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Section 3 – Operational Qualification (OQ)
This section describes tests that are to be executed for Operational Qualification of the AquaLab Water
Activity instrument in order to prove proper operation of the installed instrument.
3.1 Hardware testing
Display is functional
Keypad is functional
Remarks:
N/A
Qualified by:
Date:
3.2 System Information
AquaLab Water Activity Instrument Information
Manufacturer:
Model Number:
Serial Number:
Firmware Version:
3.2.1 Sensor Verification
The AquaLab Series 4 line of instruments contain a chilled mirror dewpoint sensor for
determining water activity. The 4TEV model contains both the chilled mirror sensor and a
capacitance relative humidity sensor. The performance of the sensors is verified by measuring
specially prepared calibration standards that have a specific molality and water activity.
Performance Verification Standards in four water activity levels are used for qualification:
0.250, 0.500, 0.760, 1.000 aw. The AquaLab dew point sensor will read each standard within
+/- 0.003 aw of the stated value. The capacitance (volatiles) sensor will read each standard
within +/- 0.015 aw of the stated value. To measure the water activity of the standards, follow
the instructions in the User's Manual for taking a reading.
Yes
Yes
Initials:
Decagon Devices, Inc
No
No
June 28, 2016 11:24 AM
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