Design of Electronic Mass Balance of Gram Scale Using a Gage Strain Sensor

Muhammad Priyono Tri Sulistyanto; Kurriawan Budi Pranata; Endarko Endarko; Melania Suweni Muntini

doi:10.22146/ijitee.31957

Design of Electronic Mass Balance of Gram Scale Using a Gage Strain Sensor

https://doi.org/10.22146/ijitee.31957

Muhammad Priyono Tri Sulistyanto^(1*), Kurriawan Budi Pranata⁽²⁾, Endarko Endarko⁽³⁾, Melania Suweni Muntini⁽⁴⁾

(1) Program Studi Teknik Informatika, Universitas Kanjuruhan Malang
(2) Program Studi Pendidikan Fisika, Universitas Kanjuruhan Malang
(3) Program Studi Ilmu Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Sepuluh Nopember
(4) Program Studi Ilmu Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Sepuluh Nopember
(*) Corresponding Author

Abstract

This research is conducted by utilizing strain gage uniaxial sensor with internal resistance 120 ohms and brass cantilever beam that is to build electronic mass scale in gram level. Basically, the aim of this research is to study deflect phenomenon measured by the strain gage sensor attached in the end of brass cantilever beam. Brass material was chosen to build cantilever as its Young moudulus contanst is bigger than other materials. Whilst mass loads for analizing brass cantilever profile are calibrated by manual Ohaus mass scale (PA214 type) with 0.07 gram load variations. The test result of this electronic mass scale system gets relationship of mass load data variation versus output voltage data (from differential amplifier). The relationship between mass and voltage can be approached by polynomial formula m = 4.2372V2 – 2.4551V + 1.5606 where m in gram and V in volt, and it gets 0.07 or 7% average error (less than linear formula approach). This formula is used further for programming ADC in 8-bit microcontroller to calculate mass and the calculation is shown in LCD 16x2.

Keywords

electronic mass scale, strain gage, brass cantilever

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References

[1] Joint Committee for Guides in Metrology, “International vocabulary of basic and general terms in metrology (VIM),” Int. Organ., vol. 2004, no. Dguide 99999, pp. 9–14, 2004.

[2] J. M. Bland dan D. G. Altman, “Comparing methods of measurement: why plotting difference against standard method is misleading,” Lancet, vol. 346, no. 8982, pp. 1085–1087, 1995.

[3] H. Syahwanti, A. Nelvi, dan M. S. Hendro, “Rancang Bangun Data Logger Massa Menggunakan Load Cell,” Prosiding SKF 2015, 2015, pp. 211–215.

[4] C. T. University, “5.2 Determination of Modulus of Elasticity.” [Online]. Available: https://tpm.fsv.cvut.cz/student/documents/files/BUM1/Chapter15.pdf. [Accessed: 24-Mei-2017].

[5] C. Papavassiliou, “Instrumentation,” 2010. [Online]. Available: http://cas.ee.ic.ac.uk/people/dario/files/E302/1Sensorsslides.pdf. [Accessed: 24-Mei-2017].

[6] T. Instruments, “Precision Analog Applications Seminar Bridge Measurement Systems Introduction to Bridge Sensors Circuits for Bridge Sensors A real design: the ADS1232REF The ADS1232REF Firmware.” [Online]. Available: www.ti.com/lit/ml/slyp163/slyp163.pdf.

[7] Husnawati, R. Pasarella, Sutarno, dan Rendyansyah, “Perancangan dan Simulasi Energi Meter Digital Satu Phasa Menggunakan Sensor Arus ACS712,” JNTETI, vol. 2, no. 4, pp. 307–315, 2013.

[8] P. D. C. Company, “Alloy Properties.” [Online]. Available: http://diecasting.com/resource-center/design-ideas/alloyproperties. php#properties01. [Accessed: 25-Mei-2017].

[9] Omega Engineering, “New Horizons ® in Strain Gages : OME ion BASICS.” [Online]. Available: www.omega.com/literature/omegadyne/omegadyneNH_sg.pdf. [Accessed: 01-Mei-2017].

[10] A. Device, “Integrated Circuit Precision Instrument Amplifier AD521.” [Online]. Available: http://www.analog.com/media/en/technicaldocumentation/data-sheets/AD521.pdf. [Accessed: 01-Jan-2017].

[11] R. F. Coughlin dan F. F. Driscoll, Operational Amplifiers and Linear Integrated Circuits, 2nd ed. New Jersey: Prentise Hall, 1982.

DOI: https://doi.org/10.22146/ijitee.31957