Maintenance; Troubleshooting - Global Water GL500-2-1 Manual

XIX.

Maintenance:

a. Except for battery and desiccant, there are no user-serviceable parts
inside the GL500-2-1 Data Logger.
b. Global Water recommends checking the batteries every 6 months.
c. Clean the sensor screen using clean water and a toothbrush to
remove any algae, mud or sludge.
XX. Troubleshooting:
Issue: Logger is reading incorrectly.
a. Verify the battery supply has enough voltage. To operate properly, the
logger must have a minimum of 5 volts; however, sensors may require
more voltage. If the battery voltage monitor is reading less than 15
volts or seems incorrect, check the batteries with a voltmeter or
replace them. Battery voltages of less than 15 volts indicate that the
batteries need replacing.
b. Check the logger and sensor calibration numbers in the Setup Menu.
Recalibrate the logger if necessary. As a precaution, save the setup
file first as described in section XI.
Issue: Cannot communicate with the logger.
a. Verify that good batteries are installed.
b. Check the communication cable.
c. If the connection is to the GL500S using the serial cable provided by
Global Water, verify that the correct COM port is selected in the
connection menu of the Global Logger software.
d. If the connection is to the GL500U through the USB port, use the
Device Manager to confirm that the driver is loaded and the correct
virtual COM port is selected in the connection menu of the Global
Logger software. Check the Device Manager in your operating system
and confirm that the USB COM port is not being used by another
device.
e. Try reducing the baud rate in the connection screen of the Global
Logger software.
Global Water
800-876-1172 • globalw.com
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