Zhonghuipu TH-2000 High-Purity Hydrogen Generator
| Brand | Zhonghuipu |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Model | TH-2000 |
| Hydrogen Generation Principle | Pure Water Electrolysis |
| Output Flow Rate | 0–2000 mL/min |
| Output Pressure | 0–0.4 MPa |
| Hydrogen Purity | 99.999% |
| Power Consumption | 900 W |
| Dimensions (L×W×H) | 590 × 360 × 540 mm |
| Net Weight | ~35 kg |
| Pressure Stability | < 0.001 MPa |
| Input Power | 220 V ±10%, 50 Hz |
| Certifications | CE |
Overview
The Zhonghuipu TH-2000 High-Purity Hydrogen Generator is an on-demand, membrane-based electrolytic hydrogen source engineered for continuous, stable supply in analytical laboratories. It employs proton exchange membrane (PEM) electrolysis of deionized water—eliminating the need for caustic potassium hydroxide solutions—and delivers ultra-high-purity hydrogen (99.999%) at flow rates up to 2000 mL/min and pressures up to 0.4 MPa. Unlike traditional alkaline electrolyzers, the TH-2000 integrates a solid polymer electrolyte (SPE) cell with integrated oxygen scavenging, enabling immediate start-up without catalyst activation or periodic regeneration. Its design prioritizes operational safety, long-term stability, and compatibility with sensitive gas chromatography (GC) detectors—including nitrogen-phosphorus (NPD) and flame photometric (FPD) detectors—through low-sulfur internal wetted materials and multi-stage desiccation.
Key Features
- PEM-based pure water electrolysis: Uses only deionized water as feedstock; no KOH handling, no corrosion risk, no liquid electrolyte management.
- Integrated oxygen removal: Built-in catalytic oxygen scavenger eliminates residual O2 without external activation or consumable replacement.
- Low-humidity output: Multi-stage adsorption drying system reduces dew point to ≤ –40 °C, minimizing moisture-related baseline drift in GC-FID/NPD/FPD applications.
- Intelligent microprocessor control: Real-time monitoring of flow, pressure, temperature, and water level; automatic shutdown on low water or over-pressure conditions.
- Stable pressure regulation: Maintains output pressure within ±0.001 MPa under dynamic load changes—critical for carrier gas consistency in GC method transfer and validation.
- Low-sulfur fluid path: All wetted components utilize sulfur-free elastomers compliant with ASTM D4827 and ICH Q5C specifications for trace-gas-sensitive detection.
Sample Compatibility & Compliance
The TH-2000 is designed for direct integration into laboratory gas networks supporting GC, GC-MS, and hydrogen-fueled fuel cells. Its 99.999% H2 purity meets ISO 8573-1 Class 1.2.1 (gaseous contaminants) and ASTM D7613 requirements for high-resolution chromatographic carrier gases. The absence of alkali carryover and sulfur leaching ensures compatibility with electron-capture (ECD), NPD, and FPD detectors—where even sub-ppb contamination can compromise sensitivity and reproducibility. The unit complies with CE marking directives (2014/30/EU EMC, 2014/35/EU LVD) and conforms to IEC 61010-1 for laboratory electrical safety. While not explicitly validated per FDA 21 CFR Part 11, its embedded event logging (power-on cycles, alarm triggers, shutdown events) supports GLP/GMP audit trails when paired with external data acquisition systems.
Software & Data Management
The TH-2000 operates via an embedded single-board controller with a backlit Chinese-language LCD interface—no PC software required for basic operation. All operational parameters (flow setpoint, actual pressure, water level status, runtime hours) are displayed in real time. Critical events—including low-water alarms, over-pressure cutoffs, and thermal protection activation—are timestamped and retained in non-volatile memory for up to 1000 cycles. For labs requiring electronic record retention, analog 0–5 V or 4–20 mA output signals (optional) enable connection to SCADA or LIMS platforms. Remote monitoring via RS-232 or Modbus RTU (firmware upgrade required) supports centralized gas supply management in multi-instrument environments.
Applications
- Carrier and fuel gas for GC-FID, GC-NPD, GC-FPD, and GC-TCD systems
- Hydrogen supply for portable fuel cells and electrochemical sensors
- Reducing atmosphere generation in small-scale thermal analysis (TGA, DSC)
- Calibration gas blending systems requiring high-purity H2 as primary component
- On-site hydrogen sourcing for laboratories seeking to eliminate high-pressure cylinder logistics, storage hazards, and regulatory burdens associated with compressed gas inventory
FAQ
What type of water must be used?
Deionized water with resistivity ≥ 15 MΩ·cm (ASTM Type I) is mandatory. Tap water, distilled water, or reverse-osmosis-only water will cause rapid membrane fouling and irreversible performance loss.
Does the TH-2000 require periodic maintenance beyond water refills?
Yes. The oxygen scavenger cartridge has a service life of approximately 12 months under continuous operation at 1500 mL/min; replacement is required to maintain 99.999% purity. Desiccant columns should be regenerated or replaced every 6 months depending on ambient humidity.
Can it be used with GC-MS systems?
It is not recommended as the sole hydrogen source for GC-MS ion sources due to potential trace moisture and organic volatiles from internal seals; consult your MS manufacturer for compatibility verification and consider supplemental purification (e.g., heated metal hydride purifiers).
Is the output pressure adjustable during operation?
Yes. Pressure setpoint is continuously tunable from 0 to 0.4 MPa via front-panel controls or analog input, with closed-loop regulation maintaining stability within ±0.001 MPa across the full flow range.
How does it compare to alkaline electrolyzer-based generators?
The TH-2000 eliminates electrolyte circulation, pH monitoring, and KOH replenishment. It achieves faster start-up (<60 s), lower maintenance frequency, and inherently higher purity due to integrated O2 removal—without requiring post-electrolysis palladium purifiers.
