Xylem GL500-2-1 User Manual

Global Water

800-876-1172 • globalw.com

GL500-2-1 Data Logger

Covers GL500U-2-1 and GL500S-2-1 Data Loggers

Global Water

Instrumentation, Inc.

11390 Amalgam Way

Gold River, CA 95670

T: 800-876-1172

Int’l: [phone], F: [phone]

[e-mail]

11/30/09
01-460

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Global Water

800-876-1172 • globalw.com

Congratulations on your purchase of a Global Water GL500-2-1 Data
Logger. This instrument has been quality tested and approved for
providing accurate and reliable measurements. We are confident that 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. Checklist ▫ ▫ ▫ ▫ ▫ 3
II. Inspection ▫ ▫ ▫ ▫ 3
III. Warranty ▫ ▫ ▫ ▫ ▫ 3
IV. Specification ▫

▫ ▫ ▫ ▫ 4

V. System Requirements ▫ ▫ ▫ 5
VI. Software Installation ▫ ▫ ▫ ▫ 5
VII. Direct Connection ▫ ▫ ▫ ▫ 8
VIII. Modem Connection ▫ ▫ ▫ ▫ 9
IX. Main Screen ▫ ▫ ▫ ▫ ▫ 12
X. On-Line Help Files ▫ ▫ ▫ ▫ 16
XI. Get History ▫ ▫ ▫ ▫ ▫ 17
XII. Setup Menus ▫ ▫ ▫ ▫ ▫ 18
XIII. General Setup

▫ ▫ ▫ ▫ ▫ 19

XIV. Analog Setup ▫ ▫ ▫ ▫ ▫ 22
XV. Digital Setup ▫ ▫ ▫ ▫ ▫ 25
XVI. Programming ▫ ▫ ▫ ▫ ▫ 27
XVII. Input Connections ▫ ▫ ▫ ▫ 28
XVIII. Modem Cable Diagram ▫ ▫ ▫ 29
XIX. Maintenance ▫ ▫ ▫ ▫ ▫ 30
XX. Troubleshooting ▫ ▫ ▫ ▫ 30
XXI. Customer Support ▫ ▫ ▫

▫ 31

XXII. CE Certification ▫ ▫ ▫ ▫ 32

Copyright © Global Water Inst rumentation, Inc. 2006

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I. Checklist:

a. GL500U-2-1 (USB) or GL500S-2-1 (Serial) Data Logger
b. GL500-2-1 Data Logger Manual
c. GL500S comes with a RS-232 Serial Cable
d. GL500U comes with a USB Cable, Type A to B
e. Global Logger Interface Software on CDROM

II. Inspection:

a. Your Data Logger was carefully inspected and certified by our Quality

Assurance Team before shipping. If any damage has occurred during
shipping; please notify Global Water Instrumentation, Inc. and file a
claim with the carrier involved.

III. Warranty:

a. Global Water Instrumentation, Inc. warrants that its products are

b. The warranty begins on the date of your invoice.

Global Water

800-876-1172 • globalw.com

free from defects in material and workmanship under normal use
and service for a period of one year from date of shipment from
factory. Global Water’s obligations under this warranty are
limited to, at Global Water’s option: (I) replacing or (II) repairing;
any products determined to be defective. In no case shall Global
Water’s liability exceed the products original purchase price.
This warranty does not apply to any equipment that has been
repaired or altered, except by Global Water Instrumentation, Inc.,
or which has been subject to misuse, negligence or accident. It
is expressly agreed that this warranty will be in lieu of all
warranties of fitness and in lieu of the warranty of
merchantability.

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IV. Specification:

Power Supply: Two 9VDC alkaline batteries standard

5 VDC Min. to 24.0 VDC Absolute Maximum
Standby Current: 65uA Typical
Logging Current: 5mA Typical + sensor current

Operating Temperature Industrial, -40ºC to +85ºC (Batteries may not apply)

Analog Sensor Inputs: 4-20mA
Resolution: 12-Bit, 4096 Steps
2 channels + battery voltage monitor
Sensor Warm-up Time: Programmable, 0-60 Seconds

Digital Input: Switch closure input

Maximum Input Voltage: 24VDC
Maximum Frequency: 100Hz
Minimum Pulse Width: 2mS
Maximum Count: 65,535 (16-Bit)

Sample Modes: Fixed Interval: Programmable from 1 Sec. to >1 Year
High Speed: 10 Samples per second
Logarithmic Sample Rate (Approximation)
Exception (Log only on deviation from previous reading)

Storage Capacity: 81,759 Recordings for two analog inputs, battery voltage

monitor and date/time stamp

Communication Ports: GL500S-2-1: RS-232 4-pin circular connector

GL500U-2-1: USB Type B

Selectable Baud Rates: Auto Detect or fixed, rates at

9600, 19200, 28800, 38400, 57600, 115200

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V. 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 COM Port (for GL500S) or USB Port (for GL500U)

Note that the software provided with the data loggers is for running on
desktop and laptop computers only. Software for many popular Handheld
PDA devices is available from Global Water. Special cables may be required.

VI. Software Installation:

Global Logger 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 the Global Logger application in the Program Files folder
and automatically put the Global Logger II icon on the desktop.

Serial communication (GL500S Only

): If you are using the RS-232 serial port to

access the data logger, no further action is needed. You can start using the logger
by opening the Global Logger application program. Skip the next section.

USB Driver Installation (GL500U Only

): With the installation CD in the CDROM

drive and DC power applied to the logger, plug the USB cable into the data logger to

open the ADD New Hardware Wizard. The menus that follow will look different for

different operation systems but the procedure is the same. Do not allow the
Hardware Wizard to automatically search for the driver. Instead, specify the
location (CDROM). If a generic driver gets, or has been previously installed, it must

be uninstalled before proceeding by using the Add or Remove Programs section of
the Control Panel. Instead, click the Search External Media box or Specify a
Location box and install the driver from the CDROM. Running the Setup program
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; although, it is
recommended that the driver be installed at the same time the Global Logger is
installed.

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GL500U Only

The following menus apply to the Windows XP operating system.

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.

2) Do not let Windows automatically
install the software. Click “Install
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.

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GL500U Only

4) The Hardware Wizard searches
for the driver.

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

“Continue Anyway”.

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
must make two passes.

Click Finish.

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

7) The installation is complete.

Click Finish.

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8) To confirm the installation, look in the
Device Manager and find the USB Serial
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 sections, this
COM port will be automatically detected
by the Global Logger software so it is not
necessary to note which port is being
used by the driver.

VII. Direct Connection:

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

detects the communication 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 modem software. The upcoming discussion assumes
that the logger is programmed 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 Access software.

There are 3 ways to connect to the data Loggers, direct connection through the RS­232 serial port (GL500S only) or USB port (GL500U only), as well as dial out through
an installed modem (GL500S-2-1 only with external serial modem).

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Global Water

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To make a direct connection to the logger, click the “Direct” option and from the
“Port” menu, select the port you wish to use.

For USB access (GL500U) select the USB serial port at the COM port the driver was
assigned, which is automatically shown in the list as “Global Logger USB Device”.

Serial connection (GL500S) is generally done using the serial cable provided with
the logger through the 9-pin COM1 connector at the back of the computer although
COM2 can also be used.

Next, select the desired baud rate from the “Baud Rate” menu. Generally, the
fastest 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,
an error message will appear. Check the battery, communication cable, driver
installation and COM port settings.

VIII. Modem Connection (GL500S Only

):

Access to the GL500S-2-1 can be made through dial-out to a remote modem by
clicking the “Modem” option. The connection from modem to logger requires an RS­232 serial modem, USB modems are not supported as an interface to the logger;
therefore, the GL500U logger cannot be accessed by modem. Also, some switch

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Global Water

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GL500S Only

settings must be made to the remote modem and an initialization file may be
required to properly configure the host modem.

Two baud rates are supported 9600 and 19200. Should you experience difficulty
establishing a reliable connection at 19200, try the slower connection speed. Note
that due to the slower baud rates and the additional handshaking performed during
modem communication, The Global Logger software will operate significantly slower
than during a direct connection.

The Global Logger software will remember the last 4 numbers dialed and has a
provision for using a stored text file (.txt extension) for initialization of the host
modem using standard AT commands. Some experience may be required to
configure your modem but a sample command file and some useful tips follow.

Select the baud rate

Type in or find the phone number

Use initialization file

Browse

Select the modem’s COM port

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