【UE防爆开关】UE防爆不锈钢开关防腐开关J120-530

发布时间:2017-07-31

【UE防爆开关】UE防爆不锈钢开关防腐开关J120-530
西安秦控 http://www.xaqksm.com 张工  手机(微信):  电话: 传真:  QQ:3098752790


UE开关的工作原理

压力开关的工作原理:是当系统内压力高于或低于额定的安全压力时,感应器内碟片瞬时发生移动,通过连接导杆推动开关接头接通或断开,当压力降至或升额定的恢复值时,碟片瞬时复位,开关自动复位,或者简单的说是当被测压力过额定值时,弹性元件的自由端产生位移,直接或经过比较后推动开关元件,改变开关元件的通断状态,达到控制被测压力的目的。压力开关采用的弹性元件有单圈弹簧管、膜片、膜盒及波纹管等。
 注意事项
压力开关广泛应用于家用、商用、汽车制冷系统的高、低压力保护控制,蒸汽工况和发电站;蓄能器,接收器,闪蒸罐,分离器,洗涤器,炼油装置。也可适用于各种设备工具的高、低压力保护控制。但在压力开关的选择中,须注意以下几点:
1.防爆的必要性:防爆形式分为隔爆型和本安型。
2.是否需要带指示:根据客户指示。
3. 接点数量:一接点(一个输出)或两接点(两个输出)。
4.设定值和压力范围的确定:设定范围在压力范围的30%—65%之间,可设定范围为压力范围的15%—90%之间。
5.接断差的形式:可调式或固定式。
6.是否有脉动:如果压力有脉动或振动,需要带节流阀用以抑制脉动压力对仪表的损伤。


J120-172?? J120-173?? J120-174???? J120-183???? J120-193?? J120-S156B?? J120K-S147B
J120-194?? J120-490?? J120-485???? J120-486???? J120-488?? J120-15839?? J120K-37
J120-188?? J120-189?? J120-483???? J120-484???? J120-552?? J120-S137B?? J120K-38
J120-702?? J120-703?? J120-704???? J120-705???? J120-553?? J120-S152B?? J120K-39
J120-554?? J120-566?? J120-567???? J120-171???? J120-270?? J120-S126B?? J120K-544
J120-491?? J120-492?? J120-493???? J120-494???? J120-274?? J120-15835?? J120K-545
J120-524?? J120-525?? J120-530???? J120-376???? J120-612?? J120-S156B?? J120K-457
J120-520?? J120-521?? J120-522???? J120-523???? J120-616?? J120-S144B?? J120K-S157B
J120-680?? J120-701?? J120-184???? J120-185???? J120-186?? J120-S164B?? J120K-548
J120-172?? J120-489?? J120-190???? J120-191???? J120-192?? J120-15622?? J120K-455
J120-562?? J120-563?? J120-564???? J120-565???? J120-126?? J120-S134B?? J120K-367
J120-134?? J120-137?? J120-555???? J120-191???? J120-356?? J120-15837?? J120K-157
J120-531?? J120-532?? J120-533???? J120-534???? J120-561?? J120-15834?? J120K-147
J120-358?? J120-361?? J120-535???? J120-560???? J120-453?? J120-15836?? J120K-456
J120-144?? J120-152?? J120-156???? J120-164???? J120-454?? J120-15838?? J120K-547
J120-450?? J120-451?? J120-452???? J120-550???? J120-551?? J120K-36???? J120K-546
J120K-599? J120K-540? J120K-541??? J120K-542??? J120K-543
J54A-22??? J54A-26??? J54A-28????? J54S-126???? J54S-134?? J54S-137???? J54AS-134
J54A-24??? J54S-22??? J54-137????? J54A-126???? J54A-134?? J54A-137???? J54AS-126
J54S-26??? J54S-24??? J54S-28????? J54A-144???? J54S-610?? J54S-164???? J54AS-28
J54-22???? J54-156??? J54S-612???? J54S-152???? J54S-156?? J54AS-22???? J54AS-137
J54-28???? J54-144??? J54-152????? J54S-144???? J54A-152?? J54A-156???? J54S-16008
J54-164??? J54-610??? J54-614????? J54A-164???? J54AS-24?? J54AS-26???? J54AS-144
J54-612??? J54-616??? J54AS-152??? J54AS-156??? J54S-614?? J54S-616???? J54-134
J54-24???? J54-126??? J54-26?????? J54-16009??? J54AS-164
J21K-127?? J21K-134?? J21K-137???? J21K-156???? J21K-367?? J21K-S147B?? J21K-S127B
J21K-157?? J21K-232?? J21K-254???? J21K-357???? J21K-144?? J21K-16020?? J21K-S157B
J21K-16021

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