Gas detector and analyzer principle and difference - Database & Sql Blog Articles

The gas detector is an instrumentation tool for gas leakage concentration detection, which is mainly portable/handheld, and relatively simple. Commonly used sensor principles are catalytic combustion, electrochemistry, PID photoionization, and semiconductor technology.

A gas analyzer is a process analysis instrument that measures the composition of a gas. In many production processes, especially in the presence of chemical reactions, automatic control based solely on physical parameters such as temperature, pressure, flow, etc. is often insufficient.

For example, in the production of synthetic ammonia, only controlling the temperature, pressure, and flow rate of the synthesis tower does not guarantee the highest synthesis rate. The chemical composition of the intake gas must be analyzed simultaneously, and the optimal ratio of hydrogen and nitrogen must be controlled to obtain higher productivity. In addition, in the combustion control of the boiler, in addition to controlling the ratio of fuel to combustion air, the chemical composition of the flue must be analyzed online, thereby changing the supply of combustion air to achieve the highest thermal efficiency of the furnace.

In addition, in factories that emit harmful gases, gas must also be used.

Detector

Continuous monitoring of harmful gases to prevent serious accidents such as jeopardizing workers' health or polluting the environment or causing explosions. Due to the wide variety of gases being analyzed and the variety of analytical principles, there are many types of gas analyzers. Commonly used thermal conductivity gas

Detector

Electrochemical gas

Detection

Instrument and infrared absorption

Detection

Instrument and so on.