GL840
midi Logger

Input system 1 : Multifunction analog input ports

Contains a highly isolated input system which ensures that signals are not corrupted by noise from other channels. The GL840’s inputs are suitable for combined measurements from voltage, temperature, humidity, logic, and pulse signals.
The standard configuration has 20 analog input channels. It is expandable to 200 channels by adding optional 20 channels extension terminal base unit (B-566) and input terminal units (B-564 or B-565).

Withstand voltage & Accuracy Multi-input type (GL840-M)
Input terminal (B-564 / B-564SL)		 Withstand-voltage type (GL840-WV)
Input terminal (B-565)
Voltage Input voltage range 20 mV to 100 V 20 mV to 100 V
Max. voltage (Input – GND) 60 Vp-p 300 Vp-p
Temp. Thermocouple R, S, B, K, E, T, J, N, W (WRe5-26)
RTD (Resistance Temp. Detector) Pt100 (IEC751), Pt1000 (IEC751), JPt100 (JIS)
Accuracy Voltage ± 0.1% of F.S. ± (0.05% of FS + 10μV)
Temperature* ± 1.55 ºC ± 1.1 ºC

* Accuracy rating for K-type thermocouple at 100ºC includes reference junction compensation. Accuracy varies by temperature levels and thermocouple types.

The following shows how a standard configuration is expanded to more than 40 channels

Configuration for additional channels

Number of channels 20 channels 40 channels 100 channels 200 channels
GL840 unit (GL840-M or GL840-WV) 1 set 1 set 1 set 1 set
Connection cable (B-567-05 or -20) N/A 1 pc 1 pc 1 pc
Terminal base (B-566) N/A 2 sets 5 sets 10 sets
Input terminal (B-564 or B-565 ) N/A 1 set 4 sets 9 sets

Offers longer cable for the input terminals

Input terminal blocks can be connected directly (in daisy chain), or using the B-567 cable(s). This allows the input terminals to be placed in separate locations according to the need of the application.

The input terminal unit and the GL840 main body can be extended by using an extended connections cable.

* If the signal is affected by noise, it may be required to use a slower sampling.

Optional terminal lineup

Standard terminal : B-564

This standard terminal is mounted on the standard model GL840-M of the main unit.
It is a multi-standard terminal in the terminal line-up.

Specifications: Same as the above specifications.

Withstand high-voltage high-precision terminal : B-565

This withstand high-voltage high-precision modelthe terminal is mounted on the GL840-WV of the main unit.
It is a withstand high-voltage and high-precision terminals in the terminal lineup.

Specifications: Same as the above specifications.

Screwless terminal : B-564SL

The performance of this newly added terminal is equivalent to that of the standard terminal B-564.
The push-button shape of the terminals makes it easy to connect signal input lines, greatly reducing wiring time when using multiple channels.
* This terminal is only available as an option item. It is not sold in combination with the main unit.

Item Description
Number of analog channels 20ch / unit
Input terminal type Screwless terminal
Connectable wire diameter φ0.3 to 1.3mm
Measurement ranges Voltage 20mV – 100V, 1-5V F.S.
Temperature Thermocouples: K, J, E, T, R, S, B, N, C (WRe5-26)
RTD: Pt100, JPt100, Pt1000
Humidity 0 to 100% (* Optional item B-530 is required)

Terminal Base Cover : B-588

This is a newly added optional terminal cover.
It can be mounted on each terminal of the B-564/565/564SL.
It is ideal as a safety measure to prevent accidental touching of the wire connections.
* This is not compatible with shunt resistor (B-551)

Input system 2 : Support digital sensors

Digital sensors and input terminal/adapters for the GL100 connects to the GL840 directly

Input system 3 : 4 channels of Logic/Pulse inputs

Supports 4-channels logic or pulse signal inputs. Pulse mode allows cumulative, instant, or rotational values for industrial measurement capability with speed and flow.

Maximum sampling interval of up to 10ms

Provides faster sampling rates for voltage measurements. Up to 10ms sampling speed is achievable when limiting the number of channels in use.

Sampling Interval 10ms 20ms 50ms 100ms 200ms 500ms 1s 2s
Number of channel 1 2 5 10 20 50 100 200
Measuring Voltage ● ● ● ● ● ● ● ●
Temperature – – – ● ● ● ● ●

Built-in 4GB Flash memory with SD card support

The new GL series enables reliable long term measurment with its built-in 4GB flash memory and SD card slot for external storage devices. The SD card slot supports an SDHC memory card of up to 32GB.

The captured data can be stored in GBD (Graphtec binary data) or CSV file format.

Capturing time* (when all 20 analog channels are being used with Logic/Pulse inputs turned off.)

Sampling 10ms 50ms 100ms 200ms 500ms 1s 10s
GBD format 31 days 77 days 95 days 108 days 270 days Over 365 Over 365
CSV format 3 days 11 days 16 days 21 days 54 days 109 days Over 365
*
Figures are approximate. File size of captured data is 2GB in GBD or CSV file format on this chart.
Sampling interval is limited by the number of channels in use. (10ms:1ch, 50ms:5ch, 100ms:10ch)
Limited sampling speed is available when digital sensors and GL100-WL are used as a remote monitoring device.

Ring capture function

Relay capture function

The most recent data is saved when the memory is configured in ring memory mode. (Number of capturing data is 1000 to 2000000 points)

Data is continuously saved to multiple files up to 2GB 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 100ms or slower.

Back up recording data

The data file can be created periodically for purpose of backing up data while recording it, and the file is automatically transferred to another storage device on the unit or FTP server on the network.

Backup interval: 1, 2, 6, 12, 24 hour(s)
Backup file destination: SD memory card or FTP server
Data file format: GBD (binary) or CSV (text)

• Available sampling speed is the 100 ms or slower when using the CSV format.
• When the RING mode or external pulse synchronization sampling is selected for recording, the backup function is not available.
• The storage device specified as the recording destination of the measurement data can not be set as the transfer destination of the backup file.
• When backup is enabled and data file format is specified with CSV format, SD memory card exchange (hot-swapping) and RELAY recording are not available.

Data file verification

It is a function to check the integrity of the data file when replaying the data file. It compares check-sum generated from the data file and recorded check-sum. When two check-sums do not match, the data file may be corrupted or has been changed by someone. The check-sum code is recorded into the file when data file is created by the GL unit.

* Check-sum code is added to normal data recording file and also file created for backup, ring or relay recording. Adding check-sum is available for data files created in GBD format.When the recorded data file is converted and saved using GL100_240_840-APS or GL-Connection software, the check-sum code will not match.
* This function is available with firmware version 1.43 or rater.

Useful functions

Displays the data by a bar chart (in firmware ver.1.10 or later)

The integrated data that is measured by the digital sensors can be displayed by a bar chart in the GL840 series.

Available GS sensors Measurement Unit
GS-TH (Temp/Humidity) sensor Integrated temperature ℃h
GS-DPA-AC adapter with GS-Acxxx sensor (AC current/power) Integrated power kWh
GS-LXUV (Illuminance/UV) sensor Integrated illuminance lxh or klxh
Integrated UV mW/cm2h

Alarm output function

USB drive mode

Alarm signals can be placed using the four channel alarm output ports based on set conditions for each channel.
* Optional cable (B-513) is required.

USB drive mode function enables data to be transferred to the PC from GL840 by drag & drop feature.

Navigation function

Large easy-to-read 7-inch wide color LCD

Simple to use navigation screen allows setting operation for measurement and wireless LAN adapter.

Monitoring data can be displayed in waveform or digital form. Parameter settings can be displayed on the screen.

3 Types of Power Source

Networking features

Choose from AC power supply, DC supply* or the rechargeable battery pack.*
* Optional accessories (B-514 or B-569) are required.

Various functions are available using a network.
Web & FTP server function, FTP client function, NTP client function

Cover (B-578)

Storage case (B-581)

Protect the main body from cosmetic damages and minor impacts.
* The cover is not to protect from hard impact.

Portable case to store GL840 and signal input cables for easy handling.
* The case is not to protect from hard impact.

WIRELESS LAN

Wireless measurement using wireless LAN (option)*

* Optional Wireless LAN unit is available in limited region.
Wireless LAN option enables the wireless communication with other device.
Connects to the GL100-WL wireless unit remotely when the GL840 is set as an access point.
When the GL840 is set as a station, PC and smart devices will be able to access the WLAN unit directly.

What you can do using the wireless LAN (option)*
Case 1 : Combining GL100-WL and GL840

GL100-WL can now be connected to the GL840 as a remote sensor using the WLAN feature.
You can expand your measurement variety by adding the sensors available on the GL100-WL unit.
The measured value by GL100-WL will appear in a single file along with the measurement value from the GL840 main inputs. GL840 will now take in direct information from the GL100-WL units.GL840 supports up to five units of the GL100-WL.

Application Example: Air conditioning performance test

Easily get the additional information that is required for the multi channel temperature measurement.

Measurement data from GL100-WL, GS sensor on the main unit can be displayed as a waveform and digital value.

Case 2 : Remote monitoring of GL840 by PC or Smart device

Measured data can be monitored and controlled via PC or a smart device using the applicaiton software.

Using a wireless LAN, there is no needs to connect by USB cable with the GL840.

Application Example: Equipment maintenance (remote monitoring)

■Available functions

Display the data Control the Start / Stop Change the settings Saves the data Receives warning mail
Smart
Device		 YES YES YES N/A N/A

■Available functions

Display the data Control the Start / Stop Change the settings Saves the data Receives warning mail
PC YES YES YES YES N/A

■Available functions

Display the data Control the Start / Stop Change the settings Saves the data Receives warning mail
Smart
Device		 YES YES YES N/A N/A

■Available functions

Display the data Control the Start / Stop Change the settings Saves the data Receives warning mail
Smart
Device		 YES YES YES N/A N/A
PC YES YES YES YES N/A

Case 3 : Remote monitoring of GL840 using Network

GL840 can be connected to a LAN (Local Area Network) via an wireless LAN access point.

Available configuration

■Available functions

Display the data Control the Start / Stop Change the settings Saves the data Receives warning mail
Smart
Device		 YES YES YES N/A N/A
PC YES YES YES YES YES

■Available functions

Display the data Control the Start / Stop Change the settings Saves the data Receives warning mail
Smart
Device		 YES YES YES N/A YES

■Available functions

Display the data Control the Start / Stop Change the settings Saves the data Receives warning mail
PC YES YES YES YES YES

Case 4 : Remote monitoring of GL840 via Internet

Using a router that supports a dinamic DNS service,
it enables to monitor GL840 remotely via Internet.
In other words, it is possible to contact your GL840 whereever you are !!

Available configuration

■Available functions

Display the data Control the Start / Stop Change the settings Saves the data Receives warning mail
Smart
Device		 N/A N/A N/A N/A YES
PC N/A N/A N/A N/A YES

■Available functions

Display the data Control the Start / Stop Change the settings Saves the data Receives warning mail
Smart
Device		 YES YES YES N/A YES
PC YES YES YES YES YES

SPECIFICATION & ACCESSORY

GL840 Main unit specifications

Item Description
Model number GL840-M GL840-WV
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, Screwless terminal (option)
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)
Maximum number of pulse inputs Maximum input frequency : 50kHz Maximum number of count : 50kC/sampling (16-bit counter)
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
Back up recording data function Backup interval *8 Off, 1, 2, 6, 12, 24 hour(s)
Backup file destination *8 SD memory card or FTP server
Data format *8 GBD (binary) or CSV (test)
Check-sum function (Verifies data file) OFF: Not adding check-sum code to data file. ON: Adding check-sum code to data file. Check-sum code is verified when replaying data on the GL unit or GL-Connection software.
Capturing mode Mode: Normal, Ring, Relay Ring: Saves most recent data (Number of capturing data: 1000 to 2000000 points) *9 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 *10 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 *11 Max. 38 VA
External dimensions (W x D x H in mm, Excluding projections) Approx. 246 x 161 x 58.2 (with the cover) Approx. 246 x 170.4 x 58.2 (with the cover)
Weight *12 Approx. 1218 g (the cover is attached) Approx. 1244 g (the cover is attached)
(*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 C604XXXX or later. Please contact your local representative for more information.
(*7)SD memory card cannot be used on the SD card slot while the wireless LAN unit (opton B-568) is used.
(*8)
– When the RING mode or external pulse synchronization sampling is selected for recording, the backup function is not available. – When there are meany number of active channels, the sampling time is fast, or the backup interval is long, it may take time to closing the data file after recording stops because the size of the data to be backed up becomes large. – When saving file to FTP server using wireless LAN connection, backup may fail depending on the communication condition. – Available sampling speed is the 100 ms or slower when using the CSV format. – When backup is enabled and data file format is specified with CSV format, SD memory card exchange (hot-swapping) and RELAY recording are not available.
(*9)Size of the capture data will be limited to 1/3 of available memory.
(*10)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.
(*11)Rating under maximum power consumption using the AC adapter, with LCD display on, and battery pack(s) being charged.
(*12)Excludes AC adapter and battery pack.

GL840 Analog input specifications (Including optional input terminals)

Item Description
Model number GL840-M, Input terminal B-564 / B-564SL GL840-WV, Input terminal B-565
Input method All channels isolated balanced input *13, Scans channels for sampling
Type of input terminal • GL840-M / (B-564) Screw terminal (M3 screw) • GL840-M /（B-564SL） Screwless terminal Connectable wire diameter：φ0.3 to 1.3mm Screw terminal (M3 screw)
Measurement range Voltage 20, 50, 100, 200, 500 mV, 1, 2, 5, 10, 20, 50, 100 V, and 1-5V F.S. (Full Scale)
Thermocouple Type: K, J, E, T, R, S, B, N, W (WRe5-26) Range: 100, 500, 2000 ºC *14
RTD (Resistance Temperature Detector) Type: Pt100, Pt1000 (IEC751), JPt100 (JIS) Range: 100, 500, 2000 ºC *14
Humidity 0 to 100 % RH – using the humidity sensor (option B-530)
Filter Off, 2, 5, 10, 20, 40 (moving average in selected number)
Measurement accuracy *15
Voltage ± 0.1% of F.S. (Full Scale) ± (0.05% of F.S. + 10μV)
Temperature (Thermocouple) *16
Type Measurement range (TS: Temp Sense) Measurement accuracy Measurement accuracy
R 0 ≤ TS ≤ 100 ºC ± 5.2 oC ± 4.5 oC
100 < TS ≤ 300 ºC ± 3.0 oC ± 3.0 oC
300 < TS ≤ 1600 ºC ± (0.05% of rdg. + 2.0 oC) ± 2.2 oC
S 0 ≤ TS ≤ 100 ºC ± 5.2 oC ± 4.5 oC
100 < TS ≤ 300 ºC ± 3.0 oC ± 3.0 oC
300 < TS ≤ 1760 ºC ± (0.05% of rdg. + 2.0 oC) ± 2.2 oC
B 400 ≤ TS ≤ 600 ºC ± 3.5 oC ± 3.5 oC
600 < TS ≤ 1820 ºC ± (0.05% of rdg. + 2.0 oC) ± 2.5 oC
K -200 ≤ TS ≤ -100 ºC ± (0.05% of rdg. + 2.0 oC) ± 1.5 oC
-100 < TS ≤ 1370 ºC ± (0.05% of rdg. + 1.0 oC) ± 0.8 oC
E -200 ≤ TS ≤ -100 ºC ± (0.05% of rdg. + 2.0 oC) ± 1.0 oC
-100 < TS ≤ 800 ºC ± (0.05% of rdg. + 1.0 oC) ± 0.8 oC
T -200 ≤ TS ≤ -100 ºC ± (0.1% of rdg. + 1.5 oC) ± 1.5 oC
-100 < TS ≤ 400 ºC ± (0.1% of rdg. + 0.5 oC) ± 0.6 oC
J -200 ≤ TS ≤ -100 ºC ± 2.7 oC ± 1.0 oC
-100 < TS ≤ 100 ºC ± 1.7 oC ± 0.8 oC
100 < TS ≤ 1100 ºC ± (0.05% of rdg. + 1.0 oC) ± 0.6 oC
N -200 ≤ TS < 0 ºC ± (0.1% of rdg. + 2.0 oC) ± 2.2 oC
0 ≤ TS ≤ 1300 ºC ± (0.1% of rdg. + 1.0 oC) ± 1.0 oC
W 0 ≤ TS ≤ 2000 ºC ± (0.1% of rdg. + 1.5 oC) ± 1.8 oC
R.J.C. ± 0.5 oC ± 0.3 oC
Temperature (RTD) *17
Type Measurement range (TS: Temp Sense) Accuracy Accuracy
Pt100 -200 ≤ TS ≤ 100 ºC ± 1.0 oC ± 0.6 oC
100 < TS ≤ 500 ºC ± 0.8 oC
500 < TS ≤ 850 ºC ± 1.0 oC
Pt1000 -200 ≤ TS ≤ 100 ºC ± 0.8 oC ± 0.6 oC
100 < TS ≤ 500 ºC ± 0.8 oC
JPt100 -200 ≤ TS ≤ 100 ºC ± 0.8 oC ± 0.6 oC
100 < TS ≤ 500 ºC ± 0.8 oC
A/D converter Sigma-Delta type, 16 bits (effective resolution: 1/40000 of the measuring full range)
Input resistance 1MΩ ±5%
Allowable signal source resistance Up to 300Ω Up to 100Ω
Maximum input voltage Between (+) / (-) terminal 20 mV to 2 V range: 60 Vp-p, 5 V to 100 V range: 110 Vp-p
Channels ((-) / (-)) 60 Vp-p 600 Vp-p
Channel / GND 60 Vp-p 300 Vp-p
Max. voltage (withstand) Between channels 350 Vp-p (1 minute) 600 Vp-p
Channel / GND 350 Vp-p (1 minute) 2300 Vrms AC (1 minute)
(*13)The terminal “b” for using the RTD is connected each other across all channels.
(*14)If the specifications of the temperature sensor is lesser or greater than the selected measurement range, GL840 can measure up to the specifications of the sensor.
(*15)Subject to the following conditions:
  • Room temperature is 23 oC ± 5 oC.
  • When 30 minutes or more have elapsed after power has turned on.
  • Filter is set to 10.
  • Sampling rate is set to 1 sec, using 20-channel in GL840-M and 10-channel in GL840-WV.
  • GND terminal is connected to ground.
(*16)Wire size of thermocouple used is 0.32mm diameter in the T or K type and 0.65mm diameter in other types.
(*17)Supports 3-wire type sensor.

Software specifications for PC

Item Description
Model name GL100_240_840-APS
Supported OS Windows 10, 8.1, 8, 7, Vista (32/64-bit edition)
Supported device GL840 (USB, Ethernet, WLAN), GL100 (USB, WLAN)
Functions Control the GL series, Real-time data capture, Replay data, and Data format conversion
Supported units & channels Up to 1000 channels total, Up to 4 groups (number of units is limited by model)
Settings control Input condition, Capturing condition, Trigger/Alarm condition, Report, etc.
Capturing data Saved to PC Saves captured data in real time (in GBD binary or CSV format)
Saved to GL unit Saves to the SD memory card (in GBD binary or CSV format)
Displayed information Y-T waveform, Digital values, Report, X-Y graph (specified period of data, data reply only), Two displays for the current and past data, and Statistical calculation
File operation Converting data format to CSV from GBD binary, merge multiple data files in the time axis or as an additional channel
Warning function Send e-mail to the specified address when the alarms occur
Statistical calculation Maximum, Minimum, and Avarage during data capturing
Report function Creates the daily or monthly report automatically

Software specifications for Smart device

Item Description
Model name GL-Connect
Supported OS Android 4.1 to 6.0, iOS 9/10/11
Supported device GL840 (WLAN), GL100 (WLAN)
Functions Control the GL series, Display measured data in waveform or digital value
Supported units Up to 10 units
Settings control Start/Stop, Sampling interval
Capturing data Saves captured data in the GL main body (data cannot be saved in the smart device)
Displayed information Data captured in real time by digital value, Replay the data stored in the GL body by the waveform

Wireless LAN unit (option) specifications

Item Description
Model number B-568
Supported device GL840
Communication method Wireless communication (using radio waves in the 2.4GHz band)
Supported WLAN system IEEE802.11b/g/n WPS: Push button or PIN method Security protocols: WEP64, WEP128, WPA-PSK/WPA2-PSK, AKIP/AES Communication distance: Approx. 40m (depending on the conditions of radio communication)
Installed location Attaches to the SD card slot *7
Function Access Point mode: Communicate with the GL100-WL as a remote sensor (captured data in the GL100-WL is transferred to GL840) Station mode: Communicate with PC or Smart device (control GL840 and transfer the data from GL840)
Connected number of GL100-WL GL840: Up to 5 units of the GL100-WL

Humidity Sensor B-530 (option) Specifications

Item Description
Allowable temperature range -25 to 80℃
Allowable humidity range 0 to 100％ RH
Relative humidity measurement accuracy ±3％ RH（5 to 98％ RH at 25℃）
Method Capacitance method
Relative humidity measurement accuracy (5 to 98%) Measurement environment Measurement accuracy
0 to 10℃ ±5％ RH
10 to 20℃ ±4％ RH
20 to 30℃ ±3％ RH
30 to 40℃ ±4％ RH
40 to 50℃ ±5％ RH
50 to 60℃ ±6％ RH
60 to 70℃ ±7％ RH
70 to 80℃ ±8％ RH
* Measurement accuracy at 60℃ or more is a reference value.
Response time 15 sec. (90% response when membrance filter is installed)
Sensor output 0 to 1 VDC
External dimensions Φ14 x 80 mm (excluding cable)
Cable length 3 ｍ
Sensor power source DC + 5 to +16 V
Power consumption approx. 4 mA

Options and Accessories

Item Model number Description
Standard terminal B-564 20ch input terminal, multi-input type
Screwless terminal B-564SL 20ch input terminal, multi-input type
Withstand high-voltage high-precision terminal B-565 20ch input terminal, withstand-high-voltage type
Base unit for input terminal B-566 Base unit for input terminal (B-564 or 565)
Connection cable for extension terminal B-567-05 Cable to connect GL840 and B-566, 50 cm long
B-567-20 Cable to connect GL840 and B-566, 2 m long
Wireless LAN unit B-568 WLAN adapter, IEEE802.11 b / g / n
Battery pack B-569 Rechargeable Lithium-ion battery (7.2 V, 2900mAh)
Cover B-578 Rubber protector (for replacement)
Bracket for DIN rale (GL840 main body) B-570 Bracket for DIN rail (GL840 main body), Build-to-order
Bracket for DIN rail (extension terminal) B-540 Bracket for DIN rail (Input terminal), Build-to-order
Input/Output cable for GL series B-513 2 m long (no clip on end of cable)
DC drive cable B-514 2 m long (no clip on end of cable)
Humidity sensor B-530 With 3 m long signal cable (with power plug)
Shunt resistor B-551-10 250 ohms 0.1% (it converts the signal to the “1-5V” from the “4-20mA”)
Storage case B-581 Storage for GL series (except GL7000 and GL100)
AC power adapter ACADP-20 For replacement Input: 100 to 240 V AC, Output: 24 V DC
Temp & Humidity sensor GS-TH Temperature and humidity measurement
Illuminance & UV sensor GS-LXUV Illuminance and UV intensity measurement, cable 20cm long
Carbon Dioxide (CO2) sensor GS-CO2 CO2 measurement, cable 20cm long
Acceleration & Temp sensor GS-3AT Acceleration and temperature measurement, cable 20cm long
Thermistor input terminal GS-4TSR Temp measurement (using a Thermistor), cable 20cm long
Thermistor sensor (Normal type) GS-103AT-4P Temperature sensor (-40 to 105 ºC), 3m long, 4pcs/set
Thermistor sensor (Ultrathin type) GS-103JT-4P Temperature sensor (-40 to 120 ºC), 3m long, 4pcs/set
AC current sensor adapter GS-DPA-AC Current measurement (using a CT), cable 20cm long
AC current sensor (50A) GS-AC50A Current sensor (CT) 50A, cable 20cm long
AC current sensor (100A) GS-AC100A Current sensor (CT) 100A, cable 20cm long
AC current sensor (200A) GS-AC200A Current sensor (CT) 200A, cable 20cm long
Voltage & Temp input terminal GS-4VT Voltage or Temperature (using a thermocouple), cable 20cm long
Module extension cable GS-EXC Extension cable for the sensor / terminal / adapter module, 1.5m long
Dual port adapter GS-DPA Connect up to 2 sensor modules

Dimensions

GL840-M External Dimensions with cover (rubber protector)

Scale : mm, Tolerance : +/- 5 mm

GL840-M External Dimensions

Scale : mm, Tolerance : +/- 3 mm

GL840-WV External Dimensions with cover (rubber protector)

Scale : mm, Tolerance : +/- 5 mm

GL840-WV External Dimensions

Scale : mm, Tolerance : +/- 3 mm

Input terminal / Base unit

■Input terminal (B-564) with Base unit (B-566)

■Input terminal (B-564SL) with Base unit (B-566)
■Input terminal (B-565) with Base unit (B-566)
■Base unit for input terminal (B-566)
■When two Base unit are connected.
Scale : mm, Tolerance : +/- 3 mm

DOCUMENTS

GL840 Datasheet

GL840 No WLAN

GL840 With LAN