GRAPHTEC GL840-M Offers

Work with reliable and long-term measurements with this data logger that supports large-size SD cards. In addition, this data logger has a flexible input system to suit many applications, smartphone and remote access monitoring, and a maximum sampling interval of up to 10 ms.

Features

• Multi-channel type
• Large easy-to-read 7" (177.8 mm) wide color LCD: Carries a clear 7" (177.8 mm) wide TFT color LCD screen (WVGA: 800 x 480 dots) for this data logger, and 4.3" (109.22 mm) wide LCD screen monitoring data are displayed in waveform or digital form option and parameter settings can be displayed on the screen.
• Expandable up to 200 channels: Standard configuration has 20 analog input channels and it is expandable to 200 channels by adding the optional 20 channel extension terminal base unit B-566 (sold separately) and input terminal unit B-564 (sold separately)
• Wireless LAN capability, remote monitoring and datalogging
• Flexible input system for wide array of applications, RTD, T/C
• Ability to access additional (GL100) sensors and adapters
• Extended memory capacity using SD memory card
• Smartphone, remote access monitoring
• All channel isolated/analog signal input port
• Logic/pulse signal input port
• USB2.0
• Ethernet (10BASE-T/100BASE-TX)
• SD card slot for SDHC memory card
• Support digital sensors: Digital sensors and input terminal/adapters for the GL100 connects to this data logger directly
• Easy operation with control button
• Three types of input systems enable measurement of various signals: Along with the basic analog signal, logic/pulse, and digital sensors can be all connected to monitor a variety of measurements
• Control settings
• Maximum sampling interval of up to 10 ms: Provides faster sampling rates for voltage measurements and you are able to achieve up to 10 ms sampling speed when limiting the number of channels in use.
• Alarm output function: Based on set conditions for each channels, alarm signals can be placed using the four channel alarm output ports (*Input/output cable B-513 option {sold seperately} is required to connect the alarm output ports to external buzzer/light mechanism)
• Navigation feature: Simple to use navigation screen allows setting operation for measurement and wireless LAN adapter (sold separately)
• Ring capture function: The most recent data is saved when the memory is configured in ring memory mode (Number of capturing data is 1000 to 2,000,000 points)
• Relay capture function: Data is continuously saved to multiple files up to 2 GB without losing any data until capturing is stopped when the memory is configured in the relay mode
• Hot-swapping the SD memory card: SD card can be replaced during data capturing when the sampling interval is 100 ms or slower
• USB drive mode: USB drive mode function enables data to be transferred to the PC from this data logger by drag and drop feature

Input

• Adoption of a pluggable M3 screw type input terminal facilitates wiring
• 20 channel measurements are supported by the standard terminal, and 200 channel measurements are supported by the extension terminal base
• When using the GS series and terminal/adapter, the acceleration, AC current, CO₂, and illuminance/ultraviolet measurements are also possible
• Because that standard terminal has a whole CH isolated, the different standard signals can be measured at the same time

Display and operation

• With this data loggers high-resolution 7" (177.8 mm) 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

• Data is directly saved to the large SD memory card (Standard accessory: 4 GB)
• Their two mounting slots for the SD memory card and long-term measurement can be performed while backing up the data (*When the optional wireless LAN unit {sold separately} is installed, the SD memory card cannot be inserted into the SD CARD2 slot)
• Because disk image can be used for the SD memory card , multiple data can be saved
• 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, temperature 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)
• This data logger is equipped with the relay recording function, and 2 GB or more data can be saved by switching the to the other file without data missing (When the capacity of one file reaches 2 GB, the file is switched)

Data control and processing

• The application software provided lets you set conditions and monitor data on a PC
• The USB drive mode function enables the SD memory card to be recognized as an external drive by the PC (Connect this data logger to the PC and turn on the data logger power while holding down the {START} key)
• The WEB server function enables control and monitoring from a remote location without using dedicated software
• The FTP client function enables backup of measurement data to the FTP server
• The NTP client function enables synchronization of the time with the NTP server
• When optional wireless LAN unit is installed (sold separately), the data capture can be performed remotely by controlling the GL100-WL

Networking features

• Web and FTP server function: This data logger can be controlled externally via a network on the WEB browser, which also supports monitoring and transfer of signals and captured data
• FTP client function: Captured data is periodically transferred to the FTP server for backup
• NTP client function: The clock on this data logger is periodically synchronized with the NPT server (This data logger needs to be connected to a LAN environment using the available Ethernet/WLAN ports)

The GL series carries two SD memory card slots for storage device. The SDHC type SD memory card is supported up to 32 GB. 4 GB SD memory card comes as a standard accessory installed in the first slot.

Accommodates a wide variety of measurements

Multifunction analog input ports: Contains a highly isolated input mechanism which ensures that signals are not corrupted by noise from other channels. This data loggers inputs are suitable for combined measurements from voltage, temperature, humidity, logic, and pulse signals.
Four channels if logic/pulse inputs: Supports four-channel logic or pulse signal inputs. Pulse mode allows cumulative, instant, or rotational values for industrial measurements capability with speed and flow.

Applications

• Agriculture
• Greenhouse and hydroponics
• Construction and civil engineering
• Machinery manufacturing
• Automotive
• Aerospace
• Utilities/gas and electric
• Electrical appliance and office equipment
• Food processing

High performance software with useful functions for the PC

Supports GL840, GL240, GL100

Up to 10 units of GL840, GL240 and GL100 can be connected to one PC simultaneously. Up to 1000 channels are supported.

Various measurement screen

Display data in Y-T waveform, digital monitoring, statistical calculation result. The direct-Excel function enables captured data to be written directly to an Excel file.

File operation

Data capture in multiple files can be merged into a single file. Using the combine function, data can be imported as a new channel overlaying on top of each other. The bind function connects the data in a time axis. When using the relay capture mode, the bind feature will append multiple files together into one large, continuous file.

Useful functions

Scheduling function: Create a schedule for your monitoring to start and stop at selected time, and set an automatic measurement schedule.
Group function: Multiple units can be managed, such as controlling start or stop simultaneously. Data captured by each unit is saved in a single file.

Data format conversion

Converts the GBD (Graphtec Binary Data) format to CSV format. The file size is reduced using the compression function saving a value at particular time point of a specified interval. Or, it will save the average, maximum, or minimum values from the specified time intervals as the highlighted values.

High quality performance and measurement software with useful functions for the PC and smart device environment

For PC

• Software for the PC is included as a standard accessory
• Monitor and save captured data remotely
• Control this data logger
• Scheduling function
• Group function
• Data format conversion
• File operation and more!

For smart device (GL-connect)

Apps for the smart devices are available on the Android OS and iOS platforms. Download them free from the individual stores.

Monitoring captured data: Real time captured data can be displayed as digital values in real time on the smart devices apps. The saved data on this data loggers main body can also be displayed in waveform display format (Captured data will not be saved on the smart device).

Set and control simple functions: Dedicated control features allow remote start and stop, setting the sampling interval, and setting the alarm conditions.

Control the settings remotely: Web server functions for this data logger allows remote control and monitoring using this application.