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SEBA Hydrometrie

Data Logger Dipper-PT Relative Pressure

WaterLevel Measurement & MonitoringData Logger (Water)

High-performance 32 bit measurement data collector optimised for water-level and temperature monitoring in ground and surface waters

Quantity

Overview

High-performance:
32-bit microprocessor with 16 MB of memory for 1,120,000 readings

Virtually maintenance free:
A battery change is not necessary, and so ongoing operating costs are not incurred.

Slim:
Installation using 1" tube diameter (probe)

Smart:
For each measuring task - a suitable measurement routine: single value measurement, average value measurement, event control (swelling mode, Delta Mode), flow calculation (W/Q table, polynomial).

Accurate and reliable:

Water level: 0.05 % Measurement accuracy (= 1 cm at 20 m measuring range)
A wide selection of ceramic capacitive pressure transducers from 0.2 bar to 30 bar
Temperature: 0.3 °C (standard), 0.1 °C (optional)

Robust:
Stainless steel housing 1.4404 (standard) and 1.4539 (option); can also be used under extreme environmental conditions (landfills, contaminated sites, brackish water etc.)

Flood-proof:
2-step, permanent flood protection up to 3 m water column

User-friendly:
Two clever APPs are available for configuration and data read-out of the Dipper-PT. Operating software for beginners SEBAConfig (Windows) a user-friendly interface (Wizard) for various routine tasks. SEBAConfigApp (Android, iOS) and BlueCon 2 (Bluetooth® module) can be conveniently combined for configuration and data collection of Dipper-PT via Bluetooth® with a smartphone or tablet.

Modular:
The data transmission module SlimCom can be combined with Dipper-PT to transmit the data directly to your workstation. For measuring tasks with short recording intervals starting from 1 second (e.g. for pumping tests) the use of an external power pack module is recommended.

Specification

Water Level

Sensor	Relative pressure sensor
Measurement Principle	Capacitive with ceramic measuring cell
Measuring Range	0-2/1/4/5/20/40/100/200/300 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	0,3 °C Standard, 0,1 °C Option

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 (e.g. water level, temperature, battery voltage)
Measurement Routines	Single value, average value, event clock, Delta mode, pumping test control
Communication Interface	RS485 (with protective cap and moisture absorber)
Operation	Interface Converter (RS 485/USB), BlueCon (Bluetooth)

Housing

Material	1.4404 Standard Stainless Steel or 1.4539 High-Grade Stainless Steel (optional)
Dimensions	Ø 22 mm, length: 300 mm
Protection Class	Probe: IP68 RS485 interface: IP67 (immersion depth with a desiccant cartridge up to 3 m, depending on the cable length)

Material

1.4404 Standard Stainless Steel or 1.4539 High-Grade Stainless Steel (optional)

Dimensions

Ø 22 mm, length: 300 mm

Protection Class

Probe: IP68

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

Others

Power Supply	2 x 3.6 V lithium AA batteries
Service Life	> 8 years at 60min intervals
Operating Temperature	-5 °C - +60 °C (non-freezing)
Hanging Depth	Up to 1,000m
Suspension Unit	Independently of the diameter for SEBA caps from the 2" pipe diameter, standard diameter-dependent suspending boards for SEBA caps from 2" pipe diameter, optional
Measuring Device Protection	Protective caps for the RS485 interface (dust and moisture protection)
Cable	Specially reinforced measuring cable with Goretex membrane pressure-compensation line. Desiccant cartridge with silica gel for protection of the pressure-compensation line.

Power Pack

Material	1.4404 standard stainless steel, 1.4539 high-grade stainless steel (optional)
Dimensions	Ø 35 mm, length: 345 mm
Protection Class	IP68
Power Supply	4 x 1.5 V alkaline manganese batteries, standard
Service Life	24 days at 1 second intervals