A professional, high-end laboratory unit for temperature-stabilized measurement of water activity in the foodstuffs, cosmetics, or pharmaceutical industries.
The wide control range permits measurements to be integrated directly in the tempered manufacturing or storage process. Water-activity measurement reacts very sensitively to variances in temperature. Stabilizing the temperature prevents imprecise results due to external temperature influences.
Exchangeable measuring head
A further advantage of AwTherm is that the measuring head is removable, which means that the probe can be temperature-calibrated or adjusted to give high precision.
- ROTRONIC HYGROMER® IN-1
- Highest precision through exact stabilization of temperature
- Wide temperature-control range
- Excellent reproducibility
- Excellent long-term stability
- Variable size of sample container
- Reference probe exchangeable for calibration or cleaning
- Quickest measurements with the AwQuick function
- Simple operation via Touch Interface
- Conforms to ISO 21807 / EMC 2008/108/EC / IEC EN 61010-1:2010
|Accuracy||±0,005 aw (10…30 °C) / ±0,1 °C (±0,18 °F)|
|Chamber-temperature gradient||<0,1 °C (<0,18 °F)|
|Operating range||1…40 °C (34…107 °F)|
|Sample container dimensions||AwT-PS14: Ø46 x 14 mm / AwT-PS40: Ø46 x 40 mm|
|Sample sizes||Variable (14 mm / 40 mm)|
|Device type||Temperature-stabilized water-activity measurement|
|Measuring range||0.005…1.000 aw|
|Temperature-control range||0…60 °C (32…140 °F)|
|Temperature stability||±0,01 °C/min (±0,018 °F/min)|
|Calibration / adjustment||Aw & Temperature: HG2-S (probe removed with AwT-CAL)
Aw: ROTRONIC humidity standards (via HW4)
|Dimensions||400 x 180 x 180 mm|
The free water in a product influences its microbiological, chemical and enzymatic stability. If there is too much free water present, the products spoil; too little water can be detrimental to the product characteristics.
|aw = 0.91..0.95||Many bacteria|
|aw = 0.88||Many yeasts|
|aw = 0.80||Many mildews|
|aw = 0.75||Halophile bacteria|
|aw = 0.70||Osmiophile yeasts|
|aw = 0.65||Xerophile mildew|