Armored thermal resistance of six steps

Armored thermal resistor is a kind of temperature sensor, using material when the temperature changes, its resistance also along with the change of characteristics to measure temperature. When resistance changes, the work shows the temperature resistance of the meter. It is fabricated platinum resistance diameter is small, flexible, suitable for installation in duct stenosis and require rapid response, miniaturization and other special occasions. It can be to - 200 ~ 600 ℃ temperature range of gas and liquid medium to automatically detect and solid surface, and can be directly connected with copper wires and secondary instrument use, because it has good electrical output characteristics, to display, data recorder, recorder, controller, scanner and computer to provide accurate input values.

1。 Armored thermal resistance temperature sensing element resistance wire winding by special processing, close to the face in the thermometer. Compared with general axial thermal resistance, it can reflect more correctly and quickly end face of the actual temperature being measured, is suitable for measuring temperature bearing and other parts of the face.

2。 Most armored thermal sensitive element is about 120 mm in length, resistance of choosing inserted depth of the thermal resistance, should consider to thermal resistance sensor can only measurement of full range of the measured medium uniformity degree.

3。 Armoured heat resistance wire, junction box opened the first, and then wiring. Connection way of general there are two wire and three-wire system two kinds. Three wire system has the advantage of cohesion, can prevent the bimetallic thermometer provoked by connecting wire resistance value of the instrument error value for show.

4。 Thermal resistance and show the connecting wires should be insulated copper wire, shall not use the thermocouple compensating lead wires. Shows copper wire resistance should be according to the rules of data matching instrument technique conditions, the average of 2 a 50, dc balanced bridge wire resistance value can be used to adjust.

5。 Can't take a thermal resistor and two meter used in parallel, as long as can only be used for the double branch type resistance and appeared two instrument used together.

6. Type flameproof thermal barrier explosion heat resistance through the special structure of the junction box, put the shell internal explosive mixed gas by affected by sparks or electric arc explosion limit within the junction box, that wouldn't make production field explosion. Flameproof thermal resistance can be used for road repairs are bound to change the length of the wire resistance and impact resistance, resistance to replace the new body is good, if the repair welding, after welding to be calibrated before use.