Xylem WQ-FDO User Manual

Global Water

800-876-1172 • globalw.com

Global DO Monitor Software Manual

For Use With WQ-FDO Sensor and

GL500-7-2 Data Logger

Global Water

Instrumentation, Inc.

151 Graham Road

P.O. Box 9010

College Station, TX 77842-9010

T: 800-876-1172

Int’l: [phone], Fax: [phone]

E-mail : [e-mail]

02-095
Publication Number 39360712

- 1 -

Global Water

800-876-1172 • globalw.com

Congratulations on your purchase of a Global Water WQ-FDO Dissolved
Oxygen Sensor and GL500 Data Logger. These instruments have been
quality tested and approved for providing accurate and reliable
measurements. We are confident t hat you will find the logger to be a
valuable asset to your applications. Should you require assistance, our
technical staff will be happy to help.

Table of Contents

I. Overview ▫ ▫ ▫ ▫ ▫ 3
II. System Requirements ▫ ▫ ▫ 3
III. Software and Driver Installation ▫ ▫ 4
IV. Direct Connection ▫ ▫ ▫ ▫ 7
V. Modem Connection ▫ ▫ ▫ ▫ 9
VI. Main Screen ▫ ▫ ▫ ▫ ▫ 11
VII. On-Line Help Files ▫ ▫ ▫ ▫ 15
VIII. Get History ▫ ▫ ▫ ▫ ▫ 16
IX. Setup Menus ▫ ▫ ▫ ▫ ▫ 17
X. General Setup ▫ ▫ ▫ ▫ ▫ 18
XI. Analog Setup ▫ ▫ ▫ ▫ ▫ 21
XII. Digital Setup ▫ ▫ ▫ ▫ ▫ 24
XIII. DO Setup ▫ ▫ ▫ ▫ ▫ 26
XIV. Programming ▫ ▫ ▫ ▫ ▫ 29
XV. Connections ▫ ▫ ▫ ▫ ▫ 30
XVI. Modem C able Diagrams ▫ ▫ ▫ 31

XVII. Maintenance ▫ ▫ ▫ ▫ ▫ 32
XVIII. Troubleshooting ▫ ▫ ▫ ▫ 32
XIX. Cust om er Support ▫ ▫ ▫ ▫ 34

Copyright  Global Water Instrumentation, Inc. 2012

- 2 -

Global Water

800-876-1172 • globalw.com

I. Overview

The Global DO Monitor software is an enhanced vers ion of the Global Logger II data
logger interface; and used to conver t dissolved oxygen partial pressure and
temperature, along with conduct iv ity and atmospheric pressure, into DO
concentration and saturation. Calc ulating dissolved oxygen concentration and
saturation can be complicated; t hes e v alues are dependant on the partial pressure of
oxygen, temperature, conductivity or salinity, and atmospheric pressure or altitude.
All of these parameters are required to acc ur ately determine concentration and
saturation levels under all conditions.

This software is intended for use wit h the G lobal Water WQ-FDO sensor and the
GL500-7-2 Data Logger. The WQ-FDO sensor provides two 4-20mA outputs whic h
are proportional to oxygen partial pressur e and water temperature. Optionally the
WQ-COND Conductivity Sensor and the WE100 Barometric P ressure Sensor can be
connected to the logger to provide all the nec es s ar y data needed to calculate the
concentration and saturation levels. If conductivity and atmospheric pressure ar e
constant, and these values are known, pr ov is ion is m ade to manually enter these
values instead of connecting the optional s ens or s . Any or all of these 4 sensor
parameters can be displayed and downloaded to a spreadsheet. The software uses
these parameters to calculate concent r ation, saturation, and salinity; and these
calculated values can also be displayed and dow nloaded as needed. All other
features of the Global Logger II soft war e are also supported.

II. System Requirements:

Desktop or Lapto p c o m put e r wit h:

1) W indows 98, ME, 2000, XP, Vista or Windows 7 Operating Systems

2) CDROM Dr ive

3) RS-232 or U S B P ort

Note that this software is for r unning on des k top and laptop computers only.

- 3 -

Global Water

800-876-1172 • globalw.com

III. Software and Driver Installation:

Global DO Monitor S o f twa r e Installation: This software is for use on Windows

based desktop and laptop computers only . Insert the software installation CD and
run the Setup program. This will install t he Global Logger application in the Program
Files folder and automatically put the Global Logger icon on the desktop.

Serial communication: If you are using the RS-232 serial port to access the data
logger, no further action is needed. Y ou c an s tart using the logger by opening the
Global Logger application program. If you plan to use the USB port, you must install
the driver. You may consider installing the driver now, even if you plan to use the
serial port.

USB Driver Installation: With the installation CD in the CDROM drive and DC
power applied to the logger, plug the USB c able into the data logger to open the
ADD New Hardware Wizard. The menus that follow will look dif ferent for different

operation systems but the procedure is the sam e. Do not allow the H a r dwa r e
Wizard to automatically search for the driver. Instead, specify the location
(CDROM). If a generic driver gets, or has been previously ins talled, it must be

uninstalled before proceeding by using the Add or R em ov e P r ogr ams section of the
Control Panel. Instead, click the S ear c h Ext er nal Media box or S pec ify a Location
box and install the driver from the CDROM. Running the Setup progr am that installs
the Global Logger software also installs a folder with the driver in it. This location
can also be specified if the CDROM is not available; alt hough, it is recommended
that the driver be installed at the same tim e the Global Logger is installed.

The following menus apply to the Windows X P operating s y s tem.

1) Do not let Windows search
for software. Click “No, not
at this time” when asked if
Windows Update can search
for software.

Click Next.

- 4 -

Global Water

800-876-1172 • globalw.com

2) Do not let Windows automatically
install the software. Click “Inst all
from a specific location”.

Click Next.

3) Specify the location of the driver.
Make sure the Global Logger CDROM
is in the CD drive and click “Search
removable media” only.

Click Next.

4) The Hardware Wizard searches
for the driver.

If Windows advises that the software
is not certified, click:

“Continue Anyway”.

- 5 -

Global Water

800-876-1172 • globalw.com

This only means that Microsoft has not
licensed the software. Second party
software is allowed and no harm will
come to your computer.

5) The first half of the installation is
complete. The Hardware Wizard
may need to make two passes.

Click Finish.

6) Two drivers are sometimes required so t he Hardware Wizard may repeat the
exact same process again. As before; a: do not let the W indow s Update do a
search, b: tell Windows to search from a specific location instead of automatically
installing software, c: tell W indows to search from removable media (CDROM).

7) The installation is complete.
Click Finish.

- 6 -

Global Water

800-876-1172 • globalw.com

8) To confirm the installation, look in the
Device Manager and find the USB Ser ial
Port. The COM setting following that will
show the virtual COM port that has been
automatically assigned to the driver . As
you will see in the following section, this
COM port will be automatically detect ed
by the Global Logger software so it is not
necessary to note which port is being
used by the driver.

IV. Direct Connection:

Important: This data logger supports an Auto Baud Rate Mode which automatically

detects the connecion speed. However; this communication software also
supports loggers which may be programmed in a Fixed Baud Rate Mode.
This is useful in telemetry applications, particularly when using Global Water
data loggers with our Global Access radio m odem software. The upcoming
discussion assumes that the logger is pr ogr ammed in auto detect mode. If
you cannot connect to the logger and suspect that the logger may be using a
fixed rate mode; try each connection speed separately, especially 38400
which is required when using the Global Acces s s oftware.

- 7 -

Global Water

800-876-1172 • globalw.com

There are 3 ways to connect to the GL500 data Logger, direc t connection through
the RS-232 serial port or USB port and dial out through an installe d m odem.

To make a direct connection to the logger, c lic k t he “Direct” option and from the
“Port” menu, select the port you wish to use. For USB access select the USB serial
port at the COM port the driver was assigned, whic h is automatically shown in the
list. Serial connection is generally done t hr ough the 9-pin COM1 connector although
COM2 can also be used. When an external modem or other device is assigned t o
COM1, the port can still be used for access ing the logger, but the external device
must be disconnected. Both the serial and US B port s c an be c onnec ted to the
logger at the same time but you must select which of them is to be used. No
difference will be noticed by the us er ex c ept while downloading historical data.
Because of the excessive handshaking done by the USB port, the serial port will run
about 50% faster at the same baud rate. Next, select the desired baud rate from the
“Baud Rate” menu. Generally, the fast es t rate of 115,200 is used although; long
cables or other factors may require a slower setting. Click “Connect” to make the
connection. If a connection is not made, a message will appear. Check the power
connection, communication cable, dr iv er ins tallation and COM port settings.

- 8 -

Browse

Global Water

800-876-1172 • globalw.com

V. Modem Connection:

Access to the GL500 can be made through dial-out to a remote modem by clicking
the “Modem” option. The connection from modem to logger requires an RS-232
serial modem, USB modems are not support ed as an interface to the logger. Also,
some switch settings must be made to the remote m odem and an initialization string
may be required to properly configure the hos t modem.

Two baud rates are supported 9600 and 19200. Should you ex per ienc e difficulty
establishing a reliable connection at 19200, use the slower connection speed. N ote
that due to the slower baud rates and the additional hands haking performed during
modem communication, The Global Logger s oftware will operate significantly slower
than during a direct connection.

The Global Logger software will remember the las t 4 numbers dialed and has a
provision for using a stored text file (.txt extension) for initialization of the hos t
modem using standard AT commands. Some experience may be r equir ed to
configure your modem but a sample comm and file and some useful tips follow.

Select the baud rate

Ty pe in or find the phone number

Use init ializ ation file

Select the modem’s COM port

- 9 -

Global Water

800-876-1172 • globalw.com

Sample initialization text file:
This is for reference and applies to
an external US Robotics modem only.

ATM1 ; speaker off when connects
AT&B1 ; fixed serial port rate
AT&D2 ; normal DTR
AT&H1&R2 ; h/w flow control

Connect 19200

AT&I0 ; disable s/w flow control
AT&K0 ; disable compression
AT&M4 ; normal error control

Select the COM port for your modem
and the baud rate. Type in the phone
number or select it from the list of pre­stored numbers. If necessary, clic k the “Use I nitialization File” box and use
the browse button to search for t he initialization text file for your modem. Click
“Connect” and the software will dial out, s how ing the status screen shown above.
Once a connection is established, “Connect ” wil l appear for a few seconds along with
the baud rate of the connection. After c onnec ting, the normal Global Logger screen
will appear and operate exactly as if a direct c onnection was m ade. All options and
features work the same but at a reduced communicat ion s peed.

When connecting the GL500 Data Logger to an external modem, a special cable is
required. Wiring diagrams are provided at the end of this manual and pre-wired
cables are available from Global W ater. The remote modem is configured by setting
DIP switches. They should be set to auto-answer on, DTR Normal, carrier detect
normal and smart mode. Global Water can provide ext er nal m odems and interface
cables at an additional cost if requested. Contact our sales department for more
information.

It may not be necessary to use an initializat ion s tring to configure the host modem
but if problems arise the modem should be set with software handshaking off (Xoff),
DTR normal, fixed baud rate, compression of f and error correction on. This
configuration is done by building an init ializ ation file using the standard AT
commands and loading it into the connection screen. Global Water suggests that
you test the modems operation before installing in the field.

- 10 -

Global Water

800-876-1172 • globalw.com

VI. Main Screen:

The main screen is where the status and option menus ar e ac c es s ed. The GL500
data logger will continue to log at norm al intervals while connected to the Global
Logger software. While connected, t he logger will draw an addition current from the
power supply of 5-10mA so it is advised that, if you are operating on battery power
and plan not to access the logger for extended periods of time, you disconnect from
the logger to increase battery lif e. I nterface cables may remain connected. To
disconnect, click on the “Disconnect” button. The label on this button will change to
“Connect” and clicking on it will return y ou to the connection screen as previously
discussed.

The functions and information in this sc r een are disc us s ed in the following sections.

- 11 -