OEL (Optical Encoder Limnigraph)

It is the float-type limnigraph that has been used for years by the
customers of Aquadata Elektronik.

• Optical encoder limnigraphs are used for water level measurements in rivers,
  dams, lakes, irrigation canals, flood control, wastewater management, coastal
  design, and environmental studies.
• The electronic limnigraph, which has a mini-computer feature, automatically
  records the water level measurement at the desired logging interval into memory and transfers this data via the RS-232 output of the limnigraph to a laptop, flash card, or a remote computer if a modem is connected.
• The data logger can display the data in Excel and text file format via a computer program. These data can be viewed graphically through the software.
• Water level, date, time, battery life, Min-Max level, setup information, serial number, and alarm status can be read from the display.
• The system uses a lithium battery as a power source. In this way, it can operate without the need for an external power source for up to 10 years if no modem is used.

• If a modem is used for remote data acquisition in the system, depending on the data acquisition interval, the battery of the limnigraph lasts 1 or 2 years.
• In case of a power outage, the Data Logger retains the stored data.
  When power is restored, the old data can be retrieved accurately.
• There is no deviation in the date and time in case of power failure in the Data Logger.
• Thanks to the backup battery inside the Data Logger, the date and time continue to progress normally.
  When power returns, it continues recording from where it left off.