Dynamax Dynamet 5 Manuel utilisateur
DYNAMET 5
Weather Station
User Manual v. 1.1
Dynamet 5
1
Copyright 2016 Dynamax Inc
All Rights Reserved
Version 1.1
This manual refers to Lascano-Van Bavel ETP computation algorithm, implementation of the algorithm in
Dynamet 5 weather station, including PC400 data logger support software for Dynamet 5 Weather
station.
Specifications are subject to change. Dynagage is a new product for experimental purposes under
development. DYNAMAX Inc assumes no liability for customer assistance, infringements of patents or
copyrights arising from the use of this product. US Patents covering the construction of various stem flow
gauges are No 5,337,604 and 5,269,183. DYNAMAX does not warrant or represent that 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, Flow32W and Dynamax are trademarks of Dynamax Inc
Lascano-Van Bavel ET algorithm and CR200/CR1000 (Dynamet) program for the same are copyrights of
Dynamax Inc.
IBM is a registered trademark of International Business Machines
PC208W PC400 and LoggerNet are trademarks of Campbell Scientific Inc
Windows, Windows 95, Window 98, Windows NT, Windows2000, Windows Millennium, Microsoft Office,
Microsoft Excel are trademarks of Microsoft Corporation.
Updated: 5/12/2017
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Dynamet 5
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Includes documentation for Lascano-van Bavel RCM ET computation algorithm. Programs
written and algorithms verified by
Dr. Robert J. Lascano
Dr. Cornelius van 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
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Dynamet 5
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TABLE OF CONTENTS
1.0 INTRODUCTION TO DYNAMET 5...............................................................................................7
1.1 Unpacking, Bill of materials........................................................................................................8
1.1.1 Bill of materials......................................................................................................................9
1.2 Communication Options............................................................................................................10
2.0 SOFTWARE INSTALLATION......................................................................................................11
2.1 PC400 Installation......................................................................................................................12
2.1.1 Working Directory Location................................................................................................13
2.2 Lascano-VanBavel ET program for Dynamet 5 .....................................................................14
3.0 DYNAMET 5 AND SENSOR INSTALLATION...........................................................................15
3.1 List of Tools required ................................................................................................................16
3.2 Dynamet 5 and Tripod Installation..........................................................................................19
3.2.1 Tripod Installation:...............................................................................................................20
3.2.2 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 Pressure Calculation....................................................34
4.3 ET Variables and complete algorithm.....................................................................................35
4.4 CR1000 Program for Dynamet 5 and ET computation..........................................................37
4.5 Customizing the Program..........................................................................................................39
5.0 USING PC400.................................................................................................................................42
5.1 Setup, Program Logger And Communications.......................................................................42
5.2 Connect To Logger.....................................................................................................................45
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5.3 Monitor Data In Real Time.......................................................................................................46
5.4 Data Collection...........................................................................................................................47
5.5 Advanced PC400 Features ........................................................................................................49
5.5.1 View data and Graphics.......................................................................................................49
5.5.2 SHORT CUT/ SCWIN.........................................................................................................49
5.5.3 CRBasic –Program Editor...................................................................................................49
6.0 DATA FORMAT, VIEW AND GRAPHS......................................................................................50
6.1 File Format .................................................................................................................................50
6.2 Dynamet 5 Data Format............................................................................................................51
6.3 Open Data –Using “View”........................................................................................................53
6.4 Open Data –Using EXCEL.......................................................................................................55
7.0 COMMUNICATIONS ....................................................................................................................57
7.1 RF Modem (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 Configuration.......................................................................................................69
7.4.2 A sample large scale setup.......................................................................................................72
Appendix A: LASCANO-VAN BAVEL ITERATIVE ET ALGORITHM................................................75
Appendix B: REFERENCES .....................................................................................................................77
Appendix C: SENSOR SPECIFICATIONS..............................................................................................78
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1.0 INTRODUCTION TO DYNAMET 5
The Dynamet 5 weather station is completely pre-wired, and assembled in a weatherproof
enclosure, including software to read data from weather sensors. Data is collected and stored in
the data logger non-volatile memory. Up to 500,000 records (180 days) can be stored in the
data logger. A block diagram of Dynamet 5 weather station logger is shown on the following
page. Data logger and weather sensors are installed on a 6ft. (2 m) tripod with collapsible legs,
ground stakes, and slide collars for leveling. A crossbar is used for mounting the wind set,
pyranometer and leveling stand, and a 12-plate radiation shield for RH/temperature probe are
installed as shown in the figure below. Grounding rod, Lightening arrestor, and ground rod
cables are required to protect system from lightening surges. The Dynamet 5 weather station is
a specially designed automated system to record the critical weather parameters affecting the
growth and harvest yield of crops.
Each station includes software for weather data retrieval, and RCM ETP algorithm, Lascano-
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 packaged with the Dynamet 5 weather
station. 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 and Dr. Robert J. Lascano, that updated the procedure.
Dynamet 5 system Features
Portable 2 meter (6 ft) tripod,
o3 meter (10 ft) optional
Sealed enclosure
MaxiMet GMX500 Weather Station
Ultrasonic wind speed & direction
Built in ETo iterative RCM calculation
CR1000 data logger
10 Watt solar panel, mast mounted
Battery and charger circuit
Scientific grade weather sensors
500,000 data values in recorded data memory
2MB Total program and storage memory
RS-232 Interface, USB and PC 9-pin cable (3m)
Power Up Program Start
PC400 support software
Mast - Enclosure specifications
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1.1 Unpacking, Bill of materials
Using the following bill of materials, open the cartons and check off the items to see that all
material was received in good condition. Notify Dynamax no later than 10 days after receipt if
there are any discrepancies. Notify the shipper and Dynamax immediately if goods are
damaged in transit by mishandling. The white Dynamet 5 enclosure contains the CR10000
logger, voltage regulator for solar panel (some times voltage regulator may be installed 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 included in a pdf form.
Dynamet 5 data logger programs directory with the standard program, and a test program.
A directory with your custom program tuned for your weather application, to run the logger with
additional sensors, and a specific solar sensor supplied for your weather station.
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1.1.1 Bill of materials
1. CM106 –10ft Tripod with Grounding Kit
2. Mounting arm –Cross Mount
3. LI200S Pyranometer Sensor
4. LI2003s Pyranometer Leveling Base
5. Pyranometer Mounting 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”
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