| 摘要 |
PURPOSE: A tester of an underground water hole is provided to prevent pollution of underground water by adopting a compass, a motor and an image transfer device for informing a worker of an underground water vein and a polluted position. CONSTITUTION: A power cable connected with a tester is coupled with a connector of a control box. An image line coupled with a vertical camera(122) is connected with a second connector of a monitor. Then an image line of a horizontal camera(453) is connected with a third connector of the monitor. Each main switch of the monitor and the control box is turned on and a recording button of a VTR(Video Tape Recorder) switch is pushed. The tester is put into an underground water hole by a rope, and a light switch is turned on. The brightness of a light is adjusted by a brightness adjustor. A light switch of a stop camera(322) is turned on and adjusted in brightness by a light brightness adjustor. A compass is mounted at the same direction toward the underground water hole. A light switch of a rotatable camera is turned on and adjusted in brightness. The tester is put into the underground water hole 1 meter per 1min. The underground water hole is tested primarily by the vertical camera and secondarily by the horizontal camera.
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