1. Appearance and Functional Inspection
1. Lens and Window Condition
Check the explosion-proof glass for scratches, fogging, or frost (affecting infrared transmittance).
Check whether the infrared light is illuminating normally (block the photoresistor at night to test).
2. Device Operational Status
Noise, blur, or color distortion on the surveillance screen (may be due to aging of the infrared light or lens contamination).
Frequent device restarts or freezes (check power supply stability and heat dissipation).
2. Environmental Adaptability Testing
1. Protective Performance Verification
Check for aging of the sealing strips (a sign of degraded explosion-proof performance).
Test for IP68 waterproofing (spray water and observe for internal water seepage).
2. Heat Dissipation and Airtightness
Check the device housing temperature (continuously high temperatures may affect the life of the infrared light). Check if the heat dissipation vents are blocked (clean monthly in dusty environments).
III. System Function Testing
1. Intelligent Function Verification
Test motion detection and alarm linkage for proper function (e.g., the 3D positioning function of the Hikvision DS-2DF5430I-DWX).
Check network transmission stability (PoE devices require voltage fluctuation testing).
2. Infrared Performance Evaluation
Measure night vision range to ensure it meets the standard (e.g., for 100-meter infrared models, verify the actual illumination range).
Observe image quality in low light (clear images should be maintained at 0.001 Lux).
IV. Maintenance Recommendations
Routine Maintenance: Clean the explosion-proof glass monthly and inspect the seals quarterly.
In-depth Maintenance: Annually test the infrared lamp power loss (requires specialized equipment).
