Leotech™ 

Ultrasonic Thickness Scanners  

LS 213 

The Standard of Trust for Banks & Pawn Broking Institutions 

Built for Financial Operations 

"LS 213" is engineered to perform reliably in high-volume, customer-facing environments: 

• Gold Loan & Pawn Broking Counters 

• Commercial & State Banks 

• Microfinance & Leasing Institutions 

• Cooperative Societies & Rural Banks 

• Centralized Gold Evaluation Units 

Its simplicity, speed, and repeatability make it ideal for both frontline officers and centralized risk teams. 

The Scientific Testing Method: Ultrasonic Pulse-Echo Technology  

​The LS213 operates on the principle of Ultrasonic Time-of-Flight (ToF) and material density physics. It uses acoustic waves to "see" through the core of a gold bar:

​Acoustic Wave Emission: The hand-held transducer probe is placed against the gold bar, emitting a high-frequency ultrasonic pulse into the metal.

​Subsurface Travel: The sound wave travels through the mass of the gold at a highly specific constant speed known as the acoustic velocity of the material.

​The Physics of Velocity: Pure gold (999.9) has a distinct sonic velocity of approximately 3,240 meters per second (m/s). Conversely, common fraudulent inserts like Tungsten (3,980 m/s) or Lead (2,160 m/s) have vastly different acoustic speeds.

​Reflection & Calculation: The wave travels to the bottom of the bar and bounces back to the probe. The LS213 measures this echo time down to the nanosecond.

​Core Verification: If a gold bar contains a hidden core of tungsten, the sound wave abruptly changes speed at the boundary layer. The device instantly detects this discrepancy, revealing that the internal composition does not match pure gold, even if the exterior looks flawlessly authentic.

Key Advantages for Banks & Pawn Brokers    

• Exposes Hidden Core Counterfeits: Standard acid, XRF, and density tests only look at the surface or average weight. The LS213 penetrates deep into the core, instantly catching deep-set tungsten, copper, or lead inserts that other testers miss.

• ​100% Non-Destructive Subsurface Testing: No drilling, no cutting, and no chemical scraping. Your high-value 1\text{kg} investment bullion remains completely unmarred and in pristine, mint condition.

• ​Dual-Mode Verification Clarity: The device allows you to test via Thickness Measurement (comparing the digital reading against the physical dimensions of the bar) or Velocity Measurement (matching the acoustic signature against known pure gold standards).

• ​Compact, Handheld Portability: Unlike bulky desktop lab gear, the LS213 is battery-powered and highly portable, making it perfect for off-site acquisitions, vault audits, and counter-top retail environments.

• ​Unmatched Speed and Simplicity: Yields a definitive, clear reading on its digital backlit display in a matter of seconds—requiring minimal training for your vault staff or store associates to achieve expert-level verification.

Warranty & After-Sales Support     

Warranty Coverage  

One (1) years comprehensive warranty from the date of receipt

Free repair or replacement for defects arising from manufacturing faults or workmanship

Warranty does not cover:

• Improper or non-standard operation

• Unauthorized modifications or repairs

• Damage caused by extreme environmental conditions

• Transit or handling damage

• Consumable parts

• Damage caused by natural disasters (floods, fire, lightning, etc.)

After-Sales Service Commitment

• User instruction manual provided in both English and Sinhala

• Step-by-step video operation guide available for staff training

• Dedicated professional after-sales service team

• Service response within 12 hours

• Issue resolution within 24 working hours

• Life-long maintenance support available under an Annual Maintenance Contract (AMC)