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MaxiMet GILL GMX200 User Manual

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User Manual
For Compact Weather Stations
Document Number: 1957-PS-021 applies to units with firmware 2669 -2.25.05 and Serial
Numbers 24030078 onwards.
GMX200
GMX400
__________________________________________________________________________________________________
MaxiMet
Doc. No. 1957-PS-021
GM240
GMX500
GMX551
Gill Instruments Limited
Saltmarsh Park, 67 Gosport Street, Lymington,
Tel: +44 1590 613500, Fax: +44 1590 613555
Email:
anem@gillinstruments.com
GMX300
GMX501
GMX600
Hampshire, SO41 9EG, UK
Website:
www.gillinstruments.com
Page 1
GMX301
GMX550
Issue 9
February 2024

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  • Page 1 GMX500 GMX400 GMX551 GMX600 Gill Instruments Limited Saltmarsh Park, 67 Gosport Street, Lymington, Hampshire, SO41 9EG, UK Tel: +44 1590 613500, Fax: +44 1590 613555 Email: anem@gillinstruments.com Website: www.gillinstruments.com __________________________________________________________________________________________________ MaxiMet Page 1 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 2: Table Of Contents

    Solar (GMX301, GMX501, GMX551) ................11 2.2.2 GPS Option (GMX200, GMX240, GMX500, GMX550, GMX551 and GMX600) ... 12 2.2.3 Inclinometer (All Maximet Models, diagram illustrates a GMX550) ......12 2.2.4 Heating Function Option (GMX600, 551, 550, 501, 500) ..........12 Pre-Installation ....................13 3.1.
  • Page 3 Appendix I - Using a Terminal Program to run Maximet Tilt function ..... 118 Appendix J - Using a Terminal Program to set MaxiMet Date and Time ....120 Appendix K - Using Gill MetView Software to View the Maximet Data String ..121 Appendix L - Maintenance &...

  • Page 4: Welcome To The Maximet User Manual

    User Manual 1. Welcome to the Maximet user manual About this manual 1.1. Overview of Content • • • • • • 1.2. Description of Icons __________________________________________________________________________________________________ MaxiMet Page 4 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 5: General Notes

    User Manual 1.3. General Notes 1.4. User Manual Revision History Document Version Release Date Key Changes Iss 9 Feb 24 New Manual Template __________________________________________________________________________________________________ MaxiMet Page 5 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 6: Product Overview And Functions

    User Manual 2. Product Overview and Functions Options Project Code Model number Wind Speed 1957 Non-GPS Non-GPS (HTD) GPS (HTD) __________________________________________________________________________________________________ MaxiMet Page 6 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 7: Maximet Part Numbers And Parameters

    User Manual 2.1.1 Maximet part numbers and parameters GMX Sensor Parameter Wind Speed, Relative Wind Direction, Relative Compass, Heading Temperature, Air Humidity, Relative Barometric Pressure Rain/Precipitation Solar Radiation GPS (option) Heating For information within the part structure:- 1957-0XXX-XX-XXX A number greater than 0 identifies the unit to have a Solar Sensor fitted.

  • Page 8: Summary Of Maximet Sensors And Derived Parameters

    User Manual 2.1.2 Summary of MaxiMet Sensors and Derived Parameters (See Appendix M for more details GMX Derived Parameter Average Speed (WMO) Average Direction (WMO) Average Corrected Direction (WMO) Corrected Direction Gust Direction (WMO) Gust Speed (WMO) Status (Sensors) Wind Status...

  • Page 9: Wind Speed And Direction Sensor (Gmx200, Gmx240, Gmx500, Gmx501, Gmx550, Gmx551 And Gmx600)

    2.1.3 Wind Speed and Direction Sensor (GMX200, GMX240, GMX500, GMX501, GMX550, GMX551 and GMX600) The Maximet uses the Gill Ultrasonic WindSonic wind speed and direction sensor. The WindSonic measures the times taken for an ultrasonic pulse of sound to travel from the north (N) transducer to the south (S) transducer and compares it with the time for a pulse to travel from S to N transducer.

  • Page 10: Solar Radiation Shield (Gmx300, Gmx301, Gmx400, Gmx500, Gmx501, Gmx550, Gmx551 And Gmx600)

    2.1.5 Barometric Pressure (GMX300, GMX301, GMX400, GMX500, GMX501, GMX550, GMX551 and GMX600) Barometric pressure is provided by a solid-state device fitted onto a board inside a Maximet moulding. 2.1.6 Temperature, Relative Humidity and Dewpoint (GMX300, GMX301, GMX400, GMX500, GMX501, GMX550, GMX551 and GMX600) There are internal solid state sensor circuits contained within the radiation shield that provides digital output signals for Relative Humidity, Temperature and calculated Dewpoint.

  • Page 11: Rain/Precipitation (Gmx550 And Gmx551)

    Maximet uses the internal compass to electronically sense the horizontal component of the field. Information from the compass can be used to correct the Wind direction data for when the Maximet is not aligned to North. The output of the wind direction is relative to magnetic North.The Maximet compass is calibrated at Gill Instruments before the unit is delivered.

  • Page 12: Gps Option (Gmx200, Gmx240, Gmx500, Gmx550, Gmx551 And Gmx600)

    Small size and high-end GPS functionality are combined with low power consumption. 2.2.3 Inclinometer (All Maximet Models, diagram illustrates a GMX550) Maximet outputs Tilt co-ordinates X and Y in terms of degrees and Z in terms of orientation. Normal Tilt Output •...

  • Page 13: Pre-Installation

    User Manual 3. Pre-Installation 3.1. Equipment supplied • • • https://gillinstruments.com/downloads/ • https://gillinstruments.com/downloads/ • 3.2. Optional Extras/Spares __________________________________________________________________________________________________ MaxiMet Page 13 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 14: Right To Change And Revise

    3.7. Setup Requirements Host System The default delivery output communication setting of Maximet output is RS232 with the COMMS interface setting set for RS232. Use an RS232 to USB converter e.g. Gill Part No. 1957-10-065, 1.8m configuration cable fitted with 9-way Maximet connector and with integral 5V USB connector power for Maximet (see para 3.2).

  • Page 15: Installation Requirements

    Alternatively use a Gill Configuration cable, Gill Part No. 1957-10-065, with a 9-way connector fitted on one end and USB converter at the other end if required to simplify set up between Maximet and a PC. Open the Gill Metset software provided to read, check or change settings as per Appendix D Use Metset to view the data string and confirm that the Status field reads 0000.

  • Page 16: Wind

    Make sure that Maximet is not mounted close to areas that may be see large sources of local magnetic fields.

  • Page 17: Solar

    4.6. Solar Maximet should be mounted horizontally and vertically as level as possible during installation for optimal readings. Maximet has a tilt sensor output that can assist with this. A clear view of the sky is best for an optimal solar measurement. Mounting obstructions, tree canopy, hills, mountains and tall buildings that obscure the view either overhead or of the horizon can impede solar readings.
  • Page 18 No two rain gauge designs are ever likely to produce identical results, and identical rain gauges can give slightly different catches, even when sited close to each other. On GMX550/551) units plug the 20m, 4-way connector cable into the Maximet socket. __________________________________________________________________________________________________...
  • Page 19 The Optical Sensor provides a General Indication only of rainfall levels for use in situations where low maintenance is required. Use a tipping bucket or equivalent with a Maximet (e.g. GMX550-and GMX551) where reference quality precipitation measurements are required.

  • Page 20: General Alignment

    The customer must fit appropriate strain relief to the cable. Connect the plug by twisting it whilst pushing it gently into the socket on the Maximet. When it locates, twist the outer sleeve clockwise to connect and lock the plug.

  • Page 21: Mounting Bracket E.g. Gill Part 1771-Pk-115

    An optional mounting bracket is available from Gill Instruments Part 1771-PK-115 as per the illustration. Attach Earth cable here Mount the sensor on to the bracket mount and if using a Maximet Wind Sensor, align so that the sensor north marker points to the bracket pole.

  • Page 22: Dimensions (In Mm)

    User Manual 4.12. Dimensions (in mm) GMX240 GMX200 GMX300 GMX301 __________________________________________________________________________________________________ MaxiMet Page 22 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 23 User Manual GMX400 GMX500 GMX501 GMX550 __________________________________________________________________________________________________ MaxiMet Page 23 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 24 User Manual GMX551 GMX600 __________________________________________________________________________________________________ MaxiMet Page 24 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 25: Connector And Pin Allocation

    Any cable wires not used should be isolated and grounded at the terminating equipment/user end. Digital 0V should be used in conjunction with RS422 Tx/Rx lines in order to improve noise immunity. 5.1. View of the Maximet Connector looking down at the Cable Side 5.2. 9-Way Connector and Cable Connections...

  • Page 26: Maximet Units

    60mA (includes the rain sensor) GMX550 27mA GMX551 37mA GMX600 64mA MaxiMet has reverse polarity protection. 5.4. Heating power supply Power supply required is peak 1.6A, nominal operational average current draw is 400mA at 12vdc. __________________________________________________________________________________________________ MaxiMet Page 26 Issue 9 Doc.

  • Page 27: Connecting To A Pc Using Rs232 (Default Setting)

    • Maximet default factory comms setting is RS232 • To use the Maximet with RS422 comms use MetSet to change the COMMS interface setting to RS422 • Alternatively, use MetSet to change the COMMS interface setting to EXT and leave connector Pin 8 open circuit.

  • Page 28: Using Rs485 (Not A Default Setting)

    • Maximet default factory comms setting is RS232. • To use the Maximet with RS485 2 wire communication use MetSet to change the COMMS Interface setting to RS485P 2W. • For Gill ASCII two wire point to point only mode use MetSet to change the Message setting from CONT (Continuous) to POLL, the node address letter may be changed if required.

  • Page 29: Using The Kalyx Rain Gauge Gmx550/Gmx551(Or User Supplied Rain Gauge)

    4-way connector (Gill Part No. 1957-10-066) to plug into the GMX551. Maximet GMX551 default tip size is set for 0.200mm/tip to match the Kalyx tipping bucket. A protective cap is supplied on the GMX551 4 way outlet socket. This should be fitted at any time that the external rain gauge cable is disconnected from the sensor.
  • Page 30 The GMX550/GMX551 is not supplied with a rain gauge or connecting cable. It is supplied with a 4 way connector. Maximet GMX550 default tip size is set for 0.000mm/tip (to be used with a Rain Yes or No indication Sensor that provides a contact closure for Rain and an open contact for No rain).

  • Page 31: Using The Maximet Gmx551 With Optional Gill Solid State Rain Gauge

    User Manual 5.8. Using the MaxiMet GMX551 with Optional Gill Solid State Rain Gauge. 9- way connector 20 Metre lead 4-way connector Wiring Details Maximet 20m cable supplied with Solid State Rain Gauge 4-Way Connector GMX551 9 Way Connector Signal Names Pin Nos.

  • Page 32: Maintaining Maximet

    User Manual Maintaining Maximet Safe Mode Major Repairs Warranty Repairs __________________________________________________________________________________________________ MaxiMet Page 32 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 33: Appendix A - Technical Specification

    ±2% RH across full range Resolution Units of Measure %, Rh, g/m3 Dewpoint Range -40C to +70C Resolution 0.1C C or F or K Units of Measure Sampling rate __________________________________________________________________________________________________ MaxiMet Page 33 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 34 Minimum Contact Closure time - 11mS Minimum time between closures - 500mS Capable of reading a switch contact closure providing the total digital switch contact resistance (contact and cabling) is less than 20 ohms __________________________________________________________________________________________________ MaxiMet Page 34 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 35 Format Date and Time YYYY-MM-DDThh:mm:ss.s, e.g. 2023-12-25-T22:34:56.1 Updating Manual setting or via GPS option Power Loss Accuracy ±10 seconds for at least 24 hours after power removed from Maximet Inclinometer X Tilt ±89 degrees Y Tilt ±89 degrees Z Orientation...
  • Page 36 Origin Standard Equipment (supplied with product) MaxiMet product Mating connector MetSet software*, to set-up and configure MaxiMet (comms mode, measurement units, reporting intervals, derived parameters, etc.) MetView software*, to view reported parameters MaxiMet User Manual* * downloadable from Gill Instruments website...
  • Page 37 Software MetSet (Configuration) Free software available here: https://gillinstruments.com/downloads/providing the means of configuration of the MaxiMet MetView Free software available here: https://gillinstruments.com/downloads/providing the means of viewing MaxiMet data graphically and logging data __________________________________________________________________________________________________ MaxiMet Page 37 Issue 9 Doc. No. 1957-PS-021...

  • Page 38: Appendix B Default Configurations

    SENSOR WIND : ON DATABITS : 8 UNITS WIND : MS STOPBITS : 1 NODIR : 0.00 PARITY : NONE AVGSHORT : 60 MODTERM : 10 AVGLONG : 10 MODICT : 1000 __________________________________________________________________________________________________ MaxiMet Page 38 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 39 Checksum, the 2 digit Hex Checksum sum figure is calculated from the Exclusive OR of the bytes between (and not including) the STX and ETX characters. MetSet Default Settings __________________________________________________________________________________________________ MaxiMet Page 39 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 40 Speed Over Ground, GPS Sensor Status, Sunrise Time, Solar Noon Time, Sunset Time, Position of the Sun, Twilight (Civil), Twilight (Nautical), Twilight (Astronomical), X-Tilt, Y-Tilt, Z-Orientation, User Information Field, System Date and Time, Supply Voltage, Status, Checksum ┐Q,269,000.03,311,003.17,000,000.00,000,000.00,000,001.45,135,011.05,0100,00000.200,000.200,N,042,+50.762 988:-001.539893:-0.80,064,+000.10,010B,+028,+028,1.2, +012.8,07:54,12:10,16:25,174:+18,17:03,17:45,18:24,+09,+03,+1,,2017-01-20T11:46:01.3,+05.0, 0000,└ 51 CHECK __________________________________________________________________________________________________ MaxiMet Page 40 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 41 Humidity, Heat Index, Air Density, Wet Bulb Temperature, Sunrise Time, Solar Noon Time, Sunset Time, Position of the Sun, Twilight (Civil), Twilight (Nautical), Twilight (Astronomical), X-Tilt, Y-Tilt, Z-Orientation, User Information Field, System Date and Time, Supply Voltage, Status, Checksum ┐Q,0999.5,0999.5,0999.5,040,+023.3,+009.1,08.45,,1.2,+015.1,07:58,12:08,16:19,162:+15,16:57,17:39,18:19,+00,+ 01,+1,,2018-01-16T10:55:38.5,+05.1,0000,└.1F __________________________________________________________________________________________________ MaxiMet Page 41 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 42 HASTN : +00000.00 DATABITS : 8 SENSOR RH : ON STOPBITS : 1 UNITS RH : % PARITY : NONE SENSOR SOLAR : ON MODTERM : 10 MODICT : 1000 __________________________________________________________________________________________________ MaxiMet Page 42 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 43 STOPBITS : 1 UNITS RH : % PARITY : NONE PRECIPITATION SENSOR : ON MODTERM : 10 PRECIPITATION UNITS : MM MODICT : 1000 ARPRECIP: ON PUPMSG STATUS : ON __________________________________________________________________________________________________ MaxiMet Page 43 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 44 +022.0 Temperature +008.5 Dewpoint +50.763004 GPS Latitude -001.539898 GPS Longitude +3.10 GPS Height location 2015-06-05 Date T10:19:30.8 Time +05.1 Supply Voltage 0000 Heater Status (OFF) 0004 Status └ Checksum __________________________________________________________________________________________________ MaxiMet Page 44 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 45 NODIR : 0.00 HASTN : +00000.00 PARITY : NONE AVGSHORT : 60 SENSOR RH : ON MODTERM : 10 AVGLONG : 10 UNITS RH : % MODICT : 1000 __________________________________________________________________________________________________ MaxiMet Page 45 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 46 Index, Air Density, Wet Bulb Temperature, Sunrise Time, Solar Noon Time, Sunset Time, Position of the Sun, Twilight (Civil), Twilight (Nautical), Twilight (Astronomical), X-Tilt, Y-Tilt, Z-Orientation, User Information Field, System Date and Time, Supply Voltage, Heater Status Status, Checksum ┐Q,301,000.01,180,000.08,000,000.00,000,000.00,000,000.00,000,000.00,0100,0998.9,0998.9,0998.9, 040,+023.1,+009.0,08.43,058,+50.763112:-001.540188:-0011.90,354,000.09,010B,,,1.2,+014.9, 08:01,12:15,16:28,170:+17,17:06,17:47,18:26,+00,+00,+1,2018-01-16T11:33:05.7,+05.0,0000,0004,└.67 __________________________________________________________________________________________________ MaxiMet Page 46 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 47 <ETX> is the End of String character (ASCII value 3). Checksum, the 2 digit Hex Checksum sum figure is calculated from the Exclusive OR of the bytes between (and not including) the STX and ETX characters. __________________________________________________________________________________________________ MaxiMet Page 47 Issue 9 Doc. No. 1957-PS-021...
  • Page 48 Sunset Time, Position of the Sun, Twilight (Civil), Twilight (Nautical), Twilight (Astronomical), X-Tilt, Y-Tilt, Z- Orientation, User Information Field, System Date and Time, Supply Voltage, Heater Status,Status, Checksum ┐Q,153,000.00,260,000.48,000,000.00,000,000.00,000,000.00,000,000.00,0100,0999.3 ,0999.3,0999.3,040,+023.3,+009.1,08.50,055,0000,00.00,+50.763012:-001.540143:+00 00.20,079,000.49,010B,,,1.2,+015.1,08:01,12:15,16:28,158:+15,17:06,17:47,18:26,+ 00,+01,+1,,2018-01-16T10:42:27.8,+05.0,0000,0004,└.48 __________________________________________________________________________________________________ MaxiMet Page 48 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 49 AVGSHORT : 60 SENSOR RH : ON MODTERM : 10 AVGLONG : 10 UNITS RH : % MODICT : 1000 SENSOR PRECIP: ON UNITS PRECIP : MM SENSOR SOLAR ON __________________________________________________________________________________________________ MaxiMet Page 49 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 50 Wet Bulb Temperature, Sunrise Time, Solar Noon Time, Sunset Time, Position of the Sun, Twilight (Civil), Twilight (Nautical), Twilight (Astronomical), X-Tilt, Y-Tilt, Z-Orientation, User Information Field, System Date and Time, Supply Voltage, Heater Status,Status, Checksum ┐Q,269,000.03,311,003.17,000,000.00,000,000.00,000,001.45,135,011.05,0100,1032.5,1032.5,1032.5,028,+023.0, +003.8,05.90,00000.200,000.200,N,042,0001,01.20,+50.762988:-001.539893:- 0.80,064,+000.10,010B,+028,+028,1.2,+012.8,07:54,12:10,16:25,174:+18,17:03,17:45,18:24,+09,+03,+1,2017-01- 20T11:46:01.3,+05.0,0000,0004,└ 51 __________________________________________________________________________________________________ MaxiMet Page 50 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 51 <ETX> is the End of String character (ASCII value 3) Checksum, the 2-digit Hex Checksum sum figure is calculated from the Exclusive OR of the bytes between (and not including) the STX and ETX characters. __________________________________________________________________________________________________ MaxiMet Page 51 Issue 9 Doc. No. 1957-PS-021...
  • Page 52 PARITY : NONE AVGSHORT : 60 SENSOR RH : ON MODTERM : 10 AVGLONG : 10 UNITS RH : % MODICT : 1000 SENSOR PRECIP : ON UNITS PRECIP : MM __________________________________________________________________________________________________ MaxiMet Page 52 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 53 Time, Solar Noon Time, Sunset Time, Position of the Sun, Twilight (Civil), Twilight (Nautical), Twilight (Astronomical), X-Tilt, Y-Tilt, Z-Orientation, User Information Field, System Date and Time, Supply Voltage, Heater Status,Status, Checksum ┐Q,269,000.03,311,003.17,000,000.00,000,000.00,000,001.45,135,011.05,0100,1032.5,1032.5,1032.5,028,+023.0, +003.8,05.90,00000.200,000.200,N,042,+50.762988:-001.539893:-0.80,064,+000.10,010B,+028, +028,1.2,+012.8,07:54,12:10,16:25,174:+18,17:03,17:45,18:24,+09,+03,+1,2017-01-20T11:46:01.3,+05.0, 0000,0004,└ 51 __________________________________________________________________________________________________ MaxiMet Page 53 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 54 <ETX> is the End of String character (ASCII value 3) Checksum, the 2-digit Hex Checksum sum figure is calculated from the Exclusive OR of the bytes between (and not including) the STX and ETX characters. __________________________________________________________________________________________________ MaxiMet Page 54 Issue 9 Doc. No. 1957-PS-021...
  • Page 55 PARITY : NONE AVGSHORT : 60 SENSOR RH : ON MODTERM : 10 AVGLONG : 10 UNITS RH : % MODICT : 1000 SENSOR PRECIP : ON UNITS PRECIP : MM __________________________________________________________________________________________________ MaxiMet Page 55 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 56 Wet Bulb Temperature, Sunrise Time, Solar Noon Time, Sunset Time, Position of the Sun, Twilight (Civil), Twilight (Nautical), Twilight (Astronomical), X-Tilt, Y-Tilt, Z-Orientation, User Information Field, System Date and Time, Supply Voltage, Heater Status, Status, Checksum ┐Q,269,000.03,311,003.17,000,000.00,000,000.00,000,001.45,135,011.05,0100,1032.5,1032.5,1032.5,028,+023.0,+003.8,05.90 ,00000.200,000.200,N,042,+50.762988:-001.539893:-0.80,064,+000.10,010B,+028, +028,1.2,+012.8,07:54,12:10,16:25,174:+18,17:03,17:45,18:24,+09,+03,+1,2017-01-20T11:46:01.3,+05.0,0000,0004,└ 51 __________________________________________________________________________________________________ MaxiMet Page 56 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 57: Appendix C - Connector And Cable Assembly

    User Manual Appendix C - Connector and Cable Assembly The Maximet is supplied with a mating 9-way connector. Part Name Souriau Clipper Part Number Connector 9-way CL1F1201 Backshell CL101021 Connector Female contact CM10SC10MQ Preparation Open the pack of connector parts supplied (Gill Part 1405-PK-069).
  • Page 58 Insert each contact pin until you feel a slight click. If you have inserted the contact into the incorrect hole it can be removed at this point by simply pulling it out. Please note there will be some resistance. Rear View of Connector __________________________________________________________________________________________________ MaxiMet Page 58 Issue 9 Doc. No. 1957-PS-021...
  • Page 59 Fit the connector to the MaxiMet so that you can finish assembling the connector. Screw the back shell onto the connector until it is fully in place. Please note that the final rotations can be slightly stiff.
  • Page 60 User Manual Cabling All MaxiMets have five output communication connection options: • USB (using the 1.8m Maximet RS232 to USB cable, Part No. 1957-10-065) • RS232 • RS422 • RS485 (Gill ASCII, two wire point to point) Modbus two wire networkable.
  • Page 61 Any cable wires not used should be isolated and grounded at the terminating equipment/user end. Digital 0V should be used in conjunction with RS422 Tx/Rx lines in order to improve noise immunity. __________________________________________________________________________________________________ MaxiMet Page 61 Issue 9 Doc. No. 1957-PS-021...

  • Page 62: Appendix D - Configuring Maximet With Metset

    Install MetSet software (V2.17.01 or higher) on to a PC from the Gill website at: http://gillinstruments.com/main/software.html Before you use MetSet check that Maximet is correctly connected to a serial COM port or USB COM port on your PC (maximum COM port number accepted by MetSet is 50).
  • Page 63 User Manual MetSet also saves a copy of the screen below as a Session Report File that can be accessed at the following destination: C:\GillAppsData\Metset\SessionReports. Example Summary of Maximet Device Settings SETTINGS ARE AS FOLLOWS: __________________________________________________________________________________________________ MaxiMet Page 63 Issue 9 Doc.
  • Page 64 When connected correctly a MetSet editing screen is available to read configuration settings, change configuration settings, save Maximet configuration settings to a PC file location, upload Maximet configuration settings from a PC file and view the Maximet raw data string output.
  • Page 65 ONLINE in green indicates the Maximet has been successfully connected to MetSet. ONLINE OFFLINE in grey indicates that MetSet is being used without a Maximet in communication with MetSet. 4800 is a report on the Maximet baud rate setting. 4800 COM23 COM 23 is a report on the Maximet COM port connection number.
  • Page 66 When Comms or Baud Rate settings are changed and saved to the device a warning is issued by MetSet. These setting changes will not become active until the Maximet Marine power is turned off and turned on again. The connecting device will then also need its Comms and Baud Rate settings changed to match the Maximet.
  • Page 67 Short Term Average: 60 (10-60) Configures WMO Short Term Average as the defined multiple of the output rate i.e. AVGSHORT 10 is a rolling average of the last ten outputs. __________________________________________________________________________________________________ MaxiMet Page 67 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 68 Map and declination figures in decimal figures can be obtained from: http://www.geosats.com/magdecli.html http://www.ngdc.noaa.gov/geomag/declination.shtml GPS Sensor: ON or OFF (for GPS sensor output option units) GPS Speed Units: MS, KTS, MPH, KPH, FPM __________________________________________________________________________________________________ MaxiMet Page 68 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 69 When the output rate is set to once per minute or once per hour, wind averaging is disabled. The default output rate from Maximet is one new reading every second. In this case the WMO averaged wind reading result will be based on: ��������...
  • Page 70 Status Code will read 0100 (Measurement Average Building). If Maximet is in polled mode then when polled (default 1Hz output) Maximet will output the last valid 10-minute wind speed and direction average, updated every minute along with last valid 1 minute gust magnitude, due to default WMO settings.
  • Page 71 (the station height), a correction is made to make the reading of the pressure sensor seem as if it were made at sea level. This means that the pressure reading has to be slightly increased from the value read by the Maximet sensor situated above sea level (often known as the station pressure).
  • Page 72 User Manual Humidity Humidity Sensor: ON or OFF Humidity Units: Reporting Report Format: USERDEF, DEFAULT, FULL or NMEA __________________________________________________________________________________________________ MaxiMet Page 72 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 73 Outputs Maximet Date and Time VOLT Outputs the Maximet Supply Voltage HEATSTAT Outputs the Maximet Heating System Status Code (see Appendix L p146) STATUS. Outputs the Maximet Sensors Status Code (see Appendix L p145) WINDSTAT Outputs Status Codes relating to Wind Sensor Data (see Appendix L p145) USERINF User Information up to 16 characters, excludes "@", ",", "*", "%"...
  • Page 74 Longitude. User Information: Sets the User Information field shall have a maximum size of 16 characters, comprised of printable ASCII characters (to exclude "@", ",", "*", "%" and "?"). __________________________________________________________________________________________________ MaxiMet Page 74 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 75 This field allows the user to, for instance, record installation or calibration dates, e.g. Cal due 15.08.24 PowerUp Status Message Output: ON or OFF E.g. MAXIMET GMX501-3B-0000 2669 V2.00.24 Reports MaxiMet Model details and Firmware version. Report Message Output: ON or OFF E.g. NODE,DIR,SPEED,CDIR,PRESS,RH,TEMP,DEWPOINT,SOLARRAD,TIME,VOLT,ST ATUS,CHECK Reports data string output parameters and output order.
  • Page 76 Stop Bits: 2 for No Parity, 1 for Even/Odd Parity Parity: NONE, ODD, or EVEN Termination Char ASCII code: 10, (0-255) Inter Char Timeout (mS): 1000 (500 to 10000) __________________________________________________________________________________________________ MaxiMet Page 76 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 77 User Manual Heating The heating tab can be used to change the Heater Control Settings used by Maximet. Heater Mode This setting selects the way the heater will work. The options are • Off this mode disables the heater until the heater setting is changed •...
  • Page 78 Configuration for Polled Mode (MaxiMet Set for Power Mode 0) To configure a Maximet unit for polled mode: Connect a default-set Maximet to a PC as described in Section 5.5. Open MetSet as described on Appendix D. Click on the Edit Comms page:- Set Protocol for required poll mode interface e.g.

  • Page 79: Appendix E - Configuring Maximet For Sdi-12

    Shut down the Maximet unit. Change the hardware connections for SDI-12 (see para 5.6). Power up the Maximet unit (SDI-12 supply voltage 9.6V to 16V DC). Allow 10 seconds for the unit to start up before sending an SDI-12 command.
  • Page 80 Degrees (positive values are N, negative are S) Longitude: Degrees (positive values are E, negative are W) Date: Years-Months-Days Time: Hours:Minutes:Seconds (h:min:s) Status 4 Digit Sensor Status Code (e.g. 0000 for a no-fault condition) __________________________________________________________________________________________________ MaxiMet Page 80 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 81 (ss=01-10 seconds) aXG2mm! set period of gust would be reported (mm = 01-60), where mm is the number of short term average periods. __________________________________________________________________________________________________ MaxiMet Page 81 Issue 9 Doc. No. 1957-PS-021...
  • Page 82 Measurement command to retrieve a Direction and Corrected Speed) option unit only), reading of the maximum time the Status MaxiMet will take to complete a measurement, have data ready and the number of data values. aD0! Retrieve a line of the <address><relative wind...
  • Page 83 Day, Hour, Minute, Second, Status aD0! Retrieve a line of the <address><year><month><day> 0+2015+06+15+14+07+52+0000<C above data. <hour><minute><second><status> R><LF> <CR><LF> Address, Sunrise Time, atttn<CR><LF> 00039<CR><LF> aM7! Solar Noon Time, Sunset Time, Position __________________________________________________________________________________________________ MaxiMet Page 83 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 84 <address><relative Average Wind 0+000+000.00+309+001.42+0000<C above data. Direction (0-359)><Relative Average R><LF> Wind Speed (m/s)><Relative Gust Wind Direction (0-359)<Relative Gust Wind Speed (m/s)><Status><CR><LF> Concurrent atttnn<CR><LF> 000350<CR><LF> measurements grouped into primary measurements, time/location, __________________________________________________________________________________________________ MaxiMet Page 84 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 85 1807+1846+0004<CR><LF> azimuth><sun position elevation><twilight civil><twilight nautical><twilight astronomical><status><CR><LF> aD6! Retrieve a line of the <address><compassh><pitch><roll> 0+159+00.00+00.0+0000<CR><LF> above data. <status><CR><LF> set measurement aUM/S<CR><LF> 0UM/S<CR><LF> aXU1! units for aM8! to m/s __________________________________________________________________________________________________ MaxiMet Page 85 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 86 (ss=01- 10 seconds) aXG2mm! set period of gust aG2<CR><LF> 0G2<CR><LF> would be reported (mm = 01-60), where mm is the number of short term average periods. __________________________________________________________________________________________________ MaxiMet Page 86 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 87: Appendix F - Configuring Maximet For Modbus

    Report slave/server ID 0x11 Requires: Maximet MetSet Software Connect a Maximet to a PC COM port (default communication is RS232). Open Gill MetSet Software. Click on Connect and Read to reach the editing pages as shown below. 1. Select the Modbus page...
  • Page 88 Node ID: Default is Q Not used for Modbus Output Rate: Default is 1Hz Set update rate for Maximet Data Message Mode: Default is CONT Ensure that the setting is CONT mode; Message Mode POLL is not applicable for Modbus use.
  • Page 89 To work out Modbus register numbers applicable to a Maximet parameter, start out with setting up the Maximet in ASCII mode and determining which parameters are to be output, and the exact order that they are to be output before setting to Modbus Comms.
  • Page 90 32 Bit Floating Point Value Y TILT 32 Bit Floating Point Value Z ORIENTATION 32 Bit Floating Point Value COMPASS HEADING 32 Bit Floating Point Value GPS HEADING 32 Bit Floating Point Value __________________________________________________________________________________________________ MaxiMet Page 90 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 91 • Registers start at address 40001. • Holding registers are available in the order of the Maximet data string (which can be established by the REPORT command in non-Modbus Gill ASCII Mode). • If measurements cannot be computed (i.e. a blank field in Gill mode output string/conditions for reporting Wind Chill/ Heat Index are not being met), their Holding Register contents shall be set to the Maximum Positive value (0x7FFFFFFF for 32-bit format data (both floating point and integer), and as 0x7FFF for 16-bit format data).
  • Page 92 GPS Latitude 32bit float 40013-14 GPS Longitude 32bit float 40015-16 GPS Height 16ch string 40017-24 Date 16ch string 40025-32 Time 32bit float 40033-34 Supply Voltage 32bit UINT 40035-36 Status __________________________________________________________________________________________________ MaxiMet Page 92 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 93 GPS Latitude 32bit float 40017-18 GPS Longitude 32bit float 40019-20 GPS Height 16ch string 40021-28 Date 16ch string 40029-36 Time 32bit float 40037-38 Supply Voltage 32bit UINT 40039-40 Status __________________________________________________________________________________________________ MaxiMet Page 93 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 94 40007-08 Temperature 32bit float 40009-10 Dew point 32bit float 40011-12 Solar Radiation 16ch string 40013-20 Date 16ch string 40021-28 Time 32bit float 40029-30 Supply Voltage 32bit UINT 40031-32 Status __________________________________________________________________________________________________ MaxiMet Page 94 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 95 40011-12 Relative Humidity 32bit float 40013-14 Temperature 32bit float 40015-16 Dew point 16ch string 40017-24 Date 16ch string 40025-32 Time 32bit float 40033-34 Supply Voltage 32bit UINT 40035-36 Status __________________________________________________________________________________________________ MaxiMet Page 95 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 96 40013-14 Temperature 32bit float 40015-16 Dew point 32bit float 40017-18 Solar Radiation 16ch string 40019-26 Date 16ch string 40027-32 Time 32bit float 40033-34 Supply Voltage 32bit UINT 40035-36 Status __________________________________________________________________________________________________ MaxiMet Page 96 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 97 Total Precipitation 32bit float 40019-20 Precipitation Intensity 32bit float 40021-22 Solar Radiation 16ch string 40023-30 Date 16ch string 40031-38 Time 32bit float 40039-40 Supply Voltage 32bit UINT 40041-42 Status __________________________________________________________________________________________________ MaxiMet Page 97 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 98 40015-16 Dewpoint 32bit float 40017-18 Total Precipitation 32bit float 40019-20 Precipitation Intensity 16ch string 40021-28 Date 16ch string 40029-36 Time 32bit float 40037-38 Supply Voltage 32bit UINT 40039-40 Status __________________________________________________________________________________________________ MaxiMet Page 98 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 99 GPS Latitude 32bit float 40025-26 GPS Longitude 32bit float 40027-28 GPS Height 16ch string 40029-36 Date 16ch string 40037-44 Time 32bit float 40045-46 Supply Voltage 32bit UINT 40047-48 Status __________________________________________________________________________________________________ MaxiMet Page 99 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 100 User Manual Simply Modbus program reading example, Maximet GMX550 or GMX600 default output Modbus data as follows: Simply Modbus program reading example, Maximet GMX550 or GMX600 with GPS default output Modbus data as follows: Register data 40001 to 40006 will be as per the above example.

  • Page 101: Appendix G - Configuring Maximet For Nmea 0183 Output

    User Manual Appendix G - Configuring Maximet for NMEA 0183 Output Connect a default set Maximet to a PC as described in para 5.5. Open MetSet as described on Appendix D and click on the Reporting page. Change the Report Format drop down menu from USERDEF to NMEA.
  • Page 102 Checksum Position Fix Indicator: Value Description Fix not available or invalid GPS SPS Mode, fix valid Differential GPS, SPS Mode, fix valid Not supported Dead Reckoning Mode, fix valid __________________________________________________________________________________________________ MaxiMet Page 102 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 103 TILT Name of the Sensor Checksum <CR><LF> End of message termination Example GMX200 NMEA Data String. $WIMWV,230,R,000.01,N,A*0D $WIMWV,048,T,000.79,N,A*09 $GPGGA,095011.000,5045.8066,N,00132.4000,W,1,06,1.5,-3.0,M,47.8,M,,0000*6D (GPS unit) $PGILT,A,+00,D,+01,D,+1,TILT*35 Repeated every second (1Hz output). __________________________________________________________________________________________________ MaxiMet Page 103 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 104 Where:- $WIMWV Wind Instrument Mean Wind Direction and Velocity Wind Direction Relative Wind measurement, Wind Speed and/or Direction information, reported with respect to the MaxiMet north marker 000.03 Wind Speed Knots (NMEA output fixed to Knots measurement only) Acceptable measurement (V is a void fail measurement) Hex Checksum <CR>...
  • Page 105 Dead Reckoning Mode, fix valid Checksum, the 2 digit Hex Checksum sum figure is calculated from the Exclusive OR of the bytes between (and not including) the $ and * characters. __________________________________________________________________________________________________ MaxiMet Page 105 Issue 9 Doc. No. 1957-PS-021...
  • Page 106 TILT Name of the Sensor Checksum <CR><LF> End of message termination Example GMX240 NMEA data string (with GPS option): WIMWV,311,R,000.01,N,A*0F $WIMWV,341,T,,N,A*13 $WIXDR,Y,000.000,M,PRECIP*77 $GPGGA,000036.064,,,,,0,00,,,M,0.0,M,,0000*51 $PGILT,A,-22,D,+67,D,-1,TILT*35 Repeated every second (1Hz output). __________________________________________________________________________________________________ MaxiMet Page 106 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 107 Z-Orientation "+1" shall be reported if the unit is installed upright, or "-1" if facing downwards TILT Name of the Sensor Checksum <CR><LF> End of message termination Example GMX301 NMEA Data String. $WIXDR,C,+023.3,C,TEMP,P,0.9995,B,PRESS,H,040,P,RH,Z,2155,W,SOLAR*67 $PGILT,A,+00,D,+01,D,+1,TILT*35 Repeated every second (1Hz output). __________________________________________________________________________________________________ MaxiMet Page 107 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 108 Z-Orientation "+1" shall be reported if the unit is installed upright, or "-1" if facing downwards TILT Name of the Sensor Checksum <CR><LF> End of message termination Example GMX 400 Data. $WIXDR,C,+023.2,C,TEMP,P,1.0281,B,PRESS,H,037,P,RH,Y,000.000,M,PRECIP*0A __________________________________________________________________________________________________ MaxiMet Page 108 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 109 Where: - $WIMWV Wind Instrument Mean Wind direction and Velocity. Wind Direction. Relative Wind measurement, wind speed and/or direction information, reported with respect to the MaxiMet North marker. 000.03 Wind Speed. Knots (NMEA output fixed to Knots measurement only). Acceptable measurement (V is a void fail measurement).
  • Page 110 <LF> is a Line Feed Character (ASCII hex value a) Checksum, the 2 digit Hex Checksum sum figure is calculated from the Exclusive OR of the bytes between (and not including) the $ and * characters. __________________________________________________________________________________________________ MaxiMet Page 110 Issue 9 Doc. No. 1957-PS-021...
  • Page 111 TILT Name of the Sensor Checksum <CR><LF> End of message termination Example GMX500 NMEA Data String. $WIMWV,275,R,000.01,N,A*0C $WIMWV,180,T,000.11,N,A*02 $WIXDR,C,+023.1,C,TEMP,P,0.9989,B,PRESS,H,040,P,RH*25 $GPGGA,113342.000,5045.7837,N,00132.4127,W,1,06,1.3,-10.2,M,47.8,M,,0000*56 (GPS option unit) $PGILT,A,+00,D,+01,D,+1,TILT*35 Repeated every second (1Hz output). __________________________________________________________________________________________________ MaxiMet Page 111 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 112: Appendix H Safe Mode

    Connect the Maximet for RS232 communication as detailed in para 5.5. Open Gill MetSet Software (Appendix D). Click on Connect and Read. MetSet will scan COM port settings for a connected Maximet but as the COMMS protocol is not matched will be unable initially to find the Maximet.
  • Page 113 User Manual Ensure the Maximet is wired for RS232 operation and power and click on Next. Enter the Maximet COM Port connection number. NOTE: Use dongle check box is only applicable when using a MetConnect device. Ensure power is now disconnected from the Maximet.
  • Page 114 User Manual Now click on Next. Re-connect power to the Maximet. NOTE: If using the Gill Instruments RS232 to USB configuration cable then plug in the 9-way connector to the base of the MaxiMet. __________________________________________________________________________________________________ MaxiMet Page 114 Issue 9 Doc.
  • Page 115 User Manual 10. Device will now connect and display a Summary of Device settings. __________________________________________________________________________________________________ MaxiMet Page 115 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 116 Left click the mouse in the blank terminal screen. Hold down the * (asterisk) key on the keypad. With the * key still held down, apply power to the Maximet If using the Gill Instruments RS232 to USB configuration cable then plug in the 9-way connector to the base of the MaxiMet.
  • Page 117 Type Q and press Enter to exit SAFE MODE. Data will now scroll on screen. Close the 4800 baud rate Wind or terminal program. Power down the Maximet and re-apply power. Open Gill MetSet software and read settings/change settings as required. __________________________________________________________________________________________________...

  • Page 118: Appendix I - Using A Terminal Program To Run Maximet Tilt Function

    Appendix I - Using a Terminal Program to run Maximet Tilt function For those Maximet units that have a Tilt function output it is possible to use a Check Tilt command that results in just X, Y, Z Tilt information (and compass output with wind output models) being output at 4Hz with additional decimal point accuracy, should this be required for installation set-up.
  • Page 119 User Manual __________________________________________________________________________________________________ MaxiMet Page 119 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 120: Appendix J - Using A Terminal Program To Set Maximet Date And Time

    Appendix J - Using a Terminal Program to set MaxiMet Date and Time As an alternative to using MetSet to set Maximet time which might add a delay to time setting as MetSet saves settings (up to 60 seconds) then Maximet TIME can be set manually with potentially more accuracy against a reference time as follows.

  • Page 121: Appendix K - Using Gill Metview Software To View The Maximet Data String

    MetView software allows you to view the Maximet data visually and has a simple data logging facility. Before you can use MetView, check that Maximet is correctly connected to a serial COM port or USB COM port on your PC.
  • Page 122 User Manual Connection is Use (tick) if the Maximet connection to the PC has only transmit wires connected and a MetSet version of its current tick box and click on the Scan button. Upload a MetSet generated device file from a PC location as directed.
  • Page 123 User Manual To select the other Maximet then in the data view screen select the Disconnect button and use the drop-down menu below to select and connect to the new Maximet. __________________________________________________________________________________________________ MaxiMet Page 123 Issue 9 Doc. No. 1957-PS-021...
  • Page 124 User Manual The MetView Console When connected correctly, MetView displays its data-monitoring console. This consists of gauges for all of Maximet enabled parameters. Buttons beneath each of the gauges allow you to choose the displayed units and other options. Each gauge also shows the maximum and minimum values recorded during the current session.
  • Page 125 User Manual __________________________________________________________________________________________________ MaxiMet Page 125 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 126 User Manual MetView Console Display Options MetView Scale and Units of Measure Options MetView Averaging Options MetView Max/Min Markers MetView Screen Settings Options __________________________________________________________________________________________________ MaxiMet Page 126 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 127 MetView thermometer style gauge ranges may be altered to view changes in sensor readings more visibly. These changes only affect MetView settings and do not affect the Maximet output or logged data. For instance, if the typical Temperature measurement range required is from 0 to +30 °C then the temperature gauge range can be adjusted to reflect this.
  • Page 128 User Manual Double click on the reading to bring up the graph __________________________________________________________________________________________________ MaxiMet Page 128 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 129 User Manual Data Logging MetView logs data based on the Maximet configuration not on the MetView console settings.To start, click on the Log disabled button on the open MetView console. The Logging dialog box is displayed. Set up a logging file: Select Enable Logging (adds a tick to the box).
  • Page 130 Click on the OK button. If logging has stopped, the Logging button shows a red-background cross instead of the green-background tick (see above). An example of the logged MaxiMet data .log file opened by Notepad is shown below: __________________________________________________________________________________________________ MaxiMet...
  • Page 131 Open Tera Term. Select Serial. Select Maximet connected COM port. Click on OK. Tera Term opens at 9600 baud by default, but Maximet uses 19200 as a default, so change Tera Term baud rate setting to 19200. __________________________________________________________________________________________________ MaxiMet Page 131 Issue 9 Doc.
  • Page 132 Select Setup from the top menu. Click on Serial Port from the drop down menu. Change baud rate to 19200. Click on OK. Data will be output as follows: __________________________________________________________________________________________________ MaxiMet Page 132 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 133 User Manual __________________________________________________________________________________________________ MaxiMet Page 133 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 134 User Manual __________________________________________________________________________________________________ MaxiMet Page 134 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 135 User Manual __________________________________________________________________________________________________ MaxiMet Page 135 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 136 User Manual Understanding Logged Data __________________________________________________________________________________________________ MaxiMet Page 136 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 137: Appendix L - Maintenance & Fault-Finding

    Users can check operation of the rain gauge by performing a simple test of functionality by spraying some water using a mist nozzle similar to that used in many households for watering plants. The Maximet rain gauge should register incremental rain fall when sprayed with water.
  • Page 138 Funnel filter kit Funnel tube • Clean or replace the gauze filter into the filter tube and replace the top cap (for spares contact Gill Instruments). __________________________________________________________________________________________________ MaxiMet Page 138 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 139 If the bucket balances easily then examine the bucket closely for any dirt or wear on the pivot pin and bucket tubes. Any wear will require the unit to be repaired/replaced. __________________________________________________________________________________________________ MaxiMet Page 139 Issue 9 Doc. No. 1957-PS-021...
  • Page 140 Internal parts require no lubrication. Maximet GMX550/551 is supplied without a rain gauge. The Kalyx calibration figure (0.2mm) can be seen on the label inside the rain gauge on the underneath of the bucket and adjacent to the tip assembly.
  • Page 141 It is recommended the solar sensor should be cleaned every month as a minimum. In order to retain compliance with ISO 9060 it is recommended that the solar Maximet unit is returned for calibration every 12 months.
  • Page 142 +12V dc across the side connector pins, take care not to short out the pins. Calibration A calibration check can be done by any user/distributor by comparing the values measured by Maximet with a reference value or in an environmental chamber. Users should understand that these checks are not the same as the calibration checks or calibration done at Gill, but they can provide users with some degree of confidence to the validity of their measurements.
  • Page 143 It is usual for anemometer TX + to be connected to converter device RX +. If appropriate use Safe Mode to attempt to obtain communication with the Maximet. Check that the communication settings of the Maximet and host system match. Try a slower baud rate. Corrupted output.
  • Page 144 Corrected Wind measurement not 0200 Compass corrected wind measurement failure. available. NMEA acceptable data. No fault conditions detected in measurement period NMEA void data. Fault condition detected in measurement period. __________________________________________________________________________________________________ MaxiMet Page 144 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 145 Safe Mode If a unit is received that will not communicate or the configuration settings are not known, then Safe Mode can be used to establish communication with the Maximet and change configuration settings (see Appendix H). Bench Test See para 3.9.

  • Page 146: Appendix M - Maximet Output Parameters Selectable Using Metset Software

    User Manual Appendix M - MaxiMet Output Parameters selectable using MetSet Software __________________________________________________________________________________________________ MaxiMet Page 146 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 147 �� ��_���� = �� ��_������������ = ����ℎ �������������������� �� ������������ ������������������ ���� "�� �������� �� ��_������������ = ����ℎ �������������������� �� ������������ ������������������ ���� "�� �������� �� �� = ������_��ℎ������_������ __________________________________________________________________________________________________ MaxiMet Page 147 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 148 �� = ���������� ���� ��������_������ ���������������� ������ ������_������_��������_������ �������������� ���������� ��ℎ ��_������ = �� �� ������������ �������������� �������������� ���������� �� ��ℎ ��_������ = �� �� ������������ �������������� �������������� ���������� �� __________________________________________________________________________________________________ MaxiMet Page 148 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 149 ∑ ��_���� �� ��=1 ��_���� = �� ��_���� = ����ℎ ��ℎ������ �������� �� ������������ �������������� �������������� ���������� �� ��_���� = ����ℎ ��ℎ������ �������� �� ������������ �������������� �������������� ���������� �� __________________________________________________________________________________________________ MaxiMet Page 149 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 150 �� = ����( �� × ���� ���� + ���� × ( −ℎ ) ���� ��0 × �� �� = ����( �� × ���� ���� + ���� × ( −ℎ ) __________________________________________________________________________________________________ MaxiMet Page 150 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 151 User Manual �� × ���� �� = �� __________________________________________________________________________________________________ MaxiMet Page 151 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 152 User Manual ���� ���� = �� − 1 �� �� = ⁄ ���� �� ������ .���� ���� = __________________________________________________________________________________________________ MaxiMet Page 152 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 153 User Manual __________________________________________________________________________________________________ MaxiMet Page 153 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 154 User Manual __________________________________________________________________________________________________ MaxiMet Page 154 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 155 User Manual �� �������������� = �� × �� __________________________________________________________________________________________________ MaxiMet Page 155 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 156 User Manual __________________________________________________________________________________________________ MaxiMet Page 156 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 157 User Manual __________________________________________________________________________________________________ MaxiMet Page 157 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 158 User Manual __________________________________________________________________________________________________ MaxiMet Page 158 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 159 User Manual   __________________________________________________________________________________________________ MaxiMet Page 159 Issue 9 Doc. No. 1957-PS-021 February 2024...
  • Page 160 User Manual __________________________________________________________________________________________________ MaxiMet Page 160 Issue 9 Doc. No. 1957-PS-021 February 2024...

  • Page 161: Appendix N Guarantee, Fcc & Emc

    150 to 200kHz. If any interruption to performance is experienced due to external electromagnetic signals the product will automatically return to specification once the signals levels have diminished. __________________________________________________________________________________________________ MaxiMet Page 161 Issue 9 Doc. No. 1957-PS-021...

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