Water Activity Meter

Using temperature and humidity method

Introduction

Features

Specifications

Compliance

Applications

Inquiry

Water activity meter AW01-TH is based on the temperature and humidity method.

Widely used in pharmaceuticals, food, and other fields to ensure that the risk of microbial contamination in products is controllable.

Compliant with 21CFR part 11

Strong Storage Capacity: over 10 years

Fast testing speed: rapid and precise temperature control, reducing testing time to within 4 minutes

Features

Working Principle:

The sample is placed in a sealed space. Under constant temperature conditions, when the vapor pressure of the sample and the surrounding air reach equilibrium, the water vapor pressure of the gas space is taken as the sample vapor pressure. That is, the decimal form of the relative humidity of the air in the top space of the sample chamber is the water activity of the sample.

Mirror Condensation Method： Traceable to international/national basic methods, traceable to the international basic measurement units (SI units)”United States Pharmacopoeia'<1112>recommended methods.
Strong Storage Capacity: Records test temperature, time, and sample information, and can store data for more than 10 years.
High Accuracy: ±0.003aw, making the instrument more accurate.
Data Integrity: Compliant with 21CFR part 11, 3-level user access, audit trails, and various forms of backup.
Low Maintenance Cost: Cheap consumables and no need for cumbersome and time-consuming sensor calibration.
Fast Test Speed: Standard equipped with active temperature control module, fast and precise temperature control, shortening detection time to within 6 minutes.

Specifications

Test Range:	(0-1.000)aw
Max. Allowable Error:	±0.02aw
Resolution:	±0.0001aw
Repeatability Error:	≤5%
Test Time:	≤30min
Temperature Control Range:	(10-50)℃
Temperature Control Accuracy:	±0.2℃
Environment:	Temperature (4-50)℃, (10%-85%)RH (non-condensing)
Sample Temperature:	(10-50)℃ accuracy ±0.2℃, resolution 0.01℃
Input Power:	(100~240)±10%VAC, 50/60Hz
Power:	≤100W
Sample Cup Capacity:	7mL
Data Storage:	More than ten years of storage period (depending on the size of the memory, each group includes water activity, temperature, time, date, operator and sensor type)