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ITS » Undergraduate Theses » Fisika
Posted by anis at 02/06/2009 16:07:27  •  6961 Views


PERANCANGAN DAN PEMBUATAN ALAT UKUR INDEKS BIAS CAIRAN MENGGUNAKAN FIBER OPTIK FDS 620 10

DESIGNING AND FABRICATION MEASURER OF LIQUIDS REFRACTION INDEX USING OPTICAL FIBER TYPE FDS 620-10

Author :
Fatimah, Iim 




ABSTRAK

Telah dibuat suatu sistem pengukuran indeks bias cairan berdasarkan perubahan intensitas cahaya yang terdeteksi pada fiber optik. Permukaan fiber optik dimodifikasi sehingga mampu mendeteksi perubahan yang dialami selama proses perlakuan. Sistem ini menggunakan sumber cahaya berupa laser He Ne sebagai transmiter fotodioda sebagai receiver dan ADC sebagai konversi data analog ke data digital serta cairan yang digunakan adalah Aquades Minyak Tanah Solar dan Bensin. Sumber cahaya dimasukkan ke dalam pangkal fiber optik dan dideteksi keluarannya pada ujung fiber optik oleh fotodioda. Suatu ADC dengan resolusi 8 bit diatur dengan perangkat lunak untuk mengukur tegangan fotodioda yang ditimbulkan akibat intensitas sinar laser. Tegangan fotodioda dibaca oleh ADC dan ditampilkan dalam bentuk nilai indeks bias dalam Personal Computer PC. Dari percobaan yang telah dilakukan diperoleh hasil nilai indeks bias cairan adalah Aquades sebesar 13318 Minyak tanah sebesar 1449 Solar sebesar 14671 dan Bensin sebesar 1422. Besarnya standart deviasi dari sistem sensor yang dibuat adalah 0002


ABSTRACT

Measurement systems of liquids refraction index has been made based on light intensity changes detecting by an optical fiber. The surface of the optical fiber was modifying to detect any changes as long as measuring process. This system using He-Ne laser as a transmitter photodiode as a receiver and ADC as a analog data converter into digital data and also use Aquades Kerosene Solar and Gasoline as the utilized liquid. The light source was radiated into the optical fiber and output detected by photodiode on the other end of the optical fiber. An 8-bit resolution ADC arranged with software to measure photodiode voltage excited by laser intensity. Photodiode voltage was reading by ADC and displayed in form of refraction index on the PC. Result of experiments produce the refraction index of Aquades 13318 Kerosene 1449 Solar 14671 and Gasoline 1422.The deviation standard of the manufactured is 0002.



KeywordsIndeks bias ; ADC ; Fiber Optik ; fotodioda ; Personal Computer (PC).
 
Subject:  Alat pengukur
Contributor
  1. Endarko, M.Si
    Drs Gatut Yudoyono, M.T
Date Create: 02/06/2009
Type: Text
Format: pdf.
Language: Indonesian
Identifier: ITS-Undergraduate-3100008033796
Collection ID: 3100008033796
Call Number: RSFi 681.25 Fat p


Source
Undergraduate Theses, Departemen of Physics RSFi 681.25 Fat p, 2008

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