Xylem WQ-FDO Sensor and GL500-7-2 Data Logger - Manual (Page 3)

Global Water
800-876-1172
• globalw.com
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I.
Overview
The Global DO Monitor software is an enhanced version of the Global Logger II data
logger interface; and used to convert dissolved oxygen partial pressure and
temperature, along with conductivity and atmospheric pressure, into DO
concentration and saturation. Calculating dissolved oxygen concentration and
saturation can be complicated; these values are dependant on the partial pressure of
oxygen, temperature, conductivity or salinity, and atmospheric pressure or altitude.
All of these parameters are required to accurately determine concentration and
saturation levels under all conditions.
This software is intended for use with the Global Water WQ-FDO sensor and the
GL500-7-2 Data Logger. The WQ-FDO sensor provides two 4-20mA outputs which
are proportional to oxygen partial pressure and water temperature. Optionally the
WQ-COND Conductivity Sensor and the WE100 Barometric Pressure Sensor can be
connected to the logger to provide all the necessary data needed to calculate the
concentration and saturation levels. If conductivity and atmospheric pressure are
constant, and these values are known, provision is made to manually enter these
values instead of connecting the optional sensors. Any or all of these 4 sensor
parameters can be displayed and downloaded to a spreadsheet. The software uses
these parameters to calculate concentration, saturation, and salinity; and these
calculated values can also be displayed and downloaded as needed. All other
features of the Global Logger II software are also supported.
II.
System Requirements:
Desktop or Laptop computer with:
1) Windows 98, ME, 2000, XP, Vista or Windows 7 Operating Systems
2) CDROM Drive
3) RS-232 or USB Port
Note that this software is for running on desktop and laptop computers only.