The design of the ethanol concentration measurement system using a specific gravity approach has been previously developed. It was built for batch distillation column automation. The measurement system use a combination of 2 kinds of sensor (i.e. load cell sensor and ultrasonic sensor). However, the dynamic characteristic of the measurement system has not been evaluated. This paper is a continuation of the previous paper. This paper aims to describe the dynamic characteristics of the ethanol

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... centration measurement system. The dynamic characteristic is another performance analysis besides the static characteristic that present in the previous paper. The dynamic characteristic covers rise time, settling time, and overshoot. This paper also presents a transfer function, pole, and zero location by process the output and input data. This paper concern about dynamic characteristics at one-point operation (75 % of ethanol measuring with a hydrometer) then measured by the ethanol measurement system that was designed in this research. Farther the dynamic characteristic was observed from the device until the device reading was steady-state. The result revealed that the rise time of ethanol concentration of measurement system was 56.4 second, settling time 112.2 second and percentage of overshoot was 1.2%. The measurement system can present the actual data after 117.4 second.