midi Logger GL840 Series

Three types of input to measure various phenomena

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

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-565 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.

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	●	●	●	●	●	●	●	●
Measuring	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

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