Gas detector is mainly used in petroleum, chemical, metallurgy, electric power, steel and other industries. Occasionally, gas leakage events will occur, which not only affect the normal production and operation of enterprises, but also endanger the personal safety of on-site workers. Therefore, it is necessary to use gas detector for real-time detection of gas concentration value. When customers are faced with many kinds of gas detectors, how to choose the products that meet their needs?
Choose the gas detector to grasp these four points.
First, clear detection requirements
When the customer consults the detector manufacturer, the manufacturer’s pre-sales staff will record the customer’s needs in detail. The customer needs to determine the type of gas to be tested, in what kind of working environment to be tested, whether it needs a stationary gas detectors or a portable gas detectors, and what additional functions are needed? First of all, according to different working conditions, the type of gas detectors selected is also different.
Fixed gas detectors: used in the industrial production process, the so-called fixed is fixed in the specific detection point position, the specific gas leakage detection, suitable for continuous and stable detection requirements.
Portable gas detectors: small size, easy to carry, simple operation. Apply to sites that need inspection. The portable gas detectors produced by Jingxing can realize the free gas combination and the detection of four gases at the same time to meet the needs of most gas detection.
Two, understand the working environment
Each detector has certain requirements on temperature, humidity and pressure. Generally speaking, the temperature is -20~60℃, the humidity is 0-95%RH, and the pressure is 80-120Kpa. In addition, dust, flow rate, etc., will also have an impact on the test results. Therefore, when choosing the right gas detector, it is necessary to have a clear description of the working environment under test, so that the manufacturer can provide the corresponding solution according to these parameter data. Ai Technology has a perfect solution in gas detection, customized gas detection equipment to meet the needs of different working conditions.
Third, understand the security situation
This is mainly aimed at whether the detector needs explosion-proof certification. Generally speaking, the coal, petroleum and other industries have strict explosion-proof requirements, which require the explosion-proof instrument itself but also with explosion-proof certification. We know that explosive gas dangerous places are divided into: zone 0, zone 1 and zone 2 according to their danger degree.
- Explosive area range of zone 0: generally exists in coal mining face or sealed container, and the existence time of explosive dangerous gas is more than 1000h/ year;
- Explosive area scope of Zone 1: non-mining surface of coal mine, closed area of petroleum and petrochemical (with air vents), existence time of explosive dangerous gas of 10h/ year -1000h/ year;
- Explosive area of Zone 2: Petroleum and petrochemical non-closed area, basically no dangerous gas (open air), the existence time of explosive dangerous gas is less than 10h/ year.
Fourth, understand the functional requirements
In addition to the basic requirements, detection of gas concentration, alarm beyond the preset alarm value, some users have other functional requirements, such as: with signal output, digital signal output, switching quantity output, etc. There are even some unusual requirements, such as network interfaces and wireless signals. These are the specific functional requirements that need to be fully considered in the selection of gas detectors.