The PCE-WAM 10 is a portable humidity detector designed for measuring water activity, which indicates the bioavailable water for microorganisms in various substances. It’s particularly useful in the food industry for shelf-life testing. The device has a measurement range of 0.01 to 1 aw with an accuracy of ±0.03 aw. It includes 3 sample trays for convenience and operates on 2 AAA batteries.
Each type of microorganism has a minimum water activity value below which no growth is possible. The higher the aw value of a food, the more perishable it is. Bacteria typically require a water activity of over 0.98, but significantly lower water activity of up to 0.6 can be tolerated by extremely halophilic bacteria, for example.
| Water Activity | |
| Measurement Range | 0.01 aw … 1 aw |
| Resolution | ±0.01 aw |
| Accuracy | 0.03 aw |
| Temperature | |
| Measurement Range | 0 °C … 50 °C |
| Resolution | 0.1 °C |
| Accuracy | ±1 °C |
| General Technical Data | |
| Display Type | LCD |
| Sensor | Non-conductive moisture sensor |
| Battery Type | AAA Battery (1.5V) |
| Menu Language | English |
| Protection Class | IP20 |
| Weight | 244 g / 0,5 lb |
| Device Weight with Accessories | 930 g / 2 lb |
| Device Weight with Packaging | 980 g / 2.1 lb |
| Dimensions (L x W x H) | 150 x 68 x 68 mm / 5.9 x 2.6 x 2.6 inch |
| Additional Dimensions | Inner diameter of sample trays: 33mm / 1.2 inch |
| Operating Conditions | 0 … 50 °C, 0 … 95% r.H. |
| Storage Conditions | 0 … 50 °C, 0 … 95% r.H. |
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