Denrometer Increment Sensor DRL 26 - Alphaomega
Contents
1. responsible for the faults originated by careless manipulation incorrect operations wrong applications or theft The warranty covers the battery failure for three months only The fright to producer is paid by customer the sending back is paid by producer Appendix A EMS USB IrDA cable Ri etter eee ara The EMS USB IrDA cable serves basically as an ordinary USB RS232 converting cable with built in infrared transceiver The cable is necessary for all present notebooks which are not equipped with serial COM port The cable head has two LED diodes indicating the communication process The red one indicates the signal coming out of computer the greed LED diode traces the signal going out of datalogger Since the electronics of dataloggers is most of the time between following measurements in idle mode sleeping it has to be waked up somehow in order to be ready for communication Normally it is made by a signal from a connected cable IR transceiver of systems with IR access is activated by the above mentioned magnetic head The magnetic field switched on a reed contact located close to IR access point and the system wakes up for some time waiting for communication When the magnetic head is put on the serial connector the infrared transceiver is activated This status is detected by Mini32 software after the first communication attempt and the system use this way of data transfer until the Mini32 is closed The infrared2. data access has to be enabled in Mini32 COM port setting EMS universal software ver 4 1 16 0 1 N ol x Configuration i Data iles E Off line edit DownLoad Firmware Communication interface OM port PA com25 y RS line C GSM modem Comm Port malo Check for all ports Cable COM25 Palm di V enable IrDA with EMS USB RS cable Apply OK Cancel More Help Exit Working directory ca v Select COM port or modem 10 Appendix B Installation notes 1 Cut a piece of tape ca 25 cm longer than the stem circumference Avoid crumpling of the tape during the installation 11 2 Fold one end of the tape and put on the central pin 4 Insert the tape below the binder bar 5 Turn the head counterclockwise in order to get at least 5 mm on the scale 4 X Es 13 6 and fold the tape over the bar 14 8 Activating of the IR connection bring near but do not touch 9 The datalogger setting example AAA y PC Time 2007 04 22 23 10 50 Dev type DRL26 Periods See oo DL Time 2007 04 22 23 10 53 Dev far a gt El approx 1594 days Increment mm Tree 2345 1 5 m Temperature deg C Press F2 for channel edit Press p to see the parameters of equations Refer to Mini32 user s manual for necessary details Brno May 2007 15
3. same configuration coming from different time periods mixing files of different systems Calculation mean values of different time intervals hours days drawing selected variables in time with the possibility of easy erasing of irrelevant values export of data to text Excel or Lotus format export of graphs to bmp format drawing of depth height profiles printing of graphs basic statistical analysis regression data analysis user defined calculation non linear multi regression analysis 4 Maintenance DRL 26 unit does not need any special maintenance Avoid a shifting the senor during the operation Take advantage of IR access at this point 4 1 Battery replacement The battery replacement is easy after screwing off the datalogger lid with the electronics from the main cylindrical body A 2 5 or 3 mm small bladed screwdriver is necessary for screwing the battery terminals Please short circuit the battery terminals with a metal tool screwdriver knife door key after removing the old battery to make sure that the battery energy counter is reset After the battery replacement the system needs to be initialized see After power drop out 5 Warranty The producer warrants right function of the measuring system for three years after it is accepted by a customer All the faults will be removed free of charge during this time at the measuring device itself as well as at sensors The producer is not
4. Denrometer ncrement Sensor DRL 26 User s Manual May 2007 Content 1 General descripto viii sor kr ar KR RAKA KKR KRKA KR RR RAR KRK KRK ibe 3 2 Specifications ss ved tran dnr nn sn SARS A A FANER SE coeds Poaceae 4 3 OPP OM ss sestace bodd sanne nen ta 5 3 1 Se sorinstallatioM as aa aar a sekel tel ante ns rear 5 3 2 Infrared communication inscrit a KR RA RR AAA 5 3 2 1 Staft operatio AAA aA Ea 5 SGT BASTE SCCUNG rain 5 3 21 2 Advanced settindg ossia dde 5 3 2 1 3 After power drops OU 6 3 2 2 Memory Capacitan iia 6 3 3 Data POCOS A A AA 6 4 Maitena ina IO ries 7 4 1 Battery teplacomentis cts 7 5 NETAS 7 Appendix Arts ria 9 Appendix B 1 General description DRL 26 is designed for long term registration of tree trunk circumference via stainless tape that encircles the tree trunk Its length variations are measured with a rotary position sensor and stored into the datalogger memory in regular time periods Also the internal temperature of the electronic part of the sensor is measured and it can be stored into the memory too The sensor is fixed to the trunk just by the strength of the tape no sharp or invasive fixing parts are used The sensor is made from UV resistant plastic metal parts are made from stainless steel or anodized aluminum The internal space for the electronics is water sealed The sensor is powered with a Lithium ion battery for up to five years of continuous measurement The communicat
5. hrs averaging storing interval 10 min to 24 hrs internal clock accuracy 10 to 40 1 min per month input voltage resolution 16 bit Battery lifetime Lithium LS14250CN 3 6 V 1000 mAh storage time idle run logging stopped ca 5 5 years when measured every 1 hr ca 5 year when measured every 10 minutes 3 years Size 100 x 70 x 100 mm Weight incl battery ca 300 g 3 Operation 3 1 Sensor installation The unit is fixed to the tree trunk with the 12 mm wide stainless tape The tape is cut from the spool containing 15 m of tape by a light snips Tape length should exceed the trunk circumference for 25 cm The installation procedure is shown in Appendix B Datalogger has no power switch It is running after switching on the data logging by software The system configuration is made from the PC running the Mini32 software by an infrared connection 3 2 Infrared communication The infrared connection and must be activated just before or after the first pushing Download Data or Configuration button in the Mini32 main screen Than the IR connection is maintained until the program is closed or the connection is lost when the IR beam is canceled for more that 15 seconds by an obstacle or by too long distance between the transmitter and sensor The connection is established by putting the EMS USB IrDA unit magnetic head near the sensor IR transmitter The right position is marked with IrDA label with a label o
6. ion with PC is based on infrared transmission however a special USB IrDA adaptor is necessary for that see Appendix A The datalogger memory stores up to 60 000 measured values what means more than three years of both increment and temperature values stored in hourly intervals Both time intervals of measurement and storing to memory are generally different so one value can represent the average of more readings The memory is non volatile type so the measured data are safely stored even in case of full battery discharge of battery damage There are two memory operating modes i the oldest data are overwritten with the actual ones or ii the logger stops operation when the memory is full Datalogger is supported with fancy graphical software for data viewing pre processing and export to common file formats text Excel The software contains also advanced statistic module intended for processing of long time data series user define calculation and other options available for all EMS products 2 Specifications Increment sensors type rotary position Range 64 mm of circumference Linearity 2 of full scale Resolution 1 um Tape strength 15 to 20 N in the whole range Operating range temperature 30 to 60 C humidity 0 to 100 Temperature sensor accuracy 2 deg C Datalogging unit memory capacity 50 000 values typically measuring interval 10 min to 24
7. n the cylindrical sensor body The distance between the magnetic head and the unit necessary to start connection should be a few centimeters only see Appendix B The typical working distance between sensor and transmitter is 60 cm within a 45 deflection in all directions from the optical axis Optical axis of IR transmitter crosses upright the axis of sensor ca 1 cm above the IrDA label 3 2 1 Start operation 3 2 1 1 Basic setting Run Mini32 software which is a part of delivery Push Configuration button and activate IR connection by magnetic head Set both interval of measurement and two character device code Double click on a channel line opens a channel setting window Set channel on and add a description Left mouse click on ON OFF button activates deactivates data logging Press Put button in order to send the configuration to the datalogger 3 2 1 2 Advanced setting Push More button in Configuration window in order to approach advanced setting screen This option enables Datalogger reset initialization Initialize resets all system variables to default values changes datalogger time and password erases the data from memory and sets the memory operation mode see General description System calls for initializing automatically always when the supply voltage has dropped bellow 2 9 Volts i e after battery replacement or after its total discharge In such a case is the user asked for initializi
8. ng by each communication attempt Warning save data always before initializing they are lost afterwards Memory erase RAM clear should be done when the memory is full and the data overwriting is disabled and also when the data continuity is senseless or misleading when the sensor in moved to different location for instance Make sure the data were successfully saved before memory erasing Hardcopy of memory HCM The whole memory content will be saved to file Use it in case of problem with data conversion after downloading which could be caused by damaged data structure due to external factors Send the file to producer for free encoding Password A four character string can be introduced Password disables unauthorized changes of configuration 3 2 1 3 After power drop out It is necessary to initialize the datalogger always when the battery voltage drops bellow 2 9 Volt This comes usually after the battery replacement or after ts removing See Advanced setting Note The battery status is continuously calculated since the last low voltage occurrence which normally indicates the battery replacement according the time of operation measurement communication with PC data download Naturally the full capacity of the new battery is supposed Therefore the battery duration will be overestimated in case of using a used one or very old battery See also Battery replacement 3 2 2 Memory capacity Maximum numbe
9. r of days of the measurement stored in memory can be easy estimated according to formula N 50000 n k where n number of averaged values within a day k number of channels in use Example Stem increment and temperature values stored in memory each hour fill up the memory after 2 9 years 3 3 Data processing EMS Mini32 universal software supports also the data handling and processing Data download and saving process is activated after pushing Download button All data from memory are saved in the file XY 2005 04 28 hex where XY is device code see Base setting and 2005_04_28 is computer date YMD These hex file contains the stored data and complete configuration information including the last battery voltage datalogger time in a compressed format suitable for fast transfer to computer Since this format is not usable for next data processing the file is subsequently converted to another format dcv XY 2005 04 28 dcv This file contains the same information as hex one it is typically four time larger but suitable for fast processing as file mixing and chaining time averaging drawing editing statistical processing etc In case of accidental wrong data processing in dcv file it is easy to create the dcv file again after opening the original hex file Therefore please save the original hex files for archive purposes Mini32 software allows a wide range of data operation mainly connection files of the
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