Xylem GL500 MULTICHANNEL DATA LOGGER - Manual (Page 30)

Global Water
800-876-1172
• globalw.com
- 30 -
XIX. Maintenance:
a. Except for an optional battery pack, there are no user-serviceable
parts inside the Data Logger.
b. Global Water recommends checking the battery on a regular basis, the
period depending on the type of battery used.
XX. Troubleshooting:
Issue: Logger is reading incorrectly.
a. Verify the power source is supplying enough voltage. The logger
requires at least 4.2 volts to operate. If the logger is supplying power
to the sensors, consult the requirements for the individual sensors.
b. Check the logger and sensor calibration and recalibrate if necessary,
saving the setup file first as described in section XI.
c. Check the sensor connections and clean them according to the
manufacturers recommendations.
Issue: Cannot communicate with the logger.
a. Verify that sufficient power is applied and wired correctly.
b. Check the communication cable.
c. If the connection is 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.
d. 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.
f. Try switching from RS-232 to USB or USB to RS-232.