Nine Channel Environmental Data Logger for Recording a Variety of Sensor Signals


  • Four sample modes: 10 times per second, timed, logarithmic, and exception
  • Both USB and Serial communication ports
  • Monitor up to 9 sensors at a time in addition to battery voltage
  • Battery powered for remote locations
  • User friendly Windows and PDA software included
  • Accepts any 4-20mA input
  • Optional rugged, lockable, weather resistant enclosure

Multichannel Data Logger Product Description

The Global multichannel datalogger, GL500, is the latest addition to our line of rugged remote recording instrumentation.  It features 7 analog channels and 2 digital channels for data recording.  The GL500 can record over 40,000 readings and has four unique recording options, fast (10 samples per second), programmable interval (1 second to multiple years), logarithmic, and exception.  The datalogger also has a sample on demand input that triggers a recording of special events, such as when a water sampler was triggered, when a door was opened, etc.  Daily start and stop alarm times can be programmed to limit recording intervals during a day.  The GL500 includes Windows and PDA software, allowing easy upload of data to a laptop, desktop, or PDA for transfer to a spreadsheet program.  NOTE: The Palm operating system is NOT supported.  For more information on supported PDAs click HERE.

Bluetooth Capability
The GL500-7-2-BT Data Logger is a version of Global Water’s popular GL500 logger plus a built in Bluetooth 2.0 serial interface for accessing data and settings without the use of a custom connection cable.  Using a PDA, laptop or desktop computer with Bluetooth capability; the data logger’s data and settings can be viewed, stored and programmed using the Global Logger II desktop and PDA software packages, as well as the Flow Monitor software.  All of the features in these data logger software packages are available using the Bluetooth interface.

Because the Bluetooth module draws power when turned on, the data logger features a power switch so you can turning it off when not in use. A red LED indicates when the data logger’s Bluetooth module is on and a blue LED shows the status of the Bluetooth connection.

Data Logger Inputs
The Global data logger is setup to accept any 4-20 mA sensor.  The GL500 provides switched power to the sensors based on the sample interval and sensor warm up time settings.  Twisted pair 2-wire and 3-wire sensors can be quickly connected to the datalogger’s terminal strip and calibrated via the Global datalogger software.  Your sensors can be accessed through dial-out to a remote modem attached to the GL500’s serial communication port.  The datalogger software has online help files that are easily accessed using drop down menus and links to quickly find the answers to your questions.

The data recorder has an optional rugged, lockable and weather-resistant enclosure that can easily be hidden, bolted to a post, or secured inside an additional container for added protection from the elements, animals or vandals.  A 12VDC rechargeable battery and battery charger come with the data logger enclosure option.

Global Water offers many sensors that can be used with the Data Loggers for monitoring a variety of environmental parameters, including:

Contact us for more information on designing a GL500 Data Logger based environmental monitoring system and unique, special, and custom modifications to meet the requirements of your application.

Multichannel Data Logger Specifications

Global Data Logger
Memory:  Non-volatile flash memory
Power: Voltage:  7.2 VDC Min. to 24.0 VDC Absolute Max
Standby Current:  70uA Typical
Logging Current:  5mA Typical + sensor current
Analog Sensor Inputs:  4-20mA (0-5VDC as factory option)
Resolution:  12-Bit, 4096 Steps
Channels:  7 Input channels + battery voltage monitor
Sensor Warm-up Time:  Programmable, 0-60 Sec
Digital Inputs:  2 Independent pulse counters
Maximum Input Voltage:  24VDC
Maximum Frequency:  100Hz
Minimum Pulse Width:  2mS
Maximum Count:  65,535 (16-Bit)
Sample Now Input:  Sample-on-Demand input, software enabled
Maximum Input Voltage:  24VDC
Minimum Pulse Width:  2mS
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: 40,879 Recordings for all inputs plus time stamp
Data Overwrite: Select memory wrap or unwrap (unwrap will stop logging data once memory is full)
Communication Ports: RS-232 DB9 or USB Type B
Selectable Baud Rates: 9600, 19200, 28800, 38400, 57600, 115200
Clock: Synchronizes to the time and date of user’s computer
Operating Temperature: Industrial, -40 to +185°F (-40 to +85°C) (Battery may not apply)
Enclosure: Expanded UV protected PVC ((5x2x3 inch (12.7x5x7.6 cm))
Weight: 1.5 lbs (680 g) (with weather-proof enclosure)

Format: Bluetooth 2.0 SPP (Serial Port Protocol)
Baud Rate: Auto Detect up to 115K Baud
Power: 7.2-24 VDC Absolute Maximum
Current: 30mA Average
Range: 20 Feet Maximum
Operating Temp: -40° to +185°F (-40° to +85°C)
Compatible Software: Global Logger II version 2.1.5 or higher
   Global Logger II PDA software version 2.0.1
   FL16 Flow Monitor version 2.3.2

Data Logger Software
Compatible with Microsoft’s Windows 98, ME, 2000, NT, XP, Vista, and 7
Windows and Excel are trademarks of the Microsoft Corporation
Tabular Display/Printout
Data in standard spreadsheet format (.CSV)
Programmable alarm start and stop times
Field calibration software and help files included PDA software: CE and Mobile compatible.  For more information on supported PDAs click HERE.

Optional Weather-Proof Enclosure
Expanded UV protected PVC (9″ x 7.5″ x 4.5″)
Optional Battery (Included with Weather-Proof Enclosure): 12 Volt, 2.2 A/hr., Rechargeable (Gell Cell)
Weight: 3.5 lbs (with data logger)

Data Logger Software Information

The Data Logger includes Global Water Datalogger Software, Windows-based software that provides many useful features, such as real-time readout, measurement interval and engineering unit selection, station ID setting, and sensor calibration.  The software makes accessing stored data and setting options easy.  Data downloaded from the Data Logger can easily be opened in any PC spreadsheet program for analysis and graphic presentation.  Globlal Water’s Data Logger Software will run on a PC-type laptop or desktop computer running Windows 98 or later.  To communicate with the Data Logger, either a standard RS232 serial or a USB host communication port will work.  Purchase of the Data Logger includes communication cables (for communication between the data logger and your computer).

Multichannel Data Logger Options

GL500-7-2 Multichannel Data Logger (PN# FQ0000)
Features 7 analog channels and 2 pulse channels, USB and serial communication port.  Requires an external 12 VDC power source.

GL500-SCM  Data Logger Software Kit (PN# FQ0300)
Includes software, manual, and interface cables.

GL500-7-2-BT Multichannel Data Logger w/Bluetooth (PN# FQ1000)
Features 7 analog channels and 2 pulse channels, USB and serial communication port.  Requires an external 12 VDC power source.


GL450-7-1 Optional Data Logger Enclosure Upgrade (PN# FE0850)
Weather-resistant enclosure for the Data Logger.  Includes a rechargeable 12 V battery (that fits inside the enclosure with the Data Logger) and a battery charger.

GL500-DISP Optional Single-Channel Display for Data Logger Enclosure Upgrade (PN# FL0000)
Allows user to view one sensor’s reading in addition to recording data for that sensor.  Data Logger will not record data while displaying information.  Must purchase enclosure separately.

GL500-Mod Modem Package (PN# FQ0500)
Includes standard telephone modem and modem adapter cable.

SP102 Solar Panel (5 Watts, 300mA minimum) (PN# FH0000)
Supplemental Power for remote data logger sites.

BC100 Smart Charger (PN# FN0000)
Maintain constant battery level and increase battery life.

CS100 Current Splitter (PN# FNB000)
Route the sensor output to two different monitoring devices.


RM100 Remote Radio Telemetry System

DC Power Supplies

GL500-2-1 Datalogger (FR0000)
Specify Serial or USB version when ordering.  Features 2 analog channels and 1 pulse channel.  Includes two internal 9V batteries, Windows-based Global Water Datalogger Software, and PDA software for the CE and Mobile operating systems.

WQL-pH pH Datalogger
Included: pH datalogger, PC-program WQL-Log, USB cable, Li battery, shackle, and hex wrench.

WQL-Cond Conductivity Datalogger
Conductivity datalogger for remote monitoring.

WQMS Water Quality Monitoring System
The standard unit includes a datalogger, temperature sensor, pH sensor, conductivity sensor (with a 0-5000µS range unless otherwise specified), and DO sensor.

EBI-20-T1-Set Temperature Datalogger Kit
Includes EBI-20-T datalogger, Winlog.basic software, EBI-20 interface, and USB cable. (1601-0046)

EBI 100-T101 Temperature Data Logger (1340-6501)

FSS Flow Sampling System
A unique combination of products that makes monitoring, sampling, and recording stormwater or industrial discharge water flows easy.