摘要：Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Abstract D esign ing and creating of automatic solenoid valve of control circuit through the Personal Comupter (PC) on water flow rate calibration system p iston p rover OT-400 has been done at the fluid flow laboratory of Research Center for Calibration, Instrumentation and Metrology LIPI. Solenoid is used to control the water flow rate by adjusting the opening and closing its valve. ATmega328 microcontroller on the Arduino Duemilanove board is used to control the input voltage solenoid by using Pulse Width Modulation (PWM) and communicates serial ly via the PC with USB port. From the test results found that these control systems can run well in controlling the solenoid valve, so that research activities in analyzing the solenoid valve to control water flow rate can be done more easily, quickly and efficiently. Keywords: control, solenoid valve, Arduino Duemilanove, water flow rate. Abstrak Telah dilakukan perancangan dan pembuatan rangkaian pengendali katup solenoid otomatis melalui Personal Comupter(PC) pada sistem kalibrasi laju aliran air piston prover OT-400 di laboratorium aliran fluida Pusat Penelitian Kalibrasi, Instrumentasi dan Metrologi LIPI. Solenoid ini digunakan untuk mengendalikan laju aliran air dengan mengatur buka tutup katupnya. Digunakan mikrokontroler ATmega328 pada board arduino Duemilanove untuk mengendalikan tegangan input solenoid dengan menggunakan Pulse Width Modulation(PWM) dan berkomunikasi serial dengan PC melaui port USB. Dari hasil pengujian didapatkan bahwa sistem pengendali ini dapat berjalan dengan baik dalam mengendalikan katup solenoid, sehingga kegiatan penelitian dalam menganalisa pengendalian katup solenoid terhadap laju aliran air dapat dilakukan dengan lebih mudah, cepat dan efisien. Kata kunci: kendali, katup solenoid, Arduino Duemilanove, laju aliran air.
