J402-441-M202-M408美国ue炉膛微压双信号压力开关  
美国UE***机械压力开关J400系列库存现货

 J402-441 J402-442 J402-443 J402-448 J402-449 J402-450 J402-451 J402-452 J402-453 J402-454 J402-550 J402-551 J402-552 J402-553 J402-554 J402-555J400-440 J400-441 J400-442 J400-443 J400-448J400-449 J400-450 J400-451 J400-452 J400-453 J400-454 J400-550 J400-551 J400-552 J400-553 J400-554 J400-555压力开关的定义

简单的说压力开关其实就是一种控制设备压力的压力控制装置，当管道或其他设备的被测压力达到设定值时，机械或电子压力压力开关发出控制信号。

压力控制器是工业过程测量与控制系统中控制压力的一种专用仪表，工程中通常称作压力开关。根据工作原理分为以下两大类。

根据工作原理分为以下两大类：

1、机械式压力控制器 ；

2、电子式压力控制器。

机械式压力控制器是机械形变导致微动开关动作，在制冷系统中主要用作高低压压力控制器。

工作原理：

当系统内压力高于某一个设定压力计时，不同的压感元件（弹簧管、膜片、膜盒、波纹管、活塞等)的自由端产生位移，通过链接导杆推动开关内碟片瞬时发生移动；当压力降至额定的恢复值时，碟片瞬时反向移动，开关自动复位，*终输出一个开关量的电信号。

400系列J400压力开关型号表：J400-570 J400-571 J400-572 J400-S126B J400-S134B J400-S137B J400-S144BJ400-S146B J400-S156B J400-S164B J400-358 J400-361 J400-376 J400-610J400-16014 J400-614 J400-126 J400-134 J400-137 J400-144 J400-146 J400-156J400-164 J400-270 J400-274 400系列双点J402压力开关型号表：J402-520 J402-521 J402-522 J402-523 J402-524 J402-525 J402-530 J402-531J402-532 J402-533 J402-534 J402-535 J402-570 J402-571 J402-572 J402-S126B J402-S134B J402-S137B J402-S144B J402-S146B J402-S156B J402-S164B J402-358#p#分页标题#e#J402-361 J402-376 J402-610 J402-16014 J402-614 J402-126 J402-134 J402-137 J402-144 J402-146 J402-156 J402-164 J402-270 J402-274 400系列三点J403压力开关型号表：J403-570 J403-571 J403-572 J403-S126B J403-S134B J403-S137B J403-S144BJ403-S146B J403-S156B J403-S164B J403-358 J403-361 J403-376 J403-610J403-16014 J403-614 J403-126 J403-134 J403-137 J403-144 J403-146 J403-156J403-164 J403-270 J403-274 J403-440 J403-442 J403-443 J403-448J403-450 J403-451 J403-452 J403-453 J403-454 J403-550 J403-551 J403-552 J403-553 J403-554 J403-555400系列H400压力开关型号表：H400-S126B H400-S134B H400-S137B H400-S144B H400-S146B H400-S156B H400-S164BH400-358 H400-361 H400-376 H400-126 H400-134 H400-137 H400-144 H400-146 H400-156H400-164 H400-270 H400-274 H400-440 H400-441 H400-442 H400-443 H400-448 H400-450H400-452 H400-453 H400-454 H400-550 H400-552 H400-553 H400-554 H400-555400系列H402双点压力开关型号表：H402-S126B H402-S134B H402-S144B H402-S146B H402-S156B H402-S164BH402-358 H402-361 H402-376 H402-126 H402-134 H402-144 H402-146 H402-156H402-164 H402-270 H402-274 H402-450 H402-452 H402-453 H402-454 H402-550 H402-552 H402-553 H402-554 H402-555400系列H403三点压力开关型号表：H403-S126B H403-S134B H403-S144B H403-S146B H403-S156B H403-S164BH403-358 H403-361 H403-376 H403-126 H403-134 H403-144 H403-146 H403-156H403-164 400系列J400K差压开关型号表：J400K-S147B J400K-S157B J400K-147 J400K-157 J400K-455 J400K-456 J400K-457 J400K-559 400系列J402K双点差压开关型号表：J402K-S147B J402K-S157B J402K-147 J402K-157 J402K-455 J402K-456 J402K-457 J402K-559J402K-540 J402K-541 J402K-542 J402K-543 J402K-544 J402K-545 J402K-546 J402K-547400系列H400K差压开关型号表：H400K-455 H400K-456 H400K-457 H400K-559 H402K-455 H402K-456 H402K-457 H402K-559400系列B400,B402，B403，C400，C402，C403温度开关型号：B400-120 B400-121 C400-120 C400-121 B402-120 B402-121 C402-120 C402-121B403-120 B403-121 C403-120 C403-121400系列E400,E402，E403温度开关型号：E400-2BSA E400-2BSB E400-3BS E400-4BS E400-5BS E400-8BSE402-2BSA E402-2BSB E402-3BS E402-4BS E402-5BS E402-8BSE403-2BSA E403-2BSB E403-3BS E403-4BS E403-5BS E403-8BS400系列F400,F402,F403温度开关型号：F400-1BS  F400-2BS  F400-3BS F400-4BS F400-5BS F400-8BSF402-1BS  F402-2BS  F402-3BS F402-4BS F402-5BS F402-8BSF403-2BS  F403-3BS F403-4BS F403-5BS F403-8BS

实物图：