Shumei KQ-700GTDV Desktop High-Frequency Temperature-Controlled Ultrasonic Cleaner

Overview

The Shumei KQ-700GTDV is a desktop-integrated high-frequency temperature-controlled ultrasonic cleaner engineered for precision laboratory and industrial cleaning applications where thermal stability, frequency consistency, and process repeatability are critical. Unlike conventional ultrasonic cleaners that rely solely on passive heat dissipation or intermittent heating cycles—leading to uncontrolled bath temperature drift during extended operation—the KQ-700GTDV implements an active dual-mode thermal management system. This architecture combines solid-state Peltier-based cooling with resistive heating under closed-loop PID control, enabling precise maintenance of bath temperature within ±0.5 °C across the full 0–80 °C range—even during continuous 480-minute ultrasonic cycles at full 700 W output. Its 80 kHz transducer array operates in true constant-frequency mode, minimizing cavitation threshold variation and delivering uniform energy distribution throughout the 27 L stainless steel tank (500 × 300 × 180 mm). Designed for compliance-driven environments, the unit supports traceable operation through real-time digital monitoring of ultrasonic power (%), liquid level (mm), actual and setpoint temperature (°C), elapsed and cumulative runtime (h), and electrical parameters (voltage/current status). The integrated solvent vapor recovery system mitigates volatile organic compound (VOC) emissions, aligning with OSHA 29 CFR 1910.1200 and EU REACH Annex XVII requirements for enclosed ultrasonic processing.

Key Features

• Active thermal regulation via simultaneous heating (800 W) and cooling (350 W) modules ensures stable bath temperature during prolonged ultrasonic operation
• Digital microcontroller interface with simultaneous real-time display of ultrasonic power (%), liquid level (mm), actual/setpoint temperature (°C), timer (min), and cumulative operating time (up to 999,999 hours)
• Stainless steel (SUS304) tank and motorized sound-dampening lid with automatic locking mechanism reduce airborne noise to ≤65 dB(A) at 1 m
• Automated water inlet and drain system with low-level and dry-run protection prevents transducer damage and ensures repeatable fill volume
• Integrated VOC vapor condensation recovery module minimizes solvent loss and meets indoor air quality guidelines per ASHRAE Standard 110
• Configurable ultrasonic duty cycle and power ramping profiles support delicate sample handling—including biological tissues and MEMS components
• Over-voltage, over-current, and open-circuit fault detection with visual alarm indicators ensure operational safety and equipment longevity

Sample Compatibility & Compliance

The KQ-700GTDV accommodates a broad range of sample geometries and material classes—including metal alloys, silicon wafers, optical lenses, ceramic substrates, and polymer-based medical devices—without compromising surface integrity. Its 80 kHz frequency delivers fine-cavitation density ideal for sub-micron particle removal while limiting macroscopic erosion. The unit complies with IEC 61000-6-3 (EMC emission limits) and IEC 61000-6-2 (immunity standards), and its electrical safety design conforms to IEC 61010-1:2010 for laboratory equipment. For regulated laboratories, the digital log architecture supports audit-ready documentation: all parameter changes, alarm events, and runtime data are timestamped and non-volatile stored. While not inherently 21 CFR Part 11 compliant, the system’s deterministic behavior and immutable event logging enable validation protocols under GLP and ISO/IEC 17025 frameworks when paired with external electronic lab notebook (ELN) integration.

Software & Data Management

Operation is managed exclusively via an embedded 4.3-inch TFT-LCD touchscreen with capacitive touch response and IP65-rated front panel. All settings—including ultrasonic power (40–100 %), temperature setpoint (0–80 °C), timer (1–480 min), and water level target (1–140 mm)—are stored in non-volatile memory with write-protection logic. The controller records 10,000 sequential operational events with millisecond-resolution timestamps, including start/stop commands, temperature deviations >±1 °C, power fluctuations >±5 %, and safety interlock activations. Data export is supported via USB 2.0 port (FAT32 formatted drive required) in CSV format for post-processing in MATLAB, Python pandas, or LIMS platforms. No proprietary software installation is required; raw logs contain column headers compatible with standard spreadsheet parsers.

Applications

• Precision cleaning of semiconductor photomasks, wafer carriers, and metrology fixtures prior to lithography or inspection
• Removal of polishing residues from optical components (e.g., laser mirrors, interferometer prisms) without introducing micro-scratches
• Pre-analytical sample preparation for ICP-MS and GC-MS—decontamination of quartz vials, autosampler needles, and nebulizer cones
• Cell lysis and homogenization of tissue samples under controlled thermal conditions to preserve protein conformation
• Ultrasonic-assisted extraction of bioactive compounds from botanical matrices with minimized thermal degradation
• De-gassing of high-viscosity resins and adhesives prior to casting or coating processes
• Validation of cleaning efficacy per ASTM D2606-20 (Standard Test Method for Ultrasonic Cleaning Performance)

FAQ

Does the KQ-700GTDV support remote monitoring or Ethernet connectivity?
No. It operates as a standalone instrument with local HMI control only. Data export is limited to USB mass storage.
Can the unit maintain 25 °C continuously during a 4-hour ultrasonic cycle?
Yes—provided ambient temperature remains ≤30 °C and the tank is filled to ≥100 mm liquid level. Cooling capacity is rated for ΔT = 15 K above ambient.
Is the stainless steel tank electropolished or passivated?
The tank is fabricated from SUS304 with mechanical polishing (Ra ≤ 0.8 µm) and citric acid passivation per ASTM A967.
What solvents are compatible with the vapor recovery system?
Acetone, isopropanol, ethanol, and deionized water are fully supported. Chlorinated solvents (e.g., chloroform) are prohibited due to corrosion risk and condenser compatibility.
How is calibration verified for temperature and power output?
Temperature accuracy is validated using NIST-traceable PT100 probes; ultrasonic power is confirmed via calorimetric measurement per IEC 61846. Factory calibration certificates are provided with each unit.