Sound Velocity Sensors and Profilers

Midas SVX2

Fitted With a 0.01% Pressure Sensor as Standard, the SVX2 Also Uses Synchronised Sampling to Ensure Perfect Profiles

Some users need superior Sound Velocity data from an SVP with the Salinity and Density data from a CTD.

Valeport Limited

Totnes, GB

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Description

So, Valeport has come up with the unique MIDAS SVX2 that combines both technologies to give the best of both worlds. Since the digital time of flight SV sensor is the most accurate in the world, it’s also possible to compare the actual sound velocity data with that generated by commonly used equations.

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Specifications

General: Diameter [mm]

88

Height [mm]

665

Weight in air [kg]

11.5

Weight in water [kg]

8.5

Material

Titanium housing, polycarbonate & compositesensor components, stainless steel (316) cage.

Temperature, Depth and other Sensors: Temperature sensor

Y

Temperature resolution [°C]

0.005

Temperature measurement accuracy [%]

0.01

Pressure sensor

Y

Pressure resolution [%]

0.01

Pressure measurement accuracy [%]

0.01

GPS sensor

N

Other sensors

Conductivity Sensor: 0 to 80 mS/cm with a resolution of 0.003mS/cm.

Power: Min. operating power [V]

30

Max. operating power [V]

9

Max power consumption [W]

0.7

Battery

Y

Battery type

8 x C cells, 1.5v alkaline or 3.6v lithium

Max. operation time on one battery [hr]

250

Environmental: Max. operating depth [m]

6000

Max. pressure [bar]

600

Operating temperature: min. [°C]

-20

Operating temperature: max. [°C]

80

Data/Software specifications: Connectors

RS232, RS485

Internal Memory [MB]

16

Software solution

Y

Output data/formats

The instrument will operate autonomously, with setup and dataextraction performed by direct communications with PC before and after deployment. It also operates in real time, with a choice of communication protocols (RS232, RS485)for a variety of cable lengths, all fitted as standard and selected by pin choice on the output connector.

Internal memory

Y

Type of internal memory

16 - 64Mb Solid state non-volatile FLASH memory.

Sound Velocity: Sample rate [Hz]

1, 2, 4 or 8Hz

Range min. value [m/s]

1375

Range max. value [m/s]

1900

Sound Velocity Performance: Resolution [m/s]

0.001

Accuracy [m/s]

0.02

Operation Characteristics: Accessories

MIDAS SVX2 Profiler, supplied with deployment cage, Subcon switch plug, 3m communications lead, USB adaptor, DataLog X2 software, manual , tool kit and transit case.

Calibration procedure

Consult factory or via authorised third party calibration facility

Anti-fouling methods

Not required