Overview; Features - GRAPHTEC gl820 User Manual

CHAPTER 1 General Description
1.1

Overview

The GL820 (with color monitor and internal memory) are compact, lightweight, multi-channel data loggers.
GL820 are provided with 20 channels as a standard measurement feature, or can be extended up to 200
channels by attaching additional terminal sets.
GL820 are also equipped with an internal flash memory to store data and enable the direct capture of a large
volume of data to USB memory.
Furthermore, the data loggers are equipped with USB and Ethernet interfaces to a PC to enable system
configurations according to your application.
The Ethernet feature includes WEB and FTP server functions which allow monitoring from a remote location
and data transfer.
1.2

Features

Input
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Adoption of a pluggable M3 screw type input terminal facilitates wiring.
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The GL820 is provided with 20 channels as a standard measurement feature, or can be extended up to
200 channels by attaching additional terminal sets.
●
All channels are isolated, enabling measurement of signals of different references.
Display & Operation
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With the GL820's high-resolution 5.7-inch TFT color liquid crystal display, you can confirm the
waveforms of measured data and each channel's settings at a glance.
●
Easy operation is achieved through a straightforward menu structure and key allocation which
resembles mobile phones.
Data Capture
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Data can be directly captured and maintained in the internal or USB memory.
●
The high-capacity internal memory enables measurement for a long term without the use of USB
memory.
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Internal memory used for the built-in memory maintains captured data even after the power is turned off.
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The Internal memory can be used with disk images thus multiple data items can be maintained.
●
The new ring memory capture function maintains latest data even after capturing for a long term. (You
need to set how long you want to keep data.)
●
For voltage and humidity measurements, data can be captured at sampling rates of up to 10 msec per
channel by using fewer measuring channels. (Temperature measurement can be done at sampling
rates of 100 msec and higher.)
Data Control & Processing
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The application software provided lets you set conditions and monitor data on a PC.
●
The USB drive mode function enables the GL820's internal memory to be recognized as an external
drive by your PC. (Connect the GL820 to your PC and turn on the power supply to the GL820 while
holding down the [START] key.)
●
Captured data can be read from the application software to files and displayed for processing.
●
Data can be transferred off-line to a computer using USB memory.
●
The WEB server function enables control and monitoring from a remote location without using
dedicated software.
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The FTP server function enables handling internal memory and USB memory data from a PC.
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The FTP client function enables backup of measurement data to the FTP server.
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The NTP client function enables synchronization of the time with the NTP server.
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