Parameters	Specifications	Notes
*Test Mode	Fully Automatic Testing
*Main Control Type	Android Tablet or Phone
Scanning Speed	≥40 cycles/second
Acoustic Accuracy	≤0.5%
Measurement Accuracy (Horizontal Accuracy)	±0.2%FS
*Measurement Range	0～8400mm (Aperture)	The single roller design allows for testing small apertures with a small blind zone.
*Angle Correction	Dual Steel Wire Positioning, No Physical Correction Required
Ultrasonic Frequency	88kHz
Emission Voltage	1000V
*Maximum Measurement Depth	200m
Maximum Depth Resolution	≤5mm, Depth Error ≤0.1%
Sound Velocity Calibration	Available
Recording Method	Color Image and Data Files
Data Export	USB or Wireless Upload
Operating Temperature	-20～+70℃
*Power Supply Mode	Built-in Lithium Battery, can be used with an external power bank, continuous operation for over ten hours; also supports 12V power supply from car cigarette lighters	(Supports connection to electric vehicle power supply and vehicle cigarette lighter power supply), adaptable to various on-site conditions;
*Probe Size	80mm*80mm*325 mm
Probe Mass	10kg
Maximum Mud Specific Gravity	1.4g/cm3
*Data Storage Mode	Raw data is stored in the probe. Data can be directly read from the probe using a tablet or mobile phone and uploaded to the MC series platform for permanent storage, ensuring data security and reliability.
*Lifting Speed	Adjustable rise, fall, and speed, 0-30m/min continuously adjustable, with an emergency lifting function.	Testing speed can reach 30 meters/minute, significantly improving testing efficiency.
*Bottom and Orifice Automatic Stop Functions	Available
*Wind Lifting Device Dimensions	340mm×370mm×260mm
*Wind Lifting Device Weight	26kg
Lifting Device Design Scheme	Modular design, cable-free design, convenient maintenance.
Data Upload	Digital twin platform synchronizes with the field, allowing real-time monitoring of borehole data.
Working Time	The probe can be used continuously for up to 25 hours.

Advantages of the new SY-7355 Ultrasonic Drill Hole Monitor compared to the old model:
 
1. Compact size, lightweight, easy to handle and unload, low transportation costs;
 
2. Reduced personnel work on the borehole top, avoiding personal safety risks; testing can be completed simply by placing the winch on the vehicle;
 
3. One-button fully automatic testing, no professional training required, avoiding result deviations caused by unfamiliarity with newly deployed equipment;
 
4. Testing speed up to 30 meters/minute, significantly improving testing efficiency;
 
5. Raw data is stored on the probe, and can be directly read from the probe using a tablet or mobile phone and uploaded to the platform for permanent storage, ensuring data security and reliability;
 
6. Modular design, cable-free design, convenient maintenance;
 
7. Diverse power supply options (supports connection to electric vehicle power supply and vehicle cigarette lighter power supply), adaptable to different field conditions;

8. Digital twin platform synchronizes with the field, real-time monitoring of borehole data;

9. Long standby time, the probe can be used continuously for up to 25 hours. 

10. The single roller design can measure small apertures with a small blind zone.