The technical disclosure of the air pollution monitoring instrument for civil air defense residential buildings is a key document to ensure the correct installation, commissioning, and use of the equipment. The following is the technical disclosure of the air pollution monitoring device for civil air defense residential buildings, mainly including detailed explanations of the basic functions, installation requirements, operation steps, maintenance and upkeep of the equipment.
1. Equipment Overview
The air pollution monitoring device for civil air defense residential buildings is a type of gas pollution monitoring equipment used in civil air defense engineering. It is mainly used to detect the concentration of toxic and harmful gases in the air to ensure the safety of personnel in the protected area. Common monitoring gases include but are not limited to toxic gases such as ammonia, chlorine, phosphine, hydrogen cyanide, as well as oxygen concentration.
2. Equipment functions and technical parameters
Monitoring scope: Monitor the concentration of various toxic gases, such as:
Ammonia (NH3): 0-100ppm
Chlorine gas (Cl ₂): 0-20ppm
Hydrogen cyanide (HCN): 0-10ppm
Phosphine (PH ∝): 0-2ppm
Carbon monoxide (CO): 0-1000ppm
Oxygen (O ₂): 0-30%
Response time: ≤ 30 seconds (fast response)
Sensitivity: 0.1ppm or lower (depending on the specific gas)
Alarm function: It has sound and light alarm function, adjustable alarm threshold, and supports multiple alarm levels
Display mode: LCD or LED digital display screen, which can display the current gas concentration and alarm status
Battery life: The device should have a long battery life, generally more than 48 hours
Working environment temperature: -10 ° C to 50 ° C
Relative humidity: 0% -95% (no condensation)
3. Installation requirements
Installation location: Select a suitable installation location based on the layout of the civil air defense area. It should be installed as much as possible in low-lying areas where gas may accumulate or in places with poor ventilation.
Installation height: Generally installed at a height of about 1.5 meters above the ground to effectively monitor toxic gases in the air.
Power connection: Ensure that the power supply meets the device requirements, typically 220VAC or 12VDC. If it is a built-in battery type device, ensure that the battery has sufficient power and conduct regular inspections.
Grounding requirements: The equipment must be well grounded to prevent electrical equipment from malfunctioning due to static electricity or lightning strikes.
Communication interface: The device needs to be connected to the central control system or alarm system. Usually RS485, Modbus, or wireless communication (such as Wi Fi or Zigbee) are used.
4. Operation steps
Power on check: When turning on, check whether the battery level and gas concentration displayed on the screen are normal.
Set alarm threshold: Set alarm thresholds for various gases according to the needs of the civil defense area. When the gas concentration exceeds the set range, the equipment will automatically trigger an alarm.
Real time monitoring: The device can continuously monitor the air quality, regularly check the data on the display screen, and ensure that the gas concentration is within a safe range.
Data recording and export: The device supports automatic recording of gas concentration changes, and operators can periodically export data for further analysis and archiving.
5. Maintenance and upkeep
Regular calibration: The equipment is calibrated every 6 months to ensure measurement accuracy.
Cleaning and maintenance: Regularly clean the appearance of the equipment, especially the sensor part, to avoid dust accumulation affecting detection accuracy.
Check the battery: Regularly check the battery level and status to ensure that the device works properly in emergency situations. If the battery is low, it should be replaced in a timely manner.
Gas detection: Gas calibration cylinders (standard gases) can be used for inspection to ensure that the gas concentration measured by the equipment meets the standards.
Troubleshooting: When a malfunction occurs, check the alarm records and fault prompts of the equipment, and troubleshoot according to the operation manual. If it cannot be resolved, the manufacturer should be contacted for repair.
6. Safety precautions
Pre installation inspection: Before installing the equipment, ensure that there are no flammable or explosive gases on site.
Electrical safety: Ensure a secure power connection to avoid equipment damage or the risk of electric shock.
Regular inspection: Conduct regular checks on the equipment to ensure that the gas detection module is in normal working condition.
Avoid high temperatures: The equipment should not be installed near high temperatures or strong radiation sources to avoid affecting performance.
7. Fault diagnosis and handling
No display or unable to start:
Check if the power is connected
Check the battery level and replace it if necessary
Alarm not sounding or delayed:
Check if the alarm threshold setting is reasonable
Check if the gas sensor is blocked or damaged
Abnormal gas concentration display:
Calibration equipment
Check if the sensor is faulty or needs to be replaced
8. Technical support and after-sales service
Provide manufacturer service hotline and technical support email to ensure timely assistance in case of equipment failure.
Warranty period and maintenance services: Equipment usually has a warranty period of 1-2 years. During this period, if equipment malfunctions, the manufacturer is responsible for free repair or replacement. Provide long-term paid maintenance services after the warranty period.
Summary:
As an important equipment to ensure the safety of personnel, the air pollution monitoring device for civil air defense residential buildings must be operated strictly in accordance with relevant regulations during installation, use, and maintenance. Through precise gas concentration monitoring and timely warning, the safety of personnel within the protected area can be effectively ensured.