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Instrumentation / Graphtec / DATA LOGGER /

Modular system allows expansion up to 200 channels

The standard configuration has 20 analogue input channels. It can be expanded up to 200 channels by adding optional 20 channelextension terminal kits.


Modular system allows expansion up to 200 channels



Isolated channels, each with multifunction input

It contains an isolated input system which ensures that signals are not corrupted by inputs to other channels, thus eliminating wiring concerns. The GL820s multi-type inputs are suitable for voltage, temperature, humidity, pulse, and logic signals, enabling combined measurements of different phenomena like temperature/humidity and voltage.

*) The input signal needs to be not exceeding the specified voltage at any time.
The component in the amplifire of the unit may have the damage by over voltage.
Please check the details of over voltage in the specification sheet (Maximum input voltage or Withstand voltage seccion) or the caution label attached on the unit.


Maximum sampling rate of up to 10ms

Provides faster sampling rates for voltage measurements. Can achieve 10ms sampling interval when limiting the number of channels in use.



Built-in 2GB Flash Memory for reliable long term measurement

The 2GB Flash Memory enables secure long term data measurement without using an external storage device. Data is retained even when power is turned off because flash memory is used.


Hot-swappable USB memory sticks

Also supports popular USB memory sticks for external storage. The GL820 saves measured data directly to USB memory sticks. USB memory sticks can be replaced during measurement without data loss.


Large easy-to-read 5.7-inch wide TFT color LCD

Large easy-to-read 4.3-inch wide TFT color LCD

Utilises a bright clear 5.7-inch wide TFT color LCD monitor (VGA: 640 x 480 dots). Makes it easy to read data in waveform or digital form and to check your measurement parameter settings. The background color of the screen can be set to black or white.


Easy connection to PC via USB or Ethernet

The GL820 can be controlled by a PC if connected by USB cable, allowing transfer of data to a PC in real-time. If you need to move large data files to your PC then the GL820 can emulate an external USB drive for quick data transfer.
The WEB & FTP server function, FTP client-server function and NTP client function are supported when the GL820 is connected to the LAN via the Ethernet port.

Easy connection to PC via USB or Ethernet