PosiTector 200 Non destructive thickness measurement Gage

Significance and Precision

PosiTector 200-Introduction

PosiTector 200 used for Non destructive thickness measurement of one or more layered dry surfaces in microns /Mils.

This Instrument work on Ultrasonic waves due to variation in density on interfaces.

The standard test method is described in ASTM D6132-04. “Standard Test Method for Nondestructive Measurement of Dry Film Thickness of Applied Organic Coatings Using an Ultrasonic Gage” (2004, ASTM).

Dual Layer Measurement

Graphics option of Instrument accessed using the “Set Range” menu.

Narrow and high peaks denotes major change in density and uniform

Wide and low peaks indicate –Blended/Composite materials where density is gradually change

Positector 200 use highest peaks as a thickness results in selected range in case of multilayer it uses two or three higher peaks for out put.

The nature of composition of a composite can be understood easily by Graphical representation.

Precision Analysis

Precision Values in Microns

Count WCP-1 WCP-2 WCP-3 WCP-4 WCP-51 1127 1236 1204 1334 11962 1177 1310 1347 1316 10793 1221 1207 1210 1309 10854 1209 1289 1332 1318 10975 1209 1074 1317 1310 1214

6 1217 1192 1338 1317 13347 1212 1312 1312 1317 12108 1212 1078 1214 1313 12049 1208 1313 1340 1317 1328

10 1210 1192 1340 1317 1345

11 1207 1199 1338 1313 121112 1206 1172 1330 1327 121013 1093 1309 1324 1321 121014 1212 1088 1222 1320 133415 1213 1089 1327 1192 1210

16 1201 1073 1322 1323 121017 1088 1200 1205 1316 121318 1094 1311 1324 1318 132719 1206 1195 1214 1203 121120 1222 1201 1328 1320 1334

           

Min 1088 1073 1204 1192 1079Max 1222 1313 1347 1334 1345

Mean 1182 1196 1290 1301 1221Std. Dev. 46 87 56 38 83

Precision Trend on different Samples

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 201000

1050

1100

1150

1200

1250

1300

1350

1400

Instrument Precision Analysis on 5 Samples and 20 Readings on

each Sample

WCP-1 WCP-2 WCP-3 WCP-4 WCP-5

Random Analysis

Random Values in Microns

Count WCP-1 WCP-2 WCP-3 WCP-4 WCP-51 911 1384 1367 903 7022 1020 1075 1451 1055 8273 1148 1047 1077 943 8344 1051 1068 1097 1283 9175 1039 949 1321 1192 834

6 1151 888 957 946 9557 1279 926 1209 1067 8418 1037 1163 1112 937 9679 1190 574 944 1057 971

10 1072 1053 1079 1057 1090

11 1198 1175 603 1199 106112 1186 957 952 1069 96913 1204 1186 1161 1058 95914 1328 968 1101 937 107115 988 1297 1447 946 962

16 844 1163 1338 1056 96217 1083 937 1223 1048 131718 967 1276 1334 1198 97519 975 921 1374 1367 96720 1150 1067 989 1061 1090

           

Min 844 574 603 937 827

Max 1328 1297 1451 1367 1317Mean 1099 1027 1134 1085 986

Std. Dev. 124 179 211 124 129

Random Values Trend on different Samples

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20550600650700750800850900950

10001050110011501200125013001350140014501500

Random DFT Analysis of 5 Samples, 20 counts per sample

WCP-1 WCP-2 WCP-3 WCP-4 WCP-5

Sample-1 Precision V/s Random

Sample-1 Precision

Min Max Mean Std Dev1088 1222 1181 50.7

Sample-1 Random

Min Max Mean Std Dev844 1328 1087 126

Sample-2 Precision V/s Random

Sample-2 Precision

Min Max Mean Std Dev1067 1313 1196 85.5

Sample-2 Random

Min Max Mean Std Dev574 1384 1053 179

Sample-3 Precision V/s Random

Sample-3 Precision

Min Max Mean Std Dev1105 1347 1281 71.4

Sample-3 Random

Min Max Mean Std Dev603 1451 1148 205

Sample-4 Precision V/s Random

Sample-4 Precision

Min Max Mean Std Dev1192 1334 1306 37.6

Sample-4 Random

Min Max Mean Std Dev903 1367 1068 124

Sample-5 Precision V/s Random

Sample-5 Random

Min Max Mean Std Dev702 1317 964 129

Sample-5 Precision

Min Max Mean Std Dev973 1345 1197 83

Precision V/S Random

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20550

650

750

850

950

1050

1150

1250

1350

1450

WCP-1P WCP-2P WCP-3P WCP-4P WCP-5P WCP-1R WCP-2R WCP-3R WCP-4R WCP-5R

Case Studies-1Measurable Thickness with appropriate Couplant-Single layer Measurable Thickness with appropriate

Couplant-Double layer

Case Study-2Non-measurable Thickness/Insufficient Couplant-Single layer

Non-measurable Thickness/Insufficient Couplant-Double layer

Case Study-3Non-measurable Thickness/Insufficient Couplant-Double layer

Non-measurable Thickness/Insufficient Couplant-Double layer