Analyzes the effect of temperature on characteristics of crude oil permittivity sensor based on Interdigital Capacitors (IDCs)

Rachmanita, R E and Rudiyanto, B and Ahmadi, H and Seetawan, T (2020) Analyzes the effect of temperature on characteristics of crude oil permittivity sensor based on Interdigital Capacitors (IDCs). Journal of Physics: Conference Series, 1511. ISSN 1742-6588

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Abstract

This study aims to analyze the effect of temperature on characteristics of crude oilpermittivity sensor based on interdigital capacitors (IDCs), including linearity, repeatabilityand hysteresis. IDCs have been fabricated using the DC Magnetron Sputtering method in threedesigns with different electrode materials and the same electrode configuration. The electrodematerials used silver (Ag), copper (Cu) and molybdenum (Mo) deposited on a FR-4 PCBsubstrate with a thickness of 1μm. The electrode configuration each design is 15 mm electrodelength, 0.5 mm electrode width, 0.5 mm electrode distance and 40 electrodes number. Thecrude oil was tested at a temperature range of 30 - 70oC. The measurement system uses aPM6303A automatic RCL Meter at a frequency of 1 kHz. The sensor linearity test resultsshowed an increase in the sensitivity value of the IDCs Ag, Mo and Cu sensors when thetemperature was more than 50oC. The repeatability sensor test results showed that IDCs madefrom Ag had the highest measurement precision with a value of %repeatability is 2.5%. Thehysteresis test results showed that the design IDCs made from Ag have high stability at highand low temperatures.

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