SF6, also known as (sulfur hexafluoride), is a colorless, odorless, non-toxic, non-flammable artificial inert gas. Due to its excellent insulation, arc extinguishing performance, and good chemical stability, it is widely used in high and low voltage electrical equipment.

However, SF6 gas leakage is harmful to the environment. The compounds produced by SF6 after discharge are highly toxic, and SF6 gas leakage can affect the safe operation of electrical equipment, posing a threat to the safe operation of the power system and the health of maintenance personnel. Therefore, it is very necessary to check the SF6 gas leakage status in electrical equipment.

To detect SF6 gas leaks, a leak detector is needed. So how should the leak detector be correctly operated and used?

Usage method:

1. Assembly: Take out the main unit of the leak detector and the test probe handle to connect them, then press the power button on the main unit panel to turn it on.

2. Power on: After powering on, wait for the instrument to preheat and return to zero. During the preheating process, place the "handheld probe" in air without sulfur hexafluoride gas. After 120 seconds, the instrument automatically clears the zero drift parameter and enters the test state.

3. Testing: During testing, the user only needs to carry the "main unit" of the instrument and bring the test port of the "handheld probe" close to the suspected leak point. If there is sulfur hexafluoride gas in the tested environment, the main unit display will promptly show the actual concentration of sulfur hexafluoride gas in parts per million by volume (PPmv). When the test value exceeds 10 PPmv, the buzzer starts a low-frequency audible alarm. The higher the test concentration, the higher the buzzer alarm frequency.

Precautions:

1. During the preheating process, place the test probe in air without sulfur hexafluoride gas.

2. Do not block the test port of the handheld probe for a long time.

3. It is strictly forbidden to send oil stains, liquid water, strong acids, and strong alkali gases into the instrument test port to avoid damaging the instrument.

4. It is strictly forbidden to knock the display screen with hard objects.

By following the above methods and precautions, I believe everyone will quickly master the use of the SF6 gas leak detector.