Portable Water Activity Meter Operating on the ERH water activity testing principle, this device measures water activity by detecting the equilibrium state between the surface of a hydrated material and the surrounding ambient gas. It measures water activity within 5-10 minutes with an accuracy of ±0.015 aw. Featuring a built-in lithium battery, it is highly portable for quality control personnel to carry and use anytime, anywhere. Manufacturing facilities without dedicated laboratories can also utilize it for rapid testing.
Compact and portable for easy carrying.
Fast measurement speed, typically requiring only 5-10 minutes for standard samples.
Access measurement history anytime.
Choose between two measurement modes: automatic or timed (1-120 minutes).
Features high-precision sensors imported from the USA for superior accuracy and stable performance.
Touchscreen operation with adjustable backlight brightness for intuitive human-machine interaction.
Multi-point calibration ensures enhanced measurement accuracy.
Includes time setting and factory reset functions.
Measurement Range | 0.030-1.000aw |
Resolution | ±0.001aw |
Accuracy | ±0.020aw |
Sensor | High-precision imported sensor |
Temperature resolution | ±0.1℃ |
Measurement Time | Typically 5-10 minutes for standard samples |
Measurement Chamber | Ultra-quiet circulating measurement chamber |
Measurement Method | Automatic and Timed (National Standard Method) |
Calibration | Two-point calibration (NaCl standard salt solution and MgCl₂ standard salt solution) |
Sample Dish | Dedicated |
Storage History | 500 entries |
Time Setting & Factory Reset Function | Available |
Operating Environment | Temperature 0-50°C, Humidity 0-70% RH |
Power Supply | 4×1.5V AA batteries (high-capacity) |
Dimensions & Weight | 240×105×35mm, 600g |