Data Logger Dipper-APT Absolute Pressure

Data Logger Dipper-APT Absolute Pressure

Category: Groundwater – Data Logger

High-performance 32 bit measurement data collector with an absolute pressure sensor for measuring points prone to over-flooding and for swelling pressure measurements at great depths
Precise, long-life, stable ceramic-capacitive absolute pressure sensor, for measuring ranges up to max. 20 bar, NTC30 temperature sensor with an 0.3 °C (standard) or 0.1 °C (optional) accuracy
Sturdy, sleek Ø 22 mm stainless-steel case
XL ring memory for approximately 1.120.000 measurement data
Replaceable lithium batteries for about 8-10 years service life
Operation with notebook, tablet, PC, smartphone or tablet via Bluetooth (optional)
Air pressure compensation with additional Baro-Dipper and Software DEMASdb
Modularly expandable with a data transmission module SlimCom

Category: Hydrology Tags: data logger, hydrology

Data Logger Dipper-APT Absolute Pressure

Benefits

High-performance: 32-bit microprocessor with 16 MB of memory for 1.120.000 readings

Virtually maintenance free: No battery replacement necessary, no running operational costs

Slim: Installation using 1″ tube diameter (probe)Installation using 1″ tube diameter (probe)

Accurate and reliable:

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

Robust: Stainless steel housing 1.4404 (standard) or 1.4539 (option) for use in extreme conditions (landfill sites, contaminated, brackish water, etc.)

Flood-proof: Pressure-tight housing (IP68) suitable for measuring points that are regularly flooded. The barometric pressure compensation is carried out in conjunction with a synchronized clocked Baro-Dipper.

Variable: Suspension with Kevlar or steel cable (standard), multi-core special measuring cable with the RS485 interface (optional).

User-friendly: Two clever APPs are available for configuration and data read-out of the Dipper-APT. Operating software for beginners SEBAConfig (Windows) a user-friendly interface (Wizard) for various routine tasks. SEBAConfigApp (Android, iOS) combined with SEBA BlueCon 2 enables convenient communication via Bluetooth between a smartphone or tablet with a logger.

Modular: Using the pluggable data transmission module SlimCom together with the Dipper-APT (special cable version) allows the system to convert into an online station.

Application

Environmental monitoring in groundwater and surface water monitoring stations with risk of flooding, in addition to upland and lowland moors
Monitoring of swelling pressure stations and measuring points with large measuring range fluctuations

Accessories

Operating software: SEBAConfig (Windows), SEBAConfigApp (Android, iOS)

Operating Unit: HDA-Pro HDA Tablet

Data readout: Dual Converter (USB, RS485), BlueCon (Bluetooth®), RS485

External power supply: Power Pack

Remote data transmission: SlimCom

Measuring device protection: SEBA Bearing Tube Closure with a safety lock

Evaluation software: DEMASvis

Archiving Software: DEMASdb

Specifications

Parameters: Water level [hPa], [cm], [m]

Sensor: Absolute Pressure Sensor

Measurement principle: Capacitive with ceramic measurement cell

Measuring range: 0-2 /1/4/5/20/40/100/200 m water column or according to specifications

Measuring accuracy: ±0.05 % FS

Long-term stability: ±0.1 %/ year

Parameters: Water temperature [°C]

Sensor: NTC30 with polynomial linearisation

Measurement principle: NTC resistance

Measuring range: -5 °C – +50 °C

Measuring accuracy: 0,3 °C Standard, 0,1 °C Option

Logger Controller: 32Bit 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 1s in quick-log mode, option

Channels: max. 32 (e.g. water level, temperature, battery voltage)

Measurement routines: Single value, average value, event clock, Delta mode, pumping test control

Communications Interface: RS485

Operation: Dual converter (USB / RS232), BlueCon (Bluetooth®)

Power supply: 2 x 3.6 V lithium AA-size batteries

Service Life: 8 years at 60 min intervals

Housing Material: 1.4404 Standard, 1.4539 Option

Dimensions: Ø 22 mm, length: 300 mm

Protection class: IP68

Operating temperature: -20 °C – +70 °C (non-freezing)

Hanging depth: Up to 1000 m

Unit suspension: With Kevlar cable: None (default), With round cables:

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

Cable: Kevlar cable (standard), Screened special measuring cable with RS485 interface (option)