored during the learning mode. If the tightening process went well, the n an operator pushes a button that tells the monitor to remember how much pressure was used on the tongs to tighten the first connection. The pressure value of that first joint then becomes the target pressure value for any subsequent joints. As additional joints are tightened, the pressure applied to the tongs is monitored and compared to the first one to ensure that all the joints are as good as the first one within an allowable tolerance.
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