Product Highlights

• View the Multimedia Demonstration videos for an in-depth look at some of the many great features in the Graphtec Data Loggers.
• Built-in 5.7" TFT LCD Color Display
• Stand-alone or PC-connected operation
• High-speed Sampling
• Analog channel isolation
• 20mV to 500V full-scale measurements
• Four alarm outputs
• Optional battery pack
• USB and Ethernet PC interfaces.

With its color monitor and internal memory the GL900 is a self-contained, compact, lightweight, multi-channel data logger with 8 analog measurement channels, each with input-to-output and channel-to-channel isolation. Measurements per channel of 20mV to 500VFS across 14 programmable ranges allow the GL900 to adapt to a wide range of signal types, including thermocouple-based temperatures (K,J,E,T,R,S,B,N,W) and process current (4-20 mA). Up to four pulse channels can count and measure speed using an optional cable, and Humidity measurements are also possible with an optional sensor. The GL900 may be configured to trigger up to four different alarm outputs as a function of measured values.

The GL900 allows data to be recorded to internal high-speed volatile RAM memory (64 MB) at rates as fast as 100,000 Hz. The unit also provides built-in non-volatile memory (256 MB) and accepts external USB flash drives (2 GB maximum file size) for lower speed sampling as fast as 1,000 Hz. The minimum sample rate for all memory configurations is one sample per minute.

The GL900 features built-in USB and Ethernet ports to facilitate data transfer to a connected PC either in real time or from its memory for analysis and archiving. Measurement protocols may also be uploaded from the PC to the instrument.

An optional battery pack allows power-independent operation and failsafe measurement continuity during a power failure.

8 Channels Measure Voltage, Current, and Temperature

Measure from 20mV to 500V full scale, as well as process current (4-20mA) and temperature measurements using type J,K,E,T,R,S,B,N, or W thermocouples.

Electrical Isolation Per Channel

The GL900’s eight analog input channels offer electrical isolation to allow accurate measurements in industrial applications where ground potential differences are often encountered.

High-speed Sampling

Depending upon the destination memory (internal RAM, flash, or external USB flash drive) sample rates as fast as 100,000 Hz are supported.

Four Unique ‘Pulse’ Inputs for Discrete Measurements

The GL900 provides discrete input channels that can be used for counting and rotational speed or flow measurement applications. Or program the discrete inputs as simple logic level input channels.

Four Alarm Outputs

Program the GL900 to trigger its open-collector outputs as a function of analog input signal level judgment, pulse judgment, or logic pattern.

Real Time Calculations

The GL900 may be programmed to calculate average value, peak value, minimum value, and rms. You can also generate calculated channels as a function of arithmetic operations in real time.

Bright TFT LCD Color Display

The focal point of the GL900 is its built-in color display that allows real time trending, data review, and complete instrument configuration.

Engineering Units Scaling

Each GL900 channel allows up to four break points to be programmed for accurate scaling into meaningful units like psi, grams, newtons, gallons per minute, liters, etc.

Flexible Triggering Options

The GL900 allows data capture to be started or stopped based upon a manual keystroke or automatically based upon signal level, an external event, date/time, alarm, duration, or Boolean channel combinations. Analog signal triggers can be programmed based upon level and window tests: above threshold, below threshold, inside window, or outside window.

Flexible Power Requirements

Power the GL900 from its provided international AC adaptor, from an optional built-in battery pack, or from any 9 to 24 VDC source using an optional cable.

PC Connectivity via USB or Ethernet

Allows data transfer to the PC either in real time or from the GL900’s memory. Also allows complete configuration of the GL900.

PC Software Bundle Included

The GL900 includes a Windows application for direct capture, measurement, and monitoring of GL900 data as well as analysis (FFT, X-Y plots, etc). The application can export data to an Excel file for further analysis and report creation. The software includes built-in help for quick reference.

Ordering Information, Models, and Prices

Part Number	Description	Price (US)	DATAQ Store
GL900	Compact, lightweight, multi-channel data logger that provides 8 fixed analog measurement channels. Includes calibration certificate traceable to NIST, PC-based software, and AC adaptor.	$4295	Quantity:

Note:We do not accept orders for Graphtec data loggers (GL220, GL820, GL900, and MT100) to shipping or billing addresses outside of North/Central/South America.

Note: The GL900 is NOT compatible with WinDaq or WinDaq/XL Software packages.

Optional GL900 Data Logger Accessories

Part Number	Description	Price (US)	DATAQ Store
ADAP-5	BNC to banana jack Adapter Safety insulated male BNC to dual 4mm banana jacks. View image.	$25	Quantity:
CABL-900	Cable and adapter kit Cable and adapter kit consisting of one ADAP-5; one pair of safety-shrouded 39-in (99-cm) test leads (one red, one black); one pair of safety right angle plunger hook clips (one red, one black). View image.	$50	Quantity:
B-517-2	Set of 2 Battery Packs Two 7.2V/2200mAh Battery packs Only ONE B-517-2 is required for use with the GL900.	$270	Quantity:
B-514	DC Power Cable 2-meter DC power cable, bare tips.	$60	Quantity:
B-513	Logic Alarm Cable 2-meter, bare tips.	$95	Quantity:
B-530	Humidity Sensor 3-meter with dedicated power connector.	$470	Quantity:
B-544	Carrying Case Interior padding and rugged exterior for safe transportation of your data logger. View photo.	$550	Quantity:
R250	Resistor Precision 250 Ω resistor, 0.1%. Learn More about 4-20mA current loop data acquisition.	$0.99	Quantity:
GLACP	Spare AC Power supply Spare AC power supply for GL200A, GL800, and GL900 products	$41	Quantity:

Note: The GL900 is NOT compatible with WinDaq or WinDaq/XL Software packages.

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