| 摘要 |
The system consists of three devices. The device A is placed at the mouth of the tank-barrel and fixes three terminals, two at the same depth, point 1 (picture 1) and the third one higher, point 2, (picture 1). As soon as the liquid reaches the first two terminals, the beeper and the Led of the device B (picture 1), function intermittently (warning signal). As soon as the liquid reaches the third terminal the beeper and the Led function continuously and provided that the device C has been connected to the filling pump, a wireless order for pause of function is given. Via the device B (picture 1) there is the possibility to control wirelessly the function of the filling pump, regardless of the terminals. <IMAGE>
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