Signature55 2
Signature55 1
Signature55 3
Nortek People Signature55 55K Hz Shipping
Nortek People Signature55 55K Hz Testing 1
Signature55 2
Signature55 1
Signature55 3
Nortek People Signature55 55K Hz Shipping
Nortek People Signature55 55K Hz Testing 1

Ocean currents

Signature55

> 1000 m current profiling range for stand-alone and online applications

Overview

The Signature55 ADCP is a current profiler that combines an ultralong range with a compact layout. Novel ADCP transducer design allows 1000 m profiles concurrent with slightly shorter-range, finer resolution measurements using two different frequencies in the same instrument. The more than 90% lower power consumption (compared to similar ADCPs) also permits long-duration deployments operating on internal batteries only.

  • Currents

Highlights

  • > 1000 m current profiling range
  • Stand-alone and online applications
  • Concurrent high-resolution and long-range measurements

Usage

  • Observing deep-ocean current profiles
  • Current measurements for deep-water meteorological buoys
  • Fine and coarse deep-water current profiles

Setup

The Signature Deployment software guides users through setup to ensure all measurement schemes are handled correctly and makes certain all users can fully utilize the capabilities of the long-range ADCP.

Deployment

The Signature55 offers dependable buoy and bottom frame setups from Nortek and leading industry partners tailored for the instrument. Up to 90% lower power consumption compared to similar ADCPs means this low-power, long-range ADCP can operate on internal batteries alone during long deployments.

Data

Ethernet and serial communications options make both online and stand-alone applications possible. Ocean Contour is a powerful postprocessing software created specifically for the AD2CP platform.

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Maximum profiling range*

1000 m (55 kHz), 600+ (75 kHz)

Cell size

5-20 m

Minimum blanking

2 m

Maximum number of cells

200

Velocity range (along beam)

User-selectable 1 or 5.0 m/s

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

1 Hz (1/3 Hz at max power)

  • Maximum range depends on transmit power and acoustic scattering conditions

Velocity range

N/A

Cell size

N/A

Profiling range

N/A

Range velocity limitations

N/A

Single

Average

Concurrent

N/A

Alternate

Single (coarse/fine)

  • US Patent 8223588

Sampling

Same as velocity

Resolution/ dynamic range

0.5 dB / 70 dB

Transducer acoustic frequency

55 and 75 kHz

Number of beams

3, slanted at 20°

Beam width

4.5°-5.5°

Resolution

N/A

Number of bins

N/A

Transmit pulse length

N/A

Transmit pulse

N/A

Resolution / dynamic range

N/A

AST frequency

N/A

AST max distance

N/A

Maximum wave measurement depth

N/A

Height range

N/A

Accuracy/resolution (Hs)

N/A

Accuracy/resolution (Dir)

N/A

Period range

N/A

Cut-off period (Hs)

N/A

Cut-off period (dir)

N/A

Sampling rate (velocity and AST)

N/A

Parameters

N/A

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 min

Compass:

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 3D

Up or Down

Automatic detect

Pressure:

Piezoresistive (sampled at meas. rate)

Standard range

0-1500 m (inquire for options)

Accuracy/precision

0.1% FS / Better than 0.002% of full scale

Accelerometer dynamic range

± 2 g

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)*, ± 0.5° (static, ±30°)

Heading range / resolution

360°, all axis /0.01°

Heading accuracy

± 3° (dynamic)*, ± 2° (static, tilt < 20°)

Sampling rate

Same as measurement rate (up to 1 Hz)

  • Dynamic specifications depends on the type of motion

Capacity

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

Data record

Consult instrument software

Mode

Stop when full

Accuracy

± 1 min/year

Clock retention in absence of external power

1 year. Rechargeable backup battery.

Ethernet

10/100 Mbits Auto MDI-X, TCP/IP, UDP/IP, HTTP protocols, Fixed IP / DHCP client /Auto IP address assignment, UPnP and Nortek proprietary instrument discovery over Ethernet

Serial

Configurable 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

Depending on configuration

MCBH6F (Ethernet), MCBH8F (serial), MCBH2F-G2 (pwr), optional Souriau M-series metal connector for online use (14M)

Functions

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

DC input

15-48 V DC

Maximum peak current

1.5 A

Max. average consumption at 1 Hz

15 W

Typical average consumption*

2 W

Sleep consumption

100 μA, power depending on supply voltage

Transmit power per beam

4-250 W, adjustable levels

Ping sequence

Multiplexing or parallel

  • 10 min. avg. profile, 1 cm/sec hor. Prec., Max cell size, max power, long range mode. Consult SW for other configurations

Internal

One or two 540 Wh alkaline or 1800 Wh lithium

Duration

Depending on configuration, consult software

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

1500 m

Standard model

POM with titanium fasteners. Reinforced polyurethane transducer cups

Maximum diameter

648 mm

Maximum length with room for internal batteries

547 mm (1 battery), 747 mm (2 batteries)

Maximum length without room for internal batteries

314 mm

In air, no battery

65.5 kg

In water, no battery

25.1 kg

Battery

10.0 kg (2 x 540 Wh), 5.8 kg (2 x 1800 Wh)

Signature 55 On-Line General Arrangement - NGA061-004 Rev.-
Signature 55 Stand-Alone- General Arrangement - NGA061-005 Rev.A

Declaration of conformity
Pressure test cerifications
Statement of compliance
Vibration test

Signature55

3x55 kHz transducer head

Long (for two internal batteries or one battery and DSL)

Medium (for one internal battery or DSL modem)

Short (no internal batteries or DSL modem)

16 GB SD card data logger

64 GB

Pressure sensor, 0-100 m, 0,1%

Pressure sensor, 0-1000m, accuracy 0,1% of FS

Pressure sensor, 0-1500m, accuracy 0,1%

10m Ethernet cable with MCIL6MP, Power/RJ45 at dry end

10-100m Ethernet cable (specify length in comments field) with MCIL6MP-PWR/RJ45

10m Serial RS232 cable, MCIL8MP-DB12

10m Serial RS232 cable, MCIL8MP-DB9 w/RS485 trigger

Serial RS422 cable >10m (specify length in comments field), MCIL8MP-DB9

Online cable, Souriau 10M open ended, (specify length in comments field)

Online cable, Souriau 10M PWR/RJ45, max 100m, (specify length in comments field)

Compass and tilt sensor

AHRS

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