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PLS C
Its extremely low power consumption makes it ideal for long-term deployment, particularly at solar powered measuring stations for ground-and surface waters.
Application: Surface water, Groundwater
Measurement technology: Vented pressure cell and 4-electrode graphite conductivity cell
Parameters measured: Water level, Pressure, Conductivity, Temperature
Product Highlights: Water level, temperature, and conductivity measurement – for use with external data logger
Internal data logger: No
Interface: SDI-12 or RS-485 (using SDI-12)
Water level, temperature, and conductivity measurement of:
Groundwater wells
Streams, rivers, channels, and canals
Reservoirs, lakes, and wetlands
Ideal for monitoring:
Continuous monitoring networks
Short-term or long-term projects
Salt water intrusion
Aquifer storage and recovery
Estuaries and wetlands
- FEATURES
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- Outputs for conductivity include specific conductivity, salinity, and total dissolved solids
- 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 (4 x burst pressure) and enclosure made of high-quality saltwater resistant steel for use in coastal environments
- Vented pressure probe, automatically compensates for changes in barometric pressure
- Robust cable with Kevlar core for length stabilization and capillary tube for venting
- Built-in microcontroller – compensates for temperature effects and applies correction values for gravitational acceleration or water density
- Simple setup and connection to external dataloggers using SDI-12
- Specs
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•SPECIFICATIONS
Output parameters Water level/pressure, temperature, specific conductivity, salinity, TDS Water level measurement (pressure) Pressure sensor ceramic, temperature-compensated Measuring range 0 … 4 m, 0 … 10 m, 0 … 20 m, 0 … 40 m, 0 … 100 m water col. Resolution 0.001 m; 0.1 cm; 0.01 ft; 0.1 mbar; 0.001 psi Accuracy (linearity + hysteresis) ≤ ± 0.05 % FS Long-term stability (linearity + hysteresis) ≤ ± 0.1 %/a FS Zerodrift ≤ ± 0.1 % FS Pressure sensor capability to withstand overloads without permanent mechanical damage ≥ 4 x measuring range Temperature-compensated operating range -5 °C … +45 °C (ice free) Units m, cm, ft, mbar, psi Temperature measurement Sensor NTC Measuring range -25 °C … +70 °C (ice free) Calibrated range +5 °C … 45 °C Resolution 0.01 °C Accuracy ±0.1 °C Units °C, °F Conductivity measurement Sensor 4 graphite electrodes Calibrated range +5 °C … 45 °C Measuring range 5 … 2.000 µS/cm Resolution 1µS/cm Accuracy ±1 µS/cm or ± 0.5 % of measured value (whichever is higher) Unit µS/cm Measuring range 0.1 … 100 mS/cm Resolution 0.01 mS/cm Accuracy ± 0.01 µS/cm or ±1.5 % of measured value (whichever is higher) Unit µS/cm Options Temperature compensation, conductivity freshwater, saltwater, standard method 2510, ISO 7888/EN27888 Salinity calculation Standard method or USGS 2311 Electrical data Supply voltage 6 … 27 V DC, typically 12/24 V DC Power consumption SDI-12 Sleep-Mode <30 µAV SDI-12 Active-Mode <32 mA Interfaces SDI-12, RS-485 (SDI-12 protocol) Mechanical data Dimensions Probe (Ø x h) 317 mm x 22 mm Cable length SDI-12: 1 … 100 m RS-485: 1 … 1000 m
Material Housing material probe POM, stainless steel(DIN 1.4539, 904 L ), resistant to sea water Cable jacket PUR Weight Probe approx. 0.43 kg Probe cable approx. 82 g/m Ambient conditions Storage temperature – 40 °C … + 85 °C Type of protection Probe: IP 68 EMC limits EG 2004/108/EG, EN 61326-1:2013 - Downloads
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Brochures 
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