The gas detector is mainly composed of the sensor and the motherboard circuit of the device itself. We divide it into two main parts, the first part is the sensor part, and the second part is the detector body part.

First, let's look at the sensor of the gas detector. The sensor has a fixed life, and the life of the sensor with different principles is also different.For example, the normal design life of the sensor based on the electrochemical principle must be replaced after it expires within 2 years. The general number of uses of the replacement time has nothing to do with the storage time. Because the electrochemical sensor is inside the electrolyte, it will naturally be during the placement of the sensor. Decrease, so it will be consumed even if it is not used, so there is basically a fixed replacement cycle, but it must be replaced after expiration, therefore, it is recommended that users do not prepare sensor parts in advance when using the checker

The second part is the circuit board part of the gas detector. Generally, the design is reliable, and the circuit with sufficient materials can basically guarantee the body life of 3 to 5 years. Some portable gas detectors have suction pumps and batteries, and such accessories can generally be used for about 2 years.

In summary, there is no problem with the circuit board normally used by the gas detector. In most cases, due to sensor failure, the life of the gas detector is equal to the life of the sensor. The life of the electrochemical sensor is about 2 years. After 2 years, the mechanical properties are checked to determine whether it is necessary to replace the sensor.

Gas detection requires accurate detection when replacing the sensor.

At present, many gas detectors can replace the detection sensor, but this does not mean that the detector can replace the sensor at any time. Whenever a sensor is replaced, the device must be calibrated in addition to the necessary aging of the sensor.The calibration requires the use of the appropriate standard gas.

Generally speaking, each sensor corresponds to a specific detection gas, but any gas detector is not an absolute effect. Therefore, when selecting a gas sensor, it is necessary to try to understand the detection interference of other gases on the sensor to ensure the correct detection of a specific gas.

What are the types of portable gas detectors?

Portable gas detectors are mainly divided into two types: diffusion type and pump suction type. The so-called portable, as the name suggests, is designed for portability, is mobile, and the application is flexible. When choosing, we consider the kind of portable meter suitable for his application field.

The functions that the portable gas detector should have:

1. The direct-reading digital screen can quickly display the current gas concentration.

2, there is a record storage, you can set the sampling interval time, according to the need to automatically record the current concentration data.

3, with gas exceeding sound and light, vibration prompt.

4. With rechargeable lithium batteries or replaceable batteries, it can ensure the power reserve for more than several hours of continuous use.

5. The weight and volume of the equipment, many portable gas detectors are small in size.