Resitest-400M
Contents
1. 1 ALL DATA CLEAR store the contour MAPPING 2 NEW FORMAT 3 SEND DATA Resitest 400M June 201 1 mkc 20 28 How to delete MAPPING FORMAT during operation In order to store new data formerly stored data should be deleted a Stop present operation b Press MENU key to open MENU window 1 ALL DATA CLEAR 2 NEW FORMAT 3 SEND DATA c Press A V keys to delect ALL DATA CLEAR and 1 ALL DATA CLEAR press SELECT key 2 NEW FORMAT 3 SEND DATA d WARNING message appears and press SELECT key WARNING ALL DATA DELETE YES select NO cancel e Press CANCEL key fo return to measurement mode and store data from the first point NEER FE DUT OF RANGE EEANN E Resitest 400M June 201 1 mkc 21 28 How to transfer MAPPING DATA to PC a Press MENU key to open MENU window MENU 1 ALL DATA CLEAR 2 NEW FORMAT 3 SEND DATA b Press A V keys to select SEND DATA and press Ta SELECT key 1 ALL DATA CLEAR 2 NEW FORMAT 3 SEND DATA c In INFORMATION window select memory number INFORMAT I ON in which your data are stored using A V key CONNECT PC CABLE SELECT SEND DATA b b 6 b ie ee Ee amta y d After selection press SELECT key to transfer the INFORMAT I ON data in the memory number SAVE DATA 1 SENDING PC e When the data are transferred to PC DATA I NFORMAT I ON TRANSFER COMPLETE message appears DATA TRANSFER COMPLETE Resitest 400M Ju2. 0 0 A V To select MENU or make a sef up in MENU mode Resitest 400M June 2011 mkc 11 28 O POWER Switch ON OFF switch to power or not RS 232 connector Used to transfer the stored data to PC SPIN SERIAL CABLE should be used which was supplied with the instrument CHARGER socket The socket is for rechargeable batteries inside The charger supplied with the instrument should be used How to recharge batteries First connect the plug in the charger to the socketQ in the instrument and plug the power plug to 220 or 110V power When the adaptor is connected red and green LED are lighted When the batteries are fully charged green LED is extinguished dQ SENSOR connector To connect Wenner sensor to the instrument The point marked with black dot is the upside Resitest 400M June 2011 mkc 12 28 8 Inspection using Resitest 400M l Inserting the sponge into the Wenner sensor Insert all of the soaked four sponges into the holes of the sensor s contact Before inserting the sponges wash them in tap water or clean water During surveying if the sponge is dried the sponge should be soaked in water using bath tub Connecting the Wenner Sensor to the main body After connecting the cable to the Wenner sensor connect it to the socket of the main body Turning on the Resitest 400M Power on using the power key At that time the Resitest 400M should be displayed 000 or 001 Confirming the Resitest 400M
3. Check the contact status on the concrete Confirm whether the cable is duly connected The sponge is not inserted into the sensor ring u After soaking the sponge and then insert it Measured results are unstable in the same position w The state of contact is not good Resitest 400M June 201 1 mkc 25 28 12 Specifications Measurement Method Electric Resistivity using Wenner sensor Measuring Range 0 20 k2 20 200 kQ 200 2 000 kQ Display Resolution 0 1 kQ2 1 k amp Measurement Accuracy 1 KR Maximum Range 2 000 k Power 6 x 1 2V AA Recghargeable Battery Battery Life Continuously 4 hours Display 3 2 TFT Color LCD Size 105 H mm x 172 W mm x 68 D mm Weight 990 gram main body Resitest 400M June 201 1 mkc 26 28 Concrete Corrosion Analysis amp Report Program This application software is supplied with Half Cell 200 concrete rebar corrosion tester or Resitest 400M Concrete Resistivity Tester made by MKC Korea The software is protected by copyright and if any one who needs a copy of the software without purchasing M K C Korea s product should contact us and purchase the software This software is supplied without any charge We do not support the software and do not offer upgrade service 1 Window98 User Read Electronic User Manual 2 Windows95 User D Things to be checked This software runs on Windows95 but some version of Windows95 could cause problem Please check b
4. between the sponge and the concrete surface the sponge condition should be all the time When the measurement is finished after pulling out the sponges and get rid of the moisture and then keep them dry The part of the Wenner sensor which is made of the metal should be got rid of the moisture and kept from rust If the sponge is worn away should be changed as new one Resitest 400M June 2011 mkc 10 28 7 Operation of Resitest 400M MENU MODE pressing for a second or longer MENU Select MENU In MENU mode stored data is called or erased and it MODE is possible to set up time Measurement mode is selected Resitest 400M has normal measurement mode and mapping mode To change the mode it should be pressed for a second long 2 HOLD SELECT RANGE pressing for a second or longer HOLD SELECT RANGE SAVE used the measurement to be hold Then signal lines of probe icon on the upper leff are stopped and HOLD icon is displayed By pressing again get back to measurement mode If is used in MENU mode to enter into selected MENU or enter into set up Used to select measurement range To change measurement range press this key for a second or longer There are 3 measurement ranges 0 20 20 200 200 2 000 k2 In case the measurement is not within measurement range OUT OF RANGE is displayed in LCD To save or store what is measured CANCEL Get back to measurement mode or cancel set up
5. insert them to the rings After use take out the sponges to wash in tap water or clean water From time to time you should wash them using bath tub b How to connect the Wenner sensor to the main body After connecting the cable to the sensor connect the cable fto the socket in the main body If the main body is turned before connecting the cable to the main body the main body may be damaged during connecting the cable so that if is advisable to turn the instrument after connecting cables c Concrete Surface If the concrete surface is dry or wef this can cause significant error Also when the concrete surface is stained if can not be measured and may cause significant error If possible therefore it is advisable to keep the concrete surface as the best condition In case of the concrete surface coated with oil paint if is impossible to measure the electrical resistivity Likewise in the event of the concrete surface coated with water paint measurement may be incorrect Should be drilled 2 3 mm hole into the concrete in order to get the best results Resitest 400M June 2011 mkc 8 28 d Main body The Resitest 400M consumes the battery quite much so that you would better take the instruments with full charged Before going on site turn on the instrument and check whether the instrument is operated well Check if the measurement is O K with reference block While there is no pre defined minimum spacing between measuremen
6. the presence or absence of the individual aggregate particles usually having a very high resistivity will lead to high degree of scatter in the measurements Using larger spacing may lead to inaccuracies due to the current field being constricted by the spacing will also increase the error in the measurement of the concrete resistivity due to the increased influence of the conductive reinforcing steel embedded below the surface of the concrete Therefore in case that the surface of the concrete is more smaller the 150 mm the measurements could be impossible In case that the surface of the concrete is crooked or hollow the measurement could be impossible as well Because the Wenner sensor is paralleled all of the four electrodes should be contacted on the surface of the concrete The results may be affected by the contact condition between the electrodes and the concrete surface of the concrete In case Resitest 400M it is easy to get the most accurate results using special ring should always pay attention to the contact condition Resitest 400M June 201 1 mkc 7 28 5 Preparation for use of Resiftest 400M a How to insert the sponge into the Wenner sensor The sponge of the Wenner sensor should always be kept clean condition to get accurate resulis Before and affer every measurement the sponge need to be cleaned using Bath Tub water container which is supplied with the instrument during measurement Soak the sponges in water and
7. using the reference block When the Wenner sensor of RI 400M is contacted on the reference confirm if it displays in the range of 62 5k2 cm 1 5 or not The displayed value in Resiftest 400M should be within the range of 61 0 64 0kQ cm Resitest 400M June 2011 mkc 13 28 9 Operation according to each mode 1 Normal Measurement Mode In normal measurement mode traditional measurement is performed After measurements Max value minimum value number of stored data are displayed a Contact Wenner sensor on concrete and ascertain the measurement b Press HOLD key to hold measurement c After ascertaining if the measured value is correct press SAVE key and then SELECT key to store the measurement When CANCEL key is pressed the measurement is not stored and returns fo normal measurement mode d When a datum was stored SAVE COUNT 1 is displayed on the bottom of LCD Resitest 400M June 2011 mkc 14 28 How to call stored data a Press MENU key to open MENU window b Select LOAD DATA by pressing A V key and press SELECT key c Data numbers date and measurement value are displayed one after one b By pressing A V key select ALL DATA CLEAR and press SELECT key Resitest 400M June 201 1 mkc 15 28 c If press SELECT key when warning message appears all dat stored are deleted d It can be ascertained by opening LOAD DATA window Resitest 400M June 201 1 mkc 16
8. 28 How fo set up fime a Open MENU window by pressing MENU key b Press A V keys to select TIME SET and press SELECT key c Press SELECT key in CURRENT TIME to change the year d Press A V keys to set the year and then press SELECT to select the month which is changed in red color Press A W keys to set the month and press SELECT key The others are set up in same manner e When set up is completed press CANCEL key to close CURRENT TIME window Resitest 400M June 2011 mkc 17 28 2 Mapping Mode In MAPPING mode the operator can edit any co ordinates and store measurement values in the co ordinates and finally generate a contour mapping image nro oe How to set any X Y co ordinates FORMAT a Press MENU to open MENU window MENU 1 ALL DATA CLEAR 2 NEW FORMAT 3 SEND DATA b Press A W key to select NEW FORMAT and MENU 1 ALL DATA CLEAR press SELECT key 2 NEW FORMAT 3 SEND DATA z c When WARNING message appears press ARNING T an DELETE SELECT key At this point not stored data are Vee select deleted NO cancel d After input x y co ordinates values NEW FORMAT in NEW FORMAT window press SELECT COLUMNS SET WEDT H Be HEIGHT 5 through 10 x 10 The co ordinate values are set up by 2 x 2 e After set up press CANCEL key to return to measurement mode Resitest 400M June 201 1 mkc 18 28 How to store measurement values in the FORMAT a Af
9. Resitest 400M Concrete Resistivity Tester Instruction Manual THA OH OLE LY AWS see man Inter l www mkckorea com Contents 1 Introduction 2 2 Measurement and ifs principle 0 3 3 Components of Resitest 400M Kif 5 4 Basic information on Resitest 400M 6 5 Preparation for use Resifest 400M 8 6 How to maintain Resitest 400M 0 10 7 Operation of Resitest 400M 0 0 00008 11 8 Inspection using Resitest 400M 0 8 13 9 Operation according to each mode 14 10 Analysis of resulfS cece 24 11 Maintenance 25 12 Specifications 26 Resitest 400M June 2011 mkc 1 28 1 Introduction We thank you for your procurement of the Resifest 400M Before using this instrument We recommend you are fo be fully aware of this instruction manual of the _ Resifest 400M The _ Resifest 400M is a useful measuring equipment that can be used to measure the electrical resistivity of the surface of the concrete and defect corrosion state of reinforced concrete structures The Resitest 400M mainly consists of the basic equipment and the Wenner array sensor The measurement is to assess results when the Wenner sensor contacts the surface of reinforced concrete structures In LCD battery status is displayed If has HOLD key to hold present measurement display and other keys to store measurement display
10. bility of active and rapidly advancing corrosion is very high than the one of higher resistivity The resistivity is calculated using the formulae R v I and p 27aR where R is the resistance v is the volfage measured across the voltage electrodes Il is the current flowing between the current electrodes p is the resistivity and a is the distance between the electrodes R v Il p 27aR Resitest 400M June 2011 mkc 3 28 Current Source Resistivity Measuring Electrodes Path of Current lt Steel Reinforcement gt 0 Concrete The measurement Principle of the Resitest 400M The Wenner sensor of the Resitest 400M consists of a row of four electrodes By passing an electric current between the two outer current electrodes and by measuring the resultant voltage developed across the two liner voltage electrodes the Resitest 400M is to assess the resulfs and display the electrical resistivity k2 cm on LCD of the main body Resitest 400M June 201 1 mkc 4 28 3 Components of Resitest 400MM The Resitest 400M consists of the followings W Resitest 400M main body fj Wenner sensor u Reference PCB w Water container fj Connection cable uj Insert sponge 8 fj Sensor cap 6 W RT 4040 CD concrete corrosion analysis amp report program W Carrying Pouch tj Instruction Manual ff Aluminum carrying bag SS SS SS N main body Wenner senso
11. elow Check Windows version number Go Start gt Setting gt Control panel gt System gt General gt System 7 22 22 2 2 22 22 is the version number Check the number with below Windows 95 initial version 4 00 950Windows 95 OSRI 4 00 950 AWindows 95 OSR2 4 00 950 B Windows95 initial version and OSRI user can go ahead fo install Half Cell 2020 Resitest 4040 application software Insert the CD to CD ROM drive and install Internet Explorer in le_401 folder Affer installation is finished read Electronic User Manual If Internet Explorer is not installed the software may not work properly For windows95 OSR2 users read Checking Internet Explorer installation Resitest 400M June 2011 mkc 27 28 2 Checking Internet Explorer installation Check if Internet Explorer is installed in your PC In general Internet Explorer is installed in a PC lf Internet Explorer is installed read Electronic User Manual lf Internet Explorer is not installed insert the Half Cell 2020 Resitest 4040 application installation CD to the CD drive then install Internet Explorer in le_401 folder le4setup exe After fhe installation is finished read Electronic User Manual 3 How fo use Electronic User Manual The User manual file is in the CD Internet Explorer is needed to read the User Manual Insert the Half Cell 2020 Resitest 4040 application installation CD to the CD drive and open Manual folder then open the man
12. iable results owing to the character of the concrete Because the concrete is an electrically non homogeneous material it is likely to be affected by the ambient temperature and the moisture content of the concrete Measuring the same point by the Resitest 400M the accuracy of the result should be within 1 However if must be remembered that the resistivity of the concrete can vary as the moisture content changes Values of less than 1kQ cm for water saturated concrete can increase to over 100k2 cm for the same concrete when oven dried Resitest 400M June 2011 mkc 6 28 Therefore be sure that the electrical resistivity of the concrete is affected by the ambient temperature and the moisture content change Also an electrical current is affected by the reinforcement bar in the concrete Therefore if the measurement is to be conducted on the area of concrete with reinforcement bar use the Covermeter 3000 Q see man intl or other concrete cover meters to locate precisely the position of the reinforcing bars Thereafter keep the Wenner sensor as far as possible from reinforcement bars When the surface of the concrete is more narrower than the widthof the Wenner sensor 150 mm or when all of the four electrodes could not contact with the surface of the concrete that is too rough the measurements are impossible The Resifest 400M consists of a row of electrodes arranged at 50 mm spacing in a straight line If the spacing is too small
13. in memory Especially RT 400M has contour mapping function which enables easy analysis of concrete status in site by color mapping Note If Wenner sensor comes into contact with statically charged materials or high conductive materials such as metal as not concrete or standard block the electronic circuitry in Resitest 400M will be damaged due to overflowing current Resitest 400M June 201 1 mkc 2 28 2 Measurement and it s principle Corrosion of reinforcing steel is encountered in a variety of reinforced concrete structures Corrosion can result in spalling of the concrete and reduction in the cross section of the reinforcement thus if is important to detect corrosion at an early stage of its development The Half cell potential technique Half cell 200 Q see man int l can be used to locate corroding reinforcement without disrupting the concrete over fo the reinforcing steel By adopting this technique this is effective in locating regions of corrosion activity using contour mapping program However to connect between the electrical connection and reinforcement a part of the concrete should be disrupted However Resitest 400M which has the Wenner sensor comes into contact with the concrete cover if can easily measure the sta e of corrosion of the concrete cover The resistivity of the concrete extremely does an important role about advancing corrosion When the resistivity of the concrete is low it is assumed that the proba
14. ne 201 1 mkc 22 28 How fo transfer MAPPING DATA using RT 400 FC program RT 400 FC enables to send MAPPING DATA stored in the instrument to convert it to inp file The converted inp file enables to generate detailed contour mapping and report format using Resitest 4040 software in CD Resitest 400 File Converter a Excufe Setup exe file to install RT 400FC program RT 400 FC A meant in PC g COM1 E Start Download Resitest 400 File Converter RT 400 FC 4A mank b Click Start Download button to transfer the MAPPING DATA stored in RT 400M i ame TEE J 7 a ee c After the transfer allocate file name and position Resitest 400 File Converter RT 400 FC AA aie d The stored data can be checked in LCD Serial Port COM1 E Resitest 400M June 201 1 mkc 23 28 10 Analysis of results When measuring the corrosion of concrete the electrical resistivity is affected by the ambient temperature and the moisture content of the concrete as described in the above That is why it is difficult for the electrical resistivity to fix the specific datum point of the results However the following table is generally used on site as the reference for analysis lf the resistivity is Resitest 400M June 201 1 mkc 24 28 11 Maintenance a Troubleshooting Turning on the power key but nothing appears w Battery is exhausted battery should be recharged Even making a measurement 0000 does not disappear fj
15. r Reference PCB Water container a Sts 7 gt a on epee Ra kara ee y Gaei Ba EA u TO SEES Sae T gt s r Connection cable Insert sponge Sensor cap Pouch Adaptor manual Carrying Bag Resitest 400M June 201 1 mkc 5 28 4 Basic information on Resitest 400M From a long time ago an inspection instrument which has the four point electrodes had been used to measure and assess in soil strata When the Wenner sensor with four electrodes was used to measure the corrosion of the concrete several problems had been found To solve these problems papers have been released in the early of 1980 s The Colebrand Ltd in England has developed the Resistivity logger on the basis of measurement of the Electrical Resistivity of Reinforced Concrete Structures for the assessment of Corrosion Risk by S G Millard J A Harrison amp A J Edwards The CNS Lid in England also has developed the Resistivity meter on the basis of Resistivity Measurements in Concrete by A J Ewins and Proceq SA in Switzerland has developed the Resi as a new Resistivity meter lately The Resitest 400M was designed to make accurate measurements with easy operation by solving the problems and inconveniences of the existing equipments Even though the measurement of corrosion of the concrete using the Resitest 400M is very effective there are a few difficulties that must be overcome fo obtain rel
16. ter set up contact the Wenner sensor on the concrete surface and ascertain the measurement ne b Press HOLD key to hold the measurement value c Press SAVE key to ascertain the measurement 3 value in MENU window Affer ascertaining if the VALUE 953 525 SAVE THIS VALUE value is correct press SELECT key fo store the YES l a ies measurement When CANCEL key is pressed the E measurement is not stored and return to measurement mode d Contact Wenner sensor on the second point After ascertaining the measurement repeat the b c procedure to store the data e When all the blue colored cursors are gone and al the measurement points are stored then mapping procedure is completed Resitest 400M June 201 1 mkc 19 28 1m f During measurement or after the completion of image mapping it is possible to ascertain stored data using A V keys by moving green cursor to any co ordinates wanted The stored data appears in blue color on the right side bottom OUT OF RANGE x In contour mapping high resistivity is represented by blue color and low resistivity in red color lt High Low gt How to store completed image MAPPING FORMAT a After ascertaining the completed contour mapping press SAVE key b Using A V keys select memory number from 1 _ WARNING E to 5 to store the data BUFFER IS FULL SELECT SAVE AREA c Affer selecting the number press SELECT key to MENU
17. ts on the surface of the concrete member it is of little value to take two measurements from virtually the same point Conversely measurements taken with very wide spacing may neither detect corrosion activity that is present nor result in the appropriate accumulation of data for evaluation The spacing shall therefore be consistent with the member being investigated and the intended end use of the measurements Generally a spacing of 50 cm has been used on site But in case of the place where the probability of corrosion is high smaller spacing is recommended When measuring at a certain place it is better to keep the Wenner sensor as far as possible from the reinforced bars Resitest 400M June 201 1 mkc 9 28 6 How to maintain Resitest 400M a How to maintain the Resitest 400M If possible if is advisable for the Resifest 400M to be kept in AL carrying case By doing so the Resitest 400M is prevented from moisture and dust And in case of dropping that were caused by mistake damage can be minimized as well The Resifest 400M can be continuously used for about 5 hours This is why before using if the battery should always be recharged b How to maintain the Wenner sensor In the event of the measurement of the electrical resistivity of concrete structures for the assessment of corrosion risk 4 electrode Wenner sensor is used on all occasions so far Because the accuracy of the instrument is affected by the contact condition
18. ual file you want The manual explains software installation software usage and report printing Resitest 400M June 2011 mkc 28 28
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