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HUMIMETER RH2 WATER ACTIVITY METER

HUMIMETER RH2 WATER ACTIVITY METER​


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Product detail

Humimeter RH2 – Water Activity & Moisture Meter

Precise Measurement of aw Value for Food Shelf-Life and Quality Control

Water activity (aw) indicates the amount of unbound (free) water in a material. It is a critical parameter in food preservation and quality assurance—for example, determining the shelf life of meat or other perishable goods. The aw value depends on the water vapor pressure inside the material, the current temperature, and the vapor pressure of the surrounding environment.

The Humimeter RH2 enables quick and easy measurement of water activity in food products. Two interchangeable sensor types are available for various applications:

  • Large-volume measuring chamber: Ideal for bulk samples, allowing faster analysis and the possibility of testing more representative sample sets.

  • Small-volume sample cell: Suitable for minimal sample quantities and supports sensor replacement, offering flexibility for different sample types.

This device is compatible with a wide range of products such as butter, fruit blends, spices, grains, PVC, mushrooms, xylitol, and more.

By using the Humimeter RH2 to monitor aw values, manufacturers can ensure and maintain food safety, shelf life, and quality.


Key Features:

  • Water activity measurement range: 0.03 to 0.99 aw

  • Resolution: 0.001 aw

  • Calibration range: 0.10 to 0.80 aw (±0.01 aw accuracy)

  • Long-term stable sensor technology

  • Very fast equilibrium process

  • Choice of measuring chambers based on sample size

  • 48-hour service support available


Technical Specifications:

Parameter Specification
Relative Humidity (RH) Sensor-dependent range, 0.1% RH resolution
Temperature Sensor-dependent range, 0.1 °C resolution
Dew Point -55 to +60 °C (–67 to 140 °F)
Absolute Humidity 0 to 130 g/m³, 0.1 g/m³ resolution
Equilibrium Moisture (Wood) 2 to 30%, 0.1% resolution
Equilibrium Moisture (Grains) High resolution: 0.01%
Water Activity (aw) 0.00 to 1.00, 0.001 resolution
Memory Functions Online, Hold function, Manual Data Logging
Automatic Data Logging Stores up to 10,000 values, with timestamp records
Dimensions 145 × 75 × 30 mm
Weight 210 g (with batteries)
Power Supply 4 × 1.5V AA alkaline batteries
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