midi logger

GRAPHTEC midi logger GL840 storage recorder is divided into two product models: [high voltage resistance and high precision] and [standard] In addition to [standard GL840-M] for multi-channel temperature measurement, [high voltage withstand and high precision GL840-WV] for voltage measurement and high-precision temperature measurement of rechargeable batteries is added.

The midi logger GL840 storage recorder supports three input modes It is equipped with three kinds of input ports [analog signal input (full channel isolation multi-function)] [logic/pulse input] [digital sensor input port], which can measure various phenomena.

The midi logger GL840 memory recorder has three input forms to measure various phenomena

Input 1: extended to 200ch analog signal input port (inter channel insulation multi-function input)

Standard input terminal blocks (B-564) and high voltage and high precision terminal blocks (B-565) are prepared for input of analog signals for different measurement purposes. The sub stations at both ends adopt the full channel isolation input mode, which can measure various phenomena. The number of standard channels is 20ch, which can be extended to 200ch. The body terminal spacing can be extended to 20m by using the connecting cable, expansion base and terminal block.

Expansion of interface number of analog signal input port of midi logger GL840 storage recorder

The channel number of the terminal block can be expanded from the standard 20ch to 200ch (add 20ch at a time).
■ Extension example of GL840-M

GL840 can separate the body terminal block and the terminal terminal block with the extension terminal block connecting cable (50cm, 2m)
※ Please slow down the sampling speed when noise affects.

Input 2: digital sensor connection port of midi logger GL840 storage recorder

All 7 sensors and adapters of GL100 can be connected. It also extends the measurement range.  

Input 3: Logic/pulse input port of midi logger GL840 storage recorder

Logic or pulse signal 4 channels are available for input. When measuring pulse signal, the measurement of cumulative instantaneous speed can be selected for each channel.

The midi logger GL840 stores the sampling speed of the recorder for 10ms

Reduce the number of channels to record data at a speed of 10ms.

4GB storage space can safely record data for a long time

The midi logger GL840 storage recorder is equipped with 4GB flash memory as standard. The recorded data can be saved in GBD (graphtec binary data) format and CSV format.
Example of recording time (analog signal 20ch, 2GB recording)

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

Convenient functions of midi logger GL840 storage recorder

Alarm output function When abnormal signals occur, alarm signals can be output. Each channel can set conditions. Four output ports are provided as standard.	USB drive mode Connect GL840 and PC with USB cable. If GL840 is started in USB drive mode, it is recognized as a drive by PC, and data files in GL840 can be dragged to PC.
Navigation function Introduce the record setting and trigger setting, simple wireless LAN connection to the first user.	7-inch TFT LCD screen display The LCD screen becomes larger, improving visibility and operability.
Applicable to 3 power supplies The GL840 power supply supports AC power supply, DC drive and battery drive.	Rich networking functions There are various connection methods to transfer data by using the network. WEB browser function/FTP server function. FTP client function/NTP client function.

The wireless LAN module of midi logger GL840 temperature recorder can be used flexibly!!

Midi LOGGER GL840 can be measured through wireless after installing the optional GL wireless LAN module (B-568). Install wireless LAN module, and select "master mode" or "slave mode" for wireless measurement according to the purpose.

Wireless LAN Use Cases

After the optional GL wireless LAN module is installed in midi LOGGER GL840, the wireless LAN module can be installed through wireless measurement, and the "master mode" or "slave mode" can be selected according to the purpose for wireless measurement.

Utilization within wireless LAN circle

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Utilization in wireless LAN circle (connected to mailbox server)

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