Gill Instruments HS-50 User Manual

HS-50

Horizontally Symmetrical

Ultrasonic Research

Anemometer

User Manual

Doc No. 1199-PS-0032

Issue 02

Gill Instruments Ltd recognise all trademarks

Gill Instruments Limited

Saltmarsh Park,
67 Gosport Street,
Lymington,
Hampshire.
SO41 9EG
UK

Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
Website: www.gill.co.uk

Gill Instruments Ltd

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Gill Instruments Ltd

1. FOREWORD .....................................................................................................................................5

2. SYSTEM INSTALLATION..............................................................................................................6

2.1 Mounting.......................................................................................................................................6

2.2 Alignment .....................................................................................................................................6

2.3 Using the Inclinometer..................................................................................................................6

2.4 Corrosion ......................................................................................................................................6

2.5 Earthing.........................................................................................................................................6

2.6 Cabling..........................................................................................................................................6

3. SYSTEM OPERATION ....................................................................................................................7

3.1 Overview.......................................................................................................................................7

3.2 Operating modes...........................................................................................................................7

3.3 Measurement Mode ......................................................................................................................7

3.4 Sampling .......................................................................................................................................7

3.5 Averaging......................................................................................................................................7

3.6 Wind Measurement, SoS and Temperature Reporting Format.....................................................8

3.7 Analogue Input Reporting Formats ..............................................................................................8

3.8 Diagnostics....................................................................................................................................8

3.9 Confidence Tone...........................................................................................................................8

3.10 Result Reporting .........................................................................................................................8

3.11 Interactive Mode.........................................................................................................................9

3.12 Configuration Commands...........................................................................................................9

3.13 Interrogation Commands ............................................................................................................9

4. CONNECTION TO A PC OR OTHER DEVICE ...........................................................................10

5. USING THE ANEMOMETER WITH A PC RUNNING RCOM ..................................................11

5.1 PC Requirement..........................................................................................................................11

5.2 Installing RCOM.........................................................................................................................11

5.3 Starting RCOM ...........................................................................................................................11

5.3.1 Command line options..........................................................................................................11

5.3.2 Procedure if no anemometer is found...................................................................................12

5.4 Main Menu..................................................................................................................................13

5.5 Trend Display .............................................................................................................................13

5.6 Trend Options .............................................................................................................................13

5.7 Display Micro-met Parameters ...................................................................................................13

5.8 Micro-met Parameter Options ....................................................................................................13

5.9 Tabular Display...........................................................................................................................13

5.10 Configure Anemometer ............................................................................................................13

5.11 Options......................................................................................................................................13

5.12 Exit to DOS...............................................................................................................................13

5.13 Trend Display ...........................................................................................................................14

5.14 Display Micro-met Parameters .................................................................................................15

5.15 Micro-met Parameter Options ..................................................................................................15

5.16 Tabular Display.........................................................................................................................17

5.17 Configure Anemometer ............................................................................................................18

5.18 Options......................................................................................................................................19

5.19 Storage of settings.....................................................................................................................19

5.20 RCOM Error Messages.............................................................................................................20

5.21 Instructions For Using The Binary To ASCII Conversion Utility............................................20

6. USING THE ANEMOMETER WITH A PC RUNNING RCOM II ..............................................22

6.1 PC Requirement..........................................................................................................................22

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6.2 Installing RCOM II.....................................................................................................................22

6.3 Starting RCOM II .......................................................................................................................22

6.4 Using RCOM II ..........................................................................................................................22

7. USING THE ANEMOMETER WITH A PC RUNNING YOUR SOFTWARE ............................23

7.1 Digital Serial Output Format ......................................................................................................23

7.1.1 Binary Result Message Format ............................................................................................23

7.1.2 ASCII Result Message Format.............................................................................................24

7.1.3 Status Fields..........................................................................................................................25

7.1.4 Software commands .............................................................................................................28

8. USING THE ANALOGUE INPUTS OF THE ANEMOMETER ..................................................33

9. USING THE PRT INPUT................................................................................................................34

10. USING THE ANALOGUE OUTPUTS.........................................................................................35

10.1 Introduction...............................................................................................................................35

10.2 Analogue outputs ......................................................................................................................35

10.3 Analogue Sync. Output.............................................................................................................36

10.4 Status Output ............................................................................................................................36

10.5 Test Modes................................................................................................................................36

11. DRAWINGS ..................................................................................................................................37

1086-M-043 Anemometer Cable (Voltage Out)...............................................................................39

1189-K-022 Indoor PCI Unit Dimensions........................................................................................40

1199-K-066 3 Axis Horizontal Anemometer U,V &W Axis Definitions ........................................41

1199-K-089 3 Axis Horizontal Anemometer Head + Electronics Mounting Details.......................42

1210-K-068 R3 & HS Research Anemometer Measurement Sequence ..........................................43

Assembly of Amphenol C91A Screw Lock 4 Way Socket..............................................................44

12. TECHNICAL SPECIFICATION ..................................................................................................45

12.1 Wind Measurement...................................................................................................................45

12.2 Speed of Sound Measurement ..................................................................................................45

12.3 Environmental...........................................................................................................................45

12.4 Supply Input..............................................................................................................................45

12.5 Serial Interface..........................................................................................................................45

12.6 Analogue Inputs........................................................................................................................46

12.7 PRT ...........................................................................................................................................46

12.8 Anemometer Sync Output ........................................................................................................46

12.9 Inclinometer..............................................................................................................................46

12.10 Anemometer Power and Data Connector Hirose 20 way socket........................................46

13. POWER AND COMMUNICATIONS INTERFACE ...................................................................47

13.1 Desk Top PCI............................................................................................................................47

13.2 Connector Pin Assignments......................................................................................................47

13.3 PCI Specification ......................................................................................................................49

APPENDIX A ......................................................................................................................................51

SUMMARY OF ABBREVIATIONS USED IN THIS MANUAL .................................................51

PACKING LIST ...............................................................................................................................51

OPTIONAL EXTRAS......................................................................................................................51

APPENDIX B ......................................................................................................................................52

Principle of Operation.......................................................................................................................52

APPENDIX C ......................................................................................................................................53

Sonic Temperature Measurement .....................................................................................................53

APPENDIX D ......................................................................................................................................60

Micro-Met Calculations....................................................................................................................60

APPENDIX E.......................................................................................................................................67

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RCOM Binary File Format...............................................................................................................67

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1. FOREWORD

This manual refers to the Gill Instruments Ltd. Horizontally Symmetrical Research Ultrasonic
Anemometer. It is an extremely sophisticated instrument and to achieve optimum performance we
recommend that you read the whole of this manual before proceeding further with use.

The Solent Range is in continuous development and so specifications may be subject to change
without prior notice.

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2. SYSTEM INSTALLATION

2.1 Mounting

The head and electronics unit should be mounted in accordance with Drawing Number
1199-K-089.

2.2 Alignment

It is recommended that the head is aligned so that the upper transducer sphere is directly above the
lower transducer sphere. The inclinometer has been calibrated to read zero on both axes when this
position is reached.

2.3 Using the Inclinometer

The data from the inclinometer can be obtained in several ways:
a) RCOM displays this information at the bottom of the screen
b) By typing INCL in interactive mode (see Section 6).
c) By decoding the upper status addresses of the anemometer output message
(see Section 6).

2.4 Corrosion

Galvanic corrosion is possible unless stainless steel fixings are used for mounting the head and
electronics unit. This will ensure that the anemometer will provide long service under extreme
conditions e.g. marine.

2.5 Earthing

For maximum protection against lightning the head must be earthed via its mountings. The
electronics unit and PCI should be earthed using the earth studs provided.

2.6 Cabling

Ensure that strain relief measures are employed when installing the anemometer cables. Do not allow
the whole weight of a cable to be applied to the connector.

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3. SYSTEM OPERATION

3.1 Overview

• Data output rates up to 50s-1.

• Measurement of wind velocities in excess of 30ms-1 .

• Wind speed accuracy < 1% RMS.

• Accurate speed of sound measurement.

• Configuration carried out via serial port and stored in non-volatile memory.

• High speed, full duplex RS422 interface, operating up to 115200 baud.

• Background diagnostics providing the user with the confidence that the unit is operating

correctly.

• 6 differential 14 bit analogue inputs and one PRT100 input.

• Analogue outputs representing wind speed, SoS, and temperature optionally fitted in

PCI.

3.2 Operating modes

The anemometer has two operating modes:

1. Measurement mode - This is the normal mode of operation, which is the default

mode from power up.

2. Interactive mode - This allows the anemometer to be configured and interrogated.

3.3 Measurement Mode

The principle of operation is described in Appendix B. The parameters sampled are determined by
the anemometer’s configuration and consist of:

1. Wind velocity (axis velocities are always sampled)

2. Speed of Sound (SoS)

3. Analogue Inputs (6)

4. Absolute Temperature (PRT100).

The way in which the results are calculated, formatted and reported depends upon the configuration
of the anemometer.

3.4 Sampling

Wind velocity, SoS and analogue inputs are sampled every 10ms, in a fixed sequential pattern. The
PRT100 is sampled every 40ms. The measurement sequence is shown in Drawing Number 1210-K-

068.

3.5 Averaging

These samples are block averaged before being converted into results. For wind speed, SoS and
analogue inputs the number of samples used in the block average can be set to between 2 and 250
samples. The corresponding maximum number of PRT100 samples per result is 62.

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3.6 Wind Measurement, SoS and Temperature Reporting Format

The wind measurement can be output in one of the following formats:

1. U, V & W, calibrated (ms-1)

2. U, V & W, uncalibrated (ms-1)

3. Polar & W, calibrated (° & ms-1)

4. Polar & W, uncalibrated (° & ms-1)

5. Axis velocities, uncalibrated (ms-1)

In U, V,W modes the alignment of the U and V axes can be selected as follows:-

Axis U in line with Axis 1 when the anemometer is viewed from above.

Spar U is in line with the main spar when viewed from above. In this configuration U, V, W are

labelled U', V', W'.

The U, V, W axis alignment options are shown in the relevant U, V, W axis definition drawing in
Section 10.

The axis alignment can be selected using the Configuration menu within RCOM (Section 5.17) or
the ALIGNUVW command if using your own PC software (Section 6.1.4).

The speed of sound measurement results can be output in one of the following formats:

1. Speed of Sound (ms-1)

2. Sonic Temperature (K)

3. Sonic Temperature (°C)

Speed of sound measurements can be disabled.

The absolute temperature measurement results can be output in one of the following formats:

1. Absolute Temperature (K)

2. Absolute Temperature (°C)

Absolute temperature measurements can be disabled.

3.7 Analogue Input Reporting Formats

If ASCII format is selected, analogue input measurements are output in volts to 4 decimal places. If
binary format is selected, analogue input measurements are output in 2's complement.
The number of analogue inputs to be measured can be set from 0 to 6.

3.8 Diagnostics

The system reports error codes if a failure is detected of the ultrasonic transducers, non-volatile
memory or PRT.

3.9 Confidence Tone

If this function is enabled then normal operation is indicated by an intermittent tone within the
anemometer.

3.10 Result Reporting

The selected parameters are blocked together along with the diagnostic results and block control
information to form a result message. The result message can either be in a Binary or ASCII format.

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In the ASCII format the fields can be padded to form a fixed field size if required. The way the result
message is transmitted is dependant on the reporting mode:

1. Continuous mode - the result message is transmitted immediately after calculation.

2. Polled mode - the host pc requests data from the anemometer. The anemometer

responds by sending the current result message.

3.11 Interactive Mode

Interactive mode is entered from measurement mode, by sending the anemometer the appropriate
command. In this mode the user can communicate with the anemometer, issuing configuration
commands to the anemometer, or requesting information from the anemometer.

3.12 Configuration Commands

Configuration commands allow the user to configure the anemometer as required. The configuration
parameters are held in non-volatile storage, allowing the anemometer to retain it’s current
configuration when powered down.

3.13 Interrogation Commands

Interrogation commands allow the user to request various information from the anemometer.

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4. CONNECTION TO A PC OR OTHER DEVICE

Connection to a PC or other device requires the use of:

1. Either a standard PCI

2. Or a suitable alternative power supply and RS422 conversion unit, which meets the

specification of the anemometer.

2 cables will be required:

1. Anemometer EU to PCI

2. PCI to PC - RS232 or RS422

The PCI supplies power for the anemometer and provides conversion of the RS422 signal sent by the
EU and the RS232 signal required by a PC. The PCI requires connection to a mains power supply or
DC. Computers other than IBM PC’s or compatibles may require a customised cable for connection
to the PCI.

The anemometer outputs data through a connector on the EU. Data is provided in RS422 format only
and reconstituted to analogue if required at the PCI.

Baud rate options are:

1. 2400

2. 4800

3. 9600

4. 19200

5. 38400

6. 57600

7. 115200

Data format:

1. 8 data, 1 stop, no parity.

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5. USING THE ANEMOMETER WITH A PC RUNNING RCOM

5.1 PC Requirement

Minimum 286, VGA and 1Mb of RAM
Recommended 486 DX2 66MHz.

5.2 Installing RCOM

The RCOM program and its auxiliary files are stored on a single 3½” disk. They should be installed
on the hard disk in a directory named \RCOM. To install the software type the following commands
in this order. For the user settings within RCOM to be stored correctly the RCOM directory must be
in the root e.g. C:\RCOM.

MD C:\RCOM
COPY A:*.* C:\RCOM

NB This assumes that your 3½” drive is drive A: and your hard disk is drive C:. If not replace A: and
C: in the above commands with the drive letters for your 3½” and hard disk drives respectively.

5.3 Starting RCOM

To start the RCOM Program, change directory to the RCOM directory and type RCOM.

CD \RCOM
RCOM

RCOM may be followed by one or more command line options. The PC will search on its serial link
for an anemometer. When an anemometer is found the main menu is displayed.

5.3.1 Command line options

The RCOM program may be passed one or more command line parameters.

/Cn Sets the COM port to use for the anemometer. Valid settings are n = 1, 2, 3 or 4. Default is

COM1.

/CBn Serial port base address. If your PC has non-standard serial ports, it may be necessary to set the

base address of the port. Usually the PC can work this out from the COM port, so this command
should only be needed in rare circumstances. For instance, to set the base address to 2F8h use the
command line option /CB02F8.

/CInSerial port interrupt number. Sets the interrupt (IRQ) number used by the COM port. Usually

this is standard for COM1 and COM2 (IRQ4 and IRQ3 respectively). There is no generally accepted
defaults for COM3 and COM4. Therefore this command should only be necessary if you intend to
use COM3 or COM4, or if you have a non-standard COM1 or COM2.For example to instruct RCOM
to seek an anemometer on COM3 using interrupt 4 the command would be:
RCOM /C3 /CI4

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5.3.2 Procedure if no anemometer is found

If no anemometer is found then the program displays the following menu.

RCOM Gill Instruments Ltd

WARNING!

No anemometer found

Please ensure that the anemometer is connected

And that power is available

1. Search for Anemometer Again

2. Change Serial Port (COM2)

3. Change Base Address 02F8h

4. Change Interrupt vector 03h

5. Exit

The user should:

1. Ensure that the anemometer is connected and powered up. If you are using an indoor Power

and Communications Interface (PCI) and the RX LED is flashing then the anemometer is
powered up and communicating. If the RX LED is NOT flashing it DOES NOT imply that
the anemometer has no power, the anemometer may be awaiting a command over the serial
link.

2. Check that the COM port displayed (COM2 in the above example) is correct. If not select

option 2 on the menu and select the correct comms port.

3. Select option 1 on the menu. The software will seek the anemometer again. If you are using

an indoor Power and Communications Interface (PCI), the TX LED should flash during this
process. If it does not then either the serial port setting is wrong or there is a problem with the
communication cable between the PC and the PCI.

4. If the anemometer is still not found then check that the settings of base address and interrupt

vector are correct for your PC. If not use options 3 & 4 to correct them and option 1 to repeat
the search for the anemometer.

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5.4 Main Menu

The main menu allows the selection of primary functions.

1. RCOM V1. 01 Gill
Instruments Ltd

1. Trend Display

2. Trend Options

3. Display Micro-met Parameters

4. Micro-met Parameter Options

5. Tabular Display

6. Configure Anemometer

7. Options

8. Exit to DOS

5.5 Trend Display

This provides a graphical display of wind component trends. Raw data can be written to disk. (See
Section 5.14)

5.6 Trend Options

This allows the user to select which parameters to display on the trend display, and to select super­VGA modes. The software supports 800x600 and 1024x768, 16-colour modes on VESA compatible
super-VGA cards.

5.7 Display Micro-met Parameters

This displays micro-meteorological parameters in real time. Raw data and calculated parameters can
be written to disk. (See Section 5.14)

5.8 Micro-met Parameter Options

This allows the user to select which micro-meteorological parameters to display and which micro­meteorological parameters to download to disk. (See Section 5.15)

5.9 Tabular Display

This gives a scrolling display of wind measurement. Maximum and minimum values can be
displayed. Raw data can be written to disk. (See Section 5.16)

5.10 Configure Anemometer

This displays the configuration of the anemometer and allows the user to alter parameters. (See
Section 5.17)

5.11 Options

This allows the user to set various options. These are mostly to do with writing data to disk. (See
Section 5.18)

5.12 Exit to DOS

This quits the program and returns the user to the operating system.

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5.13 Trend Display

The Trend Display provides a graphical display of wind component trends. Each parameter is
displayed on its own set of axes and in a unique colour. The labels on the Y-axis give the name of the
parameter and the scale. The data is displayed from left to right. Each sample is displayed as a
separate pixel, therefore the speed of the display and the resolution of the X-axis is dependent on the
sample rate and the resolution of the screen. The X axis is labelled in seconds. When the extreme
right of the screen is reached the colour of the old data changes to grey, and the scale is displayed on
the right in grey. The display then starts again from the left-hand edge, with new scale values.

U, V, W and magnitude are displayed in m.s-1. Direction is displayed in degrees. Temperatures are
displayed either in Kelvin or degrees Celsius. Analogue inputs are in volts. Each display is scaled

individually. In the example below the W vector is scaled at ±5m.s-1 whilst U and V are scaled at

±2m.s-1.

Pressing the “Alt” and “D” keys simultaneously (Alt-D) will initiate a data download. The user will
be asked for a filename and the raw data will be written to that file. The format of the download is
selected from the Options Menu. Once a data display has been started the Alt-D combination will
stop the download without ending the display.
Pressing the “Alt” and “C” keys simultaneously (Alt-C) will clear the screen and start the data
display from the left, with new scale values. Pressing the “Esc” key will stop any download that is in
progress, terminate the display and return the user to the main menu.

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5.14 Display Micro-met Parameters

Micro-met Parameters screen displays micro-meteorological parameters in real time. The results
displayed are selected and the time over which they are calculated is set in the Micro-met options
menu. The calculations performed are described in Appendix B.

Calculated parameters can be written to disk. The results saved are selected in the Micro-met options
menu and are independent of the results displayed.
Pressing the “Alt” and “D” keys simultaneously (Alt-D) will initiate a data download. The user will
be asked for a filename and the selected calculated parameters will be written to that file. The format
of the download is selected from the Options Menu. Once a data display has been started the Alt-D
combination will stop the download without ending the display.

Pressing the “Alt” and “C” keys simultaneously (Alt-C) will clear the screen and re-start the display.

Pressing the “Esc” key will stop any download that is in progress, terminate the display and return
the user to the main menu.

The example screen shows what would be displayed with mean and standard deviation; U, V and W;
covariance of U with V; covariance of U with W; covariance of V with W;U* and Cd selected for
display. Pressing the “Esc” key exits this display and returns to the main menu.

Micro-met Parameters Gill

Instruments Ltd
Mean U +0.168 m/s
Mean V -0.001m/s
Mean W -0.140 m/s

Usig +0.237 m/s
Vsig +0.166 m/s
Wsig +0.087 m/s

UVcov +0.024 m2/s2
UWcov -0.003 m2/s2
Vwcov +0.002 m2/s2

U* +0.000 m/s
Cd +0.000

<Alt-D> Data Download <Alt-C> Clear Screen
<Esc> Exit

Status OK

5.15 Micro-met Parameter Options

This allows the user to select which micro-meteorological parameters to display and which micro­meteorological parameters to download to disk. It also allows the setting of various user defined
parameters. The calculations performed to derive these parameters are contained in Appendix B.
For each parameter there are two entries. Each may be either a tick or a cross. If the entry under the
‘Disp’ label is a tick then that parameter will be displayed on the micro-met parameters screen. If the
entry under the ‘Log’ label is a tick then that parameter will be written to disk.

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Selecting Von Kármán Constant, Specific Density of Air, Specific Heat of Air, Gravity Constant or
Sample Time allows the user to edit these settings. The Temperature Input setting allows sonic
temperature or absolute temperature from the PT100 to be used as the input parameter T. The
example screen shows what would be displayed with means of U, V and W; covariance of U with V,
covariance of U with W and covariance of V with W selected for display and the means U, V and W
selected for download to disk. Selecting Exit or pressing the “Esc” key exits this menu and returns to
the main menu.

6. Micro Meteorology Options Gill
Instruments Ltd

Means Natural Stand Devs Input Means
Disp Log Disp Log Disp Log
Mean U 9 9 xsig X X Alp 1 X
X
Mean V 9 9 ysig X X Alp12 X
X
Mean W 9 9 zsig X X Alp3 X
X
Mean T X X Alp4 X
X
Turbulence Parameters Alp5 X X
Stnd Devs Disp Log
Disp Log tx X X
Usig X X ty X X Input Stnd Devs
Vsig X X tz X X Disp Log
Wsig X X u* X X Alp1sig X X
Tsig X X T* X X Alp2sig X X
Cd X X Alp3sig X X
Covariances L X X Alp4sig X X
Disp Log F X X Alp5sig X X
Uvcov 9 X Qh X X Alp6sig X
X
Uwcov 9 X TKE X X
Vwcov 9 X Input Covariances
UTcov X X Disp Log
VTcovX X AlpWcov X X
WTcov X X Alp2Wcov X X
Alp3Wcov X X
User Parameter Alp4Wcov X X
Von Karman Constant 0.40 Alp5Wcov X X
Specific Density of Air 1.225 Alp6Wcov X X
Specific Heat of Air 1004.67
Gravity Constant 9.80 Exit
Sample Time (Minutes) 60
Use Temperature Input Sonic Temp

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5.16 Tabular Display

This gives a scrolling display of wind measurement. The oldest results are at the top of the screen.
New results are added at the bottom of the screen and the whole display is scrolled upwards. If all the
options are turned on then the amount of data will exceed the screen width. In this instance the
number of decimal places used to display the analogue inputs will be reduced. The data written to
disc will use all decimal places and may therefore exceed eighty characters.
Maximum and minimum values can be displayed at the bottom of the screen. Maximum and
minimum are selected from the options menus. The maximum and minimum display can be cleared
by pressing “Alt-M”.

Raw data can be written to disk. Pressing the “Alt” and “D” keys simultaneously (Alt-D) will initiate
a data download. The user will be asked for a filename and the raw data will be written to that file.
The format of the download is selected from the Options Menu. Once a data display has been started
the Alt-D combination will stop the download without ending the display.

Pressing the “Alt” and “C” keys simultaneously (Alt-C) will clear the screen and start the data
display from the top of the screen. It does not clear the maximum and minimum display. Pressing the
“Esc” key will stop any download that is in progress, terminate the display and return the user to the
main menu.

Data Display Gill Instruments Ltd

Sa Sb U V W

04 00 +00.00 +00.00 -00.02 288.76
05 00 +00.00 +00.00 -00.02 288.76
06 01 +00.00 +00.00 -00.02 289.01
07 31 +00.00 +00.00 -00.02 288.78
08 00 +00.00 +00.00 -00.02 288.75
09 00 +00.01 +00.00 -00.02 288.75
0A 00 +00.00 +00.00 -00.03 288.77
01 08 +00.00 +00.00 -00.02 288.76
02 2C +00.00 +00.00 -00.02 288.74
03 00 +00.00 +00.00 -00.02 288.78
04 00 +00.01 +00.00 -00.01 288.76
05 00 +00.00 -00.01 -00.01 289.04
06 01 +00.00 +00.00 -00.02 288.75
07 31 +00.00 +00.00 -00.03 289.06
08 00 +00.00 +00.00 -00.03 289.04
09 00 +00.00 +00.00 -00.02 288.74
0A 00 +00.00 +00.00 -00.02 288.77
01 08 +00.01 +00.00 -00.01 288.75
02 2C +00.00 +00.00 -00.03 288.76
03 00 +00.00 +00.00 -00.02 288.77
04 00 +00.01 +00.00 -00.01 288.74
05 00 +00.00 +00.00 -00.02 288.75

01 00 -00.05 -00.39 -00.24 288.72

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SoS

Gill Instruments Ltd

0A 31 +00.24 +00.01 +00.01 289.30

<Alt-D> Data Download <Alt-C> Clear Screen <Esc> Exit

Status OK

5.17 Configure Anemometer

This displays the configuration of the anemometer and allows the user to alter parameters. Selecting
any option except “average” causes a small menu to be displayed. This menu offers all the possible
settings for that parameter. Selecting “average” allows the user to alter the number of firings
averaged by the anemometer. This can be any integer value between 2 and 250.

The example shows the “Message Mode” sub-menu “popped-up” over the configuration screen.

Selecting EXIT or pressing the “Esc” key exits this menu and returns to the main menu

2. Configuration Gill
Instruments Ltd

Serial Number:
0123456
Data Reported Reporting Speed
Report Mode UVW CAL Average 10
Speed of Sound mode SPEED Baud Rate 19200
Absolute Temp Mode OFF
Analogue
String Format Channels enabled
DDDDDD
String Format BINARY Full Scale Deflect
30
ASCII Terminator CRLF Direction Wrap
Mode 360
Echo
Message Mode Additional

Features

Confidence Tone
DISABLED
Axis Alignment
AXIS
EXIT

CON

HS-50 Research Anemometer Page 18 Issue 02
Doc. No. 1199-PS-0032 November 2004

Gill Instruments Ltd

5.18 Options

This allows the user to set various options. These are mostly to do with writing data to disk.

Selecting “Output Field Separator” allows the user to select what separator will be used in ASCII
mode downloads. The choices are Comma, Space, Tab or Semi-Colon. If the download format is set
to Binary than this option has no effect.

Selecting “Output Line Terminator” allows the user to select what terminator will be used at the end
of lines in ASCII mode downloads. The choices are carriage return (CR) or carriage return and line­feed (CR/LF). If the download format is set to Binary than this option has no effect.
Selecting the "Download format" allows the user to choose whether to store data in ASCII or Binary.
ASCII files are suitable for reading into a text editor or spreadsheet directly.
They take longer to write and may require more disk space than binary files. Binary data needs to be
converted to ASCII by a separate program before reading into a text editor or spreadsheet. The
conversion program "Convert 3" is supplied with the anemometer for this purpose. Instructions for
Convert 3 are provided in Section 5.21. The binary file format
is specified in Appendix E.

“Output Field Separator”, “Output Line Terminator” and “Download format” affect downloads from
the trend display, the micro-met parameter display and the tabular display.
Selecting “Display Maxima and Minima” toggles the display of maximum and minimum values in
tabular display on or off.
Selecting "Output Period" allows the user to enter an averaging period (1 to 60 mins) for use when
displaying and logging data in trend and tabular display mode. A time of 0 gives no averaging.
Averaging period selected is displayed after the status code.

Selecting Return to Main Menu or pressing the “Esc” key exits this menu and returns to the main
menu.

4. Options Gill
Instruments Ltd

1. Output Field Separator COMMA

2. Output Line Terminator CR/LF

3. Download Format ASCII

4. Display Maxima and Minima On

5. Output Period O

6. Return to Main Menu

5.19 Storage of settings

All menu selections that set a parameter are stored in a data file on the hard disk in a file named
“\RCOM\MICROMET.SET”. This prevents the users from having to re-enter settings each time the
program is run. If this file cannot be found then default values will be used and the file created.

HS-50 Research Anemometer Page 19 Issue 02
Doc. No. 1199-PS-0032 November 2004