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Humimeter RH2 water activity meter
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Aw measuring range: 0.03 to 0.99 aw
RH2 control 12005 Included
Specifications:
| Application | Moisture Determination | Warranty | 1 Year |
| Storage Temperature | Ambient | ||
| Product Type | Portable Meters | ||
| Product Brand | Schaller Messtechnik | ||
| Product Grade | Laboratory grade | ||
Precise Measurement of aw Value, Relative Humidity, and Moisture Equilibrium in Food and Industrial Products
The humimeter RH2 is a high-precision laboratory-grade instrument designed for the accurate measurement of water activity (aw value), relative humidity, dew point, and equilibrium moisture content. With interchangeable sensor options—including a large-volume measuring chamber for bulk samples and a measuring cell for small-volume materials—the RH2 is ideal for diverse food products such as meat, butter, spices, dried fruit, xylitol, mushrooms, and granules.
Conforming to EN ISO 21807, the RH2 ensures compliance and traceability in food safety, shelf-life determination, and microbiological risk assessment. It supports fast equilibration, user-friendly operation, and multilingual data logging, making it indispensable for quality control, laboratory testing, and R&D environments.
Key Features & Benefits
- Wide aw Value Range: 0.000–1.000 with 0.001 resolution
- Fast & Stable: Long-term stable sensors and fast adjustment behavior
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Versatile Sensor Options:
- Large measuring chamber for bulk testing
- Replaceable measuring cell for small sample volumes
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Multifunctional Measurements:
- Water activity (aw)
- Relative & absolute humidity
- Dew point
- Equilibrium moisture content (wood/granules)
- Comprehensive Memory: Stores up to 10,000 measurements
- User-Friendly Design: Multilingual menu, online data transfer, and hold function
- Portable Format: Lightweight handheld device, ideal for lab and field use
- Standards Compliant: Meets requirements of EN ISO 21807 for water activity testing
Applications
- Food Safety & Shelf Life Analysis: Monitor aw values in meats, dairy, fruits, and baked goods
- Microbial Growth Risk Assessment: Prevent spoilage by identifying safe storage moisture levels
- Quality Assurance in Packaging: Ensure consistent moisture content for product integrity
- Research & Development: Ideal for experimental product testing in academic or industrial R&D
- Industrial Materials Testing: Suitable for granules, powders, plastics, and pharmaceutical ingredients
Specifications Table
| Parameter | Value |
|---|---|
| Water Activity (aw) | 0.000 to 1.000 (resolution: 0.001) |
| Relative Humidity (RH) | Sensor-dependent, resolution: 0.1% RH |
| Temperature | Sensor-dependent, resolution: 0.1 °C |
| Dew Point | –55 °C to +60 °C |
| Absolute Humidity | 0 to 130 g/m³ (resolution: 0.1 g/m³) |
| Equilibrium Wood Moisture | 2% to 30% (resolution: 0.1%) |
| Equilibrium Moisture (Granules) | Resolution: 0.01% |
| Dimensions | 145 × 75 × 30 mm |
| Weight | 210 g (with batteries) |
| Power Supply | 4 × 1.5 V AA Alkaline batteries |
| Menu Languages | EN, DE, FR, ES, IT, CZ, PL, RU, PT, International |
| Data Logging | 10,000 records, online & hold function included |
How It Works
- Fill the sample chamber with the material to be tested.
- Wait for moisture equilibrium (typically 5 minutes to 1 hour, depending on the sample type).
- Once the displayed aw value is stable (variation < 0.002 over 10 minutes), record the result.
- For calibration, use certified ampoule solutions and follow the provided instructions or video guide.
Typical Sample Materials
- Food Products: Meat, butter, dried fruit, spices, chocolate, grains, cereals
- Raw Materials: Granules, xylitol, mushrooms, nuts
- Industrial Products: Plastics, powders, PVC compounds
The humimeter RH2 Water Activity Meter is a precise, professional solution for monitoring moisture-related quality and shelf life parameters in foods and industrial products. With a robust design, high-resolution sensors, and convenient user interface, it is the optimal tool for any laboratory or facility focused on water activity control and moisture-critical applications.