Fluid measurement sensor and mass flow controller

A mass flow controller, comprising a fluid measurement sensor, wherein the fluid measurement sensor comprises a sensor base, a cover plate, a housing, a sensing tube, a thermal insulation layer, a pressing block, and a lead-out wire;

• wherein
• the housing is connected to the sensor base, the cover plate is connected to the housing from one side of the housing, an inner sidewall of the housing is provided with a first half groove, an inner sidewall of the cover plate is provided with a second half groove, and the first half groove and the second half groove form a mounting groove;
• the sensing tube is provided with windings wound round the sensing tube, the thermal insulation layer wraps the windings, the sensing tube wrapped by the thermal insulation layer is disposed in the mounting groove, and two ends of the sensing tube penetrate through the sensor base;
• one end of the lead-out wire is electrically connected to the windings;
• and
• the pressing block is connected to the sensor base, and is located between the cover plate and the sensor base, a second groove is formed at a bottom of the pressing block, the pressing block presses the lead-out wire in the second groove, and the other end of the lead-out wire passes through the second groove and extends to an outer side of the cover plate through space between the pressing block and the sensor base.