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    Multi-Channel Datalogger with Color Display

Multi-Channel Datalogger with Color Display

  • Extended memory capacity using SD memory card
  • Max sampling interval up to 10ms
  • Smartphone access

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Datalogging for High Voltage Monitoring

Multi-Input Unit

Withstand High Voltage Unit



Expandable up to 200 channels

Standad configuration has 20 analog input channels. lt iexpandable to 200 channels by adding the optional 20 channel extension terminal base unit (B-566) and input terminal units (B-564 or B-565).

The following shows how a standad configuration is expanded to a 40 channel configuration.





Input Terminal Unit TypesGL840-M I Multi-input (B-564)GL840-WV I Withstand-Voltage (B-565)
VoltageInput Voltage Range20 mV to 100V 20 mV to 100V
 Max. Voltage (input - GND)60 Vp-p300 Vp-p
Temp.ThermocoupleR, S, B, K, E, T, J ,N, W (WRe5-26)
 RTD (Resistance Temp. Detector)Pt100 (IEC751),JPt100 (JIS),Pt1000 (IEC751)
AccuracyVoltage± 0.1% of F.S. ± (0.05% of F.S. + 10pV)
 Temperature± 1.55 °C ± 1.1 °C





  • Wireless LAN capability | remote monitoring & datalogging
  • Flexible input system for wide array of applications | RTD' T/C
  • Ability to access additional (GL100) sensors & adapters
  • Extended memory capacity using SD memory card
  • Max sampling interval up to 10ms
  • Smartphone access




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. The GL840 inputs are suitable for combined measurements from voltage, temperature, humidity, logic, and pulse
4 channels of Logic/Pulse inputs
Supports 4-channel logic or pulse signal inputs. Pulse mode allows cumulative, instant, or rotational values for industrial measurement capability with speed and flow.



Large easy-to-read 7-inch wide color LCD
Carries a clear 7-inch wide TFT color LCD screen (WGA: 800 x 480 dots)
for the GL840, and 4.3-inch wide LCD screen Monitoring data are
displayed in waveform or digital form option. Parameter settings can be
displayed on the screen.






 GL840 Main unit specifications
Number of analog input channels 20 channels in standard configuration, Expendable up to 200 channels
Number of analog input terminalsUp to 10 terminals (20 channels / terminal),standard config:1
Type of analog input terminalMulti-input type, Withstands-voltage type
Port for digital sensor1 port for the sensor/input terminal/adapter of the GL100
External input/outputlnput Trigger or Sampling (1channel),Logic/Pulse (4 channels)
Output Alarm (4 channels)
Sampling interval10 ms to 1 hour (10 ms to 50 ms: voltage only),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: 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 outputOutput a signal when alarm condition occurs in the input
Pulse input functionRotation count
Counts the number of pulses per sampling interval and converts to rpm
(rotations per minute),Number of pulses for one rotation may be set to
50, 500, 5000, 50k, 500k, 5M, 50M, 500M rpm/F.S. (rpm./Full Scale)
Accumulates the number of pulses from the start of measurement
50, 500, 5000, 50k, 500k, 5M, 50M, 500M C/F.S. (Counts/Full Scale)
lnstant countCounts 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
lnterface to PCEthernet (10 BASE-T/100 BASE-TX) , USB (Hi-speed),WLAN (using 8-568 option)
MediaSD memory card (Support SDHC, up to 32 GB),supports 2 slots
Saved contentsCaptured data, Setting conditions, Screen copy
Capturing modeMode: Normal, Ring, Relay
Ring: Saves most recent data (Number of captured data: 1000 to 2000000 points)
Relay: Saves data to multiple files without losing data until data capturing is stopped
Replay DataReplays captured data that was saved in the GL840 (in BGD or CSV format)
Scaling (Engineering unit) functionMeasured value can be converted to the 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 captureDisplaying parst data (using dual display mode (Current + Past data))
. Hot-swapping the SD memory card
. Saving data in between cursors
DisplaySize7-inch TFT color LCD (WVGA: 800 x 480 dots)
LanguageEnglish, French, German, Chinese, Korean, Russian, Spanish, Japanese
lnformation Waveform in Y-T with digital values, Waveform only, Digital value, Digital values
and statistics values
Operating environment 0 to 45°C, 5 to 85 % RH (non condensed)
(When operating with battery pack 0 to 40°C, charging battery 15 to 35°C)
Power sourceAC adapter100 to 240 V AC, 50/60 Hz 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 battery pack (battery pack (option B-517): 7.2V DC, 2900mAH)
Power consumption Max.38 VA
External dimensions (W x D x H
in mm, excluding projections)
Approx. 240 x 158 x 52.5Approx. 240 x 166 x 52.5
Weight Approx. 1010 gApprox. 1035 g