Аналіз з добовий відмова фактори з шум метр
Ми всі знаємо що вібрація воля продукція шум, так as: обертання машини, impact, резонанс, тертя, etc., as well as noise generated by flow field, environmental noise, generated by combustion, and other noises. The generation of noise has an impact on our life and work. If you want to know the size of the noise, you need a noise measuring instrument.
Шум метр, також known as (шум meter, звук рівень метр) is the basic instrument in noise measurement. A звук рівень метр is generally composed of a condenser microphone, a preamplifier, an attenuator, an amplifier, a frequency meter network, and an effective value indicating meter. The working principle of the sound level meter is: the microphone converts the sound into an electrical signal, and then the preamplifier transforms the impeddance to match the microphone with the attenuator. The amplifier adds the output signal to the network, performs frequency weighting on the signal (or an external filter), and then amplifies the signal to a certain amplitude thruly through the attenuator and the amplifier, and sends it to RMS детектор.
The шум метр is mainly used to measure environmental noise, do noise engineering, quality control and health prevention and control. For example, it is used for noise measurement in various occasions such as factories, offices, traffic roads, audio systems, homes, air conditioners, холодильники, etc. Then, Zhuhai Tianchuang Instrument Co., Ltd. summarizes some daily fault analysis and solutions for noise meters:
1. Є є ні дисплей увімкнено дисплей
(1) внутрішня батарея підключення є відключена або батарея контакт є не добре: припоял з'єднання і заміна батарея контакт штука.
(2) The battery is damaged: replace the battery.
2. The measurement reading is obviously low or the calibration is less than 94.0dB.
(1) Мікрофон чутливість є занадто низький або пошкоджений: заміна мікрофон і перекалібрування.
(2) The contacts of the preamplifier are not in good contact with the microphone: clean the contacts.
(3) The plug of the preamplifier is not in good contact with the host socket: replace the plug socket.
3. The reading is too high during low sound level measurement, and the the ground wire of the preamplifier is not in good contact: tighten the outer sleeve.
