What is the difference of accuracy of a tool stated at Full Scale/Range versus Reading/Setting?
ACCURACY OF A TOOL- Deviation of acceptable limits of a specified standard or tolerance
1. Full Scale/Range-Maximum Deviation is determined by multiplying the maximum reading by the stated full-scale accuracy
2. Reading/Setting-Maximum Deviation is determined by multiplying the reading or setting by the stated accuracy
Full Scale/Range - Testing of a tool with a range of 10-100
If a torque wrench has a maximum range of 100 with a repeatability of +-5%, an acceptable tolerance range would be 95-105. Using the same tool at 10 an acceptable tolerance range would be 5-15.
Maximum Range multiplied by Stated Full Accuracy
10-100 +- 5% of Full Scale/Range
PTT
Torque & Angle Analyzer
Acceptable Tolerance | Preset | Acceptable Tolerance |
95 | 100 |
105 |
45 | 50 | 55 |
5 | 10 | 15 |
Reading/Setting - Testing of a tool with a range of 10-100 lbf.in
If a torque
wrench has a maximum range of 100 with a repeatability of +-5%, an acceptable tolerance range would be 95-100. Using the same tool at 10, an acceptable tolerance range would be 9.5-10.5.
Reading/Setting multiplied by Stated Full Accuracy
10-100 +-5% of reading/setting
Acceptable Tolerance | Preset | Acceptable Tolerance |
95 | 100 | 105 |
47.5 | 50 | 52.5 |
9.5 | 10 | 10.5 |
TLS
Torque Screwdrivers
