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Noxious gas detector

Noxious gas detector is an instrument that can detect the concentration of toxic and harmful gases in the air. It is widely used in petrochemical industry, metallurgy, electric power, environmental protection, fire protection, medical and other fields. It is of great significance for ensuring personnel safety and environmental quality. In order to give you a better understanding of this instrument, we will introduce it from three aspects.

FS03101 (3)
PID Benzene Sensor FS03101

Noxious gas detector working principle

First, let’s understand how the Noxious gas detector works. It mainly uses electrochemical principles to detect gas concentration, that is, it uses the oxidation-reduction reaction between electrodes to generate current. The size of the current is proportional to the concentration of the gas. This principle is suitable for detecting carbon monoxide, sulfur dioxide, chlorine, hydrogen sulfide and other gases. The electrochemical detector is composed of electrodes, electrolytes and external circuits. When harmful and toxic gases in the air enter the gap between the electrodes, an oxidation-reduction reaction will occur, generating current. The current can be converted into a digital signal through the external circuit and displayed. on the monitor.

FS02001 (3)
Electrochemical Sulfur Dioxide Gas Sensor FS02001

Noxious gas detector performance indicators

Next, we will discuss the performance indicators of Noxious gas detector, which are an important basis for evaluating the quality of the instrument. Performance indicators mainly include: range, accuracy, sensitivity, response time, stability and anti-interference, etc.

The measuring range refers to the maximum and minimum gas concentration range that the detector can detect, expressed in percentage or milligrams per cubic meter.

Accuracy refers to the error between the value displayed by the detector and the actual value, expressed in percentage or milligrams per cubic meter.

Sensitivity refers to the detector’s ability to respond to small changes in gas concentration, expressed as a percentage or milligrams per cubic meter.

Response time refers to the time it takes for the detector to receive a signal and display a value, expressed in seconds or milliseconds.

Stability refers to whether the detector can maintain good performance after long-term use, expressed in percentage or milligrams per cubic meter.

Anti-interference refers to whether the detector can resist the influence of external factors such as temperature, humidity, pressure, electromagnetic field, etc., expressed in percentage or milligrams per cubic meter.

FS02501 (3)
Electrochemical H2 Hydrogen Gas Sensor FS02501

Precautions when using Noxious gas detector

When using Noxious gas detector, we also need to pay attention to some things to avoid unnecessary trouble and danger. When using Noxious gas detector, you should pay attention to the following points:

  1. Install and use the detector correctly and operate according to the instructions to avoid misoperation or damage to the instrument;
  2. Regularly inspect and maintain the detector, calibrate, clean and replace parts according to regulations to ensure the accuracy and reliability of the instrument;
  3. Comply with safety regulations and take corresponding protective measures based on test results to avoid accidents such as poisoning or explosion. For example, if the concentration of carbon monoxide in the air is detected to exceed 50 ppm (parts per million), you should evacuate the scene immediately and wear a gas mask or respirator.

It is worth mentioning that since the working principle of the electrochemical detector is to use the redox reaction between electrodes to generate current, it is sensitive to external factors such as temperature, humidity, and pressure, so care should be taken to avoid these factors when using it. Influence.

Through the above analysis, we can see that the Noxious gas detector is a very useful device that can effectively monitor toxic gases in the air and provide protection for personnel and the environment. When using this instrument, attention should be paid to correct installation and use, regular inspection and maintenance, and compliance with safety regulations to ensure the normal operation of the instrument and the safety and health of personnel.

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