The chlorine dioxide gas detector uses optical characteristics such as ultraviolet absorption and fluorescence intensity for measurement. Its advantage lies in its strong anti-interference ability, but it also has the problem of high equipment cost, which is mostly used in laboratories or high-precision industrial scenarios. When chlorine dioxide gas enters the sensor, it undergoes an oxidation-reduction reaction with the electrode surface, generating a current signal. The current intensity is directly proportional to the gas concentration. Through a precise signal amplification and processing system, these current signals are converted into intuitive concentration values and displayed on the screen of the detector. This method has fast response speed and high accuracy, and is widely used in portable and fixed detection equipment.

The concentration of chlorine dioxide is determined by measuring the absorption or emission intensity of light, using the color change produced by chlorine dioxide itself or by reacting with specific reagents. Specifically, it is to measure the absorbance or transmittance of the sample at a specific wavelength, in order to calculate the concentration of chlorine dioxide. This method is suitable for scenarios that require high-precision analysis, but the equipment cost is relatively high.

The chlorine dioxide gas detector is an important tool for monitoring the concentration of chlorine dioxide in the environment, and its measurement steps are as follows:

1. Power on preheating: Turn on the power switch and wait for the instrument to complete the initialization and preheating process. At this stage, ensure the stability of the sensor and avoid errors caused by temperature fluctuations.

2. Zero calibration (blank calibration): Place the cleaned colorimetric bottle into a dedicated slot and lock it. Press the "on/off" button to start the device; When the LCD screen displays a specific identifier, press the "zero" button to reset the reading to zero and complete the baseline calibration. This step can eliminate the influence of environmental interference factors on subsequent measurements.

3. Sampling and testing: Choose the appropriate injection method according to actual needs, such as directly inhaling gas or introducing samples through pipelines. If an electrochemical device is used, chlorine dioxide molecules react with the sensor electrode to generate a current signal, which is automatically converted into a concentration value by the system; Optical laws may involve technical means such as spectral analysis.

4. Data reading and recording: Real time observation of numerical changes on the display screen, and recording of the current concentration after stabilization. Some models support data storage function, making it easy to trace historical records.

5. Alarm response processing: Once an excessive situation is detected, the instrument will trigger an audible and visual alarm signal and transmit the information to the control center. At this time, emergency measures should be taken immediately, such as evacuating personnel and investigating the source of the leak.