









CURRENT PROFILER
Signature55
> 1000 m current profiling range for stand-alone and online applications
Need Help? Get in touch.
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.
Highlights
- > 1000 m current profiling range
- Stand-alone and online applications
- Concurrent high-resolution and long-range measurements
Applications
- Observing deep-ocean current profiles
- Current measurements for deep-water meteorological buoys
- Fine and coarse deep-water current profiles
-
-
Toggle all
-
Water velocity measurements
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 -
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*
Single Average Concurrent N/A Alternate Single (coarse/fine) * US Patent 8223588 -
Echo intensity (along slanted beams)
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° -
Echo sounder option
Resolution N/A Number of bins N/A Transmit pulse length N/A Transmit pulse N/A Resolution / dynamic range N/A -
Wave measurement option
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 -
Ice measurement option
Parameters N/A -
Sensors
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 -
AHRS option
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 -
Data recording
Capacity 16 GB, 64 GB or 128 GB (inquire for larger capacity) Data record Consult instrument software Mode Stop when full -
Real-time clock
Accuracy ± 1 min/year Clock retention in absence of external power 1 year. Rechargeable backup battery. -
Data communications
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 -
Connectors
Depending on configuration MCBH6F (Ethernet), MCBH8F (serial), MCBH2F-G2 (pwr), optional Souriau M-series metal connector for online use (14M) -
Software
Functions Deployment planning, instrument configuration, data retrieval and conversion (for Windows®) -
Power
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 -
Batteries
Internal One or two 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 1500 m -
Materials
Standard model POM with titanium fasteners. Reinforced polyurethane transducer cups -
Dimensions
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 -
Weight
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)
-
-
-
Toggle all
-
Technical drawings
-
Approvals
-
-
-
Toggle all
-
Main product
01
Signature55
-
Probe type / Head
01
3x55 kHz transducer head
-
Housing
01
Long (for two internal batteries or one battery and DSL)
02
Medium (for one internal battery or DSL modem)
03
Short (no internal batteries or DSL modem)
-
Memory
01
16 GB SD card data logger
02
64 GB
-
Pressure sensors
01
Pressure sensor, 0-100 m, 0,1%
02
Pressure sensor, 0-1000m, accuracy 0,1% of FS
03
Pressure sensor, 0-1500m, accuracy 0,1%
-
Cables
01
10m Ethernet cable with MCIL6MP, Power/RJ45 at dry end
02
10-100m Ethernet cable (specify length in comments field) with MCIL6MP-PWR/RJ45
03
10m Serial RS232 cable, MCIL8MP-DB12
04
10m Serial RS232 cable, MCIL8MP-DB9 w/RS485 trigger
05
Serial RS422 cable >10m (specify length in comments field), MCIL8MP-DB9
06
Online cable, Souriau 10M open ended, (specify length in comments field)
07
Online cable, Souriau 10M PWR/RJ45, max 100m, (specify length in comments field)
-
Other
01
Compass and tilt sensor
02
AHRS
-