Measuring system (1500; 1900) having electromechanical resonators, comprising: - at least two electromechanical resonators (102 1...102 N; 1902) each having a resonant frequency varying around an offload resonant frequency according to a physical quantity to be measured, each resonator (102 1...102 N; 1902) being provided with: - an input (104 1...104 N) intended to receive an excitation signal (e), - an output (106 1...106 N) for supplying an output signal (s 1...s N) in response to the excitation signal (e), the output signal (s 1...s N) having resonance at the resonant frequency of the resonator (102 1...102 N; 1902), and each resonator (102 1...102 N; 1902) comprising a mechanical structure defining its offload resonant frequency, the mechanical structures of the resonators (102 1...102 N; 1902) being different from one another so that the offload resonant frequencies are different from one another, - at least one reading device (1502 1...1502 M) connected to the inputs of the resonators and designed to supply an excitation signal (e 1...e M; e...(e) on said inputs, - a memory (120 1...120 M; 1906) wherein there is recorded, for each resonator, offload resonance information relating to the offload resonant frequency of the resonator, each reading device (1502 1...1502 M) being intended to determine the resonant frequency of one or more resonators selected for reading by configuring at least one element of the reading device (1502 1...1502 M) from the offload resonance information stored for each selected resonator, wherein the system is characterized in that it comprises several reading devices (1502 1...1502 M) intended to simultaneously determine the resonant frequencies of the selected resonators, in that it further comprises means (1504; 1918) for adding the excitation signals (e 1...e M; e...e) supplied by the reading devices, in order to supply a total excitation signal (e) at the inputs (104 1...104 N) of the electromechanical resonators (102 1...102 N; 1902), the total excitation signal (e) comprising a sum of the excitation signals (e 1...e M; e...e), in that it further comprises means for adding the output signals (s 1...s N) as a total output signal (s), in that each reading device (1502 1...1502 M) comprises a closed loop (112 1...112 M) intended to receive the total output signal (s) and to supply the excitation signal (e 1...e M; e...e) as a function of the total output signal (s), in that the closed loop is a controlled phase loop (112 1...112 M), in that each controlled phase loop (112 1...112 M) is designed to fix, after starting the reading, the frequency of the excitation signal (e 1...e M; e...e) on the frequency of a resonance peak of the total output signal (s) corresponding to the resonator selected for reading and to supply the fixed frequency as the determined resonant frequency, and in that the offload resonance information particular to each resonator is the offload resonant frequency of this resonator. - at least two electromechanical resonators (102 1...102 N; 1902) each having a resonant frequency varying around an offload resonant frequency according to a physical quantity to be measured, each resonator (102 1...102 N; 1902) being provided with: - an input (104 1...104 N) intended to receive an excitation signal (e), - an output (106 1...106 N) for supplying an output signal (s 1...s N) in response to the excitation signal (e), the output signal (s 1...s N) having resonance at the resonant frequency of the resonator (102 1...102 N; 1902), and each resonator (102 1...102 N; 1902) comprising a mechanical structure defining its offload resonant frequency, the mechanical structures of the resonators (102 1...102 N; 1902) being different from one another so that the offload resonant frequencies are different from one another, - an input (104 1...104 N) intended to receive an excitation signal (e), - an output (106 1...106 N) for supplying an output signal (s 1...s N) in response to the excitation signal (e), the output signal (s 1...s N) having resonance at the resonant frequency of the resonator (102 1...102 N; 1902), - at least one reading device (1502 1...1502 M) connected to the inputs of the resonators and designed to supply an excitation signal (e 1...e M; e...(e) on said inputs, - a memory (120 1...120 M; 1906) wherein there is recorded, for each resonator, offload resonance information relating to the offload resonant frequency of the resonator,