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20-ch(200-ch) Withstand-voltage Type Data Logger
모델명 GL840-WV
제조사 GRAPHTEC Corporation
원산지 일본
분류명 midi LOGGER

GL840 Specifications

Model number



Number of analog input channels20 channels in standard configuration, Expandable 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, Withstand-voltage type
Port for digital sensor1 port for the sensor/input terminal/adapter of the 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: 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 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 PCEthernet (10 BASE-T/100 BASE-TX), USB (Hi-speed), WLAN (using B-568 option)
InternalBuilt-in 4GB Flash Memory *6
ExternalOne SD card slot (Support 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 dada capturing is stopped
Replay dataReplays 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
DisplaySize7-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
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 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 *11Approx. 1010 gApprox. 1035 g

Options and Accessories

ItemModel numberDescription
Input terminal (Multi-inputs)B-56420ch input terminal, multi-input type
Input terminal (Withstand voltageB-56520ch input terminal, withstand-high-voltage type
Base unit for input terminalB-566Base unit for input terminal (B-564 or 566)
Connection cable
for extension terminal
B-567-05Cable to connect GL840 and B-566, 50 cm long
B-567-20Cable to connect GL840 and B-566, 2 m long
Wireless LAN unitB-568WLAN adapter, IEEE802.11 b / g / n
Battery packB-569Rechargeable Lithium-ion battery (7.2 V, 2900mAh)
Bracket for DIN rale (GL840 main body)B-570Bracket for DIN rail (GL840 main body), Build-to-order
Bracket for DIN rail (extension terminal)B-540Bracket for DIN rail (Input terminal), Build-to-order
Input/Output cable for GL seriesB-5132 m long (no clip on end of cable)
DC drive cableB-5142 m long (no clip on end of cable)
Humidity sensorB-530With 3 m long signal cable (with power plug)
Shunt resistorB-551-10250 ohms 0.1% (it converts the signal to the "1-5V" from the "4-20mA")
AC power adapterACADP-20Input: 100 to 240 V AC, Output: 24 V DC
Temp & Humidity sensorGS-THTemperature and humidity measurement
Illuminance & UV sensorGS-LXUVIlluminance and UV intensity measurement, cable 20cm long
Carbon Dioxide (CO2) sensorGS-CO2CO2 measurement, cable 20cm long
Acceleration & Temp sensorGS-3ATAcceleration and temperature measurement, cable 20cm long
Thermistor input terminalGS-4TSRTemp measurement (using a Thermistor), cable 20cm long
Thermistor sensor (Normal type)GS-103AT-4PTemperature sensor (-40 to 105 ºC), 3m long, 4pcs/set
Thermistor sensor (Ultrathin type)GS-103JT-4PTemperature sensor (-40 to 120 ºC), 3m long, 4pcs/set
AC current sensor adapterGS-DPA-ACCurrent measurement (using a CT), cable 20cm long
AC current sensor (50A)GS-AC50ACurrent sensor (CT) 50A, cable 20cm long
AC current sensor (100A)GS-AC100ACurrent sensor (CT) 100A, cable 20cm long
AC current sensor (200A)GS-AC200ACurrent sensor (CT) 200A, cable 20cm long
Voltage & Temp input terminalGS-4VTVoltage or Temperature (using a thermocouple), cable 20cm long
Module extension cableGS-EXCExtension cable for the sensor / terminal / adapter module, 1.5m long
Dual port adapterGS-DPAConnect up to 2 sensor modules

파일명 확장자 다운로드
 GL840(no WLAN) Series[Brochure].pdf (746KB)
 GL840(with WLAN) Series[Brochure].pdf (2MB)
 Selection Guide[Brochure].pdf (2MB)
 GL840 Series[Presentation].pdf (4MB)

상호 : 주식회사 마스  |  (우)13209 경기도 성남시 중원구 사기막골로 45번길 14 우림2차 A-1610호   |   Tel : 031-735-6310 / 6320   |   Fax : 031-735-6334
대표이사 / 개인정보관리책임자 : 안승만   |   사업자등록번호 : 129-86-80575   |   통신판매업등록번호 : 제2013-경기성남-0854호   |   메일 : mmm@m-m.co.kr