UE400系列差压开关
J400K型: 一个单刀双掷输出，内部可调，无参考刻度
J402K型：二个单刀双掷输出，内部可调，无参考刻度
H400K型：一个单刀双掷输出，内部可调，有参考刻度
H402K型：二个单刀双掷输出，内部可调，有参考刻度
J400K-S147B J400K-S157B J400K-147 J400K-157 J400K-455 J400K-456 J400K-457
J402K-S147B J402K-S157B J402K-147 J402K-157 J402K-455 J402K-456 J402K-457
J402K-540 J402K-541 J402K-542 J402K-543 J402K-544 J402K-545 J402K-546 J402K-547
J400K-559 J402-559
H400K-455 H400K-456 H400K-457 H400K-559
H402K-455 H402K-456 H402K-457 H402K-559
400系列单点式差压开关的特点
1. 动作点稳定，不会受冲击、振动温度变化或其它环境条件影响。
2. 不会因压力的波动而引起接点抖动，清晰明朗的开或关状态。
3. 不受泵的冲击、接点的振动疲劳等的影响。
4. 寿命长，稳定性及动作重复性高。
J400K-456 J400K-457 J400K-559 H400K-455 H400K-456 H400K-457 H400K-559 差压开关压力范围：
| 型号 | 可调整压力范围 | 死区 | 耐压 | 刻度盘分度 | 接液材质 | 压力接口 |
| J400K-456 | 0.1-1.4bar | 6.9-20.7mbar | 15.5bar | -1-15.5bar | 丁腈橡胶膜片及O型圈 | 1/4NPTF |
| J400K-457 | 0.2-2.1bar | 6.9-27.6bar | 15.5bar | -1-15.5bar | 丁腈橡胶膜片及O型圈 | 1/4NPTF |
| J400K-559 | 0.7-6.9bar | 13.8-68.9mbar | 15.5bar | -1-15.5bar | 特氟龙膜片及定睛橡胶O型圈 | 1/4NPTF |
| H400K-455 | 12.4-199.1mbar | 2.5-10mbar | 15.5bar | -1-15.5bar | 丁腈橡胶膜片及O型圈 | 1/4NPTF |
| H400K-456 | 0.1-1.4bar | 6.9-20.7mbar | 15.5bar | -1-15.5bar | 丁腈橡胶膜片及O型圈 | 1/4NPTF |
| H400K-457 | 0.2-2.1bar | 6.9-27.6bar | 15.5bar | -1-15.5bar | 丁腈橡胶膜片及O型圈 | 1/4NPTF |
| H400K-559 | 0.7-6.9bar | 13.8-68.9mbar | 15.5bar | -1-15.5bar | 特氟龙膜片及定睛橡胶O型圈 | 1/4NPTF |
机械差压开关工作原理：
差压开关由2个膜盒腔组成，两个腔体分别由两片密封膜片和一片感差压膜片密封。高压和低压分别进入差压开关的高压腔和低压腔，感受到的差压使感压膜片形变，通过栏杆弹簧等机械结构，*终启动*上端的微动开关，使电信号输出。差压开关的感压元件不同分为膜片和波纹管式，性能特点亦不同。差压开关由感压元件的组成不同，原理不同，性能也有不同。膜片式可以做成高静压低差压.
400系列J400压力开关型号表：
J400-570 J400-571 J400-572 J400-S126B J400-S134B J400-S137B J400-S144B
J400-S146B J400-S156B J400-S164B J400-358 J400-361 J400-376 J400-610
J400-16014 J400-614 J400-126 J400-134 J400-137 J400-144 J400-146 J400-156
J400-164 J400-270 J400-274 J400-440 J400-441 J400-442 J400-443 J400-448
J400-449 J400-450 J400-451 J400-452 J400-453 J400-454 J400-550 J400-551
J400-552 J400-553 J400-554 J400-555
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 J402-531
J402-532 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
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 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 J402-555
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-S144B
J403-S146B J403-S156B J403-S164B J403-358 J403-361 J403-376 J403-610
J403-16014 J403-614 J403-126 J403-134 J403-137 J403-144 J403-146 J403-156
J403-164 J403-270 J403-274 J403-440 J403-442 J403-443 J403-448
J403-450 J403-451 J403-452 J403-453 J403-454 J403-550 J403-551
J403-552 J403-553 J403-554 J403-555
400系列H400压力开关型号表：
H400-S126B H400-S134B H400-S137B H400-S144B H400-S146B H400-S156B H400-S164B
H400-358 H400-361 H400-376 H400-126 H400-134 H400-137 H400-144 H400-146 H400-156
H400-164 H400-270 H400-274 H400-440 H400-441 H400-442 H400-443 H400-448 H400-450
H400-452 H400-453 H400-454 H400-550 H400-552 H400-553 H400-554 H400-555
400系列H402双点压力开关型号表：
H402-S126B H402-S134B H402-S144B H402-S146B H402-S156B H402-S164B
H402-358 H402-361 H402-376 H402-126 H402-134 H402-144 H402-146 H402-156
H402-164 H402-270 H402-274 H402-450 H402-452 H402-453 H402-454 H402-550
H402-552 H402-553 H402-554 H402-555
400系列H403三点压力开关型号表：
H403-S126B H403-S134B H403-S144B H403-S146B H403-S156B H403-S164B
H403-358 H403-361 H403-376 H403-126 H403-134 H403-144 H403-146 H403-156
H403-164
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-559
J402K-540 J402K-541 J402K-542 J402K-543 J402K-544 J402K-545 J402K-546 J402K-547
400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-559
400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 C402-121
B403-120 B403-121 C403-120 C403-121
400系列E400,E402，E403温度开关型号：
E400-2BSA E400-2BSB E400-3BS E400-4BS E400-5BS E400-8BS
E402-2BSA E402-2BSB E402-3BS E402-4BS E402-5BS E402-8BS
E403-2BSA E403-2BSB E403-3BS E403-4BS E403-5BS E403-8BS
400系列F400,F402,F403温度开关型号：
F400-1BS F400-2BS F400-3BS F400-4BS F400-5BS F400-8BS
F402-1BS F402-2BS F402-3BS F402-4BS F402-5BS F402-8BS
F403-2BS F403-3BS F403-4BS F403-5BS F403-8BS