USING LOWER CLASS WEIGHTS TO CORRECT AND CHECK THE NONLINEARITY OF BALANCES |
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| Timothy Changlin Wang, Qihao Yuan, Arthur Reichmuth |
- Abstract:
- Any electronic balance has more or less nonlinearity. This paper presents a method to correct and check the nonlinearity by using two sets of lower class weights. Some of the key causes of the nonlinear error are described first. Common-meet parabola nonlinear pattern were studied in detail. A correcting procedure, using a set of lower class or even no class weights is then described. The correcting coefficient is given in the paper in an apparent form. Simulation and test results showed the nonlinear error reduced dramatically with the method. A check process is required before a balance goes to the market to test whether the final nonlinearity is within the tolerance. A check procedure, namely differential method, is presented. The method is accurate enough by using a second set of lower class weights. Low cost, high efficiency and good quality can be achieved in balance production by using the method presented.
- Download:
- IMEKO-TC3-2005-071u.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC3
- Event name:
- Force, Mass and Torque Measurements
- Title:
- Theory and Applications in Laboratories and Industry
- Place:
- Cairo, EGYPT
- Time:
- 19 February 2005 - 23 February 2005