TRIME®-IPH
Contents
1. 16 Material Specific Calibration 18 Connectors Mounting mr M M 18 10 186 M i 19 11 M Tm 20 12 Information on Lightning Protection of the ENVIS Environmental Measurement System IMP232 Micronet Bus Logger and integrated nsns aa rne nnns 20 FIBILOGUCUDET secet scope ud ea od silted vent 20 12 2 Excess voltage protection on 110 220V mains supply 20 12 3 Protection of modem and telephone 20 12 4 Excess voltage protection for network modules by 20 12 5 Lightning protection on meteorological towers 20 12 6 Installation instructions for SM BLITZ lightning protection modules 21 I2 CONCUSSION curenti PT c 21 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual_e doc 3 IMKO 1 Functional Description The intelligent and compact TRIME IPH sensor is a measurement devices for continuous and non destructive determination of volumetric soil moisture It i2. access tubes 2 3 Measuring experiences The new TRIME technique was thoroughly tested in the field and compared both to neutron probe measurements and thermo gravimetrically determined values Gravim Water Content Vol 96 0 10 20 30 40 50 TRIME Water Content Vol Figure 3 Comparison of TRIME measurements and gravimetric water content determination for a clayey soil Figures 5 and 6 show a comparison of water content determinations for a loess and for a heavy clay made with a neutron probe Wallingford the TRIME T3 probe and the gravimetric method In con trast to the neutron probe which is not suitable for measurements near the surface due to radiation losses to the atmosphere TRIME has no problem at all to measure directly at the soil surface 8 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc IMKO Water Content Vol Neutron probe TRIME probe c Gravimetric Figure 4 Comparison of neutron probe TRIME T3 and gravimetric method for water content determina tions in a loess soll Water Content Vol 10 20 30 40 50 60 depth cm Figure 5 Comparison of neutron probe and TRIME T3 for water content determinations an illitic clay Some materials especially very clayey soils and soils with high organic contents can afford material specific calibrations due to their different dielectric behaviour A limiting factor in TDR measuring is the bulk soil electrical conductivity
3. 2 Analogue output for analogue data logger TRIME IPH sensors can easily be connected to conventional analogue data loggers with differential input The maximum apparent ohmic resistance for the analogue output 0 4 20mA is Without error code 800 per m cable 2 0 34mm less 0 11189 With error code 280 per m cable Z 0 34mmz4 less 0 111802 Depending on application and energy supply it can be chosen between two operation modes B and C operation mode B single measurement after power on The measured value is available until power off operation mode C cyclic measurement with permanent power supply The measurement rate is adjust able The operation modes are set at works Re configuration by use of software TRIMESET possible 1 2 2 1 Single measurement operation mode D Enables low power consumption in field installations TRIME IPH is started by the data logger relay The measurement takes 10 15s and consumes 200mA After the measurement the power supply switches off The measurement value is available at the analogue output and is stored in the TRIME sensor until the next measurement is started by the data logger relay 4 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc IMKO In case a voltage drop occurs when several TRIME sensors measure simultaneously the probe num bers please note probe number Z serial number can be set in series and thus a serial retarded measurement start can be force
4. 5 6 ale T 2 1 MTOAUCUO ec a EE EE E E EEE A A 7 2 2 Measunng Field e cr E anata T 2 3 Measulllig exbDereries sued ol ae Lu iuro ta AC 8 2 4 SUL y di ME MeL M e LM D M M DM EL MEE 9 ACCESS TUDES ANG 1 le TET T Pr O nee 10 4 Instructions for Access Tube Installation 11 4 1 Inserting and Fixing the Rubber 11 4 2 Inserting into the TECANAT Tube ssssssssssssseeeen nennen enne nnn nnne nnns 13 5 Attention with the B3M B3L Borehole 14 6 Distant Power Supply of TRIME Sensors ccccccecccesceceeececeecececeeaeeeeseeeeseeceseecessaeessueceseueessueesseseesanees 15 Basic Alignment with the Calibration Set x i eee ee eee aed 16 7 1 Whati etes eet 16 7 2 What are the benefits of the calibration set for the 16 7 3 Howto make the basic alightrenit ues ten Comunes cen posee dak 16 7 3 1 Preparation of the glass Deatds 30e 16 7 3 2 Basic alignment
5. be installed at the beginning and at the end of a circuit in order to protect the electronics from excess voltage Attention SM Blitz modules have a protected and an unprotected side The SM BLITZ lightning protection module has to be grounded using a ground conductor with a wire cross section of at least 6 mm screwed to the long side of the module A grounding rod length 2 me ter may serve as ground conductor Grounding is optimal when the grounding rod is in direct contact with ground water 12 7 Conclusion Only a limited protection against excess voltage is possible when it comes to natural phenomenon such as lightning stroke Direct lightning strokes may cause damage nevertheless If you have any questions regarding lightning protection do not hesitate to contact us 21 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc
6. used download unter www imko de For establishing a material specific calibration a test series with reference values is necessary z B Oven drying at 105 C until constant weight The test series and consequently the calibration should include minimum and maximum moisture values TRIME readings and reference values are compared in a table Then the calibration coefficients must be calculated and uploaded to the TRIME device 9 Connector s Mounting The water tightness of connectors IP67 30min 1m water column can only be guaranteed by ob serving the following In case of carrying out the cabling of the distribution modules yourself please make sure that the cable seals fit tightly Only cables with a sheath diameter of 5 to 8mm shall be used With smaller diameters water may enter the connector the distribution box or the sensor Altered measurements or destroyed electronics can be the consequence IMKO supplies special seals All unused connectors have to be protected by blind covers IMKO supplies all equip ment respectively all open connecting terminals protected by blind covers Additional ones can be obtained at IMKO When installing the connectors special attention has to be paid to the connectors being threaded with care The threads have to be aligned correctly to ensure efficient tight ness In addition the connector should only be hand screwed i e without use of tools e g pliers 1 8 I PUBLIK TECH_
7. waterproof sealed PVC IP68 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc IMKO 2 The TRIME T3 Tube Access Probe 2 1 Introduction The measuring of soil water content with Time Domain Reflectometry is now a well established me thod However water content profiling is not possible with conventional TDR rod probes The TRIME tube probe was developed for this reason Since 1994 the TRIME T3 has found numerous applications in earth and environmental sciences fulfilling even the most exacting requirements 2 2 Measuring Field The effective penetration depth of the probe is about 15 cm with the highest sensitivity in the immedi ate vicinity of the access tube and decreases exponentially with distance Figure 3 shows the electric field distribution of the probe and the approximate measuring volume ipotential lines Y aluminum plates effective measurement volume Q L x Figure 1 Electric field distribution of the TRIME probe and approximate measuring volume The elliptical measuring volume enables a higher representation to be achieved by several measure ments rotating the probe after each measurement and calculating the mean value The following experiment illustrates the high penetration depth of the measuring field In a bucket of 50 cm diameter filled with water saturated glass beads a moisture of 44 vol is meas ured Measuring in a smaller bucket see
8. Fig 3 would result in essentially lower measuring values due to an amount of air within the measured volume saturated glass beads with water content of 40 by vol smaller bucket reducing the measurement field lastic bucket Figure 2 Influence of a too small measuring volume on water content determination I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc T IMKO Note that the necessity of a close contact between access tube and material is vital for reliable meas urements and that the tubes should be installed by our recommended method e For example at an assumed water content of 15 vol an air gap of 1 mm around the whole length of the tube would result an underestimation of 1 2 vol 9o e Ata water content of 25 vol the error would be 5 vol e At very high water contents 50 vol 96 errors may reach 10 vol 96 e n the case of a water filled gap under conditions of saturation the gap error would be much smaller Problems may arise however in very inhomogeneous soils and when drilling under very dry condi tions For these soils other drilling methods are recommended e g pre boring with an Edelman auger washing mud into the cavity around the tube Losses in accuracy must then be accepted and measurements immediately after installation are not recommended Problems can also arise in swelling and shrinking soils since cracks develop especially along the
9. For the TRIME T3 tube probe bulk soil electrical conductivity should not exceed 1 dS m Note that bulk soil electrical conduc tivity is a combination of the pore water electrical conductivity and the surface conductivity of the soil matrix Due to the tortuous nature of the conductivity path in the soil soil type dependent the bulk soil conductivity is much lower than the electrical conductivity of the pore water and it is dependent on water content 2 4 Summary The TRIME tube probe is a promising new tool for determining water content profiles with the TDR method Fast routine and non destructive measurements of water content without the use of hazard ous radioactive materials are possible A measuring accuracy of 2 vol is possible provided that soil and access tube are in close contact and bulk soil electrical conductivity doesn t exceed 1 dS m I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc 9 IMKO 3 Access Tubes Augers The penetration depth of the measurement field of the 44mm TRIME tube access probe is up to 150mm into the soil The measurement sensitivity is the highest near the access tube and decreases exponentially into the medium Therefore the insertion method of the access tube is very important Small version meum without soil anchors for access tubes Pre boring Fixing rd with 1m length with an of the Ramming head lt M Edelman rubber with clamp device pue auger
10. MAN TRIME IPH ENGLISH TRIME IPH manual e doc IMKO MICROMODULTECHH Connector s Assembly In diesem Bereich Buchseneinsatz Gewindering coupling ring einfetten female insert In this area place a thin coat of grease F H lse mit Feder Shell with spring tms tnm i i Dichtring gasket i uon Druckring Druckschraube at thrust coilar pressing screw yo aii i TE 77 j Dichtring i gasket d t Dichtring e Druckring _ i thrust coilar gasket a N Druckschraube un pressing screw a w v Bs An den schwarz markierten Bereichen den Siliconkleber so dick auftragen da Dichtring und Kabel wasserdicht verklebt sind At the black marked areas i i apply silicon glue so thick O Ring i that the gasket and the Gewindering coupling ring cable are sticked together and are waterproofed 1 t 19 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual_e doc IMKO 11 EMV EMI Precaution EMV EMI precaution by means of ferrite filters ensures better disturbance suppression and therefore improves measurement accuracy Ferrite filters are integrated in the TRIME sensor and at the connec tor side of the sensor cable 12 Information on Lightning Protection of the ENVIS Environmental Measurement System IMP232 Micronet Bus Logger and integrated
11. Sensors 12 1 Introduction Lightning strokes can cause considerable and costly damages to unprotected electronics The equip ment is often totally destroyed A good number of users are not or only partially insured Customers who have lightning protection insurance must comply with defined clauses regarding lightning and excess voltage Insurances only cover the damage when the defined clauses have been complied demonstrably IMKO strongly recommends adequate lightning excess voltage protection equipment for ENVIS environmental measurement systems 12 2 Excess voltage protection on 110 220V mains supply Lightning strokes in proximity to high voltage transmission lines can cause excess voltage in the mains power supply which may result in damage of electronic components Environmental measure ment systems with 110 220V mains supply are endangered by this excess voltage It may affect the whole system through the power supply unit and the central station SM MUXA or SM 23U Excess voltage can even enter the measuring system through the data acquisition computer s mains power supply An excess voltage protection is highly recommended for all 110 220V devices connected to the ENVIS system 12 3 Protection of modem and telephone lines Telephone lines are endangered by excess voltage If a modem is connected to the measurement system the telephone line should also be protected by a lightning protection module 12 4 Excess voltage protection f
12. TRIME IPH User manual nove Hr alm Innovation Award of the State of Baden Wurttembe P Dr Rudoll Eberte Preis IMKO MICROMODULTECHNIK GMBH IMKO Thank you for buying IMKO Should you have any queries please don t hesitate to contact your local distributor or address directly to IMKO IMKO Micromodultechnik GmbH Im Stoeck 2 D 76275 Ettlingen Germany Phone 49 7243 5921 0 Fax 49 7243 90856 e mail info imko de internet http www imko de 2 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc Table of contents as of January 1st 2005 1 PiU GOMeLICSCH DUO E TS 4 1 1 TRIME HD and TRIME Data Pilot operation iii eoru Susa See eua 4 1 2 Data Ogger OPGrallOn 4 1 2 1 IMP232 Micronet output for use with the TRIME Logger ENVISLog operation mode A 4 1 2 2 Analogue output for analogue data 4 1 2 3 PU COMMECIOM RR 5 1 3 EXTel Nal DOWER SUDDIN e 5 1 4 ETTOL COCOS eens avis 5 1 5 TSS Dala csan TER 5 1 5 1 The RS232 power supply tinet edic i wae inde 5 129 2 xig eliam P 6 1 5 3 SSO dala EN 6 2
13. ads The glass beads which are supplied with the calibration set have to be prepared first Fill up one bucket until the rods of the probe can be inserted completely To achieve a constant density knock the bucket several times against the ground d The density of the glass beads increases with frequent insertion of probes Therefore the glass beads should be poured out into another bucket and poured back to achieve the original density Now the second bucket has to be filled with water in order to be able to fill in the glass beads without air bubbles remaining An additional precaution to remove air bubbles is to stir slightly while filling in the glass beads The container must now be knocked against the ground several times to achieve a constant density The surplus water must be poured out until the thickness of the water film above the glass beads is below 2mm The water saturated glass beads should be in a temperature range between 20 and 25 d Attention Water dissolves Na O and K2O from glass which causes a rising pH value and an in creased electrical conductivity New glass beads have to be washed intensively with tap water 1 Fill a bucket with water 2 Stir the beads under water 3 pour out the water This procedure should be done with new glass beads at least five times each time with fresh water If the glass beads have been in use for a longer time three times is sufficient Please note that the electrical conduct
14. bung pem 5 AN S e gt TECANAT E I4 Pd Auger access aa am A equipment for tube the direct setting of the access tubes into X homogeneous Support soils pillar with clamp device Internal S es steel guide ET and e o protection gt tube e 3S A b z 2 Steel cutting shoe i gt o of access tube Pre boring of bore holes with standard augers destroy the soil texture because it is difficult to come to a good and close contact of the access tube inside the soil With the described auger equipment it is possible to set the access tubes directly into homogenous soils without pre boring In very stony soils it is not possible to use this method Therefore it could be possible to use an Edelman Auger for pre boring and closing the air gaps with mud Changes in soil structure and a delay time up to 4 weeks before it is possible to come to precise measurement values must then be accepted The IMKO auger equipment consists of access tube support pillar with three soil anchors ramming head with clamp device screw auger with handle clamp device for the rubber bung and an internal steel guide protection tube Deliverable is a small version without soil anchors for setting of glass fibre tubes with 1m length A steel cutting shoe is glued into the access tube The screw auger that moves easily within the guide tube is used to drill out soil to about 0 1m below the cutting shoe De
15. d Then TRIME sensor number 1 measures immediately after power on number 2 measures 20s retarded number 3 measures 40s retarded etc The probe number can be configured using SMCAL or SMTOOLS 122 2 Cyclic measurement operation mode C Operation mode C requires mains supply TRIME IPH enable automatic interval measurement in stand by modus Measurement rates between 10 and 3600s can be configured via PC RS232 software TRIMESET The measurement takes 10 15s and consumes 200 mA During stand by 8 10 mA are consumed The measurement value is available and stored in the TRIME sensor until the next measurement starts 1 2 3 PC connection via RS232 The TRIME IPH can be connected to a PC via the RS232 connector and the appropriate cable in order to carry out datalogging changing the operating mode or calibration 1 3 External power supply Within the IMP232 Micronet the energy supply of sensors can be ensured by battery solar cells or mains supply For serial connection of a great number of sensors or long IMP232 bus cables a power amplifier module SM 23LV or decentralised power supply is advisable 1 4 Error codes Only valid with the IMP232 Micronet In case of failure an Error No and an Error Address is given out TDR may be defective TDR electronic or probe cable defective 31 TDR level not found TDR level searching lasted too long may occur with bad signal quality due to conductive soil or material Salinity too hig
16. esignated to measure Thus n 1 034mm 12V 7V _ max 2 0 0080 7 1 0 20A n I 160m In the above calculation no tolerance is included for security reasons the calculated cable length should be reduced by 10 to obtain a realistic value In order to increase the maximum possible cable length several solutions are feasible 1 Using cables with larger conductor diameters by using 6 core conductor cables instead of 4 core the cable length can be doubled as two extra cores can be used for power supply cables with conductors having larger di ameters will increase even further the maximum possible cable length 2 Increasing the power supply voltage power supply voltage can be increased up to 17V Thus the maximum length will in crease from 160 m to 320 m in the example calculation above 3 Installation of buffer batteries in the distributor additional storage batteries close to the TRIME sensors e g in the distributor allow ca ble lengths up to 1km and enable simultaneous measurement of several sensors How ever this method requires an additional charging circuit for the buffer storage battery 4 Installation of a voltage regulator at the distributor voltage loss in the cable can be reduced with a 30V power supply and an installation of a voltage regulator directly in front of the TRIME sensor thus allowing circuit lengths of up to 1km Which solution is suiting best mainly depends on the nature of power supply o
17. f the measurement sys tem battery supply solution 1 and possibly solution 3 should be considered the latter be ing relatively expensive mains supply solutions 1 and 2 could be combined or more expensive solutions 2 or 4 could be chosen IMKO 7 Basic Alignment with the Calibration Set 7 1 What is a basic alignment The basic alignment serves to compensate the cable length and tolerances of the probe me chanics thickness of the rod coating rod length etc After two measurements one in dry and one in water saturated glass beads the calibration data is calculated and stored in the TRIME sensor Every TRIME IPH sensor must be calibrated before it can supply proper measurement results The basic alignment is carried out by IMKO at works before shipment 7 2 What are the benefits of the calibration set for the user With the calibration set you can easily carry out the basic alignment with your TRIME sensor yourself If defective probe rods must be changed you are able to make the required basic alignment by yourself The calibration set can not be used for establishing a material soil specific calibration For this purpose a measurement data set must be created on the specific material In order to calculate the calibration data for this data set and to download it to the TRIME probe the calibration pro gram TRIME WinCal is required 7 3 How to make the basic alignment 7 3 1 Preparation of the glass be
18. h Electrical conductivity of soil material too high Invalid probe data Data in probe connector not plausible or probe connector defective 1 5 Technical Data In the following technical data is given on cable connectors and the IPH sensor 1 5 1 The RS232 power supply cable 7pin male cable connector RS232 Power Supply es red connector black connector front view NC ON DB9 Connector for RS232 V24 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc 5 IMKO 1 5 2 Pin assignment 1 7 Connector TRIME IPH Connector power supply Version IMP Bus RS232 V24 colours analogue output Pin 1 U power supply green Pin 2 IMP232 network red Pin 3 OV power supply pink brown Pin 4 COM IMP232 network blue front view Version analogue output and RS232 V24 interface colours Pin 1 0 green Pin 2 RxD yellow Pin 3 OV pink Pin 4 TxD brown Pin 5 0 1V or 0 20mA white front view Pin 6 AGND grey Pin 7 n c Via the serial interface re calibration and adjustment of parameters is done 1 5 3 Sensor data 0 60 volumetric water content Accuracy dependent on soil or material calibration re calibration is possible per free software TRIME WinCAL download under www imko de 0 2dS m T3 0 5dS m T3C material specific calibration required for clay and organic soil Cable length standard 3 5m special length on request
19. ivity of the water saturated glass beads medium increases already after a few days storage Therefore the glass beads must be washed again before the next calibration 7 3 2 Basic alignment procedure The basic alignment has to be carried out using the calibration program TRIME WinCAI Please read the information available in the help function about the basic alignment 1 6 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc a Fig TRIME IPH with T3 probe head inserted in a TECANAT calibration tube which again is installed in dry glass beads Make sure that the tube probe s wave guides are completely inserted into the glass beads when measuring The basic alignment will fail if the wave guides are in part surrounded by air I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc 1 IMKO 8 Material Specific Calibration Your TRIME measuring system is working with a universal calibration for mineral soils as standard Following parameters limit the application range of the universal calibration Clay content gt 50 Organic content gt 10 Bulk density lt 1 1kg dm or gt 1 7kg dm Exceeding the above limits may cause failures overstepping the tolerances given on page 5 Should your soil be among the above mentioned categories or if you want to go for the last digits in accuracy a material specific calibration is advised For setting up a material specific calibration the software TRIME WinCal is
20. ll well maximum 252mm for the B3M probe Attention Do not inflate air into the bore hole probe the air needs time for deflating through when the probe is outside the bore hole the air pipe The longer the air pipe the The packer rubber might be destroyed longer the deflation time Control the deflating air flow at the valve and only pull out the probe from the bore hole after complete deflation of the probe 1 4 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc 6 Distant Power Supply of TRIME Sensors The operation of TRIME sensors may cause problems when power has to be supplied via long cable lengths There are limitations regarding the maximum cable length depending on the cable diameter When power is supplied distantly the maximum cable length depends on the cable cross section A the distribution voltage Vs and the number n of the sensors measuring simultaneously Furthermore device specific data also enter the formula Power consumption during measurements l 200 mA Minimum sensor voltage at circuit end Vmn7 VM The maximum possible circuit length Imax can then be calculated in the following manner A V V nin I 2 0 0380 nl This is explained in the following example In the IMP232 environmental measurement system a bus cable with a wire cross section of 0 34 mm is normally used We further assume that the power supply voltage is V4 12 V and only one sensor is d
21. m powder on the rubber bung sides and into the access tube 12 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual_e doc IMKO MICROMODULTECHNIE 4 2 Inserting T3 into the TECANAT Tube When you are going to work with your TRIME T3 tube access probe Press the spring mounted wave guides to the probe body when you insert the T3 probe into the tube Thereby you avoid ripping off the spring mounted wave guides Depth markers see picture right are fixed along the cable in 1m steps from the measurement centre The marker ears are positioned in direction of the oriented measurement field see p 7 1m from measurement center 2m from measurement center Bly Coax Cable TRIME IPH a 2 2 X Measurement center um S 111 11 591 amp TRIME HD or TRIME Data Pilot Please note Should you use new T3 probes eight wave guiding plates instead of two in old GFK tubes we advice to carefully chamfer the inner top side of the GFK tube Thereby you avoid ripping off the spring moun ted wave guides 13 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual_e doc IMKO 5 Attention with the B3M B3L Borehole Probe air pipe cable AP N XN A B3M B3L probe is only suitable for For pulling out the probe prepare it with limited bore hole diameter a steel rope on the two hooks before maximum 2105mm for the B3L probe letting down the dri
22. n around the hole which would lead to higher meas urement values Ramming Head Fixation with Clamp Device Screw lt Pull for best position Plastic Inlet The access tube support pillar with three ground anchors avoids vibrations that would cause air gaps Then the clamp of the support pillar must be closed and the soil can be removed with Steel Cutting Shoe the screw auger When the tube reach of Access Tube the support pillar it must be removed and the access tube can be inserted to the final depth without the support pillar A plastic collar should be mounted around the tube to prevent water from running down the tube wall and a plastic cap to protect the tube against rain 4 1 Inserting and Fixing the Rubber Bung 1 Orient the rubber bung with the black rubber washer downwards 2 Insert the rubber bung into the TECANAT tube 3 Let it glide down or push to the bottom of the tube I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc 1 1 IMKO MICROMODULTECHNIE T GMBH Black washer downwards e 4 Fix the rubber bung with the screwing adaptor The rubber bung can be pushed into the access tube with the screw adapter and the handle the screw adapter can be replaced instead of the screw auger and can be fixed at the bottom of the ac cess tube with two turns of the handle If pushing down the rubber bung turns out to be difficult just apply some talcu
23. or network modules by SM Blitz Excess voltage caused by lightning strokes in close proximity to the environmental measurement test system may enter the IMP232 Micronet bus transmission lines Longer lines increase the risk of light ning stroke Theoretically maximum protection is achieved by installation of a lightning protection mod ule SM Blitz in front of each SM Module But actually reasonable compromises between costs and maximum protection level has to be found i e interconnection of adjacent SM Modules to lightning protected groups 12 5 Lightning protection on meteorological towers SM Modules installed on meteorological towers cannot be protected from a lightning strokes The field strength resulting from the electromagnetic fields and the associated accumulated energy will cause damage to the electronics Two solutions for the problem Erect a higher lightning conductor close to the meteorological tower serving as a light ning collector Install the measuring modules in a distance of some meters Then all lines coming from the tower have to be protected by lightning protection modules 20 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc IMKO 12 6 Installation instructions for SM BLITZ lightning protection modules Basically there are two potential risk sources in the field of environmental measurement technology transmission lines and sensors or network devices Lightning protection modules should always
24. pending on soil homogeneity the tube can be hammered 5 10cm into the soil This cycle is repeated until the tube is fully installed The internal protection tube is then removed and the access tube can be sealed by a rubber bung 1 0 I PUBLIK TECH_MAN TRIME IPH ENGLISH TRIME IPH manual e doc 4 Instructions for Access Tube Installation The following instructions should be taken account of The ramming head the TECANAT ac cess tube and the internal steel guide and protection tube are one unit The internal protection tube has to lie on the cutting shoe of the access tube before it can be fixed with a screw to the ramming head This fixation is neces sary to secure the shoe against being squeezed out by the returning force of the hammer blow The access tube however is fixed to the ramming head by the clamp device Both fixation screw and clamp device should be controlled during the installa tion process and be re adjusted with the adjustable levers if necessary 7 The screw auger that moves easily within the guide tube is used to drill out internal Siea soil to about 0 1m below the cutting Guide and shoe Depending on soil homogeneity TECANAT Protection Tube the tube is then hammered 5 10 cm into Access Tube i i 0 6m 1m or the soil with a plastic hammer with 2m long Saa open support pillar clamps The guide tube is not used for making the hole in the first instance because this could result in soil compactio
25. s designed for mobile field use and can be connected to TRIME T3 T3C or TRIME B3M B3L TRIME IPH has to be supplied with external power 9 24V AC They are designed for being connected to a TRIME HD a TRIME Data Pilot a data logger Trime Logger or any analogue data logger or a PC for monitoring and data logging purposes 1 1 TRIME HD and TRIME Data Pilot operation TRIME IPH is simply screwed onto the sensor and is then connected to the 7 pin connector of the TRIME Data Pilot Please refer to the TRIME HD or TRIME Data Pilot manual for operating instruc tions 1 2 Data Logger Operation TRIME IPH are supplied with an IMP232 Micronet interface or on request with both analogue output 0 1V 0 20mA or 4 20mA and RS232 interface Analogue datalogger must have differential inputs 1 2 1 IMP232 Micronet output for use with the TRIME Logger or ENVISLog operation mode A Intelligent TRIME sensors can be connected directly to the IMP232 Micronet Networking several sen sors requires distribution modules IMKO supplies 3 port 6 port and 12 port distribution modules The number of simultaneously measuring sensors can be set Please note that the IMP232 Micronet s cable length and cable diameter have to be harmonized Oth erwise the energy consumption of the TRIME sensors 200mA during 10 15s can cause a voltage drop TRIME IPH sensors are configured at works for use within the IMP232 Micronet internal code op eration mode A 1 2
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