Data logging refers to the process of recording data and storing it on a storage medium.
If you combine a data logger with certain hardware, such as sensors, you can also record the data over a period of time. These data can be for example temperatures, humidity, voltages, etc. Data logging serves as a basis for monitoring and optimizing systems, or for estimating demand and invoicing.
Water books must be kept for water bodies according to § 87 of the Water Resources Act (WHG).
The following items must be entered:
- Permits issued according to WHG
- Old rights and old powers
- Planning decisions and planning approvals
- Water protection areas – risk areas
- Established flood plains
In most federal states, the lower water authorities are responsible for keeping the water books in Germany. An exception is North Rhine-Westphalia, where the district governments keep the respective water book.
Water level data logger
In terms of pump control, water level data loggers are of particular interest. They record, for example, filling levels or temperatures at specified measuring times. Such data loggers are used, among other things, for groundwater wells and in technical environments.
Targeted data logging provides information about the consumption and performance of the technology, but can also provide information about the general environment of streams, rivers or lakes. Last but not least, data loggers in combination with level sensors provide the basis for billing of consumables.
Multi-channel data logger
Multi-channel data loggers open up numerous application possibilities. They collect data from several measuring points at a central location and can store it. In addition, a multi-channel data logger allows the billing of signals. As part of the process technology, it can also be involved in the control of the plant.
For later evaluation, it is possible to connect the device to a PC and visualize the data logging. There are various applications for this purpose.
For data logging of special measured values there is the possibility to combine the data logger and the corresponding sensor in one device. For example, temperatures can be recorded over a longer period of time without much technical effort.
An important issue with any data logger is memory security. Simple sensor loggers usually use power-independent storage media, while larger systems use centralized storage with backup.