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
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> 1000 m current profiling range
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Stand-alone and online applications
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Concurrent high-resolution and long-range measurements
Usage
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Observing deep-ocean current profiles
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Current measurements for deep-water meteorological buoys
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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.
| 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) |
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
