- The OTT PLS measures water level, depth to water, or pressure by means of an integrated controller and ceramic pressure-measuring cell. Design features such as multiple communication outputs (SDI-12 or 4 ... 20 mA), stainless steel housing, and a rugged cable make this sensor ideal for monitoring water level in a variety of applications.
- Measurement technology: Vented pressure cell
- Parameters measured: Water level, Pressure, Temperature
- Product Highlights: Water level and temperature measurement - for use with external data logger
- Measurement range: 0 … 4, 10, 20, 40, and 100 m
- Accuracy: ± 0.05% FS
- Internal data logger: No
- Interface: SDI-12, RS-485 (using SDI-12), or 4 … 20 mA
- The robust ceramic pressure cell offers industry-leading accuracy and does not deform over time like membrane technology, providing long-term measurement stability
- Rugged design: Ceramic pressure cell resistant to physical force (5 x burst pressure) and enclosure made of high-quality saltwater resistant steel for use in coastal environments
- Built-in microcontroller – compensates for temperature effects and applies correction values for gravitational acceleration and water density
- Vented pressure probe, automatically compensates for changes in barometric pressure
- Robust cable with Kevlar core for length stabilization and capillary tube for venting
- Simple setup and connection to external dataloggers using SDI-12 or 4 ... 20 mA interfaces
- Optimized resolution is achieved by assigning the 4 ... 20 mA to that part of the measuring range that is actually required
- Water temperature output in addition to water level (for SDI-12 output)
- Measuring water level in surface and groundwater, including:
+ Stations with sloping bottom, e.g. water banks
+ Small diameter pipes or holes (from 1" Ø)
+ Dams, weirs, irrigation systems
+ Waterways that occasionally ice over
+ Brackish water, saltwater
+ Waterways that do not contain water throughout the year (e.g. retaining basins)