The function of 3c smoke exhaust fire damper is that when the smoke temperature reaches 280℃, people have basically evacuated, and at this time, the smoke has caught fire, and it is automatically made of good steel. Close the high-quality seamless steel pipe valve. A single-layer louver vent, wherein the pipeline of the single-layer louver vent passes through the partition wall of the fire prevention room; Pipes pass through the partition walls and floors of ventilation and air-conditioning rooms and important rooms or rooms with high fire risk; Horizontal pipe section at the junction of vertical air duct and horizontal air duct on each floor; The pipeline passes through both sides of the deformation joint.

3c Error check requirements for smoke exhaust fire damper:

1, the basic error

Input the specified input signal into the actuator (or positioner) smoothly in the direction of increasing or decreasing, measure the travel value corresponding to each point, and calculate the error of each point between the actual "signal-travel" relationship and the theoretical relationship, and the maximum value is the basic error.

2. Return difference

The maximum difference between the forward and reverse strokes measured on the same input signal is the return difference.

3, always deviation

The basic error at the lower line of the signal is the starting point deviation, and the basic error at the upper line of the signal is the end point deviation.

After the non-operation temperature test of the temperature sensor is qualified, the operation temperature test of the temperature sensor shall be carried out. If all actions pass the action temperature test. Otherwise, it is necessary to recheck the remaining samples, and if the recheck is qualified, it is judged that the action temperature test is qualified. Otherwise, the action temperature test is judged to be unqualified. There are 12 inspection items, including "appearance, tolerance, driving torque, position function, temperature sensor control, manual control, electric control, insulation performance, reliability, corrosion resistance, air leakage at ambient temperature and fire resistance".