压力继电器有柱塞式、膜片式、弹簧管式和波纹管式四种结构形式。下面对柱塞式压力继电器（见图1）的工作原理作一介绍：
当从继电器下端进油口3进入的液体压力达到调定压力值时，推动柱塞2上移，此位移通过杠杆放大后推动微动开关4动作。改变弹簧1的压缩量，可以调节继电器的动作压力。
应用场合：用于安全保护、控制执行元件的顺序动作、用于泵的启闭、用于泵的卸荷。
注意： 压力继电器必须放在压力有明显变化的地方才能输出电信号。若将压力继电器放在回油路上，由于回油路直接接回油箱，压力也没有变化，所以压力继电器也不会工作
德国力士乐压力继电器hed80p1x/50k14s力士乐代理电话
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压力继电器 hed80a1x/350k14
压力继电器 hed80p1x/50k14s
压力继电器 hed80p-1x/315+z15l24
压力继电器 hed8-op-1x/200-k14-s
压力继电器 hed8-op-1x/200-k14-s
压力继电器 hed40p10/350s
压力继电器 hed80a1x/350k14
压力继电器 hed50p.20/210l24
压力继电器 hed80h1x1200k14a
压力继电器 hed40p10/350s
压力继电器 hed50p.20/210l24
压力继电器 hed80a1x/350k14
压力继电器 hed80h1x/200k14a
压力继电器 hed80p10/100z15l24sv
压力继电器 hed80p1x/50k14s
rexroth力士乐压力开关/压力继电器/压力传感器
rexroth力士乐压力开关hed80h2x/100k14
rexroth力士乐压力开关hed80h2x/200k14
rexroth力士乐压力开关hed8oa2x/50k14
rexroth力士乐压力开关hed80a2x/350k14kw
rexroth力士乐压力开关hed80p2x/350k14kw
rexroth力士乐压力继电器 hed8oh1x/350k14
rexroth力士乐压力继电器 hed8oa1x/350k14
rexroth力士乐压力继电器 hed8oh1x/200k
rexroth力士乐压力继电器 hed8oh1x/50k
rexroth力士乐压力继电器 hed30a3x400kl24q
rexroth力士乐压力继电器 hed80h1×1200k14a
rexroth力士乐压力继电器 hed40p10/350s
rexroth力士乐压力继电器 hed50p.20/210l24
r901107128 hed8oh-2x/100k14a
r901107126 hed8oa-2x/200k14ks
r901107093 hed8op-2x/200k14s
r901107087 hed8oa-2x/350k14ks
r901107086 hed8oh-2x/50k14as
r901106509 hed8op-2x/100k14s
r901106505 hed8oh-2x/100k14as
r901106504 hed8op-2x/50k14s
r901106498 hed8oh-2x/100k14ks
r901106453 hed8op-2x/350k14
r901106452 hed8oa-2x/200k14as
r901106449 hed8op-2x/630k14s
r901106448 hed8oa-2x/200k14kw
r901106259 hed8oa-2x/100k14a
r901102754 hed8oa-2x/50k14kw
r901102747 hed8op-2x/100k14
r901102727 hed8oa-2x/200k14s
r901102721 hed8op-2x/200k14
r901102716 hed8oa-2x/350k14kw
r901102711 hed8oa-2x/100k14s
r901102710 hed8oa-2x/350k14
r901102708 hed8oa-2x/200k14
r901102706 hed8oa-2x/100k14
r901102704 hed8oa-2x/50k14s
r901102702 hed8oa-2x/50k14ks
r901102362 hed8oh-2x/200k14s
r901102360 hed8oh-2x/100k14
r901127494 hed8op-2x/350k35s
r901127492 hed8op-2x/100k35s
r901127477 hed8oa-2x/350k35as
r901127474 hed8oa-2x/350k35s
r901127471 hed8oa-2x/350k35a
r901127461 hed8oa-2x/100k35s
r901126944 hed8op-2x/100xnz14ks
r901126696 hed8oa-2x/100k35ks
r901126235 hed8oa-2x/50xnz14
r901126233 hed8oa-2x/350xnz14s
r901126082 hed8op-2x/350k14av
r901125810 hed8oh-2x/200k14kwv
r901125561 hed8oa-2x/350k35
r901125068 hed8oh-2x/100k35ks
r901124650 hed8op-2x/630k14ks
r901123283 hed8oa-2x/100p040k14s
r901122137 hed8op-2x/350xnz14ks
r901122124 hed8op-2x/350k14kwv
r901119175 hed8oa-2x/630k14kw/12
r901117070 hed8oa-2x/50k14v
r901111201 hed8oa-2x/100k14s/12
r901111200 hed8oa-2x/100k14sv
r901111198 hed8oa-2x/200k14a/12
r901108531 hed8op-2x/350k14asv
r901108529 hed8op-2x/630k14v
r901108522 hed8oa-2x/200k14asv
r901108521 hed8oa-2x/200u170k14s
r901108518 hed8oa-2x/350k14a/12
r901108517 hed8oa-2x/350k14asv
r901108512 hed8oa-2x/630k14as
r901108268 hed8oh-2x/100k14sv
r901108265 hed8op-2x/100k14v
r901108258 hed8op-2x/200k14ks
r901108252 hed8op-2x/350p140k14s
r901108249 hed8op-2x/50k14kw
r901108245 hed8oa-2x/200k14kwv
r901108236 hed8oh-2x/350k14as
r901108229 hed8op-2x/100k14a
r901108147 hed8op-2x/630k14
r901108023 hed8op-2x/200k14a
r901108018 hed8op-2x/200k14kw
r901108012 hed8op-2x/50k14ks
r901108009 hed8oa-2x/350k14s/12
r901108007 hed8oh-2x/50k14a
r901108003 hed8op-2x/200k14as
r901108001 hed8op-2x/50k14v
r901107999 hed8op-2x/50k14a
r901107997 hed8op-2x/100k14ks
r901107923 hed8oa-2x/200u120k14s
r901107922 hed8oa-2x/350k14sv
r901107915 hed8oa-2x/630k14s
r901107914 hed8op-2x/350k14ks
r901107913 hed8op-2x/350k14sv
r901107805 hed8oa-2x/200k14sv
r901107796 hed8oa-2x/350k14v
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