Industrial recorders provide data acquisition and recording by accepting analog voltage, RTD and other inputs which represent process variable conditions such as flow, level, pressure, and temperature.
The results are printed on a paper chart or they are displayed on an LCD screen with paperless recorders. Recorders acan also provide alarm relay outputs if inputs exceed user selected set points. The recorders can also retransmit a process variable via an analog 4-20mA output, and can perform totalizing functions. Some recorders can be used as controllers to provide outputs to control valves and other devices when process inputs differ from set points.
Some recorders can also be built with Ethernet connectivity with support for common protocols to provide networking to a lare area network, or the world wide web. For date export, a SD card or USB flash storage capability is available on some models.