Valeport SWiFT SVP, SWiFTplus Operating Manual

SWiFT SVP & SWiFTplus Operating

Manual

Operating Manual

Document Ref: Date:

This document was prepared by the staff of Valeport Limited, the Company, and is the property of the Company, which also owns the copyright therein. All rights conferred by the law of the copyright and by virtue of international copyright conventions are reserved to the Company. This document must not be copied, reprinted or reproduced in any material form, either wholly or in part, and the contents of this document, and any method or technique available therefrom, must not be disclosed to any other person whatsoever without the prior written consent of the Company.

Valeport Limited St Peters Quay Totnes Devon, TQ9 5EW

United Kingdom As part of our policy of continuous development, we reserve the right to alter, without prior notice, all

specifications, designs, prices and conditions of supply for all our equipment.

0660879e July 2019

Tel: e mail: Web:

+44 1803 869292 sales@valeport.co.uk | support@valport.co.uk www.valeport.co.uk

Table of Contents

..................................................................................................................................... 41. EU Declaration of Conformity - CE Marking

..................................................................................................................................... 62. Important Information

..................................................................................................................................... 73. SWiFT SVP - Sound Velocity Profiler

..................................................................................................................................... 84. SWiFTplus - SVP profiler with Optical Sensor

..................................................................................................................................... 95. Sensors

.................................................................................................................................... 95.1. Sound Velocity Measurement

.................................................................................................................................... 95.2. Temperature

.................................................................................................................................... 95.3. Pressure Sensor

.................................................................................................................................... 105.4. Optical Sensors

5.4.1 Fluorometers

5.4.2 Turbidity

5.5.1 Calculated Conductivity

5.5.2 Calculated Salinity

5.5.3 Calculated Density

.................................................................................................................................... 10

.................................................................................................................................... 13

.................................................................................................................................... 145.5. Calculated Parameters

.................................................................................................................................... 14

..................................................................................................................................... 156. Physical Characteristics

.................................................................................................................................... 156.1. Dimensions - SWiFT SVP

.................................................................................................................................... 156.2. Dimensions - SWiFTplus

..................................................................................................................................... 167. Communications

.................................................................................................................................... 167.1. Interfacing to a PC

7.1.1 USB Communications

7.1.2 Bluetooth Communications

.................................................................................................................................... 16

.................................................................................................................................... 18

.................................................................................................................................... 217.2. Configuration

..................................................................................................................................... 228. Rechargeable Battery

.................................................................................................................................... 238.1. Charging

8.1.1 Charging Status

8.1.2 Charging from a Laptop USB Port

8.3.1 Lithium Ion Battery Certification

.................................................................................................................................... 24

.................................................................................................................................... 248.2. Battery Life Expectancy

.................................................................................................................................... 248.3. Shipping Your SWiFT with Lithium Ion Batteries

.................................................................................................................................... 25

..................................................................................................................................... 269. Operation

Page 2

.................................................................................................................................... 289.1. Operational Modes

.................................................................................................................................... 309.2. Optical Sensor Test- SWiFTplus

.................................................................................................................................... 329.3. Tare

.................................................................................................................................... 329.4. Do Not Deploy Flag

.................................................................................................................................... 329.5. Low Power Mode

Table of Contents

9.5.1 Low Power Mode Detail

.................................................................................................................................... 33

.................................................................................................................................... 359.6. Status Message

.................................................................................................................................... 369.7. Data File

.................................................................................................................................... 379.8. Data File Translation

.................................................................................................................................... 379.9. Real Time Data Format

.................................................................................................................................... 389.10. Care and Maintenance

.................................................................................................................................... 389.11. Software

..................................................................................................................................... 3910. Upgrading Your SWiFT

.................................................................................................................................... 3910.1. Valeport SWiFT - Firmware Upgrade

.................................................................................................................................... 4010.2. Step 1 - Download the Required Files

.................................................................................................................................... 4110.3. Step 2 - Update the Firmware

.................................................................................................................................... 4510.4. Bluetooth Adapter - Re-Program and Pair

..................................................................................................................................... 4811. Ordering and Part Numbers

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0660879e - SWiFT SVP & SWiFTplus Operating Manual

1. EU Declaration of Conformity - CE Marking

Page 4

EU Declaration of Conformity - CE Marking

Please note: Any changes or modifications to the product or accessories supplied, that are not authorised by Valeport Ltd, could void the CE compliance of the product and negate your authority to operate it. This product has demonstrated CE compliance under conditions that include the use of shielded cables. It is important that you use shielded cables compliant with the product’s conformance, to protect from potential damage and reduce the possibility of interference to other electronic devices.

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0660879e - SWiFT SVP & SWiFTplus Operating Manual

2. Important Information

The SWiFT must only be deployed with the suspension spar securely fitted as shown below

Never deploy the instrument with the USB cable connected

In the event that your SWiFT should be required to be disposed of Valeport is WEEE Compliant

For disposal instructions see: https://www.valeport.co.uk/Portals/0/Docs/Valeport-B2B-Compliance.PDF

If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired.

The safety of any system incorporating the equipment is the responsibility of the assembler of the system.

Page 6

SWiFT SVP - Sound Velocity Profiler

Key Features

1. Self contained, sound velocity, temperature and pressure profiling system

1.1. From measured observations conductivity,

salinity and density can be calculated

2. Lithium Ion rechargeable battery

3. Depth rated to 200m

4. LED symbols to identify:

4.1. Instrument status

4.2. Battery Status

4.3. GPS Status

4.4. Bluetooth Status

5. Bluetooth connectivity to PC & iOS App.

6. Automatic reacquisition of Bluetooth connection and file down load on recovery

7. GPS Geo-Location and time

8. Deployment weight that will not interfere with sensor performance

Applications

A shallow water, self contained Sound Speed profiler possible applications include:

1. Coastal, harbour and inland hydrographic survey

2. Sound velocity profiling

2.1. Single Beam echo-sounder

2.2. Multi-Beam echo-sounder

2.3. USBL

2.4. Imaging sonar

3. Lakes, reservoir and river studies

3. SWiFT SVP - Sound Velocity Profiler

Designed from the outset with the intention of a seamless workflow, the SWiFT profiler provides survey-grade sensor technology coupled with the convenience of Bluetooth connectivity and rechargeable batteries. An integral GPS module, to geo-locate each profile, completes the package. Data can be easily and quickly downloaded and reviewed wirelessly, via Bluetooth, using the either Valeport's Connect PC software or the SWiFT App for iOS portable devices and instantly shared, in industry standard SVP formats through email and cloud services. Using the provided USB adapter or cable, Valeport’s Connect software package provides further tools. In addition to the directly measured sound speed, temperature and pressure observations, Conductivity, Salinity and Density are calculated using Valeport’s proprietary algorithm developed from extensive laboratory and field work. With an operational battery life of up to 5 days and the convenience of charging via USB, SWiFT is intended for coastal, harbour and inland hydrographic survey use and offers the highest quality sound velocity profiles in a compact, robust and portable package.

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0660879e - SWiFT SVP & SWiFTplus Operating Manual

Key Features

1. Everything a SWiFT SVP can do plus

2. An optical sensor:

2.1. Turbidity

2.2. Chlorophyll a

2.3. Fluorescein

2.4. Rhodamine

Applications

A shallow water, self contained Sound Speed profiler possible applications include:

1. Coastal, harbour and inland hydrographic survey

2. Turbidity surveys - dredging, pollution, sediment loading

3. Environmental survey - Chlorophyll a, Phycoerythrin

4. Dye tracing surveys - Fluorescein, Rhodamine

5. Sound velocity profiling

5.1. Single Beam echo-sounder

5.2. Multi-Beam echo-sounder

5.3. USBL

5.4. Imaging sonar

6. Lakes, reservoir and river studies

4. SWiFTplus - SVP profiler with Optical Sensor

Extending the SWiFT's functionality still further the SWiFTplus offers all the performance of SWiFT SVP with the addition of an optical sensor.

Page 8

Sensors

Range:

1375 - 1900m/s

Resolution:

0.001m/s

Accuracy:

±0.020m/s

Acoustic Frequency:

2.5MHz

Type:

PRT

Range:

-5°C to +35°C

Accuracy:

±0.01°C

Resolution:

0.001°C

Type:

Strain Gauge

Accuracy:

±0.05% range

Resolution:

0.001% range

5. Sensors

5.1. Sound Velocity Measurement

Utilising Valeport's latest design for the world's most accurate sound velocity sensor, each measurement is made using a single pulse of sound travelling over a precisely known distance, so is independent of the inherent calculation errors present in CTD calculated data. Valeport's unique digital signal processing technique virtually eliminates signal noise, and gives almost instantaneous response; the digital measurement is also entirely linear, giving predictable performance under all conditions.

5.2. Temperature

The SWiFT is fitted with an accurate Platinum Resistance Thermometer (PRT) temperature sensor.

5.3. Pressure Sensor

The SWiFT is supplied with either a 100m or 200m rated piezo-resistive pressure transducer

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0660879e - SWiFT SVP & SWiFTplus Operating Manual

Never look directly into the optical aperture

Performance

Excitation:

470 nm

Detection:

696 nm

Dynamic Range:

0-800 µg/l 2 gain settings: 0-40 and 0-800 (software controlled)

Instrument Detection limit:

0.025 µg/l*

Actual Detection limit:

0.025 µg /l**

Linearity:

0.99 R

Response Time:

0.03 to 2 sec

5.4. Optical Sensors

An optical sensor must be kept clean to operate correctly. Ensure that the SWiFT is powered down before cleaning the sensor.

Use warm soapy water with a soft bristled brush to remove any light fouling. For heavy fouling use a solvent (e.g Isopropyl alcohol) and a soft bristled brush.

Always rinse thoroughly after every use in clean, fresh water.

5.4.1. Fluorometers

5.4.1.1. Safety Statement

A Valeport Fluorometer is classified as Risk Group 1 under standard 62471. As the type is classified as Risk Group 1 solely due to radiation in the visible band a hazard label is not required. However,

· the LED used is in excess of the Exempt Group and that the viewer- related risk is dependent upon how the user installs and operates the equipment.

· the exposure hazard value (EHV) for a Valeport Fluorometer in terms of distance is 320mm.

5.4.1.2. Chlorophyll a

* 3x SD in RO water ** calibrated against Chlorophyll a in acetone solution

Page 10

5.4.1.3. Fluorescein

Performance

Excitation:

470 nm

Detection:

545 nm

Dynamic Range:

0-500 ppb 2 gain settings: 0-25 and 0-500 (software controlled)

Instrument Detection limit:

<0.01 ppb*

Actual Detection limit:

0.03 ppb**

Linearity:

0.99 R

Response Time:

0.03 to 2 sec

Performance

Excitation:

520 nm

Detection:

650 nm

Dynamic Range:

0-1000 ppb 2 gain settings, 0-50, 0-1000 (software controlled)

Instrument Detection limit:

<0.01 ppb*

Actual Detection limit:

0.06 ppb**

Linearity:

0.99 R

Response Time:

0.03 to 2 s

* 3x SD in RO water ** Calibrated against Fluorescein solution

5.4.1.4. Rhodamine

Sensors

* 3x SD in RO water ** Calibrated against Rhodamine solution

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0660879e - SWiFT SVP & SWiFTplus Operating Manual

5.4.1.5. Linear Observation Range

The linear range is the concentration range for which the fluorometer signal is directly proportional to the concentration of the fluorophore. The linear range starts at the minimum detection limit (MDL) and extends to the upper limit of the instrument (dependent on fluorophore properties, optical filters, LED power, sample volume and optical path length).

Valeport Fluorometers have a calibrated linear response for 2 gain settings (e.g. the ranges 0-40 µg/l (G5) and 0800 µg/l (G1) for chlorophyll a). At higher concentrations, unlike analogue devices which generally flat-line at fullscale deflection (e.g. FSD 5V) the fluorometer will continue to output a signal which increases with concentration (i.e. meaningful data), though which is no longer guaranteed to be linear.

At very high fluorophore concentrations, signal quenching can occur, whereby the instrument output does not increase linearly with fluorophore concentration (roll-off) and may decrease at even higher levels.

To perform a quick linearity check, dilute the sample 1:1 with RO water. If the reading decreases by 50%, the sample is in the linear range. If the reading decreases by less than 50% or even increases, the sample is above the linear range.

Page 12

Sensors

Excitation\Detection:

850nm

Linear Range:

Nephelometer 0 to >1 000 NTU - linear response Optical Backscatter: 0 to 4 000 NTU - linear response (>4,000 NTU has a non-linear monotonic response that allows derivation of higher values using look-up tables)

Minimum Detection Level

0.03 NTU Never look directly into the optical aperture

5.4.1.5.1 Quenching

Quenching refers to the reduction in fluorescence of a fluorophore. Several processes can result in quenching:

1. Chloride is known to quench quinine sulphate and Fluorescein. It is, therefore, advisable to prepare any fluorophore solutions with RO* or DI** water.

2. Temperature quenching - as the temperature of the sample increases, the fluorescence decreases, that is, fluorescence is sensitive to temperature. In order to improve accuracy, measure the sample at different temperatures and derive corrections for changes in temperature.

3. Photo-bleaching (or fading) is the (permanent) degradation of a fluorophore molecule by light resulting in lower signal levels. Photo-bleaching is dependent on exposure (intensity of light and duration) and wavelength (UV is more damaging than longer wavelengths). Use of more robust fluorophores is recommended to avoid photo-bleaching.

* Reverse Osmosis ** De-Ionised

5.4.2. Turbidity

Valeport's Turbidity technology is essentially two sensors in one. The first is a “classic” nephelometer, using a 90° beam angle for turbidity levels between 0 and 2000 NTU. The second sensor uses optical backscatter - OBS (~120° beam angle) for turbidity levels beyond 10 000 NTU. Both sensors output data simultaneously, at a programmable rate, so there is no need to switch ranges as conditions vary. Intelligent sampling and the use of a 24 bit ADC eliminates the need to switch gain. The optical head is very compact, measuring just 20mm diameter and is rated to full ocean depth.

5.4.2.1. Safety Statement

The Turbidity sensor is classified EXEMPT under the standard 62471. As a Valeport Turbidity sensor is classified as EXEMPT a hazard label in not required.

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0660879e - SWiFT SVP & SWiFTplus Operating Manual

Type:

Calculated

Accuracy:

±0.05 mS/cm

Resolution:

0.001 mS/cm

Type:

Calculated

Accuracy:

±0.05 PSU

Resolution:

0.001 PSU

Type:

Calculated

Accuracy:

±0.05 kg/m3

Resolution:

0.001 kg/m3

5.5. Calculated Parameters

5.5.1. Calculated Conductivity

From directly measured sound velocity, temperature and pressure, SWiFT calculates Conductivity using a proprietary Valeport algorithm developed from extensive laboratory and fieldwork.

5.5.2. Calculated Salinity

From directly measured sound velocity, temperature and pressure, SWiFT calculates Salinity using a proprietary Valeport algorithm developed from extensive laboratory and fieldwork.

5.5.3. Calculated Density

From directly measured sound velocity, temperature and pressure, Density is calculated using a proprietary Valeport algorithm developed from extensive laboratory and field work.

Page 14

6. Physical Characteristics

Housing & Bulkhead:

Titanium

Deployment Weight:

Stainless Steel

Depth Rating:

200m (Titanium)

Weight: (Titanium Housing)

2.0kg (in air) / 0.9kg (in water)

3.0kg (in air) /1.8kg (in water) with optional Deployment Weight

SWiFTSVP:

6.1. Dimensions - SWiFT SVP

Please refer to Valeport for more detailed dimensions if required.

Physical Characteristics

6.2. Dimensions - SWiFTplus

Please refer to Valeport for more detailed dimensions if required.

Page 15

+ 33 hidden pages

Valeport SWiFT SVP, SWiFTplus Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

1. EU Declaration of Conformity - CE Marking

2. Important Information

SWiFT SVP - Sound Velocity Profiler

4. SWiFTplus - SVP profiler with Optical Sensor

Sensors

5.1. Sound Velocity Measurement

5.2. Temperature

5.3. Pressure Sensor

5.4. Optical Sensors

5.4.1. Fluorometers

5.4.1.1. Safety Statement

5.4.1.2. Chlorophyll a

5.4.1.3. Fluorescein

5.4.1.4. Rhodamine

5.4.1.5. Linear Observation Range

5.4.1.5.1 Quenching

5.4.2. Turbidity

5.4.2.1. Safety Statement

5.5. Calculated Parameters

5.5.1. Calculated Conductivity

5.5.2. Calculated Salinity

5.5.3. Calculated Density

6. Physical Characteristics

6.1. Dimensions - SWiFT SVP

6.2. Dimensions - SWiFTplus