OCEANOGRAPHY

11/10/2024

Signature 500 - 300 m

Mean currents and turbulence, plus wave height, direction and ice tracking

The Signature 500 ADCP is designed for flexibility. It measures current profiles at up to 8 Hz sampling frequency. It
can also measure direct vertical velocity profiles, wave height and direction, and acoustic ranging to ice. The
center beam also functions as a biological echosounder, enabling high-resolution measurements of biomass in thewater column. All these features can be combined using Nortek’s patented concurrent mode technology.

Highlights

Applications

Five beams for mean currents andSimultaneous current and turbulenceturbulence

studies at up to 70m range

Wave height and direction

Sediment transport studies or biomass

Acoustic ranging to ice

estimates using optional scientificechosounder
Buoy-mounted measurements in highenergy areas with optional AHRS for motion
correction
Wave measurements and ice monitoring
using acoustic surface tracking (AST)Technical specifications
Water velocity measurements
Maximum profiling range1)

60 m (burst mode), 70 m (average mode)

Cell size

0.5-4 m (5m upon request)

Minimum blanking

0.5 m

Maximum number of cells

256 (burst)/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

0.3% of measured value ± 0.3 cm/s

Velocity precision

Broadband processing, consult instrument software

Velocity resolution

0.1 cm/s

Max sampling rate

8 Hz (4 Hz using 5 beams)

HR option (on 5th beam only)
Velocity range

N/A

Cell size

N/A

Profiling range

N/A

Range velocity limitationsN/A

AD2CP measurement modes
SingleBurst or average

Concurrent

Burst and average

Alternate

Single and/or concurrent

Echo intensity (along slanted beams)
Sampling

Same as velocity

Resolution/ dynamic range

0.5 dB / 70 dB

Transducer acoustic frequency

500 kHz

Number of beams

5; 4 slanted at 25°, 1 verticalBeam width

2.9°

Echo sounder option
Resolution

6 mm - 0.5 m

Number of bins

11,000Transmit pulse length

32 μs - 1 ms

Transmit pulse

Monochromatic or pulse compressed (25% BW)

Resolution / dynamic range

0.01 dB / 70 dB

Wave measurement optionAST frequency

500 kHzAST max distance

75 m

Maximum wave measurement depth

60 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

1-50 sCut-off period (Hs)

5 m depth; 0.6 sec, 20 m depth; 1.1 sec, 60 m depth; 1.9 sec

Cut-off period (dir)

5 m depth; 1.5 sec, 20 m depth; 3.1 sec, 60 m depth; 5.5 sec

Sampling rate (velocity and AST)

4 Hz

Ice measurement option
ParametersAcoustic 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 samplerate)

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

0-100 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 8 Hz)

Data recording
Capacity

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

Data record

Consult instrument software

ModeStop 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
Ethernet

10/100 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 serialConnectors
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 retrievaland conversion (for Windows®)

PowerDC input

12-48 V DC

Maximum peak current

1.5 A

Max. average consumption at 1 Hz

8 W at 1 Hz, Ethernet adds 0.75 W

Typical average consumption

25 mW

Sleep consumption

100 μA, power depending on supply voltage

Transmit power per beam

0.3-30 W, adjustable levels

Ping sequence

ParallelBatteries
Internal

180 Wh alkaline, 540 or 1800 Wh with long canister

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 (for 6000 m version, contact Nortek for specifications)

Materials
Standard model

POM with titanium fasteners

Dimensions
Maximum diameter

228 mmMaximum length with room for internal

274 mm (180 Wh), 464 mm (540 Wh or 1800 Wh Li)

batteries

Dimensions
Maximum length without room for

184 mminternal batteries

WeightIn air, no battery

6.4 kg (5.2 kg short)

In water, no battery-0.35 kg (0.6 kg short)

Battery

1.8 kg