The technical indicators of the air pollution monitoring device for Taicang Supermarket's civil air defense usually involve its functions, performance, measurement range, and other aspects. Although the specific device models may vary, generally speaking, the technical indicators of air pollution monitoring devices include the following aspects:
Monitoring gas types:
Common monitoring gases include toxic gases (such as ammonia, hydrogen sulfide, carbon monoxide, chlorine, nitrogen oxides, etc.) and harmful volatile organic compounds (VOCs).
Measuring range:
The measured gas concentration range generally ranges from low concentrations (such as ppb level) to high concentrations (such as ppm level), depending on the design of the equipment.
Sensitivity and accuracy:
Sensitivity usually refers to the minimum gas concentration that a device can detect, while accuracy refers to the deviation between the measured result and the actual value. Generally speaking, the accuracy is between ± 1% and 5%.
Response time:
Response time refers to the time required from a change in gas concentration to a stable reading displayed by the device, typically ranging from a few seconds to several tens of seconds.
Working temperature and humidity range:
The working temperature range of the equipment is usually between -10 ℃ and 50 ℃, and the humidity range is usually 10% -90% RH (relative humidity).
Sensor type:
Different gas detection may use different sensors, such as electrochemical sensors, optical sensors, semiconductor sensors, etc.
Power supply and power consumption:
Usually powered by batteries, the battery life may range from a few hours to over ten hours, and external power sources can also be connected. The power consumption is generally low.
Alarm function:
When the gas concentration exceeds the set threshold, the monitor will alert the staff to take measures through sound and light alarms.
Data storage and display:
The equipment is usually equipped with a liquid crystal display (LCD) for real-time display of gas concentration, and may support data storage and export functions for later analysis and reporting.
Communication function:
Some models may support wireless communication (such as Wi Fi, Bluetooth, etc.) or wired communication (such as RS485, Modbus, etc.) for remote monitoring and management.
These technical indicators can help ensure accurate and efficient monitoring of air quality, ensuring timely alarm and effective measures in case of potential toxic gas leaks or pollution.