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Accuracy level of tensile testing machine
Release time：2018-11-23 source：Jinan Hengsi Shanda Instrument Co., Ltd. Browse：
Tension testerAccording to the accuracy of the measured force, deformation value and other parameters, and the multiple technical indicators that the tensile tester performance can achieve, it can be divided into two accuracy levels: level 0.5 and level 1. The technical indicators of the accuracy level of the tensile tester are shown in Tables 1 to 5.
Table 1: Allowable error of force measurement system
Precision level | Allowed value % | ||||
Relative error of display value q | Relative error of display value repeatability b | Relative error of the value return journey v | Relative error of zero point F0 | Relative resolution a | |
0.5 | ±0.5 | 0.5 | ±0.75 | ±0.25 | 0.25 |
1 | ±1.0 | 1.0 | ±1.5 | ±0.5 | 0.5 |
Table 2: Allowed coaxiality values
Precision level | Coaxiality allowable value % |
0.5 | 12 |
1 | 15 |
Table 3: Relative Error of Crossbeam Movement Speed
Precision level | 0.5 | 1 |
Relative error of crossbeam movement speed % | ±0.5 | ±1 |
Table 4: Allowed drift value of force measurement system
Precision level | 0.5 | 1 |
Zero point drift % | ±0.5 | ±1 |
Table 5: Allowable errors of extensometer levels and extensometers
Extension meter Precision level | Allowed values | |||||
Relative error of gauge distance Qle % | Resolution a | Display value error a | Relative error of the value return journey μ % | |||
relatively re/li % | re µm | Relative error qe % | error li-lt µm | |||
0.5 | ±0.5 | 0.25 | 0.5 | ±0.5 | ±1.5 | ±0.75 |
1 | ±1.0 | 0.50 | 1.0 | ±1.0 | ±3.0 | ±1.5 |
Since the accuracy level representsTension testerThe overall performance of the tensile tester can be accurately and quickly understood through the accuracy level.
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