The RheoTune and DensiTune P provide a proven track record in measuring In-situ density and yield strength profiles in (semi-) fluid muds. World-wide numerous harbour authorities rely on the Tune systems to keep their ports accessible at minimum dredging costs. The Tune family has recently been extended with the DensiTune P. A highly portable system to quickly obtain in-situ density profiles wherever you need them and from whatever platform.

www.stema-systems.nl

Tune® Systems

Stema Systems, the specialist in fluid mud and silt measurement systems, has succeeded in implementing the theoretical background of tuning fork technology into a hand on measurement device. Accurate In-situ density and yield-strength profiles are obtained virtually calibration free. An easy to use interface and compact size are valued. With the DensiTune P the portability has been further enhanced by a lighter housing and wifi data transmission.

Key benefits Calibration free density and yield-strength Viscosity and dry solid calculation Light weight probes for easy operation and transport Ethernet data transmission (DensiTune: wifi) to laptop/ Windows-tablet

The RheoTune and DensiTune P are versatile systems to be operated from the smallest vessel. To increase productivity an automated electrical winch or manual light weight winch with slip ring are available.

The Tune systems are optimized to integrate with the SILAS seismic profiling system. The DensiTune P is especially suited for periodical calibration of this density mapping system.

AreAs of ApplicAtion Assurance of nautical accessibility of your harbour Calibration of Silas acoustic density mapping system Water bottom stability assessment in coastal studies Managing filling quantities in disposal area’s Monitoring of siltation quantities and fluid loads in hopper bins

Fluid mud density and rheometry

www.stema-systems.nl

stemA systems | t +31 (0)345 580 395 | info@stemA-systems.nl

Intelliwinch automated winch system

Manual data winch with slipring

Silas acoustic density mapping system

optionAl products:

Tune® SystemsFluid mud density and rheometry

System DensiTuneP RheoTune

Output parameters Density, Density, Temperature, Temperature, Depth (P) Depth (P) Optional: Yield- Yield strength, strength, Viscosity, Viscosity Dry Solids Dry Solids

Density Accuracy <1% of density (Newtonian fluid) Resolution 1 gr/l Range 1000 – 1500 gr/l (semi fluid materials with Bingham yield strength < 1 kPa) [RheoTune: to 1800 gr/l with adapted calibration]

Yield Accuracy Ca. 5% of Yield strengthStrength Resolution 1 Pa[Bingham] Range 0 – 500 Pa

Viscosity Accuracy Depending on site calibration* Resolution 1 Pa s Range 0 – 600 Pa s

Temp Accuracy 1% FS Resolution 1 deg C Range 0 – 60 deg C

Depth Accuracy 0,15 % of depth 0,15 % of depth Resolution 0,01 m 0,01 m Range 0 – 30 m 0 – 60 m

Housing Probe Polyamide / Stainless steel stainless steel (IP68, 250m) (IP68, 40m) Control box Plastic case (IP65) Plastic box (IP65)

Dim. Probe: 45 x 15 cm 65 x 15 cm Transport case: 65 x 52 x 35 cm 85 x 72 x 46 cm

Weight Probe: 5 kg (+max 5 kg 15 kg (+ 9 kg weight optional) weight optional) Transport: 19 kg (excluding 30 kg (excluding extra weight) extra weight)

Power Input 24 V DC, 35 W 110/220 V AC, 35W

Output Type UDP, Ethernet + UDP, Ethernet Wi-Fi Update rate 20 Hz 20 Hz

* Viscosity is a derived parameter from density based on a roto visco laboratory test for site specific material

specificAtions

RheoEdit user interface