PLS
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.
Application: Surface water, Groundwater
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: Yes
- FEATURES
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- 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)
- Specs
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•SPECIFICATIONS
Water level measurement Measurement range 0 … 4 m, 10 m, 20 m, 40 m, 100 m Accuracy SDI-12 ±0.05 % FS (linearity and hysteresis) 4 … 20 mA ±0.1 % FS (linearity and hysteresis) 10 ppm/°C at 20 °C
Resolution (SDI-12) 0.001 m; 0.1 cm; 0.01 ft; 0.1 mbar; 0.001 psi Temperature compensated working range -5 °C … +45 °C (ice-free) Temperature measurement range -25 °C … +70 °C (ice-free) Resolution 0.1 °C / 0.1 °F Accuracy ±0.5 °C / ±0.9 °F Electrical data Available interfaces (use as required) 4 … 20 mA, SDI-12, RS485 (via SDI-12 protocol) Supply voltage +9.6 … +28 V DC, typically 12/24 V DC Power consumption (SDI-12) Sleep <600 mA Active <3.6 mA Pressure sensor (capacitive pressure sensor) ceramic, temperature compensated, overload safe for up to 5 times the measuring range without permanent mechanical damage Temperature sensor NTC Dimensions 195 mm x 22 mm Weight approx. 0.3 kg Environmental conditions Operating temperature -25 … +70 °C Storage temperature -40 … +85 °C Materials Housing stainless steel 1.4539 (904L) resistant to sea water Seals Viton Cable jacket PUR Protection type IP68 Mechanical Strength meets the mechanical shock tests of IEC 68-2-32 EMC limits CE conformity; EN 61000-4-2/3/4/5/6 and EN 61000-6-3 Class B are adhered to - Downloads
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Brochures 
brochure-88.pdf Download now Manuals 
PLS-Manual.pdf Download now Additional files 
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