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20 channel data logger with 7" color display (TFT color LCD), 16-bit resolution, high isolation per channel (125 VAC RMS and 350 VDC channel-to-chassis), Up to 110Vp-p between ( ) and (-), withstands up to 350Vp-p (max 1min) channel-to-GND and between channels.
- 20 analog input channels, expandable to 200
- 4 discrete input channels
- 4 discrete alarm outputs
- Optional WiFi wireless operation (Order B-568)
- Communicate with up to (5) GL100 units with B-568 Wifi module
- Flexible triggering
- Built-in, 7-inch color display
- Built-in Web server operation for remote operations
- Removable SD memory support up to 32 GB capacity
- Operates either stand-alone or PC-connected
Graphtec GL840M - 60Vp-p Temperature/Voltage Logger
Standalone System
The Graphtec GL840M is a high-quality 20-channel datalogger that is expandable up to 200 total channels. Each channel is isolated. This unit is suitable for many applications including temperature measurement with multiple channels. The built-in 7-inch color display provides an intuitive data viewing experience. Although this system is designed as a standalone unit, it can be connected to a PC if needed.
Communicate with up to (5) GL100 units with B-568 Wifi module
Multifunction analog input ports
The GL840M has been designed with an extremely isolated input system ensuring that all signals are left unaffected by outside channel noise. With this capability, this system can be used for a variety of applications including voltage, humidity, temperature, pulse and logic.
The GL840M comes standard with 20 analog input channels but it is easily expandable up to 200 channels by adding the optional 20-channel extension terminal base (B-566) and other input terminal units (B-564 or B-565).
Sampling Interval
This is used to set the sampling interval for data capture. The table below shows the number of measuring channels and sampling interval values that can be set. If data fluctuate due to noise, set the sampling interval to a value that enables the digital filter function.