ZEDO ZS-40Z Industrial Ultrasonic Humidifier

Overview

The ZEDO ZS-40Z Industrial Ultrasonic Humidifier is engineered for precise, stable, and contamination-free humidity control in controlled laboratory and cleanroom environments. Unlike evaporative or steam-based systems, it operates on the principle of piezoelectric ultrasonic atomization: a high-frequency (≈1.7 MHz) transducer vibrates at resonance, mechanically shearing deionized or purified water into sub-10 µm droplets without thermal phase change. These micro-droplets are then entrained by a corrosion-resistant, IP68-rated centrifugal blower and dispersed uniformly into the air stream—enabling rapid, energy-efficient humidification with negligible microbial risk and zero mineral carryover when operated with appropriate water quality (e.g., ASTM D1193 Type II or ISO 3696 Grade 2 water). Designed for integration into HVAC ducts, environmental chambers, or localized workstations, the ZS-40Z delivers 12 kg/h of consistent output under nominal conditions (25°C, 40% RH inlet air), supporting critical processes where static charge mitigation, material dimensional stability, or electrostatic-sensitive assembly require tight RH regulation between 40–70% RH.

Key Features

• Full stainless steel (AISI 304) tank and structural chassis—electropolished interior, seamless welds, and no painted or galvanized components to prevent rust or particulate shedding.
• Integrated ultrasonic transducer module with proprietary ceramic diaphragm—resistant to scaling in moderately hard water (up to 120 ppm CaCO₃), rated for 3,000–5,000 operating hours, and field-replaceable without tools.
• IP68-sealed variable-frequency power supply—fully potted, submersible-rated, delivering stable 1.7 MHz drive regardless of input voltage fluctuation (±10%); eliminates transformer-induced harmonic distortion and reduces standby power loss by >40% vs. conventional linear supplies.
• 36 V DC brushless centrifugal fan with sealed ball bearings and marine-grade coating—airflow optimized for laminar dispersion, noise level <52 dB(A) at 1 m, and compatible with continuous-duty operation in Class 10,000 cleanrooms.
• Microprocessor-based controller with Shinyo (Japan) capacitive relative humidity sensor (±2% RH accuracy, 0.1% RH resolution)—supports PID-controlled feedback mode when paired with external RH probe; includes data logging buffer (72-h history) and RS-485 Modbus RTU interface for BMS integration.
• Automatic water level management system—floatless ultrasonic level sensing, overflow cutoff, dry-run protection, and programmable auto-fill cycle timing to minimize manual intervention and prevent stagnation.

Sample Compatibility & Compliance

The ZS-40Z is validated for use with purified water (conductivity ≤10 µS/cm), distilled water, or reverse-osmosis-treated feed water per ASTM D1193 Type IV specifications. It is not intended for use with tap water, additives, or biocides—additives compromise transducer longevity and violate ISO 14644-1 particle generation limits. The unit complies with IEC 61000-6-3 (EMC emission limits), IEC 60335-1 (general safety), and meets CE marking requirements for industrial equipment. While not certified to FDA 21 CFR Part 11 out-of-the-box, its audit-ready firmware supports configurable electronic signature, event logging, and user-access-level permissions—enabling qualification under GLP/GMP Annex 11 and EU GMP Annex 15 frameworks when deployed with documented IQ/OQ/PQ protocols.

Software & Data Management

The embedded controller provides local HMI via a 3.5-inch TFT LCD with touch-sensitive membrane keypad—supporting multilingual UI (English, German, Japanese). All operational parameters—including runtime, fault codes, RH setpoint deviation, and transducer impedance trends—are timestamped and stored in non-volatile memory. Optional Ethernet/Wi-Fi gateway module enables remote monitoring via HTTPS-secured web dashboard or integration into LabVantage, Siemens Desigo, or Honeywell Experion platforms. Data export is available in CSV format compliant with ASTM E2500-22 for traceability. Firmware updates are performed via USB flash drive with SHA-256 signature verification to ensure integrity.

Applications

• Humidity stabilization in semiconductor photolithography rooms (maintaining ±2% RH tolerance during mask alignment).
• Preventing electrostatic discharge (ESD) in PCB assembly labs (IEC 61340-5-1 compliant RH control).
• Conditioning hygroscopic reference standards (e.g., NIST SRM 2680a) prior to gravimetric calibration.
• Supporting ASTM D5209 (textile testing), ISO 18416 (microbial culture media conditioning), and USP packaging stability studies.
• Local humidification in gloveboxes handling lithium-ion battery electrode slurry preparation (reducing solvent evaporation artifacts).

FAQ

What water quality is required for optimal transducer life and particle control?

Deionized or distilled water meeting ASTM D1193 Type II or ISO 3696 Grade 2 specifications is mandatory. Tap water or softened water introduces scale-forming ions that accelerate transducer degradation and increase airborne particle counts beyond ISO 14644-1 Class 5 limits.

Can the ZS-40Z be integrated into a building management system (BMS)?

Yes—via optional RS-485 Modbus RTU or Ethernet/IP gateway. Preconfigured register maps support real-time RH setpoint adjustment, status reporting (running/fault/idle), and alarm forwarding (low water, overtemperature, transducer impedance drift >15%).

Is the unit suitable for cleanroom Class 100 (ISO 5) environments?

It may be deployed upstream of HEPA filtration or within recirculating ductwork, but direct discharge into ISO 5 space requires additional validation per ISO 14644-3 Annex B. Particle generation testing shows <100 particles/m³ ≥0.5 µm at 1 m distance when fed with Type II water.

Does the controller support audit trail and electronic signatures per 21 CFR Part 11?

The base firmware logs all parameter changes with user ID and timestamp. Full Part 11 compliance requires optional PKI-enabled gateway module and documented procedural controls for role-based access, digital signature capture, and immutable log archiving—validated per vendor-supplied IQ/OQ documentation.

What maintenance intervals are recommended for laboratory-grade reliability?

Transducer cleaning every 200 operational hours using 5% citric acid solution; stainless steel tank disinfection weekly with 70% ethanol; fan bearing inspection annually. Logbook templates and PM checklists are included in the installation qualification package.