The shape of the leak detector is shown in Figure 9-6. When in use, the operating point of the instrument should be adjusted first, that is, after the power supply is turned on, a long-period sound of "beep, beep" will be emitted, and the indicator light flashes synchronously with the sound, indicating that the operating point of the leak detector has been adjusted. Then slowly move the sensor probe along the system pipeline. When approaching a certain position, the alarm sound of the leak detector will be accelerated. When the indicator light changes from flashing to long light, it means there is a leak here.
Figure 9-6 Electronic Leak Detector
Electronic leak detector has the characteristics of convenient use and high sensitivity. However, because the leak detection is realized by the contact between the probe and Freon, it is difficult to determine the leak point in a room with fast air flow or a closed room.