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ElektroPhysik MiniTest 600, Operating Manual

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ElektroPhysik                                                                31

3.2.6 Adjusting the basic calibration

In certain cases it can be of assistance or even im-
perative to reset the standard probe calibration e.g.

   -

if the probe tips are worn

   -

for  special  applications.

On request, adjustment of the basic calibration can
be performed by the manufacturer, if necessary with
samples from the customer.

3.3

General remarks on measurement

After careful calibration has been made all subse-
quent measurements will lie within the guaranteed
measuring tolerance (see technical data).

Strong magnetic fields near generators or live rails
with strong currents can affect the reading.

When using the statistic program (not available when
using MiniTest 600 B) for obtaining a mean value it
is advisable to place the probe several times in the

General remarks on measurement

Summary of Contents for MiniTest 600

Page 1: ...Bedienungsanleitung MiniTest 600 Version 2 4 Englisch ...

Page 2: ...2 B10 N Subject to change without notice ElektroPhysik Dr Steingroever GmbH Co KG Pasteurstr 15 50735 Cologne Germany Tel 49 221 752040 Fax 49 221 7520467 web www elektrophysik com mail info elektrophysik com ...

Page 3: ...MiniTest 600 Technical Reference and Operating Manual Advancing with Technology ElektroPhysik ...

Page 4: ... 2 1 Checking the power supply 6 2 2 Replacing the batteries 7 2 3 Start up functions 8 2 3 1 Total reset 9 2 3 2 LCD segment test 9 2 4 Basic gauge settings 10 2 4 1 Switching between short term and long term modes 12 2 4 2 KEYLOCK Function for ZERO and CAL keys locks calibration keys 12 2 4 3 Activating deactivating the LC display light optional 13 2 4 4 Select a measuring unit metric inch imper...

Page 5: ...aning the measuring point 19 3 1 7 Acoustic signal 19 3 1 8 Stabilisation of calibration values 20 3 2 Points to remember when calibrating 20 3 2 1 Activate standard calibration 21 3 2 2 One point calibration without foil zero only 22 3 2 3 Two point calibration ZERO with one calibration foil 24 3 2 4 Calibration and measurement with MiniTest 600 FN 27 3 2 5 Calibration and measurement on shot bla...

Page 6: ...e capacity overflow 35 4 4 Display and print out of the 5 statistical values for a series of measurements no single value 35 5 Delete functions 36 5 1 Deleting the last reading taken 36 5 2 Deleting statistics 36 7 Interface description 37 8 Accessories 38 9 Maintenance 39 10 Customer service 39 11 Troubleshooting 39 12 Example of how to operate the MiniTest 600 41 13 Technical Data 45 ...

Page 7: ...iv ElektroPhysik Table of Contents 13 1 Technical data metric system 45 13 2 Technical Data imperial system 47 ...

Page 8: ... specialist advisers for paint shops and electroplaters for the chemical automobile shipbuilding and aircraft industries and for light and heavy engineering The range of applications is indicated by the probes available F probes work on the magnetic induction principle and should be used for non magnetic coatings such as aluminium chrome copper zinc paint and varnish enamel rubber etc on an iron o...

Page 9: ...sting brass etc FN probes work on a combination of the magnetic induction and the eddy current principle One probe only is required for coating measurement both on ferrous and non ferrous metal substrates When switched to automatic mode see 1 2 both principles are used for coating measurement the gauge version MiniTest 600 B is not equipped with an automatic mode to switch automatically between th...

Page 10: ...9 999 readings in one memory matrix for later statistical evaluation statistical evaluation is not possible with MiniTest 600 B Note MiniTest 600 FN is equipped with a manual as well as with an automatic mode The manual mode serves to activate either the magnetic induction principle F or the eddy current principle N by means of the arrow keys Owing to a special evaluation algorithm the correct coa...

Page 11: ...suitable for particular fields of application e g for measurement on special geometries After storage of the corresponding parameters the gauge automatically takes them into consideration The portable data printer MiniPrint 4100 allows immediate printing of measured values and subse quent printing of the 5 statistical values The data printer is connected to the MiniTest by means of a cable and is ...

Page 12: ...robe systems are spring mounted in the probe sleeve This ensures safe and stable positioning of the probe and even contact pressure A V groove in the sleeve of the probes facilitates reliable readings on small cylindrical parts The probe should be held by the spring mounted sleeve The hemispherical tip is made of hard and durable material Equipment and probe construction ...

Page 13: ... 1 2 volt rechargeable battery 2 Check battery condition by pressing ON no LC display battery missing or batteries charge too low to illuminate display no BAT display batteries is sufficiently charged flashing BAT display gauge switches itself off after about 1 sec replace batteries immediately Checking the power supply ...

Page 14: ...e will switch itself off after about a second Note Note that the gauge will not make faulty measurements even if the voltage is very low 2 2 Replacing the batteries 1 Place the gauge upside down on a suitable surface 2 Push the lid of the battery compartment in direction of the arrow and raise the lid of the compartment 3 Remove batteries 4 Insert new batteries 5 Replace the battery compartment li...

Page 15: ...moving the old batteries and inserting the new one will also result in the loss of data readings calibration values time and date 2 3 Start up functions The MiniTest 600 gauges include a number of functions that can only be called up or activated through start up of the gauge Function Key combination Total reset ZERO CLEAR ON LCD Test key ON Set gauge options ZERO ON Start up functions ...

Page 16: ...ress CLEAR ZERO and ON simultaneously Total reset is confirmed by a long bleep 2 3 2 LCD segment test The LCD segment test enables all sections of the LC display to be inspected and checked 1 Switch off the gauge 2 Hold down the ñ key press ON and keep both keys depressed As long as the arrow key is depressed all sections of the LC display will be shown Total reset and LCD segment test ...

Page 17: ...of numbers 1 0 or 1 1 Note If you are using a MiniTest 600 FN use the arrow keys to activate the F section ñ or the N section ò or wait 3 seconds until switching between sections is performed automatically 3 Press ZERO to move through each of the table s function from 1 to 4 Use the arrow keys to set the option 0 or 1 4 Press ZERO again to return to measuring mode Basic gauge settings ...

Page 18: ...asic gauge settings Zero key Arrow keys M odi setting 1 0 wwitch off m ode short term m ode 1 long termm ode 2 0 keylock m odefor ZER OCal off 1 keylock 3 0 displaylight option inactive 1 active 4 0 m easuring m ode m etric m m 1 im perial inch ...

Page 19: ... long term mode please refer to the table of gauge settings in section 2 4 Adjust to the new mode with the ZERO and arrow keys as described 2 4 2 KEYLOCK Function for ZERO and CAL keys locks calibration keys An accidental recalibration or unintentional offset input can be prevented by using the KEYLOCK function To activate the KEYLOCK function please refer to the table of gauge settings in section...

Page 20: ...ivate the display light please refer to the table of gauge settings in section 2 4 Select option with the ZERO and arrow keys as described 2 4 4 Select a measuring unit metric inch imperial Readings can be taken and displayed in metric and imperial units To switch from metric units µm mm cm to imperials mils inch or vice versa please refer to the table of gauge settings in section 2 4 Select optio...

Page 21: ...est 600 gauges Standard calibration recommended for even surfaces and for approximate measurements i e those that do not require the degree of accuracy of one point calibration One point calibration set zero without foil recommended when measuring errors up to 4 are permitted The given error range of the probe of 2 µm should also be taken into account Methods of calibration ...

Page 22: ...lues If the gauge is calibrated for a particular purpose the calibration values will be logged in memory until changed See also section 3 1 8 Stabilisation of calibration values If a calibration is to be altered using the same pro be simply carry out a new calibration This automatically deletes the previous calibration values and saves the new ones for immediate use Note If during the calibration ...

Page 23: ...e more closely the calibration sample matches the product sample the more accurate the calibration and therefore the reading will be Example If a product is to be measured on a steel cylinder quality ST37 mild steel with a diameter of 6 mm 0 24 the calibration of an uncoated sample must take place on a steel cylinder of similar quality with the same diameter The calibration sample must correspond ...

Page 24: ...ion sample must always be identical with the point of measurement on the product itself especially in the case of corners and edges of small components The precision stand proves invaluable here 3 1 4 The effects of substrate thickness In the case of steel substrates the thickness is of no consequence as long as it is greater than the general measuring range of the probe in use In the case of non ...

Page 25: ... Exceptions The zero plates may be used for calibration if the product sample has a smooth even surface not shot blasted and if steel parts are thicker than 1 mm 40 mils In this case the zero plate may be used for calibration by laying it on the coated sample if aluminium parts are thicker than 50 µm 2 mils In this case the enclosed aluminium plate may be used for calibration Thin layers of alumin...

Page 26: ... 4 on calibration This method is an obvious advantage when calibrating on uneven e g shot blasted surfaces 3 1 6 Cleaning the measuring point Before calibration the measuring point and the pro be tip must be free from grease oil scraps of metal etc The slightest impurity will affect measurement and distort readings 3 1 7 Acoustic signal Whether the probe is being used for calibration or for measur...

Page 27: ...brating When calibrating according to sections 3 2 2 to 3 2 3 the basic procedure is always as follows 1 Start calibration by pressing the appropriate calibration key ZERO or CAL 2 Apply the probe to calibration foil several times 3 If necessary adjust the value shown on the LC display to the calibration foil value by means of the arrow keys 4 End calibration by pressing the calibration key again ...

Page 28: ... the gauge should only be used for measurements on even surfaces i e a on steel components made of conventional construction steel mild steel b on aluminium components and other non ferrous metals e g copper zinc brass etc Note It is important to record a sufficient number of exact zero readings on an uncoated sample If not one point or two point calibration should be used Activate standard calibr...

Page 29: ...adings will be shown on the display 2 Place the probe on the uncoated sample zero coating thickness and raise it after the bleep Place the probe on the uncoated sample several times The display always shows the mean value of the previous readings To discontinue ZERO calibration press CLEAR 3 Press ZERO to end zero calibration The word ZERO will appear on the display steady One point calibratoin wi...

Page 30: ...o delete the ZERO calibration if for example an incorrect zero value is entered In this case a press ZERO and then CLEAR to delete the zero calibration and any existing CAL calibration Note This will reactivate the default standard calibration for use on even surfaces ZERO calibration deletes an already existing CAL calibration One point calibration without foil ...

Page 31: ...alise ZERO calibration The display will show ZERO flashing and MEAN steady MEAN indicates that the mean value of the readings will be shown on the display 2 Place the probe on an uncoated sample zero coating thickness and raise it after the bleep Place the probe on the uncoated sample several times The display always shows the mean value of the previous readings To discontinue ZERO calibration pre...

Page 32: ...ndicates that the mean value of the readings will be shown on the display 5 Lay the calibration foil on an uncoated sample place the probe on the foil and raise it after the bleep The thickness of the foil should be roughly equivalent to the estimated coating thickness Place the probe several times on the test sample sThe display always shows the mean value of the previous readings Two point calib...

Page 33: ...ckness of the foil with the arrow keys 7 Press CAL to end CAL calibration CAL will appear on the display steady 8 Now take readings by placing the probe on the unknown coating and by raising it after the bleep 9 It may be necessary to delete the CAL calibration if for example an incorrect calibration is entered In this case a Press CAL then CLEAR to delete the CAL calibration and any existing ZERO...

Page 34: ... the ZERO calibration remains in memory 3 2 4 Calibration and measurement with MiniTest 600 FN The universal probe of MiniTest 600 FN uses both the magnetic induction measuring range 0 3mm 0 0 12 and the eddy current principle measuring range 0 2 mm 0 0 08 To select the measuring method press ON The word FERROUS will flash on screen Press the ñ key to select FERROUS i e the magnetic induction meth...

Page 35: ...the uncoated substrate The display will then show FERR or NON FERR For calibration and measurement proceed as nor mal according to either 3 2 2 or 3 2 3 or 3 2 5 For alternating measurements on steel and non ferrous substrates calibration must be performed on uncoated samples of both substrates Measurements can then be carried out immediately 3 2 5 Calibration and measurement on shot blasted surfa...

Page 36: ...n 20 µm 0 8 mils 1 The gauge should be calibrated according to the method described in 3 2 2 or 3 2 3 Use a smooth surface with the same curvature radius and the same substrate 2 Now take approx 10 readings on the uncoated shot blasted surface to obtain the mean Xo 3 Subsequently take approx 10 further readings on the coated and similarly shot blasted test sample to produce the mean value Xm Measu...

Page 37: ...t a zero calibration of 10 readings on a shot blasted uncoated substrate Then calibrate with a foil on the uncoated substrate The foil set should consist of a number of individual foils of max 50 µm 2 mils thickness each and should roughly correspond to the estimated coating thickness The coating thickness can be read directly and should be averaged from 5 10 single measurements The statistics fun...

Page 38: ... necessary with samples from the customer 3 3 General remarks on measurement After careful calibration has been made all subse quent measurements will lie within the guaranteed measuring tolerance see technical data Strong magnetic fields near generators or live rails with strong currents can affect the reading When using the statistic program not available when using MiniTest 600 B for obtaining ...

Page 39: ...s The MiniTest 600 can calculate statistics from a series of stored measurements max 9 999 readings The statistical values can be printed out without a list of corresponding single values see 4 5 Single values can only be printed out directly during measurement This program automatically stores and evaluates the readings of a series The analysis of any one series appears on the display and on the ...

Page 40: ...ngle values are required to obtain a statistical analysis which consists of the 5 values listed above 4 1 Definition of statistical values Mean x The mean is the sum of the single values divided by the number of readings MEAN x x n Standard deviation s STD DEV The standard deviation measures the scattering of readings The greater the Definition of statistical values ...

Page 41: ...e arithmetical mean squared then divided by the number of measured values minus 1 scattering s x x n 2 2 1 standard deviation s s 2 4 2 Entering a series of measurements for statistical analysis 1 The gauge can be used for measurements immediately after it is switched on All readings will be automatically logged to the statistics program Statistical analysis of a series of measurements ...

Page 42: ...AR 4 3 Storage capacity overflow If the storage capacity more than 9 999 values is exceeded the 5 statistical values will not be updated although measurement can continue Subsequent readings will be marked with the error message E11 4 4 Display and print out of the 5 statistical values for a series of measurements no single value Each time STATS is pressed the statistical values will appear in the...

Page 43: ... functions 5 1 Deleting the last reading taken Press the CLEAR pad once immediately after a reading has been taken A short bleep confirms that the reading has been deleted 5 2 Deleting statistics Press STATS and CLEAR A short bleep confirms that the reading has been deleted For MiniTest 600 FN the statistics of the F part and the N part are deleted separately The desired measuring procedure in aut...

Page 44: ... off the MiniTest 600 FN and activate the F probe or N probe by means of the arrow keys when switching the gauge on again Press STATS and CLEAR A short bleep confirms that the statistics for the selected measuring principle have been deleted 7 Interface description The gauge MiniTest 600 can be connected to a PC with a uni directional RS232C interface An RS232 interface connection cable is necessa...

Page 45: ...carrying case Clear view cover for protection against mechanical damage MiniPrint 4100 portable data printer Connecting cable MiniTest PC Cable to connect MiniTest 600 to MiniPrint 4100 portable printer Precision stand for high precision readings and measurements on small components Accessories Maintenance and cu ...

Page 46: ...ries must be removed from the gauge without delay 10 Customer service Please send a damaged or defective gauge to us directly or forward it via your dealer We should be grateful if you could enclose a brief description of the fault 11 Troubleshooting The following list of error messages explains how to identify and eliminate faults E E error Maintenance and customer service ...

Page 47: ...g as a result of strong fluctuations in the magnetic field or readings taken on soft coatings E 5 Probe was held too close to metal when switched on E 6 Battery voltage too low Error messages displayed for about 1 5 sec E 11 Memory full If faults occur without an error message appearing e g the gauge does not switch itself off automatically readings are no longer registered Troubleshooting ...

Page 48: ...st remedy is a total reset 12 Example of how to operate the MiniTest 600 Gauges available MiniTest 600 F MiniTest 600 N MiniTest 600 FN also required steel or aluminium zero plate 1 Press ON According to probe type the display will show FERROUS or NON FERROUS and µm or mils Operating example ...

Page 49: ...Press ñ for measurements on steel Ferr Press ò for measurements on non ferrous metals Non Ferr If necessary switch off the gauge and start again After 3 sec the gauge automatically switches to automatic mode i e after corresponding calibration the gauge measures the right coating thickness on steel as well as on non ferrous metals 2 Press ZERO ZERO flashes on the display Operating example ...

Page 50: ...he steel or aluminium standard 4 Press ZERO The display will show ZERO 5 Now start measurement E g take a calibration foil lay it on the zero plate and place the probe on it several times The gauge will now display the calibration foil thickness taking into account gauge tolerances For increased accuracy calibrate again with one of the calibration foils Operating example ...

Page 51: ...ply the probe several times 8 Adjust to the thickness of the foil with the arrow keys 9 Press CAL The display will show ZERO and CAL and µm or mils For further details please look up the point you wish to clarify by referring to the Contents at the front or the Index at the back of the operating instructions Operating example ...

Page 52: ...00 F for steel substrates 600 FN for steel and NE metal substrates 600 N for NE metal substrates Principle magnet inductive eddy current Measuring range 0 3 mm 0 3 mm F 0 2 mm N 0 2 mm Low range resolution 0 2 mm Guaranteed tolerance level 2 µm 2 of the reading Min radius of curvature 5 mm convex 25 mm concave ...

Page 53: ... mm F 0 5 mm N 50 µm 50 µm Probe dimensions 150 mm diameter x 62 mm Power supply 2 x 1 5 V alkaline mignon batteries NiMh accumulator batteries LR6 AA Industrial standards DIN 50981 50984 ISO 2178 2360 BS 5411 ASTM B499 B244 Ambient temperature gauge 0 50 C Ambient temperature probe 10 70 C Dimensions 115 mm x 64 mm x 25 mm Weight 270 g ...

Page 54: ...ates 600 FN for steel and NE metal substrates 600 N for NE metal substrates Principle magnet inductive eddy current Measuring range 0 120 mils 0 120 mils F 0 80 mils N 0 80 mils Low range resolution 0 02 mils Guaranteed tolerance level 0 08 mils 2 of the reading Min radius of curvature 0 2 inch convex 1 2 inch concave ...

Page 55: ... F 20 mils N 2 mils 2 mils Probe dimensions 150 mm diameter x 62 mm Power supply 2 x 1 5 V alkaline mignon batteries NiMh accumulator batteries LR6 AA Industrial standards DIN 50981 50984 ISO 2178 2360 BS 5411 ASTM B499 B244 Ambient temperature gauge 32 122 F Ambient temperature probe 14 158 F Dimensions 4 53 inch x 2 5 inch x 0 98 inch Weight 9 5 ozs ...

Page 56: ...6 B Basic gauge settings 10 Battery condition 6 C Calibration 14 Calibration foil 25 Calibration values 15 19 Connecting cable 38 Contact pressure 5 Cylindrical parts 5 D Default calibration 27 Defective gauges 39 Delete functions 36 Display light 13 Index ...

Page 57: ...current principle 2 3 27 Error messages 39 Example 41 G Geometry 4 I Imperial system 47 Imperial unit 13 Insulating coatings 2 Interface 37 K Keylock function 12 L LC display 3 13 LCD segment test 9 Long term mode 12 Index ...

Page 58: ... 27 Maintenance 39 Manual mode 3 Mean 33 Measuring unit 13 Memory 40 Metric system 45 Metric unit 13 MiniPrint portable data printer 4 O One point calibration 14 22 P Point of measurement 17 Power supply 6 Precision stand 17 Pressure 18 Probe 1 Probe tip 5 18 19 31 Index ...

Page 59: ...ode 12 Shot blasted surfaces 19 28 Spring mounted sleeve 5 Standard calibration 14 21 Standard deviation 33 Statistical analysis 34 Statistical values 32 Storage capacity 35 Substrate thickness 17 T Table of basic settings 11 Table of start up functions 8 Technical data 45 Total reset 9 41 Two point calibration 15 24 Index ...

Page 60: ...ElektroPhysik V V groove 5 Z Zero calibration 22 30 Index ...

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