RANCANG BANGUN SISTEM ALIRAN PADA HIDUNG ELEKTRONIK INDIRECT UNTUK DETEKSI AROMA TEH; FLOWING SYSTEM DESIGN OF INDIRECT ELECTRONIC NOSE TO TEA AROMA DETECTION

Rahmatullah, Fardhan R, Danang Lelono

2015 | Skripsi | FMIPA UGM

Has created an electronic nose used to detect the aroma of a sample. Sampling method on an electronic nose as indirect systems are widely used in e-nose models today, because by using indirect systems, the sample to be studied is placed separately by the system getter aroma (sensor arrays). Therefore, researchers made a model of the electronic nose system indirect, By using three solenoide valve, controller, gas sensor, temperature and humidity sensors. Three solenoide used as a control valve on the system flowing. Solenoide valve settings using a computer with an integrated software system. odor on using two solenoide while the odor off using one solenoide. The flow rate was measured using a flowmeter, while the heater control system uses on-off. Results obtained by using a flow rate of 2 liters per minute and odor system on - odor off by a ratio of 1: 1 to see the existing volatile at tea. Sensors that respond well to a sample of this tea was TGS 2600, TGS 2620, TGS 813, 822. As for the sensor TGS TGS 2610 and TGS 2611 responds to the scent of tea but the pattern in dahasilkan very small. And sensors that do not respond well that TGS 2602 and TGS 2612. Two of these sensors showed no change either at the time of odor on and off odor.

Kata Kunci : Electronic nose; Sample; Solenoide valve; Temperature; flow rate.