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The HM Instruments HM-ZHS2 online near-infrared moisture analyzer uses 7-band, 14-path optics for continuous moisture measurement of moving material on production lines. It is intended for materials with colour variation, dark surfaces, slight caking, mottled surfaces and mixed compositions.
Water absorbs near-infrared energy, particularly around 1.45 μm and 1.94 μm. Optical filters and photoelectric detectors convert the measured infrared response into a moisture percentage through a material-specific quantitative model.
HM-ZHS1 uses four bands and eight optical paths; HM-ZHS2 uses seven bands and fourteen optical paths. Use a material-specific calibration model for moisture measurement.
Key Features
- 7-band, 14-path optical configuration for the specified material conditions.
- Non-contact, non-destructive measurement of moving material on a conveyor.
- Dual detectors compare infrared signals to compensate for instrument drift.
- Multiple temperature sensors provide additional drift compensation and system monitoring.
- Built-in software supports creating, validating and maintaining quantitative models using representative samples.
- Wi-Fi or wired network connection uploads results to the manufacturer’s data platform, provided without an additional platform fee.
- Adjustable filtering range of 0–2.5%, with configurable response and collection intervals.
Applications
- Food processing: starch, flour, protein powder, milk powder, tomato powder, sugar, salt, monosodium glutamate, tea and food additives.
- Textiles and paper: fabrics, paper, paperboard and packaging paper.
- Wood and building materials: wood chips, boards, cement, concrete and mineral sand.
- Pharmaceuticals, feed and chemicals: granules, powders, grain powders, fertilizers and detergent powders.
For HM-ZHS2, assess colour variation, dark surfaces, slight caking, mottled surfaces and mixed compositions when selecting samples and establishing the calibration model. The material-specific measurement range and accuracy must be verified for the intended production process.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HM-ZHS2 |
| Optical configuration | 7-band, 14-path |
| Moisture range | 0–60%; material-dependent |
| Manufacturer-stated accuracy | ±0.1% to ±0.5%; material-dependent |
| Spot diameter | 60 mm at a 250 mm probe-to-material distance |
| Working distance | 250 ± 50 mm |
| Response time | 1–80 s, adjustable |
| Data collection interval | 1–120 min, adjustable |
| Probe protection rating | IP65 |
| Detection channels | 200 |
| Storage | 16 GB; up to 20,000 results |
| Light source | Halogen lamp |
| Probe material | High-boron quartz glass |
| Alarms | Low/high limits with alarm history |
| Interfaces | 4–20 mA interface, switch output and RS485 for secondary development |
| Power | ≤65 W |
| Mounting tube diameter | 25–32 mm |
| Probe dimensions / weight | 380 × 180 × 180 mm / 10 kg |
| Display unit dimensions / weight | 235 × 170 × 102 mm / 5 kg |
| Display / operating system | 7-inch touchscreen, 1024 × 600 pixels / Android 10 |
Configuration / Accessories
| Parameter | Specification |
|---|---|
| Display unit | 1 each |
| Probe | 1 each |
| Display-to-probe cable | 1 each |
| Power cable | 1 each |
| Instruction manual | 1 each |
| Certificate of conformity | 1 each |
| Stylus | 1 each |
| Warranty card | 1 each |
| 4 mm short hex key | 1 each |
Optional items listed by the manufacturer include a halogen moisture analyzer, pneumatic connector, mounting screws, connection cables and a positive-pressure optical-port cover. Confirm the required accessory configuration before ordering.
Related Models
HM-ZHS1 uses four bands and eight optical paths for uniform materials under routine conditions. HM-ZHS2 uses seven bands and fourteen optical paths to improve tolerance to complex surface changes. Compare HM-ZHS1 online near-infrared moisture analyzer when choosing the optical configuration.
Operation and Support
Install the probe at the specified working distance, collect representative material samples and establish a quantitative model using reference moisture values. Validate and maintain the model when material properties or process conditions change. Follow the instruction manual for installation and maintenance.
Product Enquiries
Contact our sales representative to discuss material suitability, calibration and configuration.
Sales Contact: Kyra
Email: Kyra@hmdzkj.cn
Tel / WhatsApp / WeChat: +86 13792642016
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