The laser emitter window and the receiving lens are the most precise external interfaces of the profilometer. Pollutants can directly lead to a decline in measurement accuracy or even failure.

Dirt on the laser emission window: It can cause deformation of the laser lines, energy attenuation, and uneven width, directly resulting in errors in 3D contour reconstruction.

Dirty receiving lens: Just like a dirty camera lens, it can lead to blurred imaging, reduced contrast, inability to accurately capture laser lines, noise or data loss.

Therefore, it is crucial to keep these two components clean.

Overview of the overall technical advantages of the VGT-1209FH ultrasonic cleaner from Weigute:

This model is targeted at the optical industry and the precision industrial cleaning market, etc. Its core advantages lie in providing high adjustability, precise control and convenient operation, to meet the cleaning requirements of high-value and high-precision components such as the laser emission window and receiving lens of the 3D profilometer.

I. Technical aspect: A precisely controllable energy output system

1. Multi-band piezoelectric ceramic transducer system：

Technical essence: The core material of the transducer is the PZT-8 series or high-performance piezoelectric ceramics of equivalent grade that have undergone polarization treatment. This material features a high electromechanical coupling coefficient and low mechanical loss, ensuring efficient conversion of electrical energy to acoustic energy.

The realization of three-frequency switching: The core inside the device is a digital frequency synthesizer. It generates three precise square wave or sine wave signals of 40KHZ, 80KHZ and 100KHZ through programming, and drives the transducer to work near its mechanical resonant point through the power amplifier.

Advantages brought:

40KHZ: With a longer wavelength, the energy released when cavitation bubbles burst is stronger, which is used to deal with adherent particles.

80/100KHZ: With a shorter wavelength, finer and denser cavitation bubbles, and a more "gentle" cavitation effect, it can penetrate into the microstructure for cleaning. At the same time, the impact force on the workpiece surface is significantly reduced, greatly protecting the anti-reflection coating and substrate of your optical devices.

2. Full-bridge power drive circuit：

Technical essence: Unlike the inexpensive half-bridge or self-paying circuits, the VGT-1209FH ultrasonic cleaner from VGT adopts a full-bridge switching power amplifier circuit. Use MOSFET tubes with high current and low on-resistance.

Advantages brought:

The foundation of stepless power regulation: Precisely controlling the average power output to the transducer through PWM (Pulse Width Modulation) to achieve smooth regulation from light to heavy.

High conversion efficiency and stability: The full-bridge circuit has higher efficiency, generates less heat, and can provide a more stable and pure ultrasonic waveform, avoiding inconsistent cleaning effects and transducer overload damage caused by power fluctuations.

3.PID Closed-loop Temperature Control system：

The essence of the technology: Heating is not merely a simple on-off control. Instead, it involves real-time monitoring of the liquid temperature through a Pt100 platinum resistance temperature sensor. The microprocessor operates the PID (proportional-integral-derivative) algorithm to dynamically adjust the on-off duty cycle of the heater.

The advantages it brings: Precise temperature control, with the temperature controllable within ±2℃. This is crucial for professional cleaning agents that require specific temperatures to activate their activity, avoiding the rapid evaporation of the cleaning solution or damage to the workpiece due to excessively high temperatures, and also preventing the decline in cleaning effectiveness due to excessively low temperatures.

Ii. Core structural level: Designed for industrial durability and reliability

1.SUS304 stainless steel integrated tank body and welding process:

Structural essence: The inner groove is not a simple stamping type, but is precisely welded from SUS304 stainless steel plates with a thickness of ≥1.2mm by argon arc welding. The weld seams have been polished and are smooth without dead corners.

Advantages brought:

Corrosion resistance: Long-term resistance to organic solvents such as isoacetone and acetone, as well as weak acid and weak alkali cleaning agents.

Efficient acoustic energy transmission: The thick substrate and one-piece molded structure reduce the self-harmonics and energy loss caused by vibration, enabling ultrasonic energy to be transmitted more efficiently into the cleaning solution.

Long service life: It avoids the risk of perforation and leakage caused by long-term vibration and corrosion of thin iron sheet tanks.

2. Coupling process of transducer and tank body:

Structural material: This is the most crucial process that determines the lifespan and efficiency of ultrasonic cleaning machines. The VGT-1209FH ultrasonic cleaner from Weigute adopts the "high-temperature silver brazing" process. That is, under the protective gas, the transducer is permanently metallurgically bonded to the outer bottom of the tank with high-temperature silver alloy solder.

The advantages brought (compared with the adhesive process of low-cost products) :

Extremely high energy transmission efficiency (>95%) : The silver solder layer has almost no energy loss, while the adhesive layer absorbs and attenuates a large amount of energy.

Long-term stability and durability: The silver solder layer does not age, become brittle or fall off like glue with temperature changes, and can withstand long-term heating and power shock. It fundamentally eliminates the risk of transducer detachment, ensuring the stable operation of the equipment for several years or even longer.

3. Ergonomics and Error-proof Structural design:

Structural essence：

Low-position inclined drain valve: It adopts a brass or stainless steel valve located at the lowest point of the tank. It achieves thorough liquid discharge without residue through a ball valve or butterfly valve structure, which is a hallmark of professional models.

Sunken tank body and reinforcing ribs: The periphery of the tank body is designed with reinforcing rib structures, which not only enhance the structural strength, suppress unnecessary vibration and noise, but also lower the center of gravity of the equipment and make its operation more stable.

Sealed upper cover and waterproof panel: Prevents the vapor of cleaning solution from entering the electronic compartment and protects the internal core circuits.

To sum up, the advantage of the VGT-1209FH ultrasonic cleaner from Vigot does not lie in a single "black technology", but in the overall engineering implementation quality at the system level:

Through high-quality piezoelectric ceramics, full-bridge circuits and digital frequency synthesis, precise, stable and efficient ultrasonic energy output has been achieved.

A robust, durable and efficient energy conduction system has been constructed through a 304 stainless steel integrated tank body and high-temperature silver brazing process.

Through PID temperature control and excellent structural design, it provides a reliable, convenient and professional user experience.