(-) input terminal and to connect the current output out of the 420 (+) terminal. The device that accepts the 4-20 mA current signal must reference the same negative supply listed above (see diagram below). The cabling should be shielded and twisted to minimize EMI interference. Its shield should be connected at either. Flowline enables industrial manufacturers, chemical distributors, municipalities and energy or food providers to safely and efficiently manage their contained liquid and solid assets. Our quality solutions measure tank inventories, automate tank processes, ensure workplace safety and protect the environment.
This issue is caused when Microsoft Windows does not properly detect the chipset or videodisplay.
Corrupt or missing motherboard or chipset drivers
Download and install the latest chipset and video card drivers. If you or someone you know built your computer, it came with the motherboard CD. This CD contains the chipset drivers. Otherwise, you can find drivers for all the major chipsets on our motherboard drivers page.
Flowline Port Devices Driver Updater
Corrupt or missing video card drivers
If installing the latest chipset or motherboard drivers doesn't resolve your issue, make sure you have the latest drivers installed for your video card. For a listing of video card drivers, see our video card drivers page.
Other PCI device that Windows cannot identify
Flowline Port Devices Driver Ed
If you tried the above two steps and your Windows Device Manager still contains an Unknown PCI device, likely the device cannot be identified.
If you that the device not being identified is installed, we suggest you obtain the latest drivers for that device. A listing of drivers is on our drivers page.
If you have recently finished installing or reinstalling Windows onto the computer and are getting the unknown PCI device, we suggest you manually identify the PCI device through the registry.
Additional information
- See the PCI and drivers definition for further information and related links.