Water Survey Tech

Product Detail

Measuring data logger Dipper-PTEC

  • High-performance 32 bit measurement data collector optimised for water level, temperature and conductivity measurement in ground and surface waters
  • XL ring memory for approximately 1.120.000 measurement data
  • Sturdy, sleek Ø22 mm stainless-steel housing for extreme conditions
  • High-quality 4-electrode conductivity measuring cell
  • Accurate, long-term, stable, ceramic-capacitive pressure sensor
  • NTC30 temperature sensor with 0.1°C accuracy
  • External power pack module with interchangeable 1.5V size C batteries
  • Operation with notebook, tablet, PC, smartphone or tablet via Bluetooth® (optional)
  • Expandable with data transmission module SlimCom

The Data Logger Dipper- PTEC is a Level Pressure probe that measures level based on relative pressure. It measures not only Level but also has a combined Temperature and EC (Electric Conductivity) measurement.
This makes this probe a great solution for e.g. salinity measurements combined with level measurements. One of the applications for this sensor is salt water intrusion measurement in groundwater or surface water.

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32 bit microprocessor with 16 MB of memory for 1,120,000 readings

Low maintenance:
Low operating costs, 1.5 V size C replaceable batteries, without the need to use tools (option: 3.6 V lithium batteries to maximise the service life)

Installation using 1″ tube diameter (probe)

For each measurement task – a suitable measurement routine: single value measurement, average value measurement, event control (swell mode, delta mode), flow calculation (W/Q table, polynomial), calculation and storage of salinity, TDS value and water density.

Accurate and reliable:

  • Conductivity measurement electrode with automatic measuring range switching, for maximum resolution (0-0.2 mS/cm; 0.2-2 mS/cm; 2-20 mS/cm; 20-200 mS/cm)
  • Water level: 0.05 % Measurement accuracy (= 1 cm at 20 m measuring range)

1.4539 stainless steel housing can also be used under extreme environmental conditions (landfill sites, contaminated sites, brackish water etc.)

2-step, permanent flood protection up to 3 m (standard), also available in IP68 (Type Dipper-APT)

Two clever apps are available for configuration and data read-out of the Dipper-PTEC. Operating software for beginners SEBAConfig (Windows) a comfortable user interface (Wizard) for various routine tasks. with SEBAConfigApp (Android, iOS) and the SEBA BlueCon to communicate comfortably wirelessly via Bluetooth with a smartphone or tablet with the logger.


When combined with our data transmission module SlimCom, the Dipper-PT ‘s recorded measurements are transferred remotely to your workstation.

  • Groundwater monitoring in wells, sites in the field and landfill sites
  • Monitoring of pumping tests
  • Level monitoring in surface waters (rivers, streams, channels, sources, flood retention basins, lakes, reservoirs)
  • Swelling pressure measurement
  • Discharge surveillance
Operating software:

SEBAConfig (Windows)

SEBAConfigApp (Android, iOS)

Operating Unit:


Data readout:

Interface Converter (RS 485/USB)

BlueCon (Bluetooth), RS485

Remote data transmission:


Measuring device protection:

SEBA Bearing Tube Closure with a safety lock

Evaluation software:


Archiving Software:



Water level [cm], [m]


Relative Pressure sensor

Measurement principle:

Capacitive with ceramic measuring cell

Measuring range:

0-2/5/10/20/30/40/50/70/100/200 m water column or according to specifications

Measuring accuracy:

±0.05 % FS

Long-term stability:

±0.1 %/year



Water temperature [°C]


NTC30 with polynomial linearisation

Measurement principle:


Measuring range:

-5 °C – +50 °C

Measuring accuracy:

0.1 °C

Pressure Range:

0-20 bar



Conductivity [µS/cm], [mS/cm]

Derived parameters: solutes [g/l], salinity, density [g/l]


4-electrode measuring cell

Measuring range:

0-200 mS/cm (total)

Automatic measuring range switchover: 0-200 µS/cm; 0,2-2 mS/cm; 2,2 mS/cm; 20-200 mS/cm

Measuring accuracy:

± 1 µS/cm for measuring range of 0-200 µS/cm ±0,5 % for measuring range of 0,2-200 mS

Pressure Range:

0-30 bar



32 Bit Flash controller with integrated WatchDog

RTC-IC Real Time Clock

Memory capacity:

16 MB (= 1,120,000 readings)

Save interval:

30 s – 99 hours, standard, from 2 s in the quick-log mode, optionally


Max. 32 (water level, temperature, conductivity, density, TDS, salinity)

Measurement routines:

Single value, average value, event clock, Delta mode, pumping test control


RS485, SDI-12 (option)


Interface Converter (RS 485/USB)

BlueCon (Bluetooth)



1.4539 stainless steel


Ø 22 mm, length: 320 mm

Protection class

Probe: IP68

RS485 interface: IP67 (immersion depth with a desiccant cartridge up to 3 m, depending on the cable length)


Operating temperature:

-5 °C – +60 °C (non-freezing)


Hanging depth:

up to 700 m


Power pack module (pluggable)



Length: 345 mm, Ø 35 mm

Protection class:


Power supply:

4 x 1.5 V alkaline manganese batteries, standard

4 x 3.6 V lithium C batteries, optional

Suspension unit:

Diameter-independant for SEBA caps starting from a 2″ pipe diameter, standard

Diameter-dependent insert panels for SEBA caps starting from a 2″ pipe diameter, optional

Measuring device protection:

Protective caps for the RS485 interface (dust and moisture protection)



Reinforced measuring cable with a pressure compensation line

Gore-tex membrane, desiccant cartridge with SilicaGel for protection of the pressure compensation line