how to measure ultrasonic frequency,ultrasonic energy meter
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| Model | ARS-SYJ100 | ARS-SYJ -100S | ARS-SYJ -200 | 
| Measuring range | 0 - 255 w/in2 | 0 - 255 w/in2 | 0 - 255 w/in2 | 
| Freqeuncy | 10 kHz – 100 kHz | 10 kHz – 100 kHz | 10 kHz – 200KHz (Frequency range is bigger)  |  		
| Data display | Color screen display, time and energy curve, the maximum, minimum, average, record file number | Color screen display, time and energy curve, the maximum, minimum, average, record file number, ultrasonic frequency | Color screen display, time and energy curve, the maximum, minimum, average, record file number, ultrasonic frequency | 
| data storage | Time, instantaneous energy, continuous recording 24 hours, 180 k data (0.5 seconds per point) | Time, frequency, transient energy, continuous record 48 hours, 360 k point data (every 0.5 seconds | Time, frequency, transient energy, continuous record 48 hours, 360 k data (0.5 seconds per point) | 
| Power | 3.7 V li-ion rechargeable battery | 3.7 V li-ion rechargeable battery | 3.7 V li-ion rechargeable battery | 
| Meterial | Stainless steel tube | Stainless steel tube | Stainless steel tube  |  		
| fluid temperature | 0℃-150℃ | 0℃-200℃ | 0℃-200℃ | 
| Meter diameter | 10 mm | 10 mm | 10 mm | 
| Length | 1.0 m;0.5 m stainless steel probe + 0.5 m cable | 1.0 m;0.5 m stainless steel probe + 0.5 m cable | 1.0 m;0.5 m stainless steel probe + 0.5 m cable | 
| Frequency display | No | yes | yes | 
| Data upload | No | Yes | Yes | 


how to measure ultrasonic frequency,ultrasonic energy meter