Graphtec America GL820 Data Logger
*** Replaced by the GL840 ***Compact Data Acquisition Data LOGGER with modern conveniences such as Ethernet and USB 2.0 interfaces are included, along with a USB flash memory port, so you can easily get the data out of your GL820 and transfer it to your computer. Data are normally captured into the GL's large internal memory, at rates selectable from 10ms to one hour! You can record for hours, days, or even weeks with expandable data logging up to 200 channels!
With 125VACrms/350VDC isolation on all the analog channels, it means you can hook up your GL820 Data Logger without the normal worry about ground loops, providing more flexibility and control. Also, isolated inputs are an important safety feature.