Specifications and Product Details:

Manufacturer's Link: http://www.testo.us/online/abaxx-?$part=PORTAL.USA.SimpleContentDesk&$event=show-from-menu&categoryid=2734198

Features:

User-friendly operation with cursor via menu structure
Clear graphics display
Saves or prints at the touch of a button
3 User defined function buttons
Barcode pen (optional)
Integrated reading memory up to 500,000 readings
Special advantage: automatic correction of absolute pressure foraccurate measurements. aw value measurement with trend display and automatic recognition of equilibrium.
3 user defined function buttons
Mains connection/fast recharging
Attachable printer (optional). Print readings in seconds on site
Data communication by PC
2 user defined probe sockets, automatic recognition of all connected probes

Includes:

0563 6501 - 650 Reference Meter / Logger
0636 9741 - 1% RH probe
0430 0143 - Probe connection cable
0554 6022 - 400/650 to Xmitter interface cable
0516 0400 - Service case

The testo 650 precision measuring instrument from the reference class has everything the professional user needs to complete complicated measurement tasks efficiently, accurately and conveniently. testo 650 includes the basic parameters humidity, temperature, pressure and you also have the option of measuring CO2, rpm, current and voltage.

Water activity is one of the most important parameters in respect of product quality in the food production sector.The aw value provides information on chemically non-bonded water. For this reason, it is an important parameter when determining the product quality in many foodstuffs. The water activity in food determines colour stability, taste and shelf life. Potential risks exist if the food has very high water activity and is not adequately refrigerated.

The testo 650 reference measurement system sets standards in aw value measurementAccuracy of measurement ±0.01 aw. Reproducibility of the measurement ±0.003 aw. The accuracy of the precision sensor has been proven in international interlaboratory tests!

The trend display in testo 650 automatically indicates when the equilibrium moisture has been reached and the measurement is complete. Constant monitoring is therefore not required.
Long-term stability of the measurement for years, i.e. frequent, time-consuming readjustments are no longer necessary.
Measuring system traceable to national standards. Supplied with DKD calibration certificate if required. This also gives assurance in legal questions.
Uncomplicated and reliable documentation of the measured results via attachable printer or on PC.