Nortek Signature250 250k Hz sideview 5 transducer
Signature250 2
Signature250 3
Nortek awac being deployed
Nortek Signature250 250k Hz sideview 5 transducer
Signature250 2
Signature250 3
Nortek awac being deployed

Oceanography

Signature250

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

  • 200 m current profiling range
  • Wave height and direction from 150 m installation depth
  • Acoustic ranging to ice

Overview

The Signature250 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 Signature250 ADCP can also measure acoustic ranging to ice. Its compact design and low power consumption make it an ideal tool for long-term deployments in all waters.

  • Currents
  • Waves

Highlights

  • 200 m current profiling range
  • Wave height and direction from 150 m installation depth
  • Acoustic ranging to ice

Usage

  • Ice drift and draft measurements
  • Directional wave measurements
  • Mid-depth current profiles
  • Studies of tidal currents
  • Plankton migration studies
  • Upwelling and downwelling studies
  • Large-scale mixing studies
  • Suitable for wave buoys

Setup

The Signature Deployment software guides users through setup to ensure even the most detailed concurrent measurement schemes are handled correctly and makes certain all users can fully utilize the capabilities of the Signature250 ADCP.

Deployment

The Signature250 offers dependable buoy and bottom frame setups from Nortek and leading industry partners tailored for the instrument. Optional AHRS updated at the same rate as sampling improves motion correction during buoy-mounted measurements.

Data

Concurrent measurement plans enable simultaneous measurements of long-range current profiles and ice tracking. Ocean Contour is a powerful postprocessing software created specifically for the AD2CP platform.

Download PDF

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
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)

Velocity range N/A
Cell size N/A
Profiling range N/A
Range velocity limitations N/A

Single Average
Concurrent Average and waves/ice
Alternate N/A

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)

Resolution N/A
Number of bins N/A
Transmit pulse length N/A
Transmit pulse N/A
Resolution / dynamic range N/A

AST frequency 500 kHz
AST max distance 170 m
Maximum wave measurement depth 150 m
Height range -15 to +15 m
Accuracy/resolution (Hs) < 1% of measured value / 2 cm
Accuracy/resolution (Dir) 2° / 0.1°
Period range 2-50 s
Cut-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

Parameters Acoustic ranging to ice, speed and direction, echo sounder data

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 0-300 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)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)

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 (10M)

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 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

Internal 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 300 m

Standard model POM with titanium fasteners. Reinforced polyurethane transducer cups

Maximum diameter 464 mm
Maximum length with room for internal batteries 523 mm
Maximum length without room for internal batteries 308 mm

In air, no battery 18.5 kg (17.1 kg short)
In water, no battery 1.5 kg (5.2 kg short)
Battery 5.0 kg (540 Wh), 2.9 kg (1800 Wh)

Signature 250 General Arrangement - NGA061-001 Rev.-

Vibrations test of Signature250
Declaration of conformity
Statement of compliance

Signature250

5-beam head (adds 500 kHz vertical transducer)

4-beam head

Standard, with room for 540 Wh battery

Short, no room for battery

16 GB SD card data logger

64 GB SD card data logger

Pressure sensor, 0-10 m, 0,1%

Pressure sensor, 0-20 m, 0,1%

Pressure sensor, 0-30 m, 0,1%

Pressure sensor, 0-50 m, 0,1%

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

Pressure sensor, 0-200m, 0,1%

Pressure sensor, 0-500m, 0,1% (Note: instrument depth rating is 300m)

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)

5-beam head (adds 500 kHz vertical transducer)

Compass and tilt sensor

AHRS

Data visualization and processing software for AD2CP. Request quote for license

Virtual COM port driver to allow Nortek's serial-to-USB converters to function.

Recommended upgrade. New features, fixes and functionality

Deployment software for all Signature series instruments as an installer file. You may download it now and install later if needed. Use the Help menu "Check for updates" function to get the latest firmware and software versions. Should a 32bit be required it may be downloaded here.

The installer file of Signature Deployment as available through Microsoft Store. Use the Help menu "Check for updates" function to get the latest firmware and software versions.

Deployment software for all Signature series instruments available through Microsoft Store. Use the Help menu "Check for updates" function to get the latest firmware and software versions.

Data viewer and post-processing software for Signature series instruments.

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