Japanese Graph TEC Recorder Series Products

Japanese Graph TEC Recorder GL7000
GL900-8
GL900-4
GL840
GL820
GL240

GL840 Product Features
Two product models, GL840-M and GL840-WV, with high voltage resistance and high precision and standard specifications. 20 channels, expandable to 200 channels.

In addition to the standard GL840-M, which is suitable for multi-channel temperature measurement, the high voltage resistant and high-precision GL840-WV has been added for voltage measurement and high-precision temperature measurement of rechargeable batteries.

Supports 3 input formats

Equipped with three input ports: [analog signal input (full channel isolation multifunctional)] [logic/pulse input] [digital sensor input port], it can measure various phenomena.

Wireless LAN module for wireless measurement
After connecting to the router, the local and Internet can simply realize wireless measurement. Remote monitoring can also be performed.

GL100 is used as a sub machine
Using wireless LAN modules and up to 5 PetitLOGGER GL100 devices, it can be connected as a child machine.

Zui supports 10ms interval sampling with high support
Reducing the number of channels used can increase the sampling speed to 10ms.

4GB memory for secure long-term measurements
Comes standard with 4GB of flash memory. The data is saved in GBD format or CSV format.

Convenient features
Alarm output function and navigation function, applicable to three kinds of power supply, Internet function, etc. The GL840 is available with various convenient functions.

GL840 wireless function
Fully utilize GL840 wireless LAN module!

After installing the optional GL wireless LAN module (B-568), the MIDI LOGGER GL840 can be measured wirelessly.
Install the wireless LAN module and select the "mother mode" or "child mode" for wireless measurement according to the purpose.

The networking method of wireless LAN

After installing the optional GL wireless LAN module, the MIDI LOGGER GL840 can be measured wirelessly.
Install the wireless LAN module and select the "mother mode" or "child mode" for wireless measurement according to the purpose.

Usage within wireless LAN range

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Utilization within the wireless LAN circle (connecting to servers)

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Connect to the network (remote monitoring)

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GL840 Technical Specification Parameters and Indicators

3Various input forms can measure various phenomena

Input 1: Maximum expansion to 200ch analog signal input port (channel to channel insulation multifunctional input)

We have prepared standard input terminal blocks (B-564) and high-voltage high-precision terminal blocks (B-565) for inputting analog signals, which can be used for different measurement purposes. The two end sub stations adopt a full channel isolated input method and can measure various phenomena. The standard channel count is 20ch, and it can be expanded up to 200ch. The use of splicing cables, expansion bases, and terminal blocks can extend the body terminal spacing to 20m.

Expansion of the number of interfaces for analog signal input ports

The number of channels in the terminal block can be expanded from the standard 20ch to 200ch (adding 20ch at a time).
Extension Example of GL840-M

GL840Connecting cables (50cm, 2m) with an extension terminal block can separate the body terminal block and terminal terminals.
When noise affects, please slow down the sampling speed.

Input 2: Digital sensor connection port

GL100All 7 types of sensors and adapters can be connected. Further extending the scope of measurement.

Input 3: Logic/Pulse Input Port

Four channels of logic or pulse signals are available for input. When measuring pulse signals, the measurement of cumulative instantaneous speed can be selected for each channel.

The highest sampling speed of 10ms

Reducing the number of channels can maximize data recording speed by 10ms.

4GBStorage space for secure long-term data recording

Comes standard with 4GB flash memory. The recorded data can be saved in GBD (Graphtec binary data) format or CSV format.
Recording time example (when recording analog signals for 20ch and 2GB)

The recorded time is an estimated value. The sampling speed is limited by the number of ch used. 10ms：1ch、50ms：5ch、100ms：10ch

Duplicate recording function

When the set number of records is exceeded, the old data will be automatically deleted and only the saved data will be saved. Number of settings: 1000 points to 200000 points.

Relay recording function

GL840The maximum size for recording data at once is 2GB. This feature allows for continuous recording in units of 2GB without losing data.

The function of swapping SD cards in data recording

The function of swapping SD cards during data recording.

Convenient features

Alarm output function

When an abnormal signal occurs, an alarm signal can be output. Each channel can be set with conditions. Comes standard with 4 output ports.

USBdrive mode

Connect GL840 and PC with a USB cable. If started in USB driver mode, GL840 will be recognized as a driver by the PC, and data files inside GL840 can be dragged and dropped to the PC.

Navigation function

Introduce record settings and trigger settings, as well as simple wireless LAN connections for first-time users.

7Inch TFT LCD screen display

The LCD screen has become larger, improving visibility and operability.

Suitable for 3 types of power sources

GL840The power supply supports AC power, DC drive, and battery drive.

Rich networking features

There are various connection methods to transmit data through the internet.
Web browser functionality/FTP server functionality.
FTP client functionality/NTP client functionality.