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Thermo Scientific Sarasota 200 User Manual

Ultrasonic multipath flowmeter
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Sarasota 200
Ultrasonic Multipath Flowmeter
User Guide
P/N HB-S200
Revision A
Part of Thermo Fisher Scientific

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Summary of Contents for Thermo Scientific Sarasota 200

  • Page 1 Sarasota 200 Ultrasonic Multipath Flowmeter User Guide P/N HB-S200 Revision A Part of Thermo Fisher Scientific...
  • Page 3 Sarasota 200 Ultrasonic Multipath Flowmeter User Guide P/N HB-S200 Revision A...
  • Page 5 ©2007 Thermo Fisher Scientific Inc. All rights reserved. All trademarks are the property of Thermo Fisher Scientific Inc. and its subsidiaries. Thermo Fisher Scientific (Thermo Fisher) makes every effort to ensure the accuracy and completeness of this manual. However, we cannot be responsible for errors, omissions, or any loss of data as the result of errors or omissions.
  • Page 6 This page intentionally left blank.

  • Page 7: Table Of Contents

    1.2.6 Path configurations 1.2.7 Transducer frequency 1.2.8 Minimum depth of water 1.2.9 Performance estimates 1.3 Implementation of principles in Sarasota 200 SECTION 2 SYSTEM COMPONENTS 2.1 Flowmeter system overview 2.2 Family tree 2.3 Flowmeter contents and options 2.3.1 Flowmeter layout 2.3.2...
  • Page 8 Sarasota 200 Ultrasonic Multipath Flowmeter INDEX SECTION 3 PERIPHERAL EQUIPMENT 3.1 Additional items 3.2 Transducer mounting hardware SECTION 4 INSTALLATION 4.1 Safety 4.2 General 4.3 Unpacking and laying out 4.4 Installing transducer assemblies 4.5 Connecting transducers to flowmeter 4.6 Transducer alignment 4.7 Output connections...
  • Page 9 Sarasota 200 Ultrasonic Multipath Flowmeter INDEX APPENDIX 2 SPECIFICATION A2.1 Enclosure A2.2 Power supply A2.2.1 DC supply A2.2.2 AC power adapter module A2.3.3 Internal battery option A2.3 Electronics A2.4 Transducers A2.4.1 1 MHz A2.4.2 500 kHz A2.4.3 Other frequencies A2.4.4 Transducer cable A2.5 GAFA software...
  • Page 10 Sarasota 200 Ultrasonic Multipath Flowmeter INDEX This page is blank INDEX Page 4 Thermo Fisher Scientific...

  • Page 11: Applications

    INTRODUCTION Applications The Thermo Scientific Sarasota 200 is a velocity x area open channel flowmeter which uses the ultrasonic “time of flight”, also known as the “transit time” method. It is similar to the larger Sarasota 2000 but with fewer ultrasonic velocity paths (up to 4) and just one water channel.

  • Page 12: Principle Of Operation

    Principle of operation 1.2.1 The Standard The Thermo Scientific Sarasota 200 is an ultrasonic “transit time” flowmeter which complies with the International Standard ISO 6416. The UK standard BS 3680 part 3E is identical. The transit time method belongs to the general category of velocity x area methods. A full description of the method and its applications is to be found in the Standard.

  • Page 13: Flow Determination

    The slice widths may be determined by the projected width between the transducers or by a separate table defining the cross section shape. The latter method is used by the Sarasota 200. There are 2 methods, mid section and mean section.

  • Page 14: Mid Section Method

    Sarasota 200 Ultrasonic Multipath Flowmeter INTRODUCTION 1.2.5.1 Mid section method In the mid section method, the slice boundaries are defined by lines mid way between the paths. The slice velocity is taken as that determined by the ultrasonic path within the slice and the slice area as the product of the slice height and the (average) width.

  • Page 15: Mean Section Method

    Sarasota 200 Ultrasonic Multipath Flowmeter INTRODUCTION 1.2.5.2 Mean section method In the mean section method, the slice boundaries are defined by the path heights themselves. The slice velocity is taken as the mean of the upper and lower paths which define the slice boundaries.

  • Page 16: Path Configurations

    This method saves cable but increases path lengths and is very sensitive to misalignment. The Sarasota 200 flowmeter is capable of being configured for these and other situations. For more complex configurations requiring more than 4 paths or compound channels, the Sarasota 2000 offers more flexibility.

  • Page 17: Performance Estimates

    1.3 Implementation of the principles of operation in the Sarasota 200 The principles described in Section 1.2 are used by the Sarasota 200 subject to certain rules as listed below. See also Appendix 1: GAFA Screens that describe in detail how the flowmeter is programmed via a PC.
  • Page 18 Sarasota 200 Ultrasonic Multipath Flowmeter INTRODUCTION Water level • Levels are combined in the following algorithm: Only non-faulty measurements are used. Highest and/or lowest are discarded until 3 remain. The one furthest from the others is discarded leaving 2. The remaining 2 measurements are averaged for arbitrated level if within an acceptable band defined via the PC GAFA software.

  • Page 19: Flowmeter System Overview

    SYSTEM COMPONENTS SYSTEM COMPONENTS Flowmeter system overview • The Thermo Scientific Sarasota 200 is an ultrasonic multi-path flowmeter, which complies with ISO6416. • It employs state of the art technology to achieve excellent performance in conditions which have previously been outside the scope of this type of instrument.

  • Page 20: Family Tree

    Sarasota 200 Ultrasonic Multipath Flowmeter SYSTEM COMPONENTS Family tree The schematic diagram below is an illustration of a four path system. Internal Battery option 11 to 30 V DC External Auxiliary External equipment power depths Power source control Display Central...

  • Page 21: Flowmeter Contents And Options

    Flowmeter SYSTEM COMPONENTS 2.3 Flowmeter contents and options 2.3.1 Flowmeter layout s„˜„™•š„@RPP Fig 1 Sarasota 200 Flowmeter. Front panel view This view of the Sarasota 200 shows: • the LCD display (see section 2.3.2.3) • the cable entry glands at the bottom •...

  • Page 22: Internal Components

    Sarasota 200 Ultrasonic Multipath Flowmeter SYSTEM COMPONENTS Fig 2 Sarasota 200 with lid open showing internal components This view shows the connection panel protruding from the protective cover and the internal battery in the bottom left corner. The connection panel is part of the mother board which contains the input, output and power management functions.
  • Page 23 Sarasota 200 Ultrasonic Multipath Flowmeter SYSTEM COMPONENTS Fig 3. Connection panel - enlarged view. This panel is where all the connections are made and where the power fuses are located. Before making any connections the external power source and the internal battery (if fitted) should be unplugged.

  • Page 24: Power Supply & Internal Battery

    Sarasota 200 Ultrasonic Multipath Flowmeter SYSTEM COMPONENTS 2.3.2 Internal components The enclosure houses the following components • Mother board with power connections, connectors for transducers and peripheral devices. • Internal battery option. • Transducer interface card • Central processor card, with data storage, input/output and communications circuits •...

  • Page 25: Depth Input Signals

    There are 2 analogue output connectors, OUT1 PL18 and OUT2 PL19. The functions to be output and their ranges are programmable. The power for the 4-20 mA loop can be internal, from the Sarasota 200 in which case the outputs are not isolated, or from the external device in which case they are isolated.

  • Page 26: Digital Signal Connections

    Sarasota 200 Ultrasonic Multipath Flowmeter SYSTEM COMPONENTS 2.3.2.1.6. Digital signal connections When in intermittent mode under external control (see Appendix 1, screens), the external controlling device must apply a connection between W and OV of PL12 to switch the Sarasota 200 on.

  • Page 27: Transducer Interface Card (Tif

    2.3.2.5 AC Power adapter module The adapter is an external module. It allows the Sarasota 200 to be operated from AC mains electricity between 90 and 264 Volts and between 47 and 63 Hz. Section 2, SYSTEM COMPONENTS, Page 2-9...

  • Page 28: Ultrasonic Transducers

    The transducers for the Sarasota 200 are “smart”, with local circuits for the drive voltage (HT) generation and the receiver amplifier built in to minimise losses and optimise signal-to-noise ratio.

  • Page 29: Khz Transducers

    The 500 kHz transducer also has a temperature sensor built in allowing water temperature at each transducer to be recorded by the Sarasota 200. 2.4.4 Lower frequency transducers Consult Thermo Fisher Scientific about low frequency transducers for path lengths above 80 metres or where conditions might attenuate higher frequency signals.

  • Page 30: Controls And Displays

    Sarasota 200 Ultrasonic Multipath Flowmeter SYSTEM COMPONENTS Controls and displays Fig 1 shows the layout of the front panel. It contains the liquid crystal display (LCD). Electronic access to the flowmeter is by means of a (laptop) PC via the serial connector locally or remotely via a modem.

  • Page 31: Additional Items

    Sarasota 200 Ultrasonic Multipath Flowmeter PERIPHERAL EQUIPMENT 3 PERIPHERAL EQUIPMENT Additional items A number of additional items will be required to complete a flowmeter system. These may include:- • Hardware to be installed in the channel on which to mount the transducers.
  • Page 32 Sarasota 200 Ultrasonic Multipath Flowmeter PERIPHERAL EQUIPMENT This page is blank Section 3, PERIPHERAL EQUIPMENT, Page 3-2 Thermo Fisher Scientific...

  • Page 33: Safety

    Sarasota 200 Ultrasonic Multipath Flowmeter INSTALLATION INSTALLATION Safety SAFETY NOTICE The installation of the Thermo Scientific Sarasota 200 flowmeter may involve a number of steps which require special skills, training and special equipment. Examples include: • Electrical installation • Working on construction sites •...

  • Page 34: General

    Sarasota 200 Ultrasonic Multipath Flowmeter INSTALLATION General It is usually necessary for some preparatory work to be carried out prior to installation of the flowmeter system. This work is often performed under a separate contract and typically includes:- • Installation of supporting structures for transducer mounts, for example, piles in a river, brackets on concrete channel walls.

  • Page 35: Connecting Transducers To Flowmeter

    Sarasota 200 Ultrasonic Multipath Flowmeter INSTALLATION Connecting transducers to flowmeter Cables for the ultrasonic transducers should be labelled for identification, cut and pulled through the ducts or attached to trays and run back to the flowmeter. Connectors should be fitted to each end according to the instructions supplied with the connectors.
  • Page 36 Sarasota 200 Ultrasonic Multipath Flowmeter INSTALLATION This page is blank Section 4 INSTALLATION Page 4-4 Thermo Fisher Scientific...

  • Page 37: Site Dimensions

    Sarasota 200 Ultrasonic Multipath Flowmeter COMMISSIONING COMMISSIONING Site dimensions If this information is not already available, it will be necessary to carry out a dimensional survey of the installed transducers and the channel in order to programme the flowmeter. It will be necessary to determine the following:- •...

  • Page 38: Outputs

    Sarasota 200 Ultrasonic Multipath Flowmeter COMMISSIONING 5.4.3 Auxiliary levels – analogue input Set the input range. This allows the input to be linearised, but most level devices will be sufficiently linear and only need 2 points to define the input. On the table, define 4 mA as the minimum, 20 mA as the maximum and enter the depth offset (level above datum).

  • Page 39: Calibration/Verification

    Sarasota 200 Ultrasonic Multipath CALIBRATION/ Flowmeter VERIFICATION CALIBRATION/VERIFICATION Flowmeters of this type do not normally require calibration. Exceptions are where there are significant unmeasured areas, for example, behind transducers, or where local conditions might create atypical velocity profiles and a small number of velocity paths are deployed. See Section 1: Introduction and Appendix 3: References.
  • Page 40 Sarasota 200 Ultrasonic Multipath CALIBRATION/ Flowmeter VERIFICATION This page is blank Section 6 CALIBRATION/VERIFICATION Page 6-2 Thermo Fisher Scientific...

  • Page 41: Channel Maintenance

    Sarasota 200 Ultrasonic Multipath Flowmeter MAINTENANCE MAINTENANCE There is little maintenance as such relating to the flowmeter itself. However, the river or channel must be kept free of weed, silt and other obstructions to avoid interruption of the ultrasonic paths or changing the cross section area which would affect the accuracy of flow determination.

  • Page 42: Routine Checks

    Sarasota 200 Ultrasonic Multipath Flowmeter MAINTENANCE Routine checks 7.3.1 Remote Remote checks of operation of all velocity paths and depths are easily carried out via GAFA. It is recommended that a monthly routine should be set up to handle this.

  • Page 43: Appendix

    Sarasota 200 Ultrasonic Multipath Flowmeter APPENDIX 1 GAFA PC SOFTWARE APPENDIX 1 “GAFA” PC SOFTWARE A1.1 Screen organisation chart A1.2 Main Screen File A1.3 View A1.4 Config A1.5 Log A1.6 Waveform A1.7 Password Help A1.3.1 A1.4.1 A1.5.1 A1.6.1 Enter Password Flow &...

  • Page 44: Appendix

    Sarasota 200 Ultrasonic Multipath Flowmeter APPENDIX 1 GAFA PC SOFTWARE A1.2 Main Screen Notes • This is the main screen showing current measurements and status. • Measurements displayed on this screen are subject to averaging as set up on the “Station Configuration - System”...

  • Page 45: Appendix

    Sarasota 200 Ultrasonic Multipath Flowmeter APPENDIX 1 GAFA PC SOFTWARE A1.3 “View” Screens A1.3.1 (View) Flow and Level Notes • “Instantaneous” data is based on the measurement cycle of 10 seconds or 1 minute as set on the “Station Configuration – System” screen A1.4.1.1.

  • Page 46: Appendix

    Sarasota 200 Ultrasonic Multipath Flowmeter APPENDIX 1 GAFA PC SOFTWARE A1.3.2 (View) Velocity Paths Notes • “Success” indicates the proportion of “flights” of sound pulses resulting in acceptable signals received. • “VOS” is the velocity of sound measured by each path. It is the path length divided by the transit time.
  • Page 47 Sarasota 200 Ultrasonic Multipath Flowmeter APPENDIX 1 GAFA PC SOFTWARE A1.3.3 (View) Flow Meter Status Notes • “Software IDs” are the issue numbers of the software loaded on the system cards • “CPU Power Rails” show the values of the internal supply voltages.
  • Page 48 LCD by clicking on “Edit Display List” (see picture, right) • “Reset Totals” clears the cumulative flow total. • Write selection to Sarasota 200 by clicking “Write to Gauge”. • Additional data is for changing the password (See A1.7) and altering the date format.
  • Page 49 Fixed for a channel where the depth does not change, e.g a full pipe. • Click on “Write” to confirm selected levels to the Sarasota 200. • Click on “Exit” to abandon selection. • See “Channel Configuration – Level” A1.4.2.3 to set up the selected levels.
  • Page 50 “Zero” and “Full Scale” • Click on “Write” to confirm selected analogue outputs to the Sarasota 200. • Click on “Loop Test” to obtain pop up (right). • Select output 1 or 2 and the value of mA to be applied to the output for test purposes.
  • Page 51 • Click on “Reset Relays” to clear all the relays which have been set to “Latching”. • Click on “Write To Gauge” to confirm selections to the Sarasota 200 or “Cancel” to abandon. Appendix 1 GAFA PC Software Page A1-9...
  • Page 52 • Use this screen to set up the serial ports. • Click on “Write To Gauge” to confirm selections to the Sarasota 200 or “Cancel” to abandon. • When the modem comms configuration is changed, the dial-up connection will be lost and it will be necessary to re-dial to re-establish comms.
  • Page 53 “Channel Configuration – Level” screens A1.4.2.2 and A1.4.2.3. • If the “Mean Bed Level” datum is used, the Sarasota 200 sets the “Bed Level” to zero. All path heights and depth offsets must be specified relative to the Mean Bed Level via “Channel Configuration –...
  • Page 54 Minimum submersion is the water height above a path required to allow it to operate. A value will be offered by the Sarasota 200 according to calculations as defined in Section 1, but may be changed, for example if the water surface is likely to be rough.
  • Page 55 • Click on “Read Path Stats” to view the autogain statistics. This is for diagnostic purposes. • Click on “Write To Gauge” to confirm selections to the Sarasota 200 or “Cancel” to abandon. Appendix 1 GAFA PC Software Page A1-13...
  • Page 56 For Ultrasonic Levels, “Read Level Stats” is similar to that for velocity paths on the previous screen. • Click on “Write To Gauge” to confirm selections to the Sarasota 200 or “Cancel” to abandon. Appendix 1 GAFA PC Software Page A1-14...
  • Page 57 • Click on “Write To Gauge” to confirm selections to the Sarasota 200 or “Cancel” to abandon. Appendix 1 GAFA PC Software Page A1-15...
  • Page 58 The relationship must be determined by calculation or experiment or by reference to historical records. • Click on “Write To Gauge” to confirm selections to the Sarasota 200 or “Cancel” to abandon. Appendix 1 GAFA PC Software Page A1-16 Thermo Fisher Scientific...
  • Page 59 A1.4.3 Read Gauge Configuration Notes • Click on “Read” to retrieve configuration data from Sarasota 200. • A “Save As” screen will appear. Enter a file name with a .cfg type (config.) and a PC location in which to store it.
  • Page 60 A1.5.1 Logging Notes • The Log Index is a list of pages of the records or “Logs” in the Sarasota 200 • There are 8 pages available. Logging will automatically continue on the following pages until the whole log memory is full at which point it will stop or wrap round. See A1.5.1.1 •...
  • Page 61 Autogain Stats may be logged for a path for diagnostic purposes. If selected, a path number will be requested. • “Write to Gauge” sends the Log configuration to the Sarasota 200 to start the log. Appendix 1 GAFA PC Software Page A1-19 Thermo Fisher Scientific...
  • Page 62 • Ultrasonic waveforms may be displayed via this screen • The transducer type is as identified by the Sarasota 200. If “None” the transducer has not been recognised and a fault exists. • Once “Fired” the waveform will show the “fire” pulse at time zero and the receive pulse at a time equal to the time of flight (TOF) or transit time provided the sample period that has been selected is long enough.
  • Page 63 Sarasota 200 Ultrasonic Multipath Flowmeter APPENDIX 1 GAFA PC SOFTWARE To Observe Waveforms • The path number and type (i.e. velocity or depth) must be selected from the “Selection” screen box. • To observe the transducer “fire” signal in detail, select a sample period of 1 ms and a delay of 0 ms.
  • Page 64 • The password is set at the factory to 999999 • The Sarasota 200 may be viewed without entering a password but no data may be written to it without the password having been entered. • Entering the password via the above screen allows unrestricted access for viewing and writing.
  • Page 65 The internal battery may be fitted if the DC input exceeds 15 Volts. This includes the case when the AC adapter is being used. The battery allows the Sarasota 200 to operate when the external power supply fails. The time for which it will operate depends on the mode (see A2.2.1) and the state of charge of the battery.
  • Page 66 Sarasota 200 Ultrasonic Multipath APPENDIX 2 Flowmeter SPECIFICATION A2.3 Electronics Timer resolution Logging capacity 1 Mbyte 4-20 mA outputs Resolution 12 bits Maximum load when loop power internally sourced 600 ohms Minimum voltage when loop power externally sourced 3.5 volts...
  • Page 67 Sarasota 200 Ultrasonic Multipath APPENDIX 2 Flowmeter SPECIFICATION AC or DC PL13 - 3 source “A” connection Load PL13 - 2 PL13 - 1 DC source PL13 - 3 “B” connection Load PL13 - 2 PL13 - 1 DC source PL13 - 3 “C”...
  • Page 68 Sarasota 200 Ultrasonic Multipath APPENDIX 2 Flowmeter SPECIFICATION A2.4 Transducers A2.4.1 1 MHz Size 37 mm dia, 37 mm length. Consult Thermo Fisher Scientific for alternative shape and size. Frequency tolerance (matched pairs available for close tolerance requirements) Immersion pressure max 15 bar.
  • Page 69 Sarasota 2000 Ultrasonic Multipath Flowmeter APPENDIX 3 REFERENCES APPENDIX 3 REFERENCES BS 3680: Part 3E: 1993 Measurement of liquid flow in open channels – measurement of discharge by the ultrasonic (acoustic) method. This is identical to:- ISO6416: 1992 (E) In the near future a revised, dual numbered version will be published as:- BS ISO 6416 BS ISO 748: 1997 Measurement of liquid flow in open channels –...
  • Page 70 Sarasota 2000 Ultrasonic Multipath Flowmeter APPENDIX 3 REFERENCES This page is blank Appendix 3 REFERENCES Page A-2 Thermo Fisher Scientific...
  • Page 71 Sarasota 200 Ultrasonic Multipath APPENDIX 4 SITE DATA BOOK Flowmeter APPENDIX 4 SITE DATA BOOK A4.1 Model and serial number Sarasota 200 Serial Number…………… A4.2 Site and customer Site name: River or channel: Customer name: Customer reference: Sales Order reference number: Thermo Fisher Scientific site reference number: A4.3 General description...
  • Page 72 Sarasota 200 Ultrasonic Multipath APPENDIX 4 SITE DATA BOOK Flowmeter A4.6 Programmed data Fill in the table below or attach GAFA configuration print out. Screen Data type Programmed data Password Measurement units Real time clock Station configuration Path allocation Flow calculation method Output configuration Analogue output config’n...
  • Page 73 Sarasota 200 Ultrasonic Multipath APPENDIX 4 SITE DATA BOOK Flowmeter A4.7 Schedule of drawings (Drawings to be enclosed) Drawing Number Title Issue Date A4.8 Test certificates (Enclose the following as appropriate) Type Certificate No Date Comment Declaration of conformances In house test schedules...
  • Page 74 Sarasota 200 Ultrasonic Multipath APPENDIX 4 SITE DATA BOOK Flowmeter This page is blank Appendix 4 SITE DATA Page A4-4 Thermo Fisher Scientific...
  • Page 75 Installation guidelines for Hazardous Areas. The Sarasota 200 IS Transducer and Interface Unit has been designed such that it will not give rise to physical injury when handled properly. Neither item produces excessive surface temperature and they do not emit infra red, electromagnetic or ionising radiation.
  • Page 76 Sarasota 200 Ultrasonic Multipath APPENDIX 5 Flowmeter This page is blank Appendix 5 I.S Interface and Transducer Page A5-2 Thermo Fisher Scientific...
  • Page 77 Thermo Fisher Scientific 81 Wyman Street P.O. Box 9046 Waltham, Massachusetts 02454-9046 United States www.thermofisher.com...

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