Dynamax Dynamet 5 Скачать руководство пользователя | Manualshive

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The MaxiMet range of compact weather stations is designed and manufactured by Gill Instruments. MaxiMet products use
reliable, high quality instruments to provide accurate meteorological information in a wide variety of applications.

TEMP, HUMIDITY & PRESSURE

WIND

GPS (OPTION)

PARAMETERS

Air Pressure / Temperature

Relative / Absolute humidity

Naturally aspirated UV stable
radiation shield

Protection against wind-blown
precipitation/dust

Wind speed & direction

Apparent and true wind (with GPS)

WMO wind averages and gust

Compass

GPS (optional) gives height above

sea level, latitude and longitude

Height above sea level

m

Sunrise/sunset

Position of the sun

4PMBS/PPO

Twilight

MSL pressure

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Temperature

°C / °F / °K

Relative humidity

% Rh, g/m

HLH

Barometric pressure

hPa, bar, mm Hg

Wet bulb temperature

°C / °F / °K

Absolute humidity

g/m3

Air density

kg/m3

Wind speed

m/s, km/hr, mph, kts, ft/min

Wind direction

°

Wind chill

°C / °F / °K

True/apparent wind

Outputs

RS232, 422, 485 (ASCII), SDI-12, NMEA,
MODBUS, Analogue (option)

Temperature, humidity, pressure.

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GMX500 Features

MaxiMet

222mm

38.5mm

44.5mm

7.5mm

142mm

All MaxiMet Models Feature

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Содержание Dynamet 5

Страница 1: ...DYNAMET 5 Weather Station User Manual v 1 1 ...

Страница 2: ...hat any license either express or implied is granted under any patent right copyright or other intellectual property right of DYNAMAX relating to this product or process There are no implied warranties of merchantability or of fitness for a particular purpose given with the sale of any goods DYNAMAX Inc shall not be liable for consequential incidental or special charges Dynagage Dynamet Flow32 Flo...

Страница 3: ...Dynamax Inc 2 ...

Страница 4: ... Bavel Michael van Bavel BSEE Sai P Gonuguntla MSEE Program and algorithms Copyright Dynamax Inc 2006 Portions of the manual are courtesy of Campbell Scientific Inc and are subject to Copyright 2016 Campbell Scientific Inc Trademarks used are property of their respective owners Wind direction sensor SC32B Voltage Regulator for Solar panel Internal battery 12V 5 AHr ...

Страница 5: ...Dynamax Inc 4 ...

Страница 6: ...Solar Panel Installation 22 3 2 3 Install Dynamet 5 Enclosure 23 3 3 Sensor Installation 24 3 3 1 MaxiMet GMX500 24 3 3 2 Solar Radiation LI200S 28 3 3 3 Rain Gauge TE525 30 3 3 4 Soil Temperature Sensor TM 10 31 3 3 5 Soil Moisture Sensor ML3 Theta Probe 31 4 0 Lascano VanBavel ETP Program 32 4 1 Application of ETP Information 32 4 2 ET Program Basics 34 4 2 1 Elevation and Average Barometric Pre...

Страница 7: ... RFMX 59 7 1 1 Specifications 60 7 1 2 List of Hardware 60 7 1 3 Programming 61 7 1 4 Antenna Tower 61 7 1 5 Host Modem Installation 62 7 1 6 Remote Station Installation 62 7 1 7 Use of Repeater 63 7 2 Dual band cellular wireless Modem GSM 64 7 3 Short haul Modem SHM 67 7 3 1 Specifications 67 7 3 2 Hardware Configuration 68 7 3 3 Troubleshooting 68 7 4 Modes of Communication 69 7 4 1 Modes of Con...

Страница 8: ... Van Bavel Evapotranspiration ETP for computing ETP in mm hr with daily water use Crop growth models and Crop Water Index are developed with this information for grower applications of irrigation pest control and performing the optimum harvest Many other crop manager decisions can benefit from the hourly weather records and current information Standard evapotranspiration modeling software is packa...

Страница 9: ...stalled at the back of the solar panel Sensor cables with sensors installed on the end and 5 RS232 interface cable exit from the bottom of the system enclosure Each sensor lead is labeled with a sequence number Be careful at all times not to step on or otherwise bend the gage connector leads A CD Rom Containing your programs includes PC400 software supplied with Dynamet 5 systems A PC400 manual is...

Страница 10: ...Stand 6 CR1000 Data Logger 7 GM500 MaxiMet Ultrasonic Wind Speed Wind Direction Relative Humidity Temperature Barometric Pressure Dew Point 8 6ft SDI 12 Cable 9 TE525 Tipping Bucket Rain Gage with 25ft lead 10 TM10 Soil Temperature Probe 11 10W Solar Panel Mounts 12 5Ahr 12V Battery 13 Enclosure 10 x 8 Mounting Brackets Hardware 14 Serial RS232 to USB Adapter 15 1 SCH40 Aluminum Pipe x 48 ...

Страница 11: ...nication to remote installations for long distances of up to 40 Miles 9600 baud rate RFMX modems allow point to point and point to multi point configurations between central PC and multiple data loggers connected to it RFMX modems can be setup using PC400 or LoggerNet software RFMX is also offered in a modem kit Model RFMXMK with surge protector high gain antenna connectors assembled in a weatherp...

Страница 12: ...is and accumulated daily ETP mm day Dynamet 5 weather station is based on CR1000 data logger Hence can be operated using any of the following data logger support software PC400 LoggerNet For Procedure to connect program download data refer to chapter 5 In this manual we describe working with Dynamet 5 weather station using PC400 As described above full capabilities of Dynamet 5 weather station is ...

Страница 13: ...the PC400 Directory click on it Then find the installation autorun icon Double click on autorun exe to launch the installation The installation wizard will guide you through the process Any of these directories can be used for installation C CampbellSci Program Files PC400 Default install directory or D CampbellSci Program Files PC400 or E CampbellSci Program Files PC400 or C CampbellSci PC400 or ...

Страница 14: ...bellSci PC400 This can be changed by specifying a different path location on the hard drive Location of working directory will not affect the operation of PC400 or Flow32w software This directory stores temporary files Following is a typical list of working directory when working directory and PC400 executables are stored in different locations ...

Страница 15: ...ges to these files are not allowed you can make changes in the CRBasic editor and save the modified program with a new file name In addition if the Dynamet 5 system shipped is a custom one with additional soil moisture sensors etc these are shipped with custom programs Dynamet 5Cust1 Cr1 and Dynamet 5Cust1Tst Cr1 or similar names in a CD disk Create a directory for your weather station control pro...

Страница 16: ...its are shipped from our factory So all the assembly and programming of the weather station is performed at our factory This leaves end user with only installation of the weather station at the required site Dynamet 5 weather station installation on Tripod Model CM6 or CM10 is explained in detail in Tripod Weather station Installation manual supplied with Dynamet 5 This chapter discusses basics of...

Страница 17: ...king pen Open end wrenches 3 8 7 16 9 16 Socket wrench and 7 16 deep well socket Level 12 24 5 64 Allen wrench Straight bit screwdrivers small medium and large Magnetic compass Calculator Volt Ohm meter Wire ties and tabs Conduit and associated tools as required 6 ladder Data logger prompt sheet manuals Station log pen Lock and key for enclosure ...

Страница 18: ...Dynamet 5 17 ...

Страница 19: ...Dynamax Inc 18 Dynamet 5 Logger Assembly wiring internal battery and solar charge regulator ...

Страница 20: ...eather station starts working and collect data at the specified intervals Monitor sensor output and calculated ET data 11 If the sensors data and ETP output are with in the acceptable ranges means that the sensors and system are installed properly 12 Now modify the Dynamet 5 cr1 program for site specific parameters save with a different name Compile the new program and send to logger Now the data ...

Страница 21: ...sturbance to the ground surface or vegetation Apply pipe dope and Teflon tape to threads on the cross arm mount and 1 1 4 end of the mast To prevent cross threading hand thread the cross arm mount in to the mast s bell reducer and then tighten with a pipe wrench Hand thread the mast into the threaded coupling on the tripod center bracket and then tighten with a pipe wrench Mark the tripod legs to ...

Страница 22: ...e sent screws in the two brass ground lugs attached to the center bracket of the tripod Strip 1 of insulation from the other end of the 4AWG wire and inset it into the lower ground lug Strip 1 of insulation from one end of the 12AWG wire and insert it into the upper ground lug Tighten the setscrews Attach the other end of the 12AWG wire to the ground lug of the enclosure Attach 019ALU cross arm to...

Страница 23: ...ulation from one end of the 4AWG wire and insert it between the rod and the clamp Tighten the clamp bolt 3 2 2 Solar Panel Installation Solar panel with regulator models are shipped with a 12V regulator attached at the back of the panel A 15 cable is attached to the regulator and the other end of the cable must be connected to the pigtail hanging from the Dynamet 5 conduit labeled Solar Panel Moun...

Страница 24: ...is not necessary of an end user to make any wiring inside the enclosure All the connectors are accessible out of the box Position the enclosure on the north side of the mast or tower northern hemisphere Secure enclosure as shown in the figure using U bolts and mounting brackets Route the 12AWG wire from the Ground Lug on the enclosure to the tripod grounding clamp Tighten the screws Grounding is c...

Страница 25: ...m 3 3 1 MaxiMet GMX500 MaxiMet GMX500 is an advanced compact weather station designed and manufactured by Gill instruments using proven technology to measure meteorological and environmental parameters to international standards The MaxiMet uses the Gill WindSonic wind speed and direction sensor The WindSonic measures the times taken for an ultrasonic pulse of sound to travel from the North N tran...

Страница 26: ... and or direction uncorrected but relative to the north marker which may not be facing North o Corrected wind with the aid of the Compass Magnetic North corrected wind direction can be output o True wind wind speed and or direction information corrected by GPS for any direction misalignment of the north marker and or for any motion of the station E g vehicle or vessel A Met Spec Multi Plate Radiat...

Страница 27: ...d for the orientation of the sensor The output of the wind direction is relative to magnetic North The MaxiMet compass is calibrated at Gill Instruments before the unit is delivered Prior to installing MaxiMet it is suggested that for best accuracy a declination figure should be entered Use of the Compass Corrected Wind direction readings allows the unit be installed such that accurate positioning...

Страница 28: ...t Support Tube inside the mast and secure with bolt The support tube will fit snug inside the mast for added stabilization as shown above To reach a designed height of 2m the distance between the ground to the top of the stand should be 40 On the legs of the tripod the distance from the bolt to the end of the bracket should be 18 Install the MaxiMet GMX500 on top of the support tube using the supp...

Страница 29: ... cross arm stand and mounted on to one end of the cross arm 019ALU Pyranometer Cross stand When using cross stand instead of the mounting arm Position the mounting plate 5 above the NU RAIL and tighten the setscrews Position the base of the sensor in the mounting flange on the LI2003S and tighten the setscrews with allen wrench provided Adjust the three leveling screws flush with the bottom of the...

Страница 30: ... channel A 100 Ohm 1 precision resistor is installed between the High H and Low L of the differential channel A multiplier must be entered in the CR1000 Dynamet 5 program Dynamet 5 cr1 before any valid data can be obtained from the sensor Each LI200S sensor is calibrated at the factory and shipped with date of calibration constant and LICOR calibration constant labeled as multiplier on the sensor ...

Страница 31: ... 10 from the tripod installation Install a vertical pole Mount the rain gauge to the vertical pipe Route the sensor lead to the Dynamet 5 enclosure Tripod in plastic or metal conduit Alternatively the rain bucket can be set on a level ground away from the tripod ...

Страница 32: ...l ML3 soil moisture sensor measures volumetric soil moisture content by the principle of dielectric constant of the medium changes with water content The changes in dielectric constant is measured in mV DC voltage Dynamet 5 weather station reads the DC voltage and converts to volumetric soil content in Soil moisture sensor ML3 is wired to the Dynamet 5 weather station Select the location for insta...

Страница 33: ...the collected data Output of the data logger already contains raw sensors data computed ET data as well as daily accumulated data 4 1 Application of ETP Information In the interpretation of data on the sap flow rates in crops and trees it is essential to compare their hourly pattern within that of the concurrent evaporation demand A general comparison can also be made of daily totals as an indicat...

Страница 34: ... should be stated The ETP estimate is only a quantitative measure of the evaporative demand and is not intended to be an estimate of the actual water use by the crop or the trees even if they are well watered Therefore the two variables ETP and stem or trunk flow rate are expressed as mm per hour and kg plant hour respectively even though the water use by vegetation is often also expressed as mm p...

Страница 35: ...r in high turf grass zom 2 0 wind speed height of measurement in meters 2 m typical elf 100 elevation of station in feet 100 ft being only an example has 1004 0 Specific air heat capacity in J KgC In this section we discuss definition of these parameters and their units followed by procedure to modify these parameters in Dynamet 5 program to meet the geography of the location of weather station 4 ...

Страница 36: ...Hourly average solar radiation W m2 hta Hourly average of air temperature degC hrh Hourly average or relative humidity hws Hourly average of wind speed M s hts Hourly average of s temperature DegC Calculated variables Notation Description Units had Air Density Kg m3 hum Ambient Humidity Kg m3 ras Aerodynamic resistance S m skl Sky long wave radiation W m2 htc Surface temperature DegC rnt Net radia...

Страница 37: ...241 0 70 0 2 273 8 67 5 1 0 1 0 16 0 ln 16 0 ln 2 273 323 1 2 1013 1548 1 lg hta hdp hdp e hum hta E skl hws when hws zot zom ras or hws zot zom ras hdp e hum abp had n calculatio ET for orithm a RCM htc hta has had ras lev ras hum htc e ras hta has had htc hta skl htc E hgr root htc htc htc htc 2 273 16 303 2 273 323 1 2 273 16 303 2 273 8 67 5 80 0 237 269 17 4 10 3600 2 273 16 303 2 273 8 67 5 ...

Страница 38: ...erate we recommend the user to modify the site specific constants variables to meet the geography of the location where the station is setup compile the program and send the new program to logger These site specific variables are Parameter Constant notation in program Description Units Default Values zom C_ZOM Height of measurement M 2 0 zot C_ZOT Roughness parameter for heat and vapor profile M 0...

Страница 39: ...e changes if necessary Const INT_SCAN Const INT_STORE Const C_ZOM Const C_ZOT Const C_ELF Const C_HAS The following site specific parameters must be modified to meet the geographical location at which the station is setup to collect data Timing loop parameters are options as the industry standard is to collect data every hour Const C_ZOM Const C_ZOT Const C_ELF Const C_HAS ...

Страница 40: ...ogram is not modified Save the program and compile Now the new program Dynamet 5SiteA cr1 is ready to send to logger Example 1 Dynamet 5 weather station is setup at a site that is only 50ft above the sea level The system is installed on top of a tower whose height is 20m Roughness parameter of the location of the installation is found to be 0 001m and the specific air heat capacity is 1002 0 J KgC...

Страница 41: ... installed on top of a tower whose height is 5m Roughness parameter of the location of the installation is found to be 0 004m and the specific air heat capacity is 1002 0 J KgC The station is located in a research site and the project requires sensor data to be read every 5 seconds and store to logger every one minute Modify the program Dynamet 5 cr1 and send to logger so that the Dynamet 5 statio...

Страница 42: ...N 5 INT_STORE 1 C_ZOM 5 C_ZOT 0 004 C_ELF 200 C_HAS 1002 0 Enter these values in program as shown below Save the program as a different name Dynamet 5Ex2 Cr1 Compile the program In CRBasic editor and the program is ready for sending to logger for data collection and ET computation with the revised parameters ...

Страница 43: ... step EZSetup wizard that will guide through adding stations and connecting to logger If the station is already added in the list proceed with connect to logger in section 5 2 2 EzSetup wizard is shown in the screen to the left Click Next to start the wizard and complete setup process Select the data logger as CR1000 assign Dynamet 5 as the Name of the data logger and enter the following settings ...

Страница 44: ...ation Dynamet 5 1 to the station list for connection and data retrieval in future 5 If Test Communication is selected in the previous window PC400 software tries to connect to the specified logger on the COM port assigned in the setup wizard If the Communication test is unsuccessful software responds with Communication test Failed message and reverts back to the communication test window At this p...

Страница 45: ...later time 9 Click Next to complete the wizard and then Finish to close the Ezsetup wizard and revert back to PC400 main window as shown below Choose stay connected to keep the communication and close the Ezsetup wizard Notice that a new station Dynamet 5 is added in the station list along with the station parameters entered while in the setup wizard 10 In the PC400 Setup Connect Tab notice Discon...

Страница 46: ...ticular station To change or edit a station s settings simply click Edit button while the station is selected To connect to a logger for setting up program or data retrieval simply select the station name and click on Connect button If the connection is successful Connect button changes to Disconnect and Connection time is displayed at the bottom right corner indicating software is currently conne...

Страница 47: ...al it will take that amount of time to see a new reading You may want to temporarily select a smaller interval or use maintenance program to test the operation And then download the program with required long term averaging interval later Any unwanted signals in Monitor window can be removed simply by selecting the cell and click Delete button 2 Once in the Add menu to select a range of values sel...

Страница 48: ...le clicking on the table name or by clicking on Change the Table s output file command button while the required table is selected Notice that the output files can be assigned csv dat prn etc and corresponding file formats We recommend using a csv format such that the downloaded data files can be viewed easily using any spreadsheet application such as Excel 3 Select what to collect options choose ...

Страница 49: ...ax Inc 48 PC400 supports only manual data collection For applications using network communication options automatic data retrieval and schedule choose advanced data logger support software such as LoggerNet ...

Страница 50: ...rmat View data feature is explained in chapter 6 and PC400 manual 5 5 2 SHORT CUT SCWIN Short Cut for Windows SCWIN is an application for generating programs for Campbell Scientifics data loggers and pre configured weather stations SCWIN guides you through four steps to program a data logger to measure your sensors and select the data to be stored in the data logger s final storage Once a program ...

Страница 51: ...and further analysis if any 6 1 File Format As explained in the previous chapter section Data Collection the Dynamet 5 data files can be saved with the csv dat txt prn extensions Comma separated file format is the recommended file format as it allows the files to be viewed using any of the spreadsheet applications such as Excel Following table shows some of the key differences among the file forma...

Страница 52: ...Temperature Soil Temperature if available Solar radiation Global sensor Wind speed Wind direction and Rain gauge Raw data Table format Time Stamp Record Jday HHMM TCAir_C RH_Pcent SR_KWpm2 WS_mps Wdir_Deg WS_mps_WVc 1 WS_mps_WVc 2 WS_mps_WVc 3 RG_mm TCSoil_C Batt_V Ptemp_C of CR1000 logger Out Table file contains raw sensors values averaged over the storage interval and calculated Dew Point in deg...

Страница 53: ... Format Time Stamp Record Jday ETP_Total Surface Temperature Average Surface Temperature Maximum Sufrace Temperature Minumum DewPoint_C Average DewPoint_C Maximum DewPoint_C Minimum TCAir_C Average TCAir_C Maximum TCAir_C Minimum RH_Pcent Maximum RH_Pcent Minimum SR_KWpm2 total WS_mps Maximum WS_mps Minimum RG_mm Total DewPoint_C TCSoil_C Average TCSoil _C Maximum TCSoil _C Minimum BattV Minimum P...

Страница 54: ... Click on the VIEW button on the PC400 main toolbar to launch VIEW utility 1 Click on File Menu and browse down to Dynamet 5_OutTable csv 2 Now the output table is displayed in the VIEW window in csv format Click on View Menu and then Expand tabs to see the data in the column format shown below Format of the data was discussed earlier Column header shows the variable name associated with the value...

Страница 55: ...radiation in Red To select multiple columns click on the second column with mouse while holding down the shift key Once the required columns are selected click on the tool bar button show graph 2Y axes to display the chart of the selected data 4 Similarly VIEW tool can be used to view data from other data files raw and daily average tables ...

Страница 56: ...and open the file using open wizard and csv format Figure below shows the Output table file Dynamet 5_OutTable csv as displayed in excel window 2 In excel it is much simpler to plot required columns and there is no limitation on the number of columns that can be displayed in a chart Ideally all the variables saved in the OutTable can be displayed in the same chart using multiple axes option Select...

Страница 57: ... 200 300 400 500 600 700 6 29 2006 8 08 6 29 2006 8 38 6 29 2006 9 08 6 29 2006 9 38 0 0 05 0 1 0 15 0 2 0 25 0 3 0 35 0 4 0 45 0 5 CR1000 i_hgr OutTable o_ETP 3 Plots for other variables can be plotted in the same manner ...

Страница 58: ... is supplied with Flow32 and can be extended up to 200 without loosing any signal If a longer cable is required contact Dynamax For distances longer than 200 it is recommended to use either a short haul modem or RF interface Radio modem for wireless communications up to 40Miles 64KM at baud rate 9600bps Baud speed is programmable LoggerNet software is equipped with capability to program and config...

Страница 59: ...erent modes For details on short haul modem refer to SHM manual Landline Phone modem DNX9600 Data modem Land line dialup modem Where telephone service is available DNX9600 is factory set to 9600 bps but can be changed using DIP switch settings or programming software Cellular Modem GSM GSM is a Dual band cellular modem for serial communications using GSM mode As GSM is widely acceptable and provid...

Страница 60: ...miles LOS This chapter describes installation of RFMX modems along with hardware required power supplies network topologies etc Also is included a list of compatible hardware for use with RF modems such as Surge protectors high gain Antennas omni directional antennas coaxial cables and connectors adapters etc Refer to the list of hardware required for entire list 2 RFMX Modems Antenna A0 0 0 Seria...

Страница 61: ...ivity 110dBm Power Supply voltage 7 18 VDC Transmit current 200mA Receive current 7mA Power down current 1mA Physical properties Enclosure size 2 75 x 5 50 x 1 124 Weight 7 1 oz 200g Operating temperature 40o to 85o C Certifications FCC Part 15 247 Industry Canada 7 1 2 List of Hardware Radio Surge Protector cables Length LMR400 N M RPSMA M coax 3 RPSMA M RPSMA F 3 RPSMA M RPSMA F 10 RPSMA M RPSMA...

Страница 62: ... manual for detailed programming and communication protocol 7 1 4 Antenna Tower Line of sight between host and remote modem is essential to get maximum signal strength and maximum transmission range This distance can be improved by using mounting antenna on a high tower such that common obstructions like trees buildings are not causing an obstruction in to interface between the two points An examp...

Страница 63: ...g surges Make sure to earth ground the surge protector 7 1 6 Remote Station Installation Hardware setup for remote Dynamet 5 weather station Logger is shown in figure below Program RF modem from LoggerNet PC208w software before connecting to remote station Tower A0 0 0 Serial data cable RFMX Remote Modem Surge Protector DSX N Female N Female RPSMA N cable 3 long N N coaxial cable 3 long LMR 400 Lo...

Страница 64: ...s possible to use a repeater tower along with a omni directional antenna as shown in the figure below This is simple store and forward method of repeater configuration This configuration uses a loop back adapter supplied with RF modem The repeater will buffer incoming data and retransmit it when there is a break in data reception RFMX Repeater Modem ...

Страница 65: ...mmunication can be established using PC400 or LoggerNet In terms of functionality Loggernet is same as PC208w or PC400 but Logger net has some advanced features Follow the screen captures to setup GSM modem communication to Dynamet 5 CR10x logger base modem modem connected to the PC software Conexant HCF 56K modem is not in the modem pick list Select Rockwell HCF 56K modem instead ...

Страница 66: ...Dynamet 5 65 Enter data number corresponding to the remote modem Phone modem GSM cellular modem ...

Страница 67: ...66 Connecting to the Logger 1 Click on Connect tool bar to open Connect to datalogger window 2 Select CR10x station with GSM modem 3 Click on connect button to start dialing out to GSM modem and datalogger network ...

Страница 68: ... where only software handshake is applicable SHM Non Powered RS 232 Line Driver Communication modes Full duplex simplex switch selectable Loop back Features No External Power Required DCE DTE Switch Selectable Long Distance Transfer Via Economical TP Cable Compact Size 7 3 1 Specifications Function Specification Connectors RS 232 DB 25 Female RJ 11 Jack 4 Screw Terminal Switches SW1 DCE DTE Loop B...

Страница 69: ...onnector on each modem Connect host modem to COM port on PC and remote modem to Communication cable on Flow32 Logger No power connections are required Turn power ON to Flow32 Logger and Launch Flow32 Logger software on PC Refer to Section 9 1 an 9 2 for software setup using LoggerNet PC208W 7 3 3 Troubleshooting If experiencing difficulty getting communication using serial interface Check whether ...

Страница 70: ...communicate with Logger but would require manual configuration specific to the communication device 7 4 1 Modes of Configuration Point to point is a simple configuration in which two devices located at two different places are interfaces to communicate with each other by using cable modem etc Simple point to point configuration between Dynamet 5 and COM1 on PC is shown in figure below Cable interf...

Страница 71: ...different COM port Once hardware cabling and connections are setup the setup is ready to monitor anytime Communication interface in this network can be substituted with any of the available types as long as there is only one Logger station setup on each COM port Only one station may be connected at any give time Multi station Scheduling Logger 0 Logger 1 Logger 2 ...

Страница 72: ...Dynamet 5 71 Logger 4 Logger 3 Logger 2 Logger 1 ...

Страница 73: ...n RF host modem B1 on Com3 can be programmed using Logger Net to connect with either CR10X_B11 or CR10X_B12 at any given time CR10X_com1 are connected to COM1 respectively using standard serial RS232 data cable Distance in this case is limited to 200 CR10X_A00 CR10X_A01 CR10X_A02 and CR10X_A03 are connected to RF Host modem A0 on COM1 via RF communication interface using modems on each remote stat...

Страница 74: ...Dynamet 5 73 ...

Страница 75: ...Dynamax Inc 74 ...

Страница 76: ...hgr Hourly average solar radiation W m2 hta Hourly average of air temperature degC hrh Hourly average or relative humidity hws Hourly average of wind speed M s hts Hourly average of soil temperature DegC Calculated variables Notation Description Units had Air Density Kg m3 hum Ambient Humidity Kg m3 ras Aerodynamic resistance S m skl Sky long wave radiation W m2 htc Surface temperature DegC rnt Ne...

Страница 77: ...241 0 70 0 2 273 8 67 5 1 0 1 0 16 0 ln 16 0 ln 2 273 323 1 2 1013 1548 1 lg hta hdp hdp e hum hta E skl hws when hws zot zom ras or hws zot zom ras hdp e hum abp had n calculatio ET for orithm a RCM htc hta has had ras lev ras hum htc e ras hta has had htc hta skl htc E hgr root htc htc htc htc 2 273 16 303 2 273 323 1 2 273 16 303 2 273 8 67 5 80 0 237 269 17 4 10 3600 2 273 16 303 2 273 8 67 5 ...

Страница 78: ...balance of the Earth s surface English translation N A Stepanova Office of Technical Services PB 131692 US Department of commerce Washington D C 1958 259 pp o Murray F W On the Computation of Saturation Vapor Pressure Journal of Applied Meteorology February 1967 volume 6 o Lascano R J 2000 A general system used to measure and calculate daily crop water use Agronomy Journal 1992 821 832 o Penman H ...

Страница 79: ...Dynamax Inc 78 Appendix C SENSOR SPECIFICATIONS ...

Страница 80: ...ion The purpose is to compute the potential evapotranspiration from short grass ETP in mm per hour on an hourly basis A daily total in mm is also computed The algorithms are based on the method originally proposed by Penman but with several modifications by Dr C H M Van Bavel that updated the procedure Whereas the original method was designed to give only daily totals from average daily weather da...

Страница 81: ...racy 0 3 C 20 C Resolution 0 1 Units of measure C F K Relative Humidity Range 0 100 Accuracy 2 20 C 10 90 RH Resolution 1 Units of measure Rh g m3 g Kg Dew Point Range 40 C to 70 C Resolution 0 1 C Units of measure C F K Accuracy 0 3 C 20 C Rain Gage Sensor Type Tipping bucket with magnetic reed switch Housing Material Anodized aluminum Resolution 1 tip Volume per Tip 4 73 ml tip 0 16 fl oz tip Ra...

Страница 82: ...dity g m3 Air density kg m3 Wind speed m s km hr mph kts ft min Wind direction Wind chill C F K True apparent wind Outputs RS232 422 485 ASCII SDI 12 NMEA MODBUS Analogue option Temperature humidity pressure DPNCJOFE JOTUSVNFOU NPVOUFE JOTJEF UISFF EPVCMF MPVWFSFE OBUVSBMMZ BTQJSBUFE SBEJBUJPO TIJFMET XJUI OP NPWJOH QBSUT 5IF SFTVMUT BSF IJHI QFSGPSNBODF BDSPTT FBDI NFBTVSFNFOU PWFS MPOH QFSJPET P...

Страница 83: ...1 Accuracy 0 3 C 20 C Units C F K Sampling Rate 1 Hz ENVIRONMENTAL CONDITIONS IP Rating 66 Operational Temperature Range 40 C to 70 C EMC Standard BS EN 61326 2013 FCC CFR47 parts 15 109 CE Marking YES RoHS compliant YES Weight 0 Kg Origin UK PRESSURE Range 300 to 1100 Resolution 0 1 hPa Accuracy 0 5 hPa 25 C Sampling Rate 1 Hz Units hPa bar mmHg inHg POWER Power Supply 5 to 30 Vdc Power Nominal 1...

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