| Sensor type | Chilled-mirror dewpoint; capacitance sensor; infrared temperature |
|---|---|
| Water activity | Range: 0.030–1.000 aw |
| Temperature | Range: 15-50 °C |
| Measurement time | Less than 5min |
| Sample cup capacity | 7mL recommended (15mL full) |
| Display | 64 × 128 graphical |
| Data communications | USB A and RS-232 serial |
| Case dimensions | Length: 26.7cm |
| Case material | POLYLAC PA-765 (ABS) with fire retardant |
| Weight | 3.1kg |
| Operating temperature | 4°C to 50°C |
| Operating environment | 0 to 90% relative humidity (noncondensing) |
| Universal power | 110V to 220 VAC |
| Compliance | Manufactured under ISO 9001:2015 |
METER Aqualab 4TEV, Benchtop Water Activity Meter
In addition to the standard dew point sensor, the Series 4TEV has a hygroscopic polymer capacitance sensor that can be used to measure the water activity of samples containing volatiles. You can switch between sensors using the instrument menu. The capacitance sensor is less accurate (± 0.015 aw) than the dew point sensor (± 0.003 aw).
For samples containing volatiles: 4TEV and AQUALAB TDL
The Series 4TEV is best for customers who occasionally need to measure samples that contain volatile ingredients in low concentrations. If the product itself is volatile (soy sauce, alcohols, flavorings, black tea) or contains a high concentration of volatiles (flavored teas, sauces and seasonings), the laser sensor in the AQUALAB TDL is a better option.
