The groundwater data logger OTT Orpheus Mini – based on a vented pressure probe – has been designed for the reliable monitoring and storage of water level and temperature for the water management. The main application of OTT Orpheus Mini is the installation in groundwater pipes and wells. In addition, the application in open waters and tanks is possible.
OTT Orpheus Mini is equipped with a rugged, ceramic-capacitive measuring cell and a precise temperature sensor. A data logger, which can be configured individually, stores and manages the monitored measured values in a 4 MB non-volatile memory (corresponds to approx. 500,000 measured values). The connexion for data retrieval and start-up and the power supply of the OTT Orpheus Mini are provided by the communication unit.
The kevlar-reinforced pressure probe cable with pressure compensation capillary in combination with a desiccant cartridge prevents reliably measuring errors by compensating barometric pressure fluctuations.
When downloading data the data logger transfers the measured values via a RS-485 connexion to the communication unit, which establishes a non-contact transmission of the data via infrared interface (IrDA) to the reading unit or notebook.
Power supply can optionally be provided by Lithium batteries (min. 5 years operating time/1 h measurement interval) or Alkaline batteries (min. 1.5 years operating time/1 h measurement interval). The batteries can easily be changed on site.
Various adapter plates and a suspension bracket allow a very easy and fast installation in well pipes of 1" to 6" diameter. From a pipe diameter of 2" control measurements via contact gauge are possible without removing the groundwater data logger.