OCEANOGRAPHY

11/09/2024

Signature 250 - 300 m

Intermediate current profiling range that includes wave height/direction
and ice tracking capability

The Signature 250 ADCP is a medium-range current profiler with a suite of extra features. It has a current profiling
range of 200 m, and can measure wave height, period and direction at depths as great as 150 m. The Signature
250 ADCP can also measure acoustic ranging to ice. Its compact design and low power consumption make it anideal tool for long-term deployments in all waters.

HighlightsApplications

200 m current profiling range

Ice drift and draft measurements

Wave height and direction from 150 m

Long-term deployments requiring directional

installation depth

wave measurements and mid-depth current

Acoustic ranging to ice

profilesUpwelling and downwelling, large-scale
mixing studies

Technical specifications
Water velocity measurements
Maximum profiling range

200 m

Cell size

1-8 m

Minimum blanking

0.5 m

Maximum number of cells

200 (average)

Velocity range (along beam)

User-selectable 2.5 or 5.0 m/s

Velocity range (horizontal)±10 m/s (typical) ±20 m/s (upon request)

Minimum accuracy

1% of measured value ± 0.5 cm/s

Velocity precision

Broadband processing, consult instrument software

Velocity resolution

0.1 cm/s

Max sampling rate

3 Hz (1 Hz at max power)

HR option (on 5th beam only)
Velocity range

N/A

Cell size

N/A

Profiling range

N/A

Range velocity limitations

N/A

AD2CP Measurement modes
SingleAverage

Concurrent

Average and waves/ice

Alternate

N/A

Echo Intensity (along slanted beams)
Sampling

Same as velocity

Resolution/ dynamic range

0.5 dB / 70 dB

Transducer acoustic frequency

250 kHz

Number of beams

5; 4 slanted at 20°, 1 vertical at 500 kHz (optional)

Beam width

2.3° (slanted), 2.2° (vertical)

Echo sounder option
Resolution

N/A

Number of bins

N/ATransmit pulse length

N/A

Transmit pulse

N/A

Resolution / dynamic range

N/A

Wave measurement option
AST frequency

500 kHzAST max distance

170 m

Maximum wave measurement depth

150 m

Height range-15 to +15 m

Wave measurement option
Accuracy/resolution (Hs)

< 1% of measured value / 2 cm

Accuracy/resolution (Dir)

2° / 0.1°

Period range

2-50 sCut-off period (Hs)

25 m depth; 2 sec, 50 m depth; 2 sec,100 m depth; 2.2 sec,150 m depth; 2.7 sec

Cut-off period (dir)Please inquire

Sampling rate (velocity and AST)

1 Hz

Ice measurement option
Parameters

Acoustic ranging to ice, speed and direction, echo sounder
dataSensors
Temperature:

Thermistor in head (sampled at meas. rate)

Temp. range-4 to +40 °C

Temp. accuracy/resolution

0.1 °C/0.01 °C

Temp. time response

2 minCompass:

Solid State magnetometer (max 1 Hz sample rate)

Accuracy/resolution

2° for tilt < 30°/0.01°

Tilt:

Solid State accelerometer (max 1 Hz sample rate)

Accuracy/resolution

0.2° for tilt < 30°/0.01°

Maximum tilt

Full 3DUp or Down

Automatic detect

Pressure:

Piezoresistive (sampled at meas. rate)

Standard range

0-300 m (inquire for options)

Accuracy/precision

0.1% FS / Better than 0.002% of full scale

AHRS option
Accelerometer dynamic range±2g

Gyro dynamic range± 250°/sec

Magnetometer dynamic range± 1.3 Gauss

Pitch and roll range / resolution± 90° (pitch) ± 180° (roll) /0.01°

Pitch and roll accuracy± 2° (dynamic)4), ± 0.5° (static, ±30°)

Heading range / resolution

360°, all axis /0.01°

Heading accuracy± 3° (dynamic)4), ± 2° (static, tilt < 20°)

Sampling rate

Same as measurement rate (up to 3 Hz)

Data recording
Capacity

16 GB, 64 GB or 128 GB (inquire for larger capacity)

Data record

Consult instrument software

Mode

Stop when fullReal-time clock
Accuracy± 1 min/yearReal-time clock
Clock retention in absence of external

1 year. Rechargeable backup battery.

power

Data communications
Ethernet10/100 Mbits Auto MDI-X, TCP/IP, UDP/IP, HTTP protocols,Fixed IP / DHCP client /Auto IP address assignment, UPnP andNortek proprietary instrument discovery over Ethernet

SerialConfigurable RS-232/RS-422 300-1250000 bps

Recorder download baud rate

20 Mbit/s (Ethernet only) - 1 GB in 6 minutes

Controller interface

ASCII command interface over Telnet and serial

Connectors
Depending on configuration

MCBH6F (Ethernet), MCBH8F (serial), MCBH2F-G2 (pwr),
optional Souriau M-series metal connector for online use(10M)

SoftwareFunctions

Deployment planning, instrument configuration, data retrieval
and conversion (for Windows®)PowerDC input

15-48 V DC

Maximum peak current

1.5 A

Max. average consumption at 1 Hz

15 W

Typical average consumption

400 mW

Sleep consumption

100 μA, power depending on supply voltage

Transmit power per beam

4-200 W, adjustable levels

Ping sequence

Multiplexing or parallel

Batteries
Internal

540 Wh alkaline or 1800 Wh lithium

Duration

Depending on configuration, consult software

Environmental
Operating temperature-4 to +40 °C

Storage temperature-20 to +60 °C

Vibration

IEC60068-2-64

EMC approval

IEC/EN 61000-6-2, 61000-6-3

Depth rating

300 m

Materials
Standard model

POM with titanium fasteners. Reinforced polyurethanetransducer cups

Dimensions
Maximum diameter

464 mmDimensions
Maximum length with room for internal

523 mmbatteries
Maximum length without room for308 mminternal batteries

WeightIn air, no battery

18.5 kg (17.1 kg short)

In water, no battery

1.5 kg (5.2 kg short)

Battery

5.1 kg (540 Wh), 3.8 kg (1800 Wh)