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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
  • 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

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 mS/cm or ±1.5 % of measured value (whichever is higher)

Unit

mS/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


Documents
Brochure
Manual
Related Categories
Water Quality Multiprobes
Dataloggers
Aqualab Systems
Telemetry