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Multi-Channel Data Logger



Isolated/Universal input, standalone multi-channel data logger ideal for voltage/temperature measurement on multiple channels.


  • Flexible input system for wide array of applications
  • Wireless LAN capability for remote monitoring and remote data logging system
  • Extended memory capacity using SD memory card
  • Maximum sampling interval of up to 10ms
  • Large easy-to-read 7-inch wide color LCD for GL840M and 4.3-inch for GL240
Number of analog input channels 10 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 GL100
External input/
output *¹
Input *²Trigger or Sampling (1 channel), Logic/Pulse (4 channels)
Output *³Alarm (4 channels
Sampling interval10 ms to 1 hour (10ms to 50ms: voltage only) *⁴, External signal
Time scale of waveform display1 sec. to 24 hour /division
Alarm function
Trigger actionStart or stop capturing data by the trigger
Repeat actionOff, On (auto rearmed)
Trigger sourceStart: Off, Measured signal, Alarm, External, Clock, Week or Time
Stop: Off, Measured signal, Alarm, External, Clock, Week or Time
Condition SettingCombination: AND / OR
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 outputOutputs a signal when alarm condition occurs in the input signal *⁵
Pulse input
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)
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
Counts the number of pulses per sampling interval
50, 500, 5000, 50k, 500k, 5M, 50M, 500M C/F.S. (Counts/Full Scale)
Between channelsAddition, Subtraction, Multiplication, and Division for analog input
StatisticalSelect two calculations from Average, Peak, Maximum, Minimum, RMS
Search functionSearch for analog signal levels, values of logic or pulse or alarm point in captured data
Interface to PCUSB (Hi-speed), WLAN (using B-568 option)Ethernet (10 BASE-T/100 BASE-TX), USB (Hi-speed), WLAN (using B-568 option)
InternalBuilt-in 4GB Flash Memory *⁶
ExternalOne SD card slot (Supports SDHC memory card, up to 32GB) *⁷
Saved contentsCaptured data, Setting conditions, Screen copy
Capturing modeMode: 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 data capturing is stopped
Replay dataReplays captured data that was saved in the GL240 (in BGD or CSV format)Replays captured data that was saved in the GL840 (in GBD or CSV format)
Scaling (Engineering unit) functionMeasured 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 (LCD)Size4.3-inch TFT color LCD (WQVGA: 480 x 272 dots)7-inch TFT color LCD (WVGA: 800 x 480 dots)
LanguageEnglish, French, German, Chinese, Korean, Russian, Spanish, Japanese
Information*⁹Waveform in Y-T with digital values, Waveform only, Digital value, Digital values and statistics values, Bar chart
Operating environment0 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 sourceAC adapter100 to 240 V AC, 50/60 Hz (1 pc of adapter is attached as standard accessory)
DC power8.5 to 24 V DC (DC drive cable (option B-514) is required
Battery packMountable two battery packs (battery pack (option B-569): 7.2V DC, 2900mAh)
Power consumption *¹⁰Max. 38 VAMax. 36 VA
External dimensions WxDxH *¹¹~188 x 117 x 42 mm ~ 240 x 158 x 52.5 mm
Weight *¹²~ 500g~ 1010g
List Price$ 1,250$ 2,490

*1. Input/Output cable for GL (option B-513) is required to connect the signal.
*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. The built-in Flash memory is available for units with serial numbers C604xxxxx or later. Please refer to the website for more information.
*7. SD memory card cannot be used on the second slot while the wireless LAN unit (option 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 dedicated key is pressed. In magnified digital value mode, displayed channel no. can be specified. In the waveform display mode, changing of 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 protrusions
*12. Excludes AC adapter and battery pack

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GL Series Multi-Channel Datalogger

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All products come with a 1 year warranty.
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