Dipper-PTEC

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.

High-performance:
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)

Slim:
Installation using 1" tube diameter (probe)

Smart:
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)

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

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

User-friendly:
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.

Modular:

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

 Water Level

Sensor Relative pressure sensor
Measurement Principle Capacitive with ceramic measuring cell
Measuring Range

0-2/5/10/20/30/40/50/70/100/200/300 m water column or according to specifications

Measuring Accuracy ± 0.05% FS
Long Term Stability ±0.1 %/year

 

Water Temperature

Sensor NTC with polynomial linearisation
Measurement Principle NTC resistor
Measuring Range

 

-5 °C - +50 °C

Measuring Accuracy 0.1 °C 
Pressure Range 0-30 bar

 

Conductivity

Sensor 4-electrode measuring cell
Measuring Range

0-200 mS/cm (total)

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

 

Logger

Controller 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
Channels Max. 32 (water level, temperature, conductivity, density, TDS, salinity)
Measurement Routines Single value, average value, event clock, Delta mode, pumping test control
Communication Interface RS485, SDI-12 (option)
Operation Interface Converter (RS 485/USB), BlueCon (Bluetooth)

 

Housing

Material 1.4539 stainless steel
Dimensions 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)

 

Power Pack Module (Pluggable)

Material (Housing) Aluminium
Dimensions Ø 35 mm, length: 345 mm
Protection Class IP68
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)
Cable

Reinforced measuring cable with a pressure compensation line

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

 

Others

Operating Temperature -5 °C - +60 °C (non-freezing)
Hanging Depth Up to 700m