What do you know about the components of a gas detector?
A gas detector mainly consists of the following parts: gas sensor unit, detection motherboard unit, power supply unit, alarm unit, sampling unit, human-computer interaction unit, and structural unit, etc. Each unit is an important component of a gas detection instrument. Understanding these components will greatly assist us in selecting gas detection instruments.
The sensor unit of gas detection instruments: mainly designed to determine the type of sensor used in the instrument, such as catalytic combustion principle, electrochemical principle, infrared principle, semiconductor principle, or photoionization principle. The sensor principles used for different gases are different, resulting in varying levels of accuracy and performance. In the following chapters, we will discuss in detail the differences in detection principles of these gas sensors.
Gas detection instrument motherboard unit: This unit involves the stability of the instrument, whether it will be affected by interference, whether the electronic components are reliable, and whether the functions are complete. Many manufacturers' motherboard units can be visually seen to be rough and simple in terms of layout design. These types of motherboards are generally basic versions with a single craftsmanship design. The motherboard control center mainly plays a role in connecting with external units, transmitting instructions externally, and participating in data processing internally.
The power supply unit of gas detection equipment: Generally, we use high-capacity lithium batteries for longer use and higher safety.
Alarm unit: This unit is responsible for the alarm signal output function of the gas detector. The alarm signals mainly include: sound and light alarm, vibration alarm, alarm relay signal and other functions.
Gas detector sampling unit: mainly divided into diffusion and pump suction methods for gas sampling. Adopt different methods according to different applications. Generally, fixed gas detectors are mostly based on diffusion principle sampling.
Gas detector human-machine interaction unit: This mainly refers to the instrument display and functional menu aspects. At present, some use digital displays, some use LCD displays, some use symbols to express meanings, and some directly use Chinese or English sentences to identify functions.
The structural unit of gas detector: mainly from the perspective of external structure, internal structure, whether the shell material has texture and durability, and whether there is ergonomic design consideration. This is also our first sensory consideration for instruments
