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Product Details
Product Introduction
The HM-DK1 Headspace Gas Analyzer is a compact handheld instrument engineered for precise residual oxygen measurement inside sealed packaging. Manufactured by HM Instruments (恒美智造), this analyzer employs a high-performance electrochemical O₂ sensor with 0.01% resolution and ±0.2% accuracy, delivering reliable readings within 15 seconds. Its built-in pump suction sampling system extracts less than 5 ml of gas per test, preserving package integrity while ensuring fast, repeatable results.
Designed for production-line and laboratory environments alike, the HM-DK1 features one-button operation, automatic data storage for up to 2000 test records, and USB data export for seamless quality reporting. The 3000 mAh rechargeable lithium battery provides approximately 8 hours of continuous use, and the Chinese-English one-click language switch supports multilingual operators. An optional CO₂ infrared sensor module extends the instrument's capability for modified atmosphere packaging (MAP) analysis.
Applications
- Packaging Bags: Coffee, cheese, milk tea, milk powder, bread, MAP trays, instant food pouches, pharmaceutical blister packs
- Packaging Containers: Canned coffee, canned milk powder, canned food, Tetra Pak cartons, bottled beverages
- Extended Use: Ampoule headspace O₂ testing for injectable pharmaceuticals
- Quality Laboratories: Incoming material inspection, shelf-life studies, packaging process validation
Functional Performance
- Handheld Ergonomic Design: Weighing only 450 g with a 180×106×80 mm footprint, the HM-DK1 fits comfortably in one hand for effortless single-handed operation on busy production floors.
- Electrochemical O₂ Sensor: Imported brand sensor delivers 0–100% full-range measurement with 0.01% resolution and ≤±0.2% accuracy, maintaining stable performance over a 2-year service life.
- Optional CO₂ Infrared Module: NDIR infrared absorption sensor covers 0–100% CO₂ with ±(0.03%+5% of indicated value) accuracy and >15-year lifespan for long-term MAP analysis.
- Built-in Pump Suction Sampling: Internal micro-pump draws gas automatically, requiring less than 5 ml sample volume for O₂ and less than 15 ml for CO₂, minimizing sample disturbance.
- Quick-Insertion Needle Protective Sleeve: Patented sleeve design shields the sampling needle between tests, preventing contamination and accidental punctures during transport.
- One-Button Operation and Calibration: Single-key start for measurement, two-point calibration, and data recall — no complex menu navigation required.
- Chinese-English One-Click Switch: Toggle the entire interface between Chinese and English instantly, supporting bilingual production teams and export documentation.
- Automatic Storage and Power-Off Memory: The instrument saves results automatically after each test and retains all data when powered off, eliminating data loss risk.
- 2000-Group Circular USB Storage: Circular buffer stores up to 2000 test records; USB interface enables fast data export to PC for statistical analysis and audit reporting.
- 3000 mAh Lithium Battery: High-capacity rechargeable battery supports approximately 8 hours of continuous testing, covering a full production shift without interruption.
- Auto Shutdown: Configurable auto power-off conserves battery when the instrument is idle, extending operational time between charges.
- Optional Bluetooth Printer: Wirelessly connect to a portable Bluetooth thermal printer for instant on-site test report output without a PC.
Main Parameters
| Parameter | Specification |
|---|---|
| Model | HM-DK1 |
| O₂ Sensor Type | Electrochemical |
| O₂ Measurement Range | 0–100% |
| O₂ Resolution | 0.01% |
| O₂ Accuracy | ≤±0.2% |
| O₂ Response Time | ≤15 s |
| O₂ Sampling Volume | <5 ml |
| O₂ Sensor Lifespan | ~2 years |
| CO₂ Sensor Type (Optional) | Infrared absorption (NDIR) |
| CO₂ Measurement Range | 0–100% |
| CO₂ Resolution | 0.01% |
| CO₂ Accuracy | ±(0.03%+5% of indicated value) |
| CO₂ Response Time | ≤20 s |
| CO₂ Sampling Volume | <15 ml |
| CO₂ Sensor Lifespan | >15 years |
| Sampling Method | Built-in pump suction |
| Calibration Intake Pressure | 700–1500 mbar (abs.) |
| Calibration Method | Two-point calibration |
| Data Storage | 2000 sets, circular storage |
| Data Transmission | USB interface |
| Battery | 3000 mAh rechargeable lithium |
| Working Temperature | 0–40 °C |
| Operation Language | Chinese-English one-click switch |
| Size | 180×106×80 mm |
| Weight | 450 g |
| Reference Standard | JJG 365-2008 |
Expert Review
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