Dual-redundancy platinum thermal resistance wire temperature sensor and preparation method thereof

The invention discloses a dual-redundancy platinum thermal resistance wire temperature sensor which comprises a hollow protective shell. An electric connector is installed in the protective shell; oneend of the electric connector is connected with a dual-redundancy platinum thermal resistance wire winding and the outer side of the dual-redundancy platinum thermal resistance wire winding is sleeved with an installation sleeve; and the other end of the electric connector is connected with a wiring terminal. Besides, the inside of the protective shell is filled with epoxy resin. In addition, theinvention also discloses a method for preparing the dual-redundancy platinum thermal resistance wire temperature sensor. A first platinum thermal resistance wire and a second platinum thermal resistance wire which are mutually insulated and independent are wound on a framework group to form two groups of mutually independent detection loops; the monitoring loop is connected with an external detection circuit through a lug