• Data Logger GL500-2-1

Data Logger GL500-2-1

  • Rugged and easy to use
  • USB or Serial communication ports available
  • Records over 81,000 readings

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The GL500-2-1 Datalogger is the latest addition to Global Water’s line of rugged remote dataloggers

The dataloggers feature two analog channels and one digital channel for recording data, as well as monitoring battery voltage. The datalogger records over 81,000 readings and has four unique recording options: fast (10 samples per second),programmable interval (1 second to multiple years),logarithmic, and exception. Start and stop alarm times can be programmed to synchronize multiple dataloggers, delay sampling until a preset time, or limit the number of recordings during a day. The dataloggers are available for computers with either a RS-232 serial communications port (GL500S-2-1 version) or a USB port (GL500U-2-1 version).


  • Rugged and easy to use
  • USB or Serial communication ports available
  • Records over 81,000 readings
  • Battery powered for remote locations
  • User friendly Windows and PDA software included
  • Accepts any 4-20mA input

Remote Monitoring

The GL500-2-1 dataloggers can monitor two 4-20mA sensors (0-5 volt inputs are available as a factory option) and features a scalable digital input that accepts switch closure signals from rain gauges or relays, as well as pulses from various external monitoring and control devices. The datalogger provides switched power to the sensors based on the programmable sample interval and sensor warm up time settings. 2-wire and 3-wire sensors can be quickly connected to the datalogger’s internal terminal strip and calibrated via the Global Logger software. The GL500S-2-1 Datalogger Serial Communications version can be accessed through dial-out to a remote modem attached to the serial communication port.


The GL500-2-1 dataloggers include Global Logger II Windows software and PDA software, which allow for easy setup, calibration, upload, and transfer to a spreadsheet program using a laptop, desktop, or PDA. The Global Logger II Windows software has online help files that are easily accessed using drop down menus and links to quickly find the answers to your questions.

Bluetooth Capability

The AK1500 Bluetooth Adaptor was designed to eliminate the need for custom PDA cables to communicate between your PDA and the GL500S-2-1 Dataloggers. The adaptor connects to the datalogger's serial port using the same interface cable provided with the software-cable kit. The interface operates from a single 9 volt battery and is turned on automatically when the cable connects the datalogger and Bluetooth adapter. Because the Bluetooth module consumes power when turned on, it is recommended that the cable be disconnected from the datalogger when not in use. A red LED shows the power status and is on continuously while the adaptor is plugged into the datalogger. There is also a blue LED that shows the status of the Bluetooth connection.

    Datalogger Software Information

    The Datalogger 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 recorded data and setting options easy. Data downloaded from the datalogger can easily be opened in any PC spreadsheet program for analysis and graphic presentation. Globlal Water's Datalogger Software will run on a PC-type laptop or desktop computer running Windows 98 or later. To communicate with the Datalogger, a standard RS232 serial cable for the GL500S-2-1or a USB Type B cable for the GL500U-2-1 is required. Purchase of the datalogger includes the appropriate communication cable (for communication between the datalogger and your computer).

    MemoryNon-volatile flash memory
    Standby Current65uA Typical
    Logging Current5mA Typical + sensor current
    Analog Sensor Inputs4-20mA (0-5VDC as factory option)
    Resolution12-Bit, 4096 Steps
    Channels2 Input channels + battery voltage monitor
    Sensor Warm-up TimeProgrammable, 0-60 Sec
    Digital InputsSwitch closure or pulse input
    Maximum Input Voltage24VDC
    Maximum Frequency100Hz
    Minimum Pulse Width2mS
    Maximum Count65,535 (16-Bit)
    Sample ModesFixed 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 Capacity81,759 Recordings for all inputs plus time stamp
    Data OverwriteSelect memory wrap or unwrap (unwrap will stop logging data once memory is full)
    Communication PortsGL500S-2-1: RS-232 4-pin circular connector GL500U-2-1: USB Type B
    Selectable Baud Rates9600, 19200, 28800, 38400, 57600, 115200
    ClockSynchronizes to the time and date of user's computer
    Clock Accuracy1 minute per month
    Operating TemperatureIndustrial, -40 to +185°F (-40 to +85°C) (Battery may not apply)
    EnclosurePVC (3x3x3 inch (7.6x7.6x7.6 cm))
    Weight0.5 lbs (227 g)
    FormatBluetooth 2.0 SPP (Serial Port Protocol)
    Baud RateAuto Detect up to 115K Baud
    Power9 V Alkaline, approx. 20 hours continuous use
    Current30mA Average
    Range20 Feet Maximum
    Operating Temp-40° to +185°F (-40° to +85°C)
    Compatible SoftwareGlobal Logger II version 2.1.5 or higher
    Global Logger II PDA software version 2.0.1
    FL16 Flow Monitor version 2.3.2
    Datalogger 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
    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)
    Weight3.5 lbs (with data logger)