| 主权项 |
1. A mass flowmeter comprising:
a detecting element; a signal receiving element; and a signal processing element;
wherein the detecting element, and the signal receiving element, and the signal processing element are electrically connected with each other; the detecting element comprises a first sensing element and a second sensing element, each of the first sensing element and the second sensing element comprise a carbon nanotube composite wire; the carbon nanotube composite wire comprises a carbon nanotube wire and a metal layer; the carbon nanotube wire comprises a plurality of carbon nanotubes spirally arranged along an axial direction of the carbon nanotube wire, a diameter of the carbon nanotube wire ranges from about 50 nanometers to about 30 micrometers, a twist of the carbon nanotube wire ranges from about 10 r/cm to about 300 r/cm; and the metal layer is coated on a surface of the carbon nanotube wire, and a thickness of the metal layer ranges from about 50 nanometers to about 5 micrometers. |
