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INSTRUKCJA USERS MANUAL CAR BODY TESTER MG

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									                                                  USERS MANUAL
                                              CAR BODY TESTER MG-101
   THE FIRM OFFERS ALSO


             pH- meters

             ion-meters

           thermometers

       conductivity meters

    oxygen meters for water

          humidity meters

         thickness gauges


portable, for lab and industrial use



                                  

      41-814 ZABRZE ul. W. Witosa 10
tel. +48 32 273 81 06, fax +48 32 273 81 14
        www.elmetron.com.pl
              Poland
                                                                
                    Read before use !




Picture 1. View of the tester with measuring head.
1 - body,
2 – head with movable thickness probe,
3 – nut connecting the head with the body,
4 – top closes the battery box,
a, b, c – location of the sealing rings.
   The MG-101 tester enables measurements of              CAR                   Year   Thickness Tester
lacquer coating on cars. Basing on this measurements                                      (m)
                                                          Skoda Felicja.         97      92  126 150 m
it is possible to state whether the car body was
                                                          Skoda Forman           93      90  126  150 m
repaired, how big were the damages and how the            Toyota Avensis         98     111  116  150 m
repairs were made.                                        Toyota Carina II       98      80  112  150 m
The tester is a new generation meter calibrated in m     Toyota Corolla         91     101  115  150 m
(1 m = 1/1000 mm).This innovation differentiates the     Toyota Corolla         99      93  115  150 m
MG-101 from testers offered on the market. The            Toyota Hillux          96      98  142  150 m
accuracy of the measurement is not much worse than        Toyota Yaris           99      99  144  150 m
in 10 times more expensive thickness gauges and has       Volkswagen Bora        99     108  137  150 m
                                                          Volkswagen Golf III    97     104  138  150 m
this same practical usability. The simplified skill of    Volkswagen Golf IV     99     107  129  150 m
thickness makes determining, whether the lacquer          Volkswagen Jetta       92      80  118  150 m
coating on the car is a standard one or maybe it has      Volkswagen Passat      95      96  104  150 m
middle thickness or is very thick, very easy. Thanks to   Volkswagen Passat      99     120  156 > 150 m
it we can define whether some more serious repairs        Volkswagen Polo        99     127  155 > 150 m
were made on the car body, or a second layer of the       Volkswagen Transp.     99     105  118  150 m
lacquer was laid on the original one. Nevertheless in     Volvo 760.             96     123  137  150 m
this case sometimes it is hard to get unambiguous
results. Information included in the chapter 4 clears
this situation. If some parts of the car body were
changed for new ones and they were correctly painted
the tester won’t detect this kind of repair
Microcontroller used in this tester ensures high
accuracy of the measurement, during which the
thickness of the layer (nonmagnetic) between the
measuring head and the metal surface is checked
The meter was carefully checked and calibrated on
the typical metal of which the car body is made,
because the kind of the metal has a great influence on
the result.
CAR                   Year   Thickness      Tester     Depending on the chemical processing and
                                 (m)                  composition of this metal some differences in
Opel Corsa            99      111 131       150 m
                                                       measurements of this same lacquer coating may be
Opel Frontiera                  121 132     150 m
Opel Kadet            90         91 124     150 m
                                                       observed. The meter calibrated by the producer on
Opel Omega            91        129 142     150 m   one kind of the metal sheet on the other may show
Opel Vectra           94         84 134     150 m   some small errors. But practically it doesn’t have any
Opel Vectra           99       115  133     150 m   influence on the evaluation of the car.
Peugeot 306           96       117  143     150 m   However very important is proper carrying out of
Polonez Atu +         97        95  143     150 m   the measurements and correct interpretation of
Polonez Caro          96        82  108     150 m   the results, in which careful reading of this
Renault Clio          99       145  164    > 150 m   manual may be very useful.
Renault Kangoo        99       130  154    > 150 m
Renault Laguna        99        93  150     150 m
Renault Megane        99       108  167    > 150 m
                                                           1. SWITCHING THE TESTER ON AND OFF
Renault Scenic        99       104  134     150 m
Renault Twingo        99       122  137     150 m   After switching the tester on using the ON/OFF switch
Honda Accord          99         99  116    150 m   all LED’s will be on for a short time. It is a test which
Honda Civic           99         97  137    150 m   lasts about 0,5 sec. After 2 seconds LED 1000 m
Hyundai Lantra        97       110  131     150 m   starts blinking informing that the meter is ready to
Hyundai SCoupe        93         98  115    150 m   work. The MG 101 is switched off by pressing the
Hyundai Sonata        93       109  117     150 m
                                                       ON/OFF button, it is also signalised by short lighting of
Lexus LS300                    130  158    > 150 m
Mercedes kl „A”       99         83  99     150 m
                                                       all LED’s. If the meter wasn’t switched off, the auto off
Mercedes kl „C”       99        86  106     150 m   function switches it off after five minutes of non-use.
Mercedes kl „E”       99        87  100     150 m
Mercedes kl „S”       99        87  100     150 m                    2. MEASUREMENT
Mercedes „Sprinter”   99        83  106     150 m
Mercedes 300 D        86      124  139      150 m   To start the measurement it is necessary to take the
Rower 400             99       122  150     150 m   protective cap off the head. The tester must be lightly
Seat Alhambra         99      115  142      150 m
                                                       pressed perpendicularly to the measured surface, the
Seat Cordoba          99      114  132      150 m
Seat Ibiza            99      125  140      150 m
                                                       probe will move back a bit. It is important to pay
Seat Toledo           99      135  156     > 150 m   attention that the head will stick to the measured
Skoda Favorit         94     ! 169  215    > 200 m   surface with whole border. After about 5 seconds the
Skoda Favorit         94      135  147      150 m   meter will show the final result, because not always the
Skoda Felicja comb.   97      113  170     > 150 m   range of thickness is correctly defined. During
measurements of rounded parts of the car body the          8. RESULTS OF OWN MEASUREMENTS
meter should be held on the extension of radius of this
                                                          CAR                  YEAR   Thickness      Tester
curvature. But such a measurement is more difficult                                       (m)
and bigger error may occur.                               Alfa Romeo 145                114  135    150 m
                                                          Audi 80                        89  122    150 m
     3. INTERPRETATION OF THE READINGS                    BMW series 3 „old”    93      100  117    150 m
                                                          BMW series 3 „new”    99      116  136    150 m
The MG-101 tester has a 3 red LED indicator and it        BMW series 5 „new”    96      102  118    150 m
shows one of the 6 thickness ranges. Lighting of one      BMW series 5 „new”    99    ! 106  314   > 200 m
                                                          Citroen BX            86      114  120    150 m
LED shows that the varnish in this place is thicker       Daewoo Espero         96       99  114    150 m
than the value showed on the scale indicated by this      Daewoo Lanos          98      105  132    150 m
LED. Simultaneous lighting of 2 LED’s informs that the    Daewoo Matiz          99       95  119    150 m
measured value is bigger than the value on the scale      Daewoo Nexia          96       93  105    150 m
placed between this LED’s. The user may also draw a       Daewoo Nubira         99       99  115    150 m
conclusion to which measuring range the measured          Daewoo Tico           98       97  116    150 m
value belongs. The table placed below informs how to      Fiat 126p                      86 115     150 m
interpret lighting of the LED’s.                          Fiat Marea Weekend    98      101  128    150 m
                                                          Fiat Seicento         99      110  135    150 m
                                                          Fiat Siena            98      123  143    150 m
          LED                       THICKNESS             Fiat Tipo                     107  123    150 m
    blinking                                              Fiat UNO              91      103  122    150 m
150 m   ☼○○ 1000 m          less than 150 m            Ford Aerostar         95      145  165   > 150 m
                                                          Ford Escort           91       97  124    150 m
150 m   ☼○○        1000 m   Above. 150 m  200 m
                                                          Ford Escort           93       85  107    150 m
150 m   ☼☼○        1000 m   Above. 200 m  350 m      Ford Fiesta           98       91  118    150 m
                                                          Ford KA               96       99  128    150 m
150 m   ○☼○        1000 m   Above. 350 m  500 m      Ford Mondeo           94      109  132    150 m
                              Above. 500 m  1000m      Ford Probe            96      112  132    150 m
150 m   ○☼☼        1000 m                               Ford Sierra           89      106  130    150 m
150 m   ○○☼        1000 m   Above. 1000m  1200m      Ford Windstar         95      130  160   >150 m
         blinking                                         Mazda MX3             94       85  110    150 m
                              Above. 1200m or lack of
                                                          Nissan Almera         99       76  102    150 m
150 m   ○○☼        1000 m   measurement
                                                          Nissan Micra          99       82  102    150 m
☼ - the lighting LED                                      Nissan Primera        99       80  101    150 m
                                                                                       113  136     150 m
○ - not lighting LED                                      Opel Astra Clasic
                                                          Opel Astra II
                                                                                99
                                                                                99     150  193    > 150 m
remove the three used batteries and replace them               4. PRINCIPLES OF CAR BODY TESTING
with the new ones (type LR44, 1,5V).
During changing the batteries it is necessary to          Basing on the studies led on the new and used cars,
pay attention weather the tape is placed correctly        also repaired ones, one may draw a conclusion, which
under the batteries. and the batteries were               is given in the table.
inserted in the right direction according to the
marks. All batteries have to be placed with the             Indication                    Conclusion
correct side in this same direction (+ or -) The – sign     abv. 1000 m   Very thick layer – car badly repaired
must be on the side of flat spring and the + on the         abv.. 500 m   Thick and middle layer of filler – repaired
side of spiral spring. Wrong placing of the batteries       abv. 350 m    Thin layer of filler – repaired
                                                            abv. 200 m    Probably painted for the second time (?)
may destroy the meter. The picture given below will
                                                            abv. 150 m    Probably small repairs of the varnish (?)
make the inserting of the batteries easier                  below 150 m   One coating of the varnish

                                                          Unfortunately not in all situations everything is
                                                          completely clear. To measuring thickness on car
Picture 3. Position of the batteries.                     which was repaired with filler after crash is easy, and
                                                          shouldn’t make any troubles. It is much harder to get
The easiest way to insert the batteries is to slip them   the information weather the car body was painted for
starting from the side of flat spring, and pressing       the second time. It is easier to answer this question
them on the spiral spring. At the end it is very          when one know how thick is the original coating of the
important to remember about correct screwing the          varnish on new car.. Included table with thickness of
top.                                                      varnish on some cars which were not painted or
                                                          repaired, may be helpful during the measurements.
                 7. TECHNICAL DATA                        From our experience we know that over 95% of all
                                                          cars have varnish layers not thicker than 130 m.
       ACCURACY               Not worse than 5 %          About 4% of cars have varnish layers about 150 m,
       POWER                  Batteries LR44 – x 3
                                                          but about 1% have lacquer coating thicker than
       WORK TIME                      30 h
       WEIGHT                         75 g                150 m. Different cars have different thickness of
       DIMENSIONS            L = 143 mm ,  26 mm         original varnish, also in this same car the thickness of
                                                          varnish may be different on different body parts. One
                                                          may assume that blinking LED 150 m informs, that in
                                                          place of measurement there is only one varnish
                                                          coating. If on the bigger part of the body the thickness
is above 150 m up to 200 m (LED 150 m lights,          shadow, because the reading of result may be little bit
without blinking), one may assume that the whole car      harder.
body or it’s part was painted for the second time         The meter is fully waterproof and was checked by the
without making any serious repairs. In case when this     producer. The tightness is ensured by three sealing
situation appears it is a signal to take a closer and     rings, described on the picture. before screwing it is
more careful look to find places with thicker layers      necessary to check whether the rings are on the right
made during more serious repairs. The above given         place, and then to screw the meter correctly. If the nut
advice is not real for all cars, because in some of       and top won’t be screwed tightly the meter will be
them the original varnish layer is thicker than 150 m,   flooded, and damaged. This type of damage is not
for example in OPEL ASTRA II, in which the varnish        covered by the warranty. The measuring head is not
has up to 190 m. The meter will show then the value      waterproof, if the meter will be totally immersed in
above 150 m, although the car wasn’t painted or          water one shouldn’t turn the meter on before it won’t
repaired. There are also situations that in the factory   be totally dry. Continuos lighting of one of the LED’s
some parts are painted for the second time, and the       indicates that the calibration values were lost, or the
new car is above the norm (sometimes the varnish          meter is damaged. In this situation the meter should
coating is two times thicker). Such accidents are very    be returned to the service. The housing of the meter
                                                                                                0
rare but we have noticed them in few cars.                isn’t high temperature (above 150 C) and solvents
There is no connection between the varnish thickness      resistant.
and it’s quality, in some new cars like Mercedes the
thickness of varnish is about 100 m.                               6. CHANGING THE BATTERIES
In some cars some body elements are made of plastic
(like front fenders in Mercedes class A or in Renault     The information about the necessity of battery
Scenic) in this situation the meter won’t show the        changing is continuos lighting of all LED’s, on turns
lacquer thickness and the LED 1000 m will blink. It is   with the measured value. To change the batteries it is
important to remember that the meter measures only        necessary to unscrew the top of the meter and than
on metal surfaces.                                        pull the tape,

                    5. REMARKS

Although the LED’s used in this tester are with
increased brightness, using the tester in strong sun
light is connected with necessity of making some

								
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