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.
| *Parameters Measured | Water Level Pressure Temperature |
| Body material | Stainless steel 1.4539 (904L) resistant to sea water |
| Calibrated Range | +41 – +113 °F (+5 – +45 °C) |
| Interface | RS485 (via SDI-12 protocol) |
| Level Accuracy | ±0.05 % FS (linearity and hysteresis); Measuring range 0 – 13 ft, 0 – 33 ft water column: – Accuracy for ≤ 10 ft. (3 m): ±0.01 ft – Meets USGS OSW Requirements for Accuracy |
| Measuring Range | 0 – 13 ft (0 – 4 m) |
| Operating Temperature Range | +23 – +113 °F (-5 – +45 °C) (ice-free) |
| Power Consumption | Sleep: ≤ 600 µA Active: ≤ 3.6 mA |
| Power Supply | 9.6 – 28 V DC, typically 12/24 V DC |
| Protection Class | IP 68 |
| Resolution | 0.01 ft; 0.001 psi (0.001 m; 0.1 cm; 0.1 mbar) |
| Standard storage temperature | -40 – +185 °F (-40 – +85 °C) |
| Temperature Accuracy | ±0.9 °F (±0.5 °C) |
| Temperature Range | -13 – +158 °F (-25 – 70 °C) (ice-free) |
| Temperature Resolution | 0.01 °F (0.01 °C) |
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