Sea-Bird Electronics SBE 49 FastCAT Manuale utente

SBE 49 FastCAT

Conductivity, Temperature, and Pressure Sensor

with RS-232 Interface

If deploying vertically, intended for deployment in orientation shown

(sensors at top) for proper pump operation

User’s Manual

Sea-Bird Electronics, Inc.

1808 136th Place NE

Bellevue, Washington 98005 USA

Telephone: 425/643-9866

Fax: 425/643-9954

E-mail: seabir[email protected] Manual Version #009, 08/04/05

Website: www.seabird.com Firmware Version 1.2 and later

Limited Liability Statement

Extreme care should be exercised when using or servicing this equipment. It should be used or serviced

only by personnel with knowledge of and training in the use and maintenance of oceanographic

electronic equipment.

SEA-BIRD ELECTRONICS, INC. disclaims all product liability risks arising from the use or servicing

of this system. SEA-BIRD ELECTRONICS, INC. has no way of controlling the use of this equipment

or of choosing the personnel to operate it, and therefore cannot take steps to comply with laws

pertaining to product liability, including laws which impose a duty to warn the user of any dangers

involved in operating this equipment. Therefore, acceptance of this system by the customer shall be

conclusively deemed to include a covenant by the customer to defend, indemnify, and hold SEA-BIRD

ELECTRONICS, INC. harmless from all product liability claims arising from the use or servicing of

this system.

Table of Contents

Section 1: Introduction........................................................................ 5

About this Manual .............................................................................................5

How to Contact Sea-Bird...................................................................................5

Quick Start.........................................................................................................5

Unpacking FastCAT ..........................................................................................6

Section 2: Description of FastCAT..................................................... 7

System Description............................................................................................7

Specifications.....................................................................................................9

Dimensions and End Cap Connector ...............................................................10

Data I/O ...........................................................................................................11

Section 3: Power and Communications Test................................... 12

Software Installation........................................................................................12

Test Setup ........................................................................................................12

Test ..................................................................................................................13

Section 4: Deploying and Operating FastCAT................................ 17

Sampling Modes..............................................................................................17

Polled Sampling........................................................................................18

Autonomous Sampling .............................................................................19

Real-Time Data Corrections ............................................................................21

Baud, Cable Length, and Data Transmission Rate...........................................22

Power and Cable Length for FastCAT without Deck Unit..............................23

Command Descriptions....................................................................................24

Data Output Formats........................................................................................31

OUTPUTFORMAT=0 (raw data in Hexadecimal) ..................................31

OUTPUTFORMAT=1 (engineering units in Hexadecimal).....................31

OUTPUTFORMAT=2 (raw data in decimal)...........................................32

OUTPUTFORMAT=3 (engineering units in decimal).............................32

Optimizing Data Quality..................................................................................33

FastCAT Orientation and Pump Use........................................................33

Positioning Relative to Other Instruments................................................34

Profiling Speed .........................................................................................34

Temperature Equilibration........................................................................34

Setup for Deployment......................................................................................35

Deployment......................................................................................................36

Acquiring and Processing Data with SEASAVE and SBE Data Processing...37

Verifying Contents of .con File ................................................................37

Acquiring Real-Time Data with SEASAVE.............................................38

Processing Data with SBE Data Processing .............................................39

Acquiring Real-Time Data with ROV, AUV, etc. for

Processing by Sea-Bird Software.....................................................................40

Recovery..........................................................................................................41

Section 5: Routine Maintenance and Calibration........................... 42

Corrosion Precautions......................................................................................42

Connector Mating and Maintenance................................................................42

Conductivity Cell Maintenance .......................................................................43

Pressure Sensor Maintenance ..........................................................................43

Replacing Optional Anti-Foulant Devices – Mechanical Design Change.......44

Replacing Optional Anti-Foulant Devices (SBE 49).......................................44

Replacing Optional Anti-Foulant Devices (SBE 49).......................................45

Sensor Calibration............................................................................................47

Table of Contents

Section 6: Troubleshooting................................................................ 49

Problem 1: Unable to Communicate with FastCAT ........................................49

Problem 2: Unreasonable Data ........................................................................49

Problem 3: Salinity Lower than Expected .......................................................50

Glossary .............................................................................................. 51

Appendix I: Functional Description and Circuitry......................... 52

Sensors.............................................................................................................52

Sensor Interface ...............................................................................................52

Appendix II: Electronics Disassembly/Reassembly........................ 53

Appendix III: Command Summary................................................. 54

Appendix IV: AF24173 Anti-Foulant Device .................................. 56

Appendix V: Real-Time Data Correction Algorithms.................... 60

Aligning Data...................................................................................................60

Filtering Data...................................................................................................62

Applying Conductivity Cell Thermal Mass Correction to Data.......................62

Appendix VI: Replacement Parts..................................................... 63

Index.................................................................................................... 65

Section 1: Introduction

This section includes contact information, Quick Start procedure, and photos

of a standard FastCAT shipment.

About this Manual This manual is to be used with the SBE 49 FastCAT Profiler Conductivity,

Temperature, and Pressure Sensor.

It is organized to guide the user from installation through operation and data

collection. We’ve included detailed specifications, command descriptions,

maintenance and calibration information, and helpful notes throughout

the manual.

Sea-Bird welcomes suggestions for new features and enhancements of our

products and/or documentation. Please e-mail any comments or suggestions to

[email protected].

How to Contact Sea-Bird Sea-Bird Electronics, Inc.

1808 136th Place Northeast

Bellevue, Washington 98005 USA

Telephone: 425-643-9866

Fax: 425-643-9954

E-mail: [email protected]

Website: http://www.seabird.com

Business hours:

Monday-Friday, 0800 to 1700 Pacific Standard Time

(1600 to 0100 Universal Time)

Except from April to October, when we are on summer time

(1500 to 0000 Universal Time)

Quick Start Follow these steps to get a Quick Start using the FastCAT. The manual

provides step-by-step details for performing each task:

1. Test power and communications (Section 3: Power and

Communications Test).

2. Deploy the FastCAT (Section 4: Deploying and Operating FastCAT):

A. Establish setup and sampling parameters.

B. Install I/O cable connector and locking sleeve. Connect other end of

cable to computer/controller and to power supply.

C. Verify hardware and external fittings are secure.

D. Remove caps from end of T-C Duct and pump exhaust.

E. Apply power.

•If AUTORUN=Y, FastCAT will start sampling automatically.

•If AUTORUN=N, send START to start sampling.

F. Deploy FastCAT.

Section 1: Introduction

Unpacking FastCAT Shown below is a typical FastCAT shipment.

Spare o-ring and

hardware kit (includes

tee exhaust for slow

profiling applications)

Conductivity cell

cleaning solution

(Triton-X)

Software, and Electronic Copies of

Software Manuals and User Manual

I/O cable

Conductivity cell filling

and storage kit

25-pin to 9-pin adapter

(for use with computer

with DB-25 connector)

SBE 49

FastCAT

FastCAT User Manual

SBE 49 FastCAT

Section 2: Description of FastCAT

This section describes the functions and features of the SBE 49 FastCAT,

including specifications, dimensions, connector, and communications.

System Description

The SBE 49 FastCAT is an integrated CTD sensor intended for towed vehicle,

ROV, AUV, or other autonomous profiling applications in marine or fresh-

water environments at depths up to 7000 meters (22,900 feet). The FastCAT’s

pump-controlled, TC-ducted flow minimizes salinity spiking, and its 16 Hz

sampling provides very high spatial resolution of oceanographic structures

and gradients.

The FastCAT’s temperature thermistor and conductivity cell are the same as

used in our premium 911plus CTD system. Its pressure sensor (offered in eight

full scale ranges from 20 to 7000 dbars) is the superior, micro-machined,

silicon strain-gauge recently developed by Druck, Inc. Sophisticated interface

circuitry provides very high resolution and accuracy — entirely comparable to

the 911plus.

The FastCAT is an easy-to-use, light, and compact instrument ruggedly made

of titanium and other low-maintenance (plastic) materials; it is well suited to

even the smallest vehicle. There are straightforward commands for continuous

(full rate or averaged) or single sample acquisition. EEPROM-stored

calibration coefficients permit data output in ASCII engineering units

(degrees C, Siemens/m, decibars, Salinity [PSU], and sound velocity [m/sec]),

or the user can select raw data output if desired.

The FastCAT is externally powered, and its data is telemetered by its RS-232C

interface. The FastCAT has no memory or internal batteries, and does not

support auxiliary sensor inputs.

The FastCAT samples in two modes:

•Autonomous sampling –The FastCAT runs continuously, sampling at

sixteen scans per second (16 Hz). It can be set to average up to

255 samples, transmitting only the averaged data. Programmable real-time

processing – aligning, filtering, and correcting data for conductivity cell

thermal mass effects – provides high quality data for applications where

post-processing is not feasible. The FastCAT can be programmed to begin

autonomous sampling when power is applied or on command.

•Polled sampling – On command, the FastCAT takes one sample and

transmits the data.

A standard FastCAT is supplied with:

•Titanium housing for depths to 7000 meters (22,900 feet)

•Strain-gauge pressure sensor

•Integrated T-C Duct

•Internal pump for flow-controlled conductivity and temperature response

•XSG 4-pin I/O bulkhead connector

•Straight pump exhaust fitting, providing high quality data for

most applications

•Pump exhaust tee fitting, for slow profiling applications – tee fitting is

included in spares kit that ships standard with FastCAT, and can be easily

substituted for the standard straight pump exhaust fitting in the field

Note:

The FastCAT’s pump is not designed

to be used to pump water through

other sensors. Other sensors

requiring pumped water need a

separate pump.

If deploying

vertically,

intended for

deployment

in orientation

shown

(sensors

at top) for

proper pump

eration

Section 2: Description of FastCAT

FastCAT options include:

•Plastic housing for depths to 350 meters (1150 feet) in lieu of

titanium housing

•MCBH Micro wet-pluggable connector in lieu of XSG connector

•Anti-foulant device fitting and expendable Anti-Foulant Devices for

long deployments

The FastCAT can be used with the SBE 36 CTD Deck Unit and Power Data

Interface Module (PDIM) to provide power and real-time data handling

capability over single-conductor sea cables. The PDIM is a small pressure

housing that is mounted on or near the FastCAT. The PDIM:

•Converts power from the sea cable to + 15 VDC power for the FastCAT.

•Interfaces two-way RS-232 communications from the FastCAT to the

telemetry used on the sea cable. The PDIM converts FastCAT data into

single-wire telemetry for transmission over long (10,000 meter

[32,800 feet]) sea cables.

See the SBE 36 / PDIM manual for system operating details.

The FastCAT is supplied with a powerful Win 95/98/NT/2000/XP software

package, SEASOFT-Win32, which includes:

•SEATERM - terminal program for instrument setup and communication.

•SEASAVE - program for real-time acquisition and display of data.

SEASAVE can be used for real-time data acquisition only if the FastCAT

is directly connected to the computer (not connected to an AUV,

ROV, etc.).

•SBE Data Processing - program for calculation and plotting of

conductivity, temperature, pressure, and derived variables such as salinity

and sound velocity.

Notes:

•Help files provide detailed

information on the use of

SEATERM, SEASAVE, and

SBE Data Processing.

•Separate software manuals on

CD-ROM provide detailed

information on the use of

SEASAVE and SBE Data

Processing.

•Sea-Bird also supplies a

DOS software package,

SEASOFT-DOS. However, the

DOS software is not compatible

with the FastCAT.

Note:

When using the FastCAT with the

SBE 36 and PDIM, SEASAVE (our

real-time data acquisition software)

does not allow acquisition of NMEA

or Surface PAR data.

Section 2: Description of FastCAT

Specifications

Temperature

(°C) Conductivity

(S/m) Pressure

Measurement

Range -5 to +35 0 to 9

0 to full

scale range:

20 / 100 / 350 /

600 / 1000/

2000 / 3500 /

7000 meters

(expressed in

meters of

deployment depth

capability)

Initial

Accuracy 0.002 0.0003 0.1% of

full scale range

Typical

Stability

(per month) 0.0002 0.0003

0.004% of

full scale range

Resolution 0.0001

0.00005

(oceanic waters;

resolves 0.4 ppm

in salinity)

0.00007

(high salinity waters;

resolves 0.4 ppm

in salinity)

0.00001

(fresh waters;

resolves 0.1 ppm

in salinity)

0.002% of

full scale range

Sensor

Calibration

(measurement

outside these

ranges may be at

slightly reduced

accuracy due to

extrapolation

errors)

+1 to +32

0 to 9; physical

calibration over

the range 2.6 to

6 S/m, plus zero

conductivity (air)

Ambient

pressure to full

scale range in

5 steps

Power

Requirements

0.75 Amps at 9-24 VDC

Turn-on transient: 750 mA

Sampling and transmitting data (includes pump):

390 mA at 9 V

285 mA at 12 V

180 mA at 19 V

Housing

Material Standard: 3AL/2.5V Titanium

Optional: Plastic

Depth Rating Standard: 7000 meters (22,900 feet)

Optional: 350 meters (1150 feet)

Weight

Standard Titanium Housing -

In air: 2.7 kg (6 lbs) In water: 1.4 kg (3 lbs)

Optional Plastic Housing -

In air: 1.8 kg (4 lbs) In water: 0.5 kg (1 lb)

Section 2: Description of FastCAT

Dimensions and End Cap Connector

FastCAT with straight exhaust

(as shipped by Sea-Bird)

FastCAT with tee exhaust for

slow profiling applications

(tee is in spare parts kit

shipped with FastCAT, and is

easily substituted in the field)

Align with

raised bump on

connector

3 4

Standard Connector

XSG-4-BCL-HP-SS

Pin Description

1 Ground

2 RS-232C Receive from computer

3 RS-232C Transmit to computer

4 Power (9-24 VDC)

3 2

Optional MCBH Connector

MCBH-4MP (WB), TI

(3/8” length base, ½-20 thread)

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