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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
  • 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

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 µA

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


Documents
Brochure
Manual
Additional
Related Categories
Dataloggers
Aqualab Systems
Water Level Sensors