REED ST-156 Скачать руководство пользователя страница 14

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Pantone 534 Blue

Pantone 123 Yellow

Pantone 485 Red

Pantone 123 Yellow

Pantone 534 Blue

Black

Rich Black - 

20/20/20/100

Blue -  100/80/30/5

Yellow - 0/27/100/0

Red - 10/100/100/5

Yellow - 0/27/100/0

Blue -  100/80/30/5

Only if you REALLY need them:

Pantone 534 Blue -  100/80/30/5

Pantone 485 Red - 10/100/100/5

Pantone 123 Yellow - 0/27/100/

Shot-blasted Surfaces 

The physical nature of shot-blasted surfaces results in coating thickness 
readings that are too high. The mean thickness over the peaks can be 
determined as follows (not that the statistics program is of great benefit in 
this procedure). 

Method A:

 The meter should be calibrated according to One or Two-

point Calibration procedures. Use a smooth calibration sample 
with the same curvature radius and the same substrate as the later 
measuring sample. Now take approximately 10 readings on the 
uncoated, shot-blased sample to produce the mean value “Xo”. 
Then take approximately 10 readings on a coated, shot blasted test 
sample to produce the mean value “Xm”. The difference between 
the two mean values is the mean coating thickness “Xeff” over the 
peaks. The greater standard deviations of the two values “Xm” and 
“Xo” should also be taken into consideration: Xeff=(Xm-Xo)±S 

Method B

: Carry out a Zero-point Calibration of 10 readings on a 

shot-blased, uncoated sample. Then carry out a Foil Calibration 
on the uncoated substrate. The foil set should consist of a number 
of individual foils of max 50 microns thickness each, and should 
roughly correspond to the estimated coating thickness. The coating 
thickness can be read directly on the display and should be aver-
aged from 5-10 single measurements. The Statistics Function is 
useful here. 

Method C:

 This method also gives reliable results. Simply follow the 

Two-point Calibration method using two foils as described in the 
“Two-point Calibration” section. For a maximum approach to the 
respective nature of the surface, the foil value can be reached by 
using several foils, 50um each. The mean coating thickness should 
be calculated from 5-10 readings. The Statistics Function is very 
useful here. 

NOTE

: For coatings thicker than 300um, the influence of roughness 

 

generally is of no importance and it will not be necessary to apply  

 

above calibration methods.  

www.reedinstruments.com

1-877-849-2127 | [email protected]

 

Содержание ST-156

Страница 1: ...w com Model Black Pantone 534 Blue 100 80 30 5 Pantone 485 Red 10 100 100 5 Pantone 123 Yellow 0 27 100 Instruction Manual Ultrasonic Thickness Gauge ST 156 www reedinstruments com 1 877 849 2127 info reedinstruments com ...

Страница 2: ...ing 7 Unit Settings 7 Total Reset 8 Backlight 8 Statistic View 8 Measurement View 8 Auto Power Off 8 Direct and Group Mode 9 Calibration Methods 9 10 Storing Calibration Values 10 Calibration Example 10 High Accuracy Calibration 11 Cleaning the Measuring Point 11 Calibration Tips 11 Preparing for Calibration 11 Zero point Calibration 11 12 One point Calibration 12 13 Two point Calibration 13 Shot ...

Страница 3: ... measurement for non ferrous metal substrates One or two point calibration User settable high low alarms Easy Zero calibration Min Max and Average functions Memory stores up to 400 readings Easily delete single or group readings Auto Power off function Backlight Measurement Range 0 to 1250 µm 0 to 49 mils Specifications Working Temperature 0 C 40 C 32 F 104 F Working relative humidity 20 90 Power ...

Страница 4: ...m 1250um 5 0 33 46mils 3 0 039mils 33 46mils 49 21mils 5 0 850 um 3 1 5um 850um 1250um 5 0 33 46mils 3 0 059mils 33 46mils 49 21mils 5 Precision 0 50um 0 1um 50um 850um 1um 850um 1250um 0 01mm 0 1 968mils 0 001mils 1 968mils 33 46mils 0 01mils 33 46mils 49 21mils 0 1mils 0 50um 0 1um 50um 850um 1um 850um 1250um 0 01mm 0 1 968mils 0 001mils 1 968mils 33 46mils 0 01mils 33 46mils 49 21mils 0 1mils M...

Страница 5: ...er ON OFF Button 3 Zero Calibration Button 4 Down Right Button 5 Blue Bar Button 6 Main display 7 Measuring unit 8 NFe non ferrous Fe ferrous 9 Indicates the probe working principle AUTO Magnetic induction or Eddy current 10 Indicates that the meter is currently controlled via PC 11 USB connecting port 12 Low Battery Indicator 13 Working mode indication DIRECT or GROUP 14 Statistic display AVG MAX...

Страница 6: ...ed Bar Button to enter Menu The following illustrates how the Menu system is arranged Menu Statistic view Average view Minimum view Maximum view Number view Sdev view Options Measure mode Single mode Continuous mode Working mode Direct Group 1 Group 2 Group 3 Group 4 Used probe AUTO Fe No Fe Unit settings um mils mm Backlight ON OFF Continued under Options LCD Statistic Average Maximum Minimum Sde...

Страница 7: ...lly entered into the statistics program as long as sufficient memory is available Single Mode In Single Mode the probe is lifted off the surface being measured and moved Readings are accompanied by a beep All readings taken in this mode are automatically entered into the statistics program as long as sufficient memory is available Probe Operating The probe can work in three modes AUTO The probe ca...

Страница 8: ...Measuring Mode press the Blue Bar Button to switch the Back light ON or OFF You can change the Backlight default to ON or OFF in the Menu Statistic View While in the Menu choose Statistic View to toggle between Average Maximum Minimum and Standard Deviation functions Press the Red Bar Button to select the current Statistic View and to return to measurement mode A corresponding symbol of the Statis...

Страница 9: ...r memory groupings that can store a maxi mum of 80 single readings and 5 statistic values Calibration values and limit values can individually be set and stored for every group When the memory is full measuring will still continue but will not be stored and statistic values won t be changed You can delete group data and statistic values and reset the calibrate values and limit values When measurin...

Страница 10: ...An incorrect reading has been taken An incorrect command has been entered The meter has been switched off Calibration Example Calibration is the required for accurate measurements The more closely the calibration sample matches the product sample the more accurate the calibration and therefore the reading will be If for instance a product is to be measured on a steel cylinder quality ST37 mild ste...

Страница 11: ...of metal etc The slightest impurity will affect measurement and distort read ings Calibration Tips Basic Calibration should only be used for measurements on even sur faces i e on steel components made of conventional steel mild steel or on aluminum components First select Calibration Mode via the Menu Menu Calibration Enable The LCD screen will display Cal n or 1 2 Zero n or y The n means Not any ...

Страница 12: ... When full the newest calibration value will replace the oldest calibration value We suggest that you make a Zero Calibration when starting any measurement One point Calibration This method is recommended for high precision measurements measure ments on small parts and on hardened and low alloy steel 1 Zero point Calibrate according to the Zero point Calibration in structions 2 Lay the calibration...

Страница 13: ...rent foils a thin foil and a thicker foil about 1 5 times as thick as the thin one For best results the thickness to be expected should be some where between the two calibration values This method is suitable for taking measurements on rough shot blasted surfaces or for high precision readings It is recommended to take 5 measurements as to reduce the effect of scattering which occurs during calibr...

Страница 14: ...mean coating thickness Xeff over the peaks The greater standard deviations of the two values Xm and Xo should also be taken into consideration Xeff Xm Xo S Method B Carry out a Zero point Calibration of 10 readings on a shot blased uncoated sample Then carry out a Foil Calibration on the uncoated substrate The foil set should consist of a number of individual foils of max 50 microns thickness each...

Страница 15: ...mple Readings 150um 156um 153um Mean value X 153um Standard deviation s 3um Measuring uncertainty u 1 of reading 1um D 153 3 1 53um 1um 153 5 5um Limit Function Limits can be entered in Direct Mode and a selected Group memory at any time Any reading which falls outside the set tolerance limits will be registered by a warning indication H Reading above the HI limit L Reading below the LO limit The ...

Страница 16: ... deviation of a set of numbers is the root mean square of the variance S2 The variance of a list is the square of the standard deviation of the list that is the average of the squares of the deviations of the numbers in the list from their mean divided by the number of readings 1 Variance S2 Standard deviation S NOTE Deletion must take place immediately after an outlier or erratic reading has been...

Страница 17: ...n this function will delete High Alarm Low Alarm and One and Two point Calibration Values Meter Control via PC All measured readings of all work modes can be downloaded to PC via USB port for data analysis See software guide for more details Trouble Shooting The following list of error messages explains how to identify and eliminate faults Err1 Err2 Err3 Connecting of probe fault Deviant signal Er...

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