Predominant Sound Frequency（主频率）：700 to 2800 Hz

Cyclic Pulsation Rate and Duty Cycle

Sound pressure level

Sound Pressure Level Change With Voltage

Off-Axis Sound Levels

Alarm Activation Delay：不大于500 ms

Low Temperature Test
Test temperature :-40±3°C
Test duration :2 hr

High Temperature Test
Test temperature : 85±3°C
Test duration :2 hr

Rain Test
The rate of rain deposit :2.5(+1.6/-0) mm/min
Deliver angle from nozzle :45°
Test duration :2 hr

Vibration Test Resonance Search Test
Frequency / Displacement :10 ~ 27 Hz / 6.76mm
Frequency / Acceleration :27 ~ 500 Hz / 10g
Sweep duration :15m

Vibration Test Resonance Dwell Test
Vibration frequency :Resonance frequency
Acceleration :10g
Test direction :X axis、Y axis & Z axis
Test duration :30 min/axis

Vibration Test Vibration Cycling Test
Vibration Test Vibration Cycling Test
Frequency :27 ~ 500 Hz
Acceleration :10 g
Sweep duration :15 min
Test duration :3 hr
Test direction :X、Y、Z axis
Operate time :Last 15 min

Corrosion Test
Type of solution to be sprayed :NaCl
Salt solution concentration :5±1%
pH value of solution :pH 6.5 ~ 7.2
Temperature in chamber :35(+1.1/-1.7)°C
The rate of salt deposit :1~2 ml/hr/80cm2
Test duration :50 hr (24hr exposure and 1hr dry, 2 cycles)

High Pressure Hot Water Test
Water temperature :85 °C
Water pressure :Above 6.9 Mpa
Water flow rate :Above 18.9 L/min
Nozzle angle :15°
Spray distance :Below 300 mm
Test period :Spray 10sec(MIN) in each 30sec(MAX)

Dust Test
Type of dust :Arizona dust
Dust quantity :4.5 kg/m3
Stirring time :2 sec
Suspending time :15 min
Testing duration :5 hr

Endurance Test at Low Temperature
Test temperatur :-40 °C±3°C
Test duration :4 hr
Operating time :30 sec On / 30 sec Of

Endurance Test at High Temperature
Test temperature :85 °C±3°C
Test duration :4 hr
Operating time :30 sec on & 30 sec off

Endurance Test at Room Temperature
Tes temperature :25 °C±11°C
Test duration :100 hr
Operating time :30 sec on & 30 sec off