This work presents the performance analysis of a compact electrical permittivity sensor based on monopoles-coupled Split Ring Resonator to measure the dielectric properties changes in liquids. The sensor was designed and fabricated on standard FR4 substrate with a dielectric constant ε <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</inf> =4.4 with 1.56 mm of thickness and the optimized dimension of 35 × 50 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . Simulation results are made using finite element method. The sensor sensitivity is obtained based on the shift of its resonance frequency when the permittivity of the material surrounding the resonator is altered. A remarkable shift of resonance frequency is observed upon introduction of several samples with different permittivity values in a range of 16 to 30, with a sensitivity of −81.9 MHz/Δε. Finally, some experimental measurements with samples of acetone and ethanol were performed to validate the operation of the proposed sensor.