ZEDO QS-15 Evaporative Media Humidifier

Overview

The ZEDO QS-15 Evaporative Media Humidifier is an industrial-grade, energy-efficient humidification system engineered for precise, stable, and contamination-controlled relative humidity (RH) management in mission-critical environments. Unlike ultrasonic or high-pressure fogging systems, the QS-15 operates on the principle of adiabatic (isenthalpic) evaporation—where dry air passes through a vertically oriented, corrugated cellulose or polymer-based evaporative media (wetted membrane), absorbing moisture via latent heat exchange without altering air temperature significantly. This thermodynamically efficient process delivers consistent RH control while minimizing electrical load and eliminating risk of water droplet carryover—a critical requirement in data centers, telecom switching rooms, and cleanroom-adjacent electronic assembly zones. The unit integrates seamlessly into HVAC ductwork or AHU plenums, supporting continuous operation under variable ambient conditions (10–35°C, 20–70% RH input air). Its closed-loop water circulation architecture—comprising a stainless steel sump tank, low-cavitation centrifugal pump, precision distribution header, and gravity-fed return—ensures uniform media saturation and long-term operational reliability.

Key Features

• Stable 15 kg/h humidification capacity at rated airflow (3500 m³/h), validated per ISO 16000-18:2014 for evaporative humidifier performance testing
• Corrugated hydrophilic media with >95% wetting efficiency and anti-microbial treatment (ISO 22196-compliant surface inhibition)
• Intelligent digital controller with RS485 Modbus RTU interface for BMS integration; supports setpoint adjustment (30–70% RH), real-time humidity/temperature logging, and alarm relay outputs
• Low-noise operation (≤60 dB(A) at 1 m), achieved via optimized fan blade geometry and acoustic insulation in the air handling chamber
• Self-cleaning water circuit with automatic drain flush cycle every 72 hours to prevent scale accumulation and biofilm formation
• UL/CE-certified electrical safety architecture including IP54-rated control panel, thermal overload protection, and dry-run pump safeguard

Sample Compatibility & Compliance

The QS-15 is designed for installation within Class A/B HVAC systems serving environments governed by stringent environmental controls—including TIA-942 Tier III/IV data centers, ISO/IEC 17025-accredited calibration labs, and GMP-compliant electronics manufacturing facilities. It meets EN 13779:2007 requirements for indoor air quality in non-residential buildings and complies with ASHRAE Standard 127-2020 for performance rating of humidifiers. While not classified as medical device or pharmaceutical-grade equipment, its closed-loop hydronics design and non-aerosolized output make it suitable for use in ISO 14644-1 Class 8 cleanrooms where particle generation must remain below 3,520,000 particles/m³ (≥0.5 µm). All wetted components are FDA-compliant food-grade polypropylene or 304 stainless steel; no copper or zinc alloys contact process water.

Software & Data Management

The embedded controller records timestamped humidity, inlet/outlet air temperature, pump runtime, and fault codes for ≥30 days. Data export is supported via USB-C dump or optional Ethernet/Wi-Fi gateway (ZEDO CloudLink Module), enabling compliance with ISO 9001:2015 clause 8.5.1 (Control of production and service provision) and facilitating audit-ready traceability. Optional firmware update path supports future integration with ISO/IEC 27001-aligned cybersecurity protocols. No proprietary cloud subscription is required; local storage adheres to GDPR and CCPA data minimization principles.

Applications

• Data center and telecom infrastructure: Prevents electrostatic discharge (ESD) events (>3 kV threshold maintained at 40–55% RH per ANSI/ESD S20.20)
• Print & prepress facilities: Stabilizes paper moisture content to ±0.5% to avoid registration drift and ink bleeding
• Calibration laboratories: Maintains ASTM E509-22 specified RH stability (±2% over 24 h) for dimensional metrology
• Museums & archival repositories: Complies with CEN/TS 16874:2016 guidelines for hygrothermal preservation of organic artifacts
• High-bay electronics assembly lines: Supports IPC-A-610 Class 3 soldering process windows requiring <60% RH to inhibit flux residue hygroscopicity

FAQ

What maintenance intervals are recommended for the evaporative media?
Media replacement is advised every 12 months under continuous operation, or after 6,000 operating hours—whichever occurs first—as validated by ZEDO’s accelerated aging tests per ISO 4582. Visual inspection for discoloration or channeling should occur quarterly.
Can the QS-15 operate with softened or deionized water?
Yes; however, conductivity below 50 µS/cm may reduce auto-detection sensitivity in the water level sensor. Use of municipal potable water (150–500 µS/cm) is optimal for long-term sump corrosion resistance and pump seal longevity.
Is condensate drainage required during operation?
No—this is a zero-drain evaporative system. Excess water returns to the sump via gravity; no external drain connection is needed unless used in humidification-only bypass mode.
Does the unit support integration with building automation systems (BAS)?
Yes, via native Modbus RTU (RS485) with configurable register mapping. BACnet MS/TP and LonWorks gateways are available as field-installable options.
What is the expected service life under industrial duty cycles?
Rated for 20,000 hours MTBF (Mean Time Between Failures) per IEC 61508, assuming ambient operating temperature ≤35°C and annual preventive maintenance per ZEDO Service Bulletin QH-2023-07.