Brabender Aquatrac Station Residual Moisture Measurement
The Brabender AQUATRAC® Station Dew point measurement in a vacuum: highly precise, robust and reproducible- NO REAGENTS,CARRIER GASES OR CONSUMABLES!
The revolutionary new feature of the AQUATRAC® Station is it’s measurement principle: Residual moisture analysis via dew point measurement. It is a well-known fact that moisture calculations using analysis scales (so-called gravimetric analysis using halogen or infrared lamps) can be erroneous: These processes tend to also measure other sample components such as additives and therefore tend to overestimate the water content. It is also well-known that chemical processes such as Karl Fischer titration are too labour-intensive for quick residual moisture analysis on the hectic workshop floor. The AQUATRAC® Station now brings the existing Brabender measurement technology®, dew point measurement, as a highly precise process for residual moisture calculations that operates completely without reagents.
The dew point is defined as the temperature at which the humidity contained in the air separates out onto a cold surface. Dew point measurement with capacitive sensors is very precise and the dew point is physically precisely linked to the air water content. All that is missing is the gas temperature: the AQUATRAC® Station uses these two values to calculate the absolute air humidity in the test tube and from this the precise water content of the sample.
The AQUATRAC® Station uses a vacuum and high temperatures to withdraw the water from the sample very effectively and quickly. The vacuum not only creates a high concentration gradient between the sample and the gas, which ensures that the water contained in the sample fully evaporates from the material. It also ensures that the water from the sample cannot come off the device’s pipe walls – whose components include selected hydrophobic (i.e. water-repellent) materials whose water vapour desorption rates are well known and taken into account in the measurement analysis. At the same time, the vacuum increases analysis precision because the saturation vapour pressure and dew point temperature are exponentially linked.
Brabender Messtechnik also produce a more portable instrument which uses a chemical method. Please follow the link below.
AQUATRAC Station – Specifications
Measurement principle / test methods: Dew point measurement / Precise residual moisture calculation, temperature scan
Sample weight / sample volume 0,05 – 20 g dependent on the expected residual moisture proportion / max. 50 cm3
Resolution 0,01 mg / 1 ppm / 0,0001 % H2O
Precision better than +/- 0,6mg of measuring range end value
Measuring range 0,0001 – 15 % H2O (relative) / 0,01 – 15 mg H2O (absolute)
Measuring temperatures 30 – 160 °C in steps of 1 °C
Measuring time Approx. 10 – 60 min. depending on material
Display %, ppm, mg
Interfaces 3 × USB 2.0, 1 × Ethernet
Power supply 85 – 265 VAC / 50/60Hz / max. 600W
Calibration Multi-point calibration according to DIN EN ISO 15512
Operating temperature 10 – 45 °C
Air humidity 5 – 95 % non-condensing
Protection class IP20
Dimensions (W x D x H) / Weight 562 × 404 × 275 mm / 27,6 kg
