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电热管使用及保存注意的事项

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1、电热管应做好定位固定,有效发热区必须全部浸入液体或金属固体内,严禁空烧。发现管体表面有水垢或结碳时,应及时清除干净再用,以免影晌散热而缩短使用寿命。
1, the electrothermal pipe should be fixed, effective heating zone must be fully immersed in a liquid or solid metal, no air burning. Found the body surface scaling or carbon, should be cleaned and then, to avoid affecting heat and shorten the service life.
2、加热易熔金属或固态硝盐、碱、沥清、石腊等时,应先降低使用电压,待介质熔化后,才能升至额定电压。 3、元件允许在下列条件下工作: A.空气相对湿度不大于95%,无爆炸性和腐蚀性气体。 B.工作电压应不大于额定值的1.1倍,外壳应有效接地。 C.绝缘电阻≥1MΩ 介电强度:2KV/1min。
2, heating the fusible metal or solid salt, alkali, asphalt, paraffin, should reduce the use of voltage for medium, after melting, can rise to the rated voltage. 3, element allowed under the following conditions: A. air relative humidity of not more than 95%, non explosive and corrosive gases. B. working voltage should be not greater than 1.1 times the rated value, the shell should be effectively grounded. C. insulation resistance than 1M Ω dielectric strength: 2KV/1min
4、加热空气时元件应交叉均匀排列,使元件有良好的散热条件,使流过的空气能充分加热。
4, heating the air element shall be uniformly arranged so that the element cross, has good heat dissipation conditions, so that the air can be fully heated.
5、加热硝盐时应考虑安全措施,预防爆炸事故。
5, heating nitrate should consider security measures, prevention of explosion accident.
6、元件应存放在干燥处,若步进电机长期放置绝缘电阻低于1MΩ时,可在200℃左右的烘箱中干燥,或降低电压通电加热,直至恢复绝缘电阻。
6, components should be stored in a dry place, if the long-term placement of stepping motor insulation resistance of less than 1M ohm, can be in the oven at 200 ℃ drying, or lower voltage electric heating, until the return of insulation resistance.
7、电热管出线端的氧化镁粉,在使用场所避免受到污染物与水分渗入,防止漏电事故的发生。
7, electric heating pipe outlet of magnesium oxide powder, used in place to avoid contamination and the ingress of moisture, prevent the occurrence of leakage accident.
8、接线部分应放在保温层外面,避免与腐蚀性、爆炸性介质、水份接触;引接线应能长期承受接线部分的温度及加热负载,接线螺丝紧固时应避免用力过猛
8, part of the wiring should be placed on the outside of the insulation layer, avoid contact with corrosive, explosive medium, moisture; wiring should be able to bear long-term connection portion of the temperature and heating load, a wiring screw fastening should avoid excessive force

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