ZEDO CS-20Z Industrial Ultrasonic Humidifier

Overview

The ZEDO CS-20Z Industrial Ultrasonic Humidifier is an engineered solution for precise, contamination-free relative humidity (RH) control in controlled environments where electrostatic discharge (ESD), particulate suspension, material hygroscopicity, or operator comfort are critical process variables. Unlike steam-based, electrode, or high-pressure mechanical humidification systems, the CS-20Z employs high-frequency ultrasonic transduction—operating at ≥1.7 MHz—to atomize deionized or purified water into sub-10 µm droplets without thermal input, phase change, or mechanical shearing. This principle ensures zero microbial amplification risk, no mineral carryover (when fed with DI water), and negligible airborne particulate generation—making it suitable for ISO 14644-compliant cleanrooms, pharmaceutical manufacturing suites (per EU GMP Annex 1), and electronics assembly areas governed by ANSI/ESD S20.20. The unit delivers a stable 6 kg/h saturated output under nominal conditions (25°C, 40% RH inlet air), with dynamic response time <60 seconds to setpoint deviation, enabling closed-loop RH stabilization within ±3% RH tolerance across defined airflow volumes up to 2,500 m³/h.

Key Features

• Integrated 10-element ceramic ultrasonic transducer array with self-diagnostic dry-run detection—eliminates crystal degradation due to intermittent operation or low-water conditions.
• Full 304 stainless steel chassis and internal wetted surfaces, electropolished and passivated per ASTM A967, ensuring corrosion resistance in high-humidity, saline, or mildly acidic ambient conditions.
• IP68-rated sealed variable-frequency power supply and 36 V DC brushless fan—certified for continuous submersion at 1 m depth; eliminates condensation-induced short circuits in high-dew-point installations.
• Japanese-made Shinyo high-accuracy capacitive RH sensor (±2% RH accuracy, 0.1% RH resolution) coupled with microprocessor-based PID logic for adaptive feedback control.
• Modular mist distribution interface—supports optional ducted delivery (Φ50–100 mm PVC/SS conduit) for remote humidification without compromising local air integrity.
• Zero-noise operation (<25 dB(A) at 1 m) and absence of moving parts beyond the fan—meets acoustic requirements for QC laboratories, analytical instrument rooms, and biosafety cabinets.

Sample Compatibility & Compliance

The CS-20Z is validated for use with purified water (USP Purified Water or ASTM D1193 Type IV), avoiding scale formation and maintaining consistent aerosol size distribution. It complies with electrical safety standards IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity), and its non-sterile design aligns with ISO 14644-1 Class 5–8 cleanroom service applications when installed upstream of HEPA filtration. While not a medical device, its operational parameters support adherence to FDA 21 CFR Part 11 data integrity principles when integrated with validated SCADA or LIMS platforms via optional 4–20 mA analog output or Modbus RTU interface. No lubricants, adhesives, or volatile organic compounds (VOCs) contact the humidified airstream—meeting USP extractables profiling thresholds for pharmaceutical facility HVAC support.

Software & Data Management

The embedded controller features a tamper-resistant EEPROM log storing >10,000 timestamped events—including RH setpoint history, runtime hours, fault codes (e.g., “Low Water”, “Transducer Overtemp”), and calibration drift alerts. Optional Ethernet/Wi-Fi module enables secure HTTPS-based remote monitoring through browser-accessible web HMI, supporting CSV export of 1-minute interval RH/temperature logs. Audit trail functionality meets ALCOA+ criteria: attributable, legible, contemporaneous, original, accurate, complete, consistent, enduring, and available. Firmware updates are performed via signed binary upload with SHA-256 verification, preventing unauthorized modification.

Applications

• ESD-sensitive electronics manufacturing: wafer fabrication, PCB assembly, semiconductor test labs.
• Pharmaceutical production: lyophilization support chambers, capsule filling rooms, stability testing suites.
• Research laboratories: cell culture incubator pre-humidification, glovebox make-up air conditioning, precision weighing environments.
• Federal and academic facilities: NIST-traceable metrology labs, archival document storage vaults, museum conservation spaces.
• Food-grade processing: baking proofing zones, dairy packaging lines, cold-chain staging areas requiring dew-point control.

FAQ

What water quality is required for optimal performance and longevity?
Deionized (DI) or reverse osmosis (RO) water with conductivity ≤5 µS/cm is strongly recommended. Tap water may be used only with inline 1-µm sediment + 0.5-µm carbon filtration and quarterly descaling using citric acid solution.
Can the CS-20Z operate continuously for unattended 24/7 duty cycles?
Yes—designed for >8,760 annual operating hours with scheduled maintenance every 6 months (transducer inspection, sensor recalibration, and stainless reservoir cleaning).
Is ducted installation supported, and what is the maximum recommended duct length?
Yes—flexible PVC or stainless steel ducting up to 15 meters total equivalent length (including bends) is permissible; static pressure loss must remain below 50 Pa at rated airflow.
Does the unit comply with explosion-proof or hazardous location requirements?
No—the CS-20Z is rated for general-purpose indoor use only (IEC 60079-0, non-Ex). For Zone 2 or Class I Div 2 environments, consult ZEDO’s ATEX-certified humidification system portfolio.
How is calibration traceability maintained for regulatory audits?
Each unit ships with a factory calibration certificate referencing NIST-traceable RH/temperature standards (NIST SRM 2690b & 2691a); field recalibration tools and procedures are documented in the IQ/OQ protocol package.