【J402-530】美国UE一级代理UE双点微压开关UE开关授权代理 UE正规代理

【J402-530】美国UE一级代理UE双点微压开关UE开关授权代理 UE正规代理

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超过额定值时，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：推荐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。
7.带隔膜的场合：测定腐蚀性、高黏度或温度过高时，需要选用带隔膜。

H400系列压力
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
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
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?H403-270 H403-274 H403-450?

H402-S146B??H403-443??H403-448????H403-S137B??H403-S134B??H403-S126B??H400-S126B
H400-358??H400-361??H400-376??H402-354??H402-358??H402-361??H402-376??H400-S134B
H403-354??H403-358??H403-361??H403-376??H400-126??H400-134??H400-137??H400-S137B
H400-144??H400-146??H400-156??H400-164??H400-440??H400-441??H400-442??H400-S144B
H400-443??H400-448??H400-450??H400-452??H400-453??H400-454??H400-550??H400-S146B
H400-552??H400-553??H400-554??H400-555??H402-550??H402-552??H402-553??H400-S156B
H402-554??H402-555??H402-126??H402-134??H403-440??H403-441??H403-442??H402-S137B
H402-137??H402-144??H402-146??H400-S164B??H403-144??H403-146??H403-156??H403-164
H402-156??H402-164??H402-440??H402-441??H403-126??H403-134??H403-137??H402-S134B
H402-442??H402-443??H402-448??H402-S126B??H402-450??H402-452??H402-453??H402-454
J120-184??J120-185??J120-186??J120-S144B??J120-489??J120-190??J120-191??J120-192
H403-S164B??H403-S156B??H403-S146B??H400-258??H400-270??H400-274??H402-258??10A-10
H402-270??H402-274??H400-354??10A-16??10B-16??10C-10??10C-12??10C-16??10D-10
10D-12??10D-16??10E-10??10E-12??10E-16??10F-10??10F-12??10F-16??10G-10??10G-12
10G-16??24-015??04-016??24-017??24-018??24-019??24-020??24-021??24-022??J6-680
J120-191??H100-522??J402-126??H121-S134B??24-011??24-012??24-013??24-014??J6-144
J402-156??J402-164??J402-270??J402-S137B??J403-441??J403-442??J403-443??J403-448
J402-574??J402-440??J402-441??J402-442??J402-454??J402-550??J402-551??J402-S146B
J402-443??J402-448??J402-449??J402-S144B??J402-450??J402-451??J402-452??J402-453
J403-555??J403-S126B??J403-S134B??J403-S137B??H117-191??H117-567??H117-564
J403-S144B??J403-S146B??J403-S156B??H121-550??H121-552??H121-553??H121-S137B
J402-552??J402-553??J402-612??J402-555??J402-535??J402-570??J402-571??J402-16014
J400-550??J400-551??J400-552??J400-S134B??J400-553??J400-554??J400-555??J403-570
J402-572??J402-358??J402-361??J402-376??J403-551??J403-552??J403-553??J400-S164B
J402-610??J402-614??J402-126??J402-S126B??J403-452??J403-453??J403-454??J403-550
J402-134??J402-137??J402-144??J402-146??J403-449??J403-450??J403-451??J400-S156B