Home

Gebruikershandleiding

1. 5 2 4 Test 4 Soil resistivity test Wenner method Remember to select the correct distances when executing additional tests at different distances The correct selection of distances must be done before each test otherwise each calculation s will be invalid Each result can be saved only once How to carry out test 4 1 Connect the test cords with the instrument conform the circuit diagram of attachment 2 2 Drive the four test rods equally spaced a 1 a 8 m from each other into the ground The depth of the rods is 5 of distance a 3 Set the rotary switch to Specific earth resistance 4 Select the distance between the rods by pressing the Distance m and the iT J keys to save required distance a in meters accurate Press the Start key and release it 6 The result is displayed Read out the result save it if required and note the memory codes when necessary 7 Turn the rotary switch to Earth resistance to view the value of the measured resistance 8 Press the Start key and release it The value of the resistance will be displayed in ohms 9 Replace the test rods or carry out another measurement Nn NIEAFN Utrecht uystrumenrs Page 21 Ref 003 NIEAFN Example measurement setup Measurement setup as follows Y A GW YU 66 With the included wires the maximal distance of a can be 8m unstrumenrs Page 22 Utrecht Ref 003 5 3 MEMORISIN
2. Description Location on the tester Warning At the back side of the tester on the instruction General sign for danger Read the label and on the left side of the tester instructions carefully before use Warning At the back side of the tester on the instruction Danger for direct contact with live parts label and under the battery cover Mark At the back side of the tester on the instruction Insulation class II double insulation label Mark The KEMA KEUR is placed on the front side ne of the tester Marks the KEMA certification of the tester CE mark The CE mark is placed on the front side of the Declares the conformity with the European tester Directives All peripherals which are used by this tester must be provided with a CE mark For example the use of a PC NIEAFN Utrecht uystrumenrs Page 4 Ref 003 CONTENTS GENERAL SAFETY REGULATIONS 2 INTRODUCTION 2 1 GENERAL 2 1 1 The intended use 2 1 2 2 1 3 3 TESTER COMPOSITION 3 1 GENERAL 3 2 PRINCIPLE OF MEASUREMENT 2 Visual inspection 3 2 2 Two point earth resistance measurement Three point earth resistance measurement Clamp system earth resistance measurement Soil resistivity test Wenner method INSTALLATION START UP AND ADJUSTING w w N w N w w N A w N nn mr HOW TO USE THE TESTER cscsssssssssesssssssesecsssssesseeees 5 1 OPERATION wisssssvssscssssssvssssxsssssssasasscasscss
3. Four point specific earth resistance resistance measurement NIEAFN uystrumenrs Page 6 Utrecht Ref 003 1 GENERAL SAFETY REGULATIONS Read before you perform any action in connection with the tester this user manual carefully Nieaf Smitt by is not liable for injuries financial damage and or excessive wear resulting from incorrectly performed maintenance incorrect use of or modifications to the instrument It is not allowed to remove to skirt or to tide over by handy constructions the enclosure or safeties of the tester during normal use Method of measurement and range are indicated on the back side of the instrument It s forbidden to place and or use the instrument in a room where is a risk of explosion If the tester is used by a third party you being the owner are responsible unless otherwise specificated Repair can only be done by Nieaf Smitt by Provide a clean and save workplace which has sufficient lightning NIEAFN Utrecht uystrumenrs Page 7 Ref 003 2 INTRODUCTION 2 1 GENERAL 2 1 1 The intended use The resistance tester is intended to be used for judgement of the safety of electrical installations The portable tester is intended for two or three point earth resistance measurements as well as specific earth resistance measurement If the instrument is used in manner not specified in this user manual the protection provided by the instrument may be impaired and the supplier is
4. Place the battery cover back and switch on the instrument 5 LI Ff should not be displayed after switching it on The memorised results have not been erased now 6 2 CLEANING Do not use liquids based on petrol Do not spill cleaning liquid over the instrument Use soft patch moister by water or alcohol and leave the instrument to dry totally after the cleaning NIEAFN Utrecht unstrumenrs Page 33 Ref 003 7 ACCESSORY AND REPLACEABLE PARTS Supplied standard set one English user manual E test cord black length 4 5 m ES test cord green length 4 5 m S test cord red length 15 m H test cord blue length 20 m earth rod 4 pieces test cord support 4 pieces Etest cord male plug 45 M black ES test cord male plug 45 m green S test cord male plug H test cord male plug 20 M blue Figure 10 Test cords Check all the supplied items enclosure of the instrument as well as the accessories If there are any damages please return the tester to the supplier for exchange or service Supplied options RS232 cable for data transfer PATS W Administration Software E Test Software free from internet www nieaf instruments com Test clamp 1000 1 Other clamps on request Carrier bag Carrier suitcase NIEAFN Utrecht uystrumenrs Page 34 Ref 003 Attachment 1 EU DECLARATION OF CONFORMITY Product Earth Resistance Tester Identificatio
5. the test room Keep enough clearance around the instrument to facilitate an easy operation adjustment and reading of test results without any problems or extra danger Insert the batteries in the instrument Connect the test object according to the circuit diagrams with the ERT S 5 Carry out the selected test AU Find a place to put the manual such that it is within reach during the use of the instrument NIEAFN Utrecht uystrumenrs Page 16 Ref 003 5 HOW TO USE THE TESTER 5 1 OPERATION 1 On off key 1 Instruction label 2 Rotary switch 2 Serial number 3 Increase key of memory location 3 Battery cover 4 Erase key of memory location 4 fixing screw for battery cover 5 DISPLAY key 5 Plastic cover of the locking screw 6 Distance test clamp m key 6 Locking screw covered by a rubber foot 7 Decrease key of memory location 8 START key 9 Store key to save measuring results 10 Recall key to recall saved results 11 Memory indication LED 12 Nominal voltage LED 13 LCD Display 14 Connection functional and RS232 Figure 4 Operating NIEAFN Utrecht uystrumenrs Page 17 Ref 003 Keys Function key description Table 2 Switches Selector position Description ON OFF to switch on off the tester the tester will switch off automatically after it hasn t been used for ten minutes or more Recall resul
6. user manual the test equipment is described with the words tester instrument or test device values or displayed data is placed between inverted commas for example 230 V keys or switch positions are placed between angular brackets for example START key NIEAFN Utrecht uystrumenrs Page 2 Ref 003 Warranty Nieaf Smitt bv guaranties the tester for a period of 6 months The period of warranty will be effective at the day of delivery The warranty clauses and the stipulations regarding liability in terms of delivery FME and HE Copyright 1997 2002 All rights reserved Nothing from this edition may be multiplied or made public in any form or manner either electronically mechanically by photocopying recording or in any manner without prior written constent form Nieaf Smitt bv Nieaf Smitt bv reserves the right to change parts at any given moment without prior or direct notification to the client The contents of this user manual may also be changed without prior warning This user manual is compiled with all possible care but Nieaf Smitt bv can not accept any responsibility for possible errors in this user manual or any consequences resulting from that NIEAFN Utrecht uystrumenrs Page 3 Ref 003 Warning pictograms on the tester There are a number of pictograms on the tester meant to warn the user of remaining risks that may be present in spite of the safe design Table 1 Pictograms on the tester
7. G OF RESULTS Each saved result is equipped with an identification code defined by the customer The code consists of 2 x 3 characters as follows DISPLAY lt lt X X X YYY Where X X X represents a code of a certain measuring place inside the tested object and YYY represents a code of the tested object Remark X X X is at least one level higher than YYY For detailed information we refer to the manual delivered with the PATS W Administration Software Each displayed result can be stored as follows Pressed key Comments 1 The last changed partial code X X X of YYY which is used for the Opslaan memorising of the results will if necessary be saved in the order of changing 2 T 4 Insert new codes using the 7 4 keys if necessary 3 DISPLAY 1 4 Check the other part of the code pressing the DISPLAY key and change it using the 4 keys if necessary 4 Opslaan Confirm saving by using the Save Result key The displayed value is now saved to a memory location including the sub results and the parameters of the measurement that can be checked by using the DISPLAY key when it is set into the Recall Result function The list of the sub results and the parameters which are saved to memory together with the main result are shown in the following table Table 3 Sub results and parameters NIEAFN Utrecht uystrumenrs Page 23 Ref 003 If one wishes to abandon the cu
8. SPLAY Use the DISPLAY key to select an object code without dots if necessary t 4 Insert the desired code by using the H keys if necessary MI Clear LI I is flashing Clear By pressing this key again the clearing will be confirmed Memo BE NIEAFN Utrecht uystrumenrs Page 28 Ref 003 Only results of a certain measuring place X X X of the object are to be erased The rotary switch in any position but the RS232 position Pressed key Comments Recall The last changed partial code X X X of YYY used for the recalling of the results is Resutt displayed t 4 Insert the desired object measuring place code by using the tT H keys DISPLAY Use the DISPLAY key to select a measuring place object code t 4 Insert desired object measuring place code by using the tv keys if necessary DISPLAY Use the DISPLAY key to select the already inserted measuring place code with dots if it is not already selected Clear FI A LI F is flashing Clear Memo j By pressing this key again the clearing will be confirmed Only results of a certain measuring place of the object will be erased Only recalled result displayed is to be erased Set the rotary switch in any position but the RS232 position Execute the following acts 1 Recall the result under a certain measuring place and object code follow the procedure under paragraph 5 6 2 Use the J k
9. TART key the general warning mark appear During the measurement higher voltage than 30 V could be present between the test cords and the earth rods Each result can be saved only once NIEAFN Utrecht uystrumenrs Page 19 Ref 003 How to carry out test 1 Connect the test cords with the instrument conform the circuit diagram of attachment 2 2 Set the rotary switch to Earth resistance 3 Press the Start key and release it 4 The result is displayed Read out the result save it if required and note the memory codes when necessary 5 Disconnect the test object or carry out another measurement ee 5 2 2 Test 2 Three point earth resistance measurement Both current and potential spike resistance s will automatically be tested during the measurement If there is a current spike resistance too high e 4k Q 100R or gt 50k Q2 then l L and the result will flash at the display after finishing the measurement m P and the result will flash if the potential spike resistance is too high Find a better place to drive the earth rod and or pour some salty water around the critical earth rod in order to reduce the resistance If the present voltage difference between E and H is higher than approx 20 V will before pressing the START key the general warning mark appear Each result can be saved only once How to carry out test 2 1 Connect the test cords with the instrument conform the c
10. User manual Earth Resistance Tester With clamp aaa SS ERTS Resul NIEAFN Den it Earth resis Clear Distance tance tester st Supplier Nieaf Smitt bv Vrieslantlaan 6 3526 AA Utrecht Holland P O box 7023 3502 KA Utrecht Specifications of the equipment ERT S Specifications of the user manual Date 05 02 2004 Number 561144039 Ref 004 Preface This manual describes the Earth Resistance Tester The information in this manual is important for proper and safe functioning of the machine In case you are not familiar with the operation the preventive maintenance etc of the Earth Resistance Tester then you read this user manual from the beginning to the end thoroughly If you are familiar with these maters you can use this manual for reference You can find the required information rapidly using the table of contents In this user manual the following four marking conventions are used to focus attention on certain subjects or actions TIP gives you suggestions and advice to perform certain tasks easier or handier ATTENTION aremark with additional information draws your attention to possible problems CAUTION the machine may be damaged if you do not carefully execute the procedures WARNING FOR DANGER you can seriously hurt yourself or seriously damage the product if you do not carefully execute the procedures this document is described with the words manual or
11. a 0 02 R 19 99 X 20 0 199 9 2 2Aa 0 2 X 19 99 X lt R 199 9 X 200 999 2 2Aa 2X 199 9 U lt R 999 X 1 00k 9 99k 5 999k X lt R 9 99k X 10 0k 99 9k 5 9 99k lt R 50 0k 100k 1999k Automatic range selection Possible adjustment of the distance between two measuring rods up to 20m in steps of 1m See all the rest technical specifications in paragraph Three point earth resistance measurement Take into account Rc Rc Razen Rp Rp Rp see figure 3 NIEAFN Utrecht uystrumenrs Page 12 Ref 003 Reon Figure 3 Soil resistivity measurement Transport The tester is a portable test device which can be hand held or lay down solid foundation during the tests Take care of the instrument during transport to avoid any damage 2 3 CERTIFICATION The tester and this manual have been designed constructed and tested according to the European directives During all these phases the relevant preliminary European standards have been taken into account The CE mark has been mounted on the instrument The directives and the standards mentioned are enumerated in the EC Declaration of Conformity NIEAFN Utrecht unstrumenrs Page 13 Ref 003 3 TESTER COMPOSITION 3 1 GENERAL The ERT S is built in an enclosure of solid ABS plastic The display is situated at the front side of the tester The test results are displayed The main parts see figures in Chapter 5 are l
12. arked with a star When executing various tests various warnings could be displayed They are having the following meanings NIEAFN Utrecht unstrumenrs Page 30 Ref 003 Table 4 General faults and warnings or Result is out of measuring range see paragraph Specifications Over range Lae Disturbing voltage noise is higher than approx 20Veff r Current spike resistance is too high see paragraph Specifications a L Alternating with the measured value Potential spike resistance is too high see paragraph Specifications Alternating with the measured value Battery voltage is lower than 4 3V replace the batteries Measuring identification number With dots 7 Object identification number Without dots Clear function is active Reset of the instrument has been carried out or new batteries are inserted The ES and S terminals are changed change them 5 9 CALIBRATION AND REPAIR To warrant the technical specifications of the tester we will advise you to calibrate the instrument at least once a year It s to be shown that the tested products are governed by an established test procedure The calibration will be executed by Nieaf Smitt b v In the calibration report the results judgements town date and name of the reponsible person will be mentioned There are no user replaceable parts in the instrument batteries excepted For calibration and or service you can send your tester post paid to
13. em for testing of such earth appliances without disconnecting them 3 2 5 Soil resistivity test Wenner method The Wenner method is the industry standard In 1915 Dr F Wenner of U S the Bureau of standards developed the Four electrode method to determine resistivity The four test rods are driven at equal distances a at a depth of 5 of a The resistance will be measured and a calculation will be executed The soil resistivity is measured in ohm meters and symbolised by A Rho and is calculated by the following formula A 2BaR Where a Distance between the rods R Resistance of the soil between ES and E terminals NIEAFN Utrecht uystrumenrs Page 15 Ref 003 4 INSTALLATION START UP AND ADJUSTING The tester can only be used if no damages or defects are noticed and all original components belonging to the tester are mounted The transportation and the handling of the tester should be done carefully to prevent any damage This paragraph describes the installation and the starting up procedure of the instrument The installation the starting up and the adjustment of the instrument may be done by competent persons 1 Unpack the instrument Remove the packing materials without causing damages to the environment Check the tester on possible damages If damages are noticed contact Nieaf Smitt bv 2 Put the instrument in a horizontal position at the workplace or on a table in
14. excluded from any responsibility 2 1 2 Target group The target group of people for whom the tester and this user manual are applicable are competent and technical qualified persons Competent persons are persons who have got a certain level of technical knowledge gained by education training and who have got certain skills required to operate the tester Technical qualified persons are persons who are competent and who have got a certain level of technical knowledge gained by education training and who are familiar with the applied technology in the instrument and are aware of the possible dangers and risks Repair can only be done by Nieaf Smitt bv By operating we mean setting up the instrument and executing tests processing the test results NIEAFN Utrecht uystrumenrs Page 8 Ref 003 2 1 3 Working principle Structure The ERT S is a electronic instrument intended for execution resistance and or specific earth resistance measurements Select the test by means of the rotary switch Now the user is able to prescribe the desired measuring method The test results are clearly displayed on the LCD Connecting The instrument is powered by four alkaline batteries 4 x 1 5 V IEC The tester is provided with a on off switch and can after powering up the instrument be used at once The test cord or the RS232 cable data transfer cable are connected at the upper side of the tester Measuring Each te
15. eys to select the result which has to be erased MI 3 Press the Clear memory key LI I is flashing 4 Press the Clear memory key again to confirm the erasing Only the recalled result under a certain measuring place of the object is erased now The next result saved under the same measuring place and object code is displayed If one wishes to abandon the current procedure recalling clearing the rotary switch position must be changed NIEAFN Utrecht uystrumenrs Page 29 Ref 003 5 7 RESET OF THE INSTRUMENT After inserting the batteries or if there is a malfunction noticed it is advisable to reset the instrument How to reset 1 Switch off the instrument 2 Press the Clear memory key and keep it pressed while you re switching on the instrument 3 7 E 5 is displayed for a while meaning the reset function has been effected Performing the reset function means that all memory locations will be erased Parameters of all functions will be set to it s default values as follows the nominal voltage for Rms function is set to 100V the compensation of the test cords resistance is erased the measuring place identification number is set to 0 0 1 the object identification number is set to 001 5 8 TROUBLESHOOTING Table 4 describes the different displayed fault messages of the tester For each fault an explanation and cause is given Faults which demand technical qualified persons are m
16. ircuit diagram of attachment 2 2 Set the rotary switch to Earth resistance 3 Press the Start key and release it 4 The result is displayed Read out the result save it if required and note the memory codes when necessary 5 Disconnect the test object or carry out another measurement 5 2 3 Test 3 Partial earth resistance UTILITY method How to carry out test 3 1 Connect the test cords with the instrument conform the circuit diagram of attachment 2 2 Set the rotary switch to Earth resistance with clamp 3 Press the Start key and release it 4 The result is displayed Read out the result save it if required and note the memory codes when necessary 5 Disconnect the test object or carry out another measurement The ERT S takes the clamp information into account therefor the result must be calculated as follows Result v R clamp NIEAFN Utrecht uystrumenrs Page 20 Ref 003 Use the original clamp 1000 1 which is not a part of a standard set can be supplied by NIEAF SMITT upon separate request in order to reach the technical specification listed in paragraph 2 2 The minimal voltage drop caused by the measuring current across the Rror is 0 01V therefor is the minimal value of Rror 0 52 The minimal current measured by the clamp 1000 1 is 0 5mA If the current measured by the clamp is lower than 0 5 mA the result will flash at the display Each result can be saved only once
17. isted below Front 1 On off key 2 Rotary switch 3 LCD display NR 13 in the figure Back 1 Instruction label 2 Serial number 3 Battery cover 4 Battery cover fastening screw NIEAFN Utrecht unstrumenrs Page 14 Ref 003 3 2 PRINCIPLE OF MEASUREMENT 3 2 1 Visual inspection Visually check the test object or installation before executing the safety tests The function of the visual inspection is to ensure the electrically safety of the latter parts Check wires cables and components for possible damages If any damage has been noticed it isn t allowed to perform any tests before a technical qualified person has repaired the test object or installation The visual inspection is executed by the operator 3 2 2 Two point earth resistance measurement Earth resistance measurement by means of a well earth and available terminal 3 2 3 Three point earth resistance measurement Earth resistance measurement by means of two test clamps 3 2 4 Clamp system earth resistance measurement If there are more than one earth systems connected parallel then it is very important to know what s the quality of each system separately In order to test each system separately without using a clamp each system should be separated mechanically mechanical connections are usually critical to be disconnected because of rusty connection components like screws nuts spacers etc Therefore it s advisable to use the clamp syst
18. n of the instrument Trademark Nieaf Instruments Model Type ERT S Nieaf Smitt herewith declare that the instrument which this declaration refers to is in conformity with the following standards and according to the conditions of following Directives Low Voltage Directive 73 23 EEG as last amended EMC Directive 89 336 EEG as last amended VDEO0701 IEC1010 1 EN 55022 class B NEN EN 50081 1 NEN EN 50082 1 IEC801 2 level 3 IEC801 3 level 2 IEC801 4 level 4 Place and date of issue Name and signature or equivalent stamp of authorised person NIEAFN Utrecht uystrumenrs Page 35 Ref 003 Attachment 2 1 4 Circuit diagrams Two point earth resistance measurement Connect the instrument to the test object or installation according to the circuit diagram Earth re with clar ay A YAN CLILLELEA Send Data Sond Dota 25282 N MY Wd Gh RS Bag l Re agp Rori earth resistance of installation water Roci earth resistance of tested object C Result R R NIEAFN Page 36 uystrumenrs Utrecht Ref 003 2 4 Three point earth resistance measurement Connect the instrument to the test object or installation according to the circuit diagram Earth resistance comes erm i Qe RS aeaeS BD amp Result NIEAFN Utrecht uystrumenrs Page 37 Ref 003 3 4 Clamp system earth resistance measurement Connect the instrument to the test object or i
19. n order to transfer the stored data to the PC or to the printer NIEAFN Utrecht uystrumenrs Page 26 Ref 003 RS232 parameters baud rate 4800 Baud format 1 start bit 8 data bits 1 stop bit no parity protocol Xon Xorr Type Tester Serial Nr 9621002 Dat Operator Plac Not Object 001 Place 001 Test 1 Testresult Figure 8 An example of print out If one wishes to stop transmission the rotary switch position must be changed NIEAFN Utrecht unstrumenrs Page 27 Ref 003 5 6 ERASING OF RESULTS In order to avoid confusion it is advisable to erase all stored results before starting new family of measurements Sometimes only results stored under a certain object number or measuring place of the object are to be erased or even only a recalled result has to be erased To prevent confusion it is important to follow the erasing procedure correctly All results are to be erased Set the rotary switch in any position but the RS232 position Pressed key Comments Clear MI v LI T is flashing dlear By pressing this key again the clearing will be confirmed LL All results will be erased Only results of a certain object YYY are to be erased Set the rotary switch in any position but the RS232 position Comments The last changed partial code X X X of Y YY used for the recalling of the results is Pressed key Recall Result displayed DI
20. nstallation according to the circuit diagram Seema OR or ce es Be amp BO NIEAFN Utrecht unstrumenrs Page 38 Ref 003 4 4 Soil resistivity test Wenner method Connect the instrument to the test object or installation according to the circuit diagram S fo J Jf P Ro Res Rp Ror a AAA MWWWWWW0 WW i NIEAFN Utrecht unstrumenrs Page 39 Ref 003
21. nstrument may only be done by competent persons Never open the instrument during thre esting Check before every test cables and test cords on possible damages tester on possible damages and or defects NIEAFN Utrecht uystrumenrs Page 18 Ref 003 ee Check the instrument on visible damages and or defects for example the power plug the line cord etc Don t carry out any test with a damaged or broken instrument Provide skilled reparation first 2 Do not connect the test object as well as the test cords with the tester 3 The instrument can be used at once Test selection First carry out a visual inspection on the test object or the installation Connect the tester conform the circuit diagrams of attachment 2 We have four different tests Test 1 Two point earth resistance measurement Test 2 Three point earth resistance measurement Test 3 Partial clamp system earth resistance measurement UTILITY method Test 4 Soil resistivity measurement Wenner method 5 2 TESTING Avoid testing objects or installations under the influence of high electromagnetic and or electrostatic fields In the following paragraph the test methods will be explained We consider that the starting up is carried out as described in paragraph 5 1 1 5 2 1 Test 1 Two point earth resistance measurement If the present voltage difference between E and H is higher than approx 20 V will before pressing the S
22. rrent procedure memorising the rotary switch must be turned For all measuring results numbers from 001 up to including 999 are available for the object and for the measuring place If one does not care numeration of objects then all the results can be saved under the same object code Only the measuring place code has to be changed from test to test If one does not care numeration of objects as well as measuring places then all the results can be saved under the same object and measuring place code simply by omitting steps 2 and 3 of the upper demonstration 5 4 RECALLING OF MEMORISED RESULTS Each memorised result is equipped with an eventual sub result and parameters of the measurement see table 3 Each function has an identification number 1 t m 3 see figure below The user is able to identify the function where the sub result belongs to The identification number is displayed for a while only before the recalled results are displayed Identification number Earth resistance ae clamp 9 n Earthe resistance Send Data Send Data zag NS EA EA T NIEAF S struments 55 Earth resistance tester Figure 5 Identification number of each function NIEAFN Utrecht uystRumenrs Page 24 Ref 003 Procedure how to recall memorised results Pressed key Comments Recai The last changed partial code X X X of YYY used for the recalling of results is Result displayed Insert
23. scasacavssesssesssoassansia 5 1 1 Starting 5 2 TESTING 5 2 1 Test 1 Two point earth resistance measurement 5 2 2 Test 2 Three point earth resistance measurement 5 2 3 Test 3 Partial earth resistance UTILITY method 5 2 4 Test 4 Soil resistivity test Wenner method MEMORISING OF RESULTS RECALLING OF MEMORISED RESULTS 000000 RS232 COMMUNICATION ERASING OF RESULTS RESET OF THE INSTRUMENT TROUBLESHOOTING CALIBRATION AND REPAIR MAINTENANCE 6 1 BATTERIES REPLACEMENT 6 2 CLEANING ACCESSORY AND REPLACEABLE PARTS ss0000000 6 Z NIEAFN uystrumenrs Page 5 sobosuscedocsesussavasausseteoeussedeseussedesaussacessoadasusees sasusea 17 EET A E R A 24 Utrecht Ref 003 Tables Table 1 Pictograms on the tester Table 2 Switches Table 3 Save results in the memory Table 4 General faults and display messages Figures Figure 1 Three point earth resistance measurement Figure 2 Clamp system earth resistance measurement Figure 3 Soil resistivity measurement Figure 4 Operating Figure 5 Identification number of each function Figure 6 RS232 connector Figure 7 RS232 cable Figure 8 An example of print out Figure 9 Batteries inserted Figure 10 Test cords Attachments Attachment 1 EU Declaration of Conformity Attachment 2 Circuit diagrams Two point earth resistance measurement Three point earth resistance measurement Clamp system earth resistance measurement
24. st has it s specific circuit diagram which is given in the attachments Next measurements are executable by the instrument 1 A two point earth resistance measurement 2 A three point earth resistance measurement 3 A clamp system earth resistance measurement 4 A four point specific earth resistance measurement NIEAFN Utrecht uystrumenrs Page 9 Ref 003 2 2 SPECIFICATIONS General Power supply 4x 1 5 V IEC LR14 alkaline batteries Battery life time approx 2000 measurements 1 measurement per 5 minutes Display 3 digit 7 segement LCD 19 mm with additional warnings Quality standard design development and production according to ISO 9001 Mass approx 0 75 kg including batteries and accessories Dimensions wxhxd Environment and storage 110 x 65 x 290 mm Reference temp range 5 C 35 C Operating temp range 0 C 40 C Storage temp range 10 C 60 C Max operating humidity Max storage humidity Degree of protection Pollution degree Overvoltage protection 85 RH 0 C 40 C 80 RH 40 C 60 C 90 RH 10 C 40 C IP50 Class I Category I 300V Tested Three point earth resistance measurement 0 19 99 2 2 digits 20 0 199 9 2 2 digits 200 999 2 2 digits 1 00k 9 99k 5 10 0k 50 0k 5 Automatic range selection Measuring frequency 125 Hz 1 Hz For special frequency see backlabel Measuring voltage sinwave lt 50 VEfF Measuring current lt 20 mAgrr In
25. t to recall the saved results Save result to save the displayed measuring results T to increase decrease the object or measuring place identification number when 4 saving or recalling the results to check in the Recall Result function other results which have been saved later than the displayed one under the same object and measuring place identification number Clear memory to clear all saved results to clear all saved results under a certain object identification number without dots YYY to clear the saved results under a certain measuring place identification number only with dots XXX to clear in the Recall Result function the displayed result only to execute a RESET of the instrument Distance m to set the distance between the two rods 1 up to 20 m when measuring the earth resistance Display to select in the Save Result or in the Recall Result function the object identification number or measuring place identification number Earth resistance to measure the three and two point earth resistance and to measure the total earth resistance at a soil earth resistivity measurement Earth resistance to set the partial earth at a resistance soil earth resistivity measurement with clamp with clamp system Specific earth resistance Send Data RS232 position for specific earth resistance measurement transfer stored data to the printer or to the PC 5 1 1 Starting Operating the i
26. terference Interference voltage 5Vpp 50Hz at the potential input will have max effect of 15 dig Allowed current spike resistance Remax Allowed current spike resistance Remax that will introduce an additional up to 3 of reading error is as follows Remax 4kx 100Rg or Remax 50k whichever is lower NIEAFN Utrecht uystrumenrs Page 10 Ref 003 Allowed potential spike resistance Rpmax Allowed potential spike resistance Rpmax that will introduce an additional up to 3 of reading error is as follows Rpmax 4kx 100Rg or Rpmax 50k whichever is lower Figure 1 Three point earth resistance measurement Clamp system earth resistance measurement 0 5 19 9 5 2 digits 20 999 5 2 digits 1 00k 2 00k 5 2 digits Automatic range selector Clamp s inaccuracy must be additionally respected Measuring frequency 125 Hz 1 Hz See backlabel for special frequency Measuring voltage sinwave lt 50 Verr Measuring current lt 20 mAgrr Interference Interference voltage 5Vpp 50Hz at the potential input will have max effect of 15 digits NIEAFN Utrecht uystrumenrs Page 11 Ref 003 Figure 2 Clamp system earth resistance measurement TithtIs In Im Rr U Rror R1 R2 Ra Rn bL A1 U Im A2 Measurement of specific earth resistance Range A m Resolution m Accuracy A 2aR 0 19 99 2 2A
27. the desired code by using the tT keys if necessary JOJ oisprav t jl 4 Insert the desired code by using the ty keys if necessary Recall Confirm recalling pressing Recall Result key again Result J First the identification number of a function is displayed for a while and then the main result will be displayed n i Check the other results saved under the same object and measuring place code by using the tT H keys Form of the memory locations under a certain code X X X YYY Result 1 sub result Result 2 sub result Result n sub result For detail information about codes we refer to the user manual delivered with the PATS W Administration Software If one wishes to abandon the current procedure recalling the rotary switch must be turned Use the DISPLAY key to check the subresults too NIEAFN Utrecht uystrumenrs Page 25 Ref 003 5 5 RS232 COMMUNICATION 2 RX 3 Tx 5 GND Figure 6 RS232 connector Front View Front View ERFS male PANTERof FC female Figure 7 RS232 cable connect the printer or the PC to the ELT S using a RS232 cable which is supplied with the PATS W set all communication parameters at the PC by using the PATS W Administration Software that can be supplied by NIEAF SMITT upon separate order set the rotary switch of the ELT S to the RS232 position Pr E will be displayed press the START key i
28. your local dealer NIEAFN Utrecht uystrumenrs Page 31 Ref 003 6 MAINTENANCE Don t replace parts yourself but call technical qualified persons see paragraph 2 1 2 6 1 BATTERIES REPLACEMENT Exchange all four batteries If there are memorised results in the instrument and the BAT mark appears then transfer them to an extern printer or PC first The batteries have to be changed within one minute Disconnect all cables test cable or RS232 cable before removing the battery cover Caution possible live parts under the battery cover Throw after using the empty batteries in special the battery basket If the BAT mark appears at the display it means that the battery voltage is lower than 4 3 V Remove the old batteries and insert new ones Procedure batteries replacement 1 Disconnect all cables and cords and remove the battery cover 2 Remove the old batteries 3 Place the new batteries in the battery holder Always exchange all four batteries simultaneously Figure 9 Batteries inserted NIEAFN Utrecht uystrumenrs Page 32 Ref 003 Use the batteries declared in technical specification only If there is no chance to transfer the results extern printer or PC not available then follow the next procedure when changing batteries in order not to loose any stored data 1 Switch off the instrument 2 Remove the battery cover 3 Exchange the batteries within one minute 4

Gebruikershandleiding

Contents

Download Pdf Manuals

Related Search

Related Contents