Want to be a thermometer experts, these should know!

Bimetallic thermometer is known to all, it is a kind of measurement in the field of low temperature test instrument. Bimetallic thermometer is mainly used in industry of element is one with two or more pieces of metal laminate composed of multilayer metal together, using two different metal working in the principle of expansion degree of different temperature changes. Is based on the ring around made of bent bimetallic strip. End is heated expands, turns the pointer, the instrument will show thermoelectric potential should value. Bimetallic thermometer is a round shape into threaded heat bimetallic strip as thermal devices, and put it in a protective sleeve tube, one end is fixed, known as the fixed end, the other end of the connection on a thin shaft, a free end. Spool at the free end is equipped with a pointer. When the temperature changes, the resulting thermal devices the free end of the rotation, drive the thin axis from the Angle of the pointer changes, the corresponding temperature indicator on the dial; Straight table by steering transmission mechanism drive the pointer changes. Due to the thermal device has a linear relation with temperature changes, so the position of the pointer indicated by bimetallic temperature sensor, that is, the temperature of the measured values. Watchcase material can be steel plate, casting alloy and stainless steel plate; Detecting element also have core-pulling structure; Adjustable Angle meter part of the temperature sensor by means of the corrugated pipe, Angle of body parts, such as can be from the Angle to the straight or from the straight to the Angle at any Angle. The bimetallic thermometer pointer plate with the direction of protecting tube connection bimetallic thermometer can be divided into axial, radial and 135 & deg; To type and universal type four. 1, axial bimetallic thermometer: pointer vertical connection tube plate and protection. 2, radial bimetallic thermometer: pointer GuanPing line connection pipe and protection. 3、135° The bimetallic thermometer: pointer tube plate and protection into 135 & deg; The connection. 4, universal type bimetallic thermometer: pointer plate connected to the protecting tube Angle can be arbitrary adjustment. In order to meet the needs of practical production, bimetallic thermometer has different installation fixed form: movable external thread pipe joint, movable threaded pipe joints, fixed nipple, card sets of nipple, flange joint and a fixed flange. The above is the introduction of bimetallic thermometer, you should know?