Dataloggers and recorders with serial RS232 or USB connections



  • 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

Datalogger Product Description

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).

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.

Please note: The Global Logger PDA software, included with the datalogger, does not support the Palm operating system.  For more information on supported PDAs click HERE.

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.

Dataloggers Specifications

Global Dataloggers
Memory:  Non-volatile flash memory
Power: Voltage:  Two 9VDC alkaline batteries standard.  8 VDC Min. to 24.0 VDC Absolute Maximum.
Standby Current:  65uA Typical
Logging Current:  5mA Typical + sensor current
Analog Sensor Inputs:  4-20mA (0-5VDC as factory option)
Resolution:  12-Bit, 4096 Steps
Channels:  2 Input channels + battery voltage monitor
Sensor Warm-up Time:  Programmable, 0-60 Sec
Digital Inputs:  Switch closure or pulse 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 all inputs plus time stamp
Data Overwrite: Select memory wrap or unwrap (unwrap will stop logging data once memory is full)
Communication Ports:
   GL500S-2-1: RS-232 4-pin circular connector
   GL500U-2-1: USB Type B
Selectable Baud Rates: 9600, 19200, 28800, 38400, 57600, 115200
Clock: Synchronizes to the time and date of user’s computer
Clock Accuracy: 1 minute per month
Operating Temperature: Industrial, -40 to +185°F (-40 to +85°C) (Battery may not apply)
Enclosure: PVC (3x3x3 inch (7.6×7.6×7.6 cm))
Weight: 0.5 lbs (227 g)

Format: Bluetooth 2.0 SPP (Serial Port Protocol)
Baud Rate: Auto Detect up to 115K Baud
Power: 9 V Alkaline, approx. 20 hours continuous use
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 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 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)

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).

Datalogger Options

GL500U-2-1 Datalogger (PN# FR0000)
USB version for collecting data with most laptop/desktop computers.  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.

GL500S-2-1 Datalogger (PN# FS0000)
SERIAL version for collecting data with most PDAs that use the CE and Mobile operating systems.  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.


GL450-2-1 Optional Datalogger Enclosure Upgrade (PN# FB0155)
Rugged weather-resistant enclosure for the Datalogger for addtional protection.  NOTE: No additional batteries included.


GL450-2-1-B Optional Datalogger Enclosure Upgrade (PN# FB0150)
Rugged weather-resistant enclosure for the Datalogger for addtional protection.  NOTE: Includes 2.2AH battery.


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.


Bluetooth External Adapter (PN# AK1500)
NOTE: Bluetooth adapter requires serial version of datalogger.


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


RM100 Remote Radio Telemetry System

GL500-7-2 Multichannel DataLogger
Features 7 analog channels and 2 pulse channels, USB and serial communication port, and includes software and cables.  Requires an external 12 VDC power source.

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.

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

EB 20

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

MRC 5000 Circular Chart Recorder with Display

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

SIT70 Satellite Internet Telemetry
Includes the following parts: transmitter, antenna with 5-ft cable, rugged NEMA 4 enclosure, a rechargeable 5 AH gel cell battery, and mounting hardware.