Graphtec midi data LOGGER GL840-M

Features

7″ Wide TFT Colour LCD Screen
Three Types Of Power Source: AC, DC, Battery Pack
Channels: 20 As Standard | Expandable Up To 200
Expandable Memory With SD Cards
All Channels Isolated

Description
Additional information

SPECIFICATIONS GRAPHTEC MIDI DATA LOGGER GL840-M

Model number: GL840-M

Number of analog input channels: 20 channels in standard configuration, Expandable up to 200 channels

Number of analog input terminals: Up to 10 terminals (20 channels / terminal), standard config: 1

Type of analog input terminal: Multi-input type, Withstand-voltage type

Port for digital sensor: 1 port for the sensor/input terminal/adapter of the GL100

External input/output *1:

+ Input *2:Trigger or Sampling (1 channel), Logic/Pulse (4 channels)

+ Output *3: Alarm (4 channels)

Sampling interval: 10 ms to 1 hour (10ms to 50ms: voltage only) *4, External signal

Time scale of waveform display: 1 sec. to 24 hour /division

Trigger, Alarm function

+ Trigger action: Start or stop capturing data by the trigger

+ Repeat action: Off, On (auto rearmed)

+ Trigger source:

Start: Off, Measured signal, Alarm, External, Clock, Week or Time
Stop: Off, Measured signal, Alarm, External, Clock, Week or Time

+ Condition Setting:

Combination: OR or AND
Analog signal: Rising (High), Falling (Low), Window-in, Window-out
Logic signal: Pattern (combination of each input signal in high or low)
Pulse (number of count): Rising (High), Falling (Low), Window-in, Window-out

+ Alarm output:

Outputs a signal when alarm condition occurs in the input signal *5

Pulse input function:

+ Rotation count (RPM) mode:

Counts the number of pulses per sampling interval and converts to rpm
(rotations per minute), Number of pulses for one rotation can be set to
50, 500, 5000, 50k, 500k, 5M, 50M, 500M rpm/F.S. (rpm./Full Scale)

+ Accumulating count mode:

Accumulates the number of pulses from the start of measurement
50, 500, 5000, 50k, 500k, 5M, 50M, 500M C/F.S. (Counts/Full Scale)

+ Instant count mode:

Counts the number of pulses per sampling interval
50, 500, 5000, 50k, 500k, 5M, 50M, 500M C/F.S. (Counts/Full Scale)

Calculation function:

+ Between channels: Addition, Subtraction, Multiplication, and Division for analog input

+ Statistical: Select two calculations from Average, Peak, Maximum, Minimum, RMS

Search function: Search for analog signal levels, values of logic or pulse or alarm point in captured data

Interface to PC: Ethernet (10 BASE-T/100 BASE-TX), USB (Hi-speed), WLAN (using B-568 option)

Storage device:

+ Internal:

Built-in 4GB Flash Memory *6

+ External:

One SD card slot (Support SDHC memory card, up to 32GB) *7

+ Saved contents:

Captured data, Setting conditions, Screen copy

Capturing mode:

Mode: Normal, Ring, Relay
Ring: Saves most recent data (Number of capturing data: 1000 to 2000000 points) *8
Relay: Saves data to multiple files without losing data until dada capturing is stopped

Replay data:

Replays captured data that was saved in the GL840 (in GBD or CSV format

Scaling (Engineering unit) function:

Measured value can be converted to specified engineering unit
• Analog voltage: Converts using four reference points (gain, offset)
• Temperature: Converts using two reference points (offset)
• Pulse count: Converts using two reference points (gain)

Action during data capture:

• Displaying past data (using dual display mode (Current + Past data))
• Hot-swapping the SD memory card
• Saving data in between cursors

Display:

+ Size: 7-inch TFT color LCD (WVGA: 800 x 480 dots)

+ Language: English, French, German, Chinese, Korean, Russian, Spanish, Japanese

+ Information *9:

Waveform in Y-T with digital values, Waveform only, Digital value, Digital values and statistics values

Operating environment:

0 to 45 ºC, 5 to 85 % RH (non condensed) (When operating with battery pack 0 to 40 ºC, charging battery 15 to 35 ºC)

Power source:

+ AC adapter: 100 to 240 V AC, 50/60 Hz (1 pc of adapter is attached as standard accessory)

+ DC power: 8.5 to 24 V DC (DC drive cable (option B-514) is required)

+ Battery pack: Mountable two battery packs (battery pack (option B-569): 7.2V DC, 2900mAh)

Power consumption *10: Max. 38 VA

External dimensions (W x D x H in mm, Excluding projections): Approx. 240 x 158 x 52.5

Weight *11: Approx. 1010 g

*1. Input/Output cable for GL (option B-513) is required to connect logic/pulse.

*2. Input signal;

Voltage range: Up to 24V (common ground)
Signal type: Voltage, Open collector, Contact (relay)
Threshold: Approx. + 2.5 V (Hysteresis: Approx. 0.5V (2.5V to 3V))

*3. Output signal: Open collector (pull-up to 5V by 10kΩ resistor) <Maximum rating of the output transistor>

Voltage: Max. 30V
Current: Max. 0.5A
Collector dissipation: Max. 0.2W

*4. Minimum interval varies by number of channels used.

*5. Output port can be specified in each input channel.

*6. Built-in Flash memory is available for units with serial numbers C6043XXX or later. Please contact your local representative for more information.

*7. SD memory card cannot be used on SD card slot while the wireless LAN unit (opton B-568) is used.

*8. Size of the capture data will be limited to 1/3 of available memory.

*9. Display mode is switched every time the dedicated key is pressed. In magnified digital value mode, the displayed channel number can be specified. In the waveform display mode, the changing of the time scale will be effective from the point of the next displayed data.

*10. Rating under maximum power consumption using the AC adapter, with LCD display on, and battery pack being charged.

*11. Excludes AC adapter and battery pack.

Introduction Graphtec midi data LOGGER GL840-M

The Graphtec MIDI Data Logger GL840-M is a versatile and advanced data acquisition and recording device designed for various applications where precise data monitoring and logging are required. This data logger is a member of Graphtec’s GL series, known for its reliability and flexibility in capturing and storing data. The GL840-M offers numerous features and capabilities to meet the needs of scientists, engineers, and researchers in various industries.

The GL840-M can simultaneously record data from multiple input channels, making it suitable for applications involving sensors, probes, and other data sources. It supports a broad range of input types, including voltage, temperature, humidity, pulse, and logic signals. This versatility allows it to be used in diverse monitoring scenarios. The device is known for its high data accuracy and resolution, ensuring that the recorded data is reliable and precise. The GL840-M is equipped with a substantial internal memory capacity, allowing it to store a significant amount of data. This is especially valuable for long-term monitoring applications.

It offers real-time monitoring capabilities, allowing users to view data as it is being logged. This feature is beneficial for immediate data analysis and troubleshooting. Users can set up trigger conditions to start and stop data logging based on specific events or thresholds, ensuring that important data is captured.

It supports Ethernet and USB connections, making it easy to transfer data to a computer for further analysis or storage. Graphtec provides user-friendly software for configuring the data logger, monitoring data in real-time, and exporting data for analysis.