力士乐柱塞式压力继电器HED8OP-20/350K14

压力开关采用高精度、高稳定性能的压力传感器和变送电路，再经专用 CPU模块化信号处理技术，实现对介质压力信号的检测、显示、报警和控制信号输出。压力开关可以广泛用于石油、化工、冶金、电力、供水等领域中对各种气体、液体的表压、绝压的测量控制，是工业现场理想的智能化测控仪表。
压力开关主要类别包括常开式和常闭式。主要特点是：
1、采用英制管螺纹快速接头或铜管焊接式安装结构，安装灵活，使用方便，无需特殊的安装固定。
2、插片式导线式连接方可供用户任意选定。
3、密封式不锈钢感应器安全可靠。
4、压力范围内可根据用户任意选定的压力值进行制造。

武汉百士自动化设备有限公司专注于欧美品牌液压、气动、工控自动化备件销售，质量保障，价格优惠；销售热线：15307180902 ，联系人：雷青。联系电话：027-87680708-606。热诚欢迎新老客户咨询购买！

液压油是不可压缩液体，因此利用液压油是无法蓄积压力能的，必须依靠其他介质来转换、蓄积压力能。例如，利用气体（氮气）的可压缩性质研制的皮囊式充气蓄能器就是一种蓄积液压油的装置。皮囊式蓄能器由油液部分和带有气密封件的气体部分组成，位于皮囊周围的油液与油液回路接通。当压力升高时油液进入蓄能器，气体被压缩，直到系统管路压力不再上升；当管路压力下降时压缩空气膨胀，将油液压入回路，从而减缓管路压力的下降。

蓄能器按加载方式可分为
弹簧式
它依靠压缩弹簧把液压系统中的过剩压力能转化为弹簧势能存储起来，需要时释放出去。其结构简单，成本较低。但是因为弹簧伸缩量有限，而且弹簧的伸缩对压力变化不敏感，消振功能差，所以只适合小容量、低压系统（P≦1.0～1.2MPa），或者用作缓冲装置。
活塞式
它通过提升加载在密封活塞上的质量块把液压系统中的压力能转化为重力势能积蓄起来。其结构简单、压力稳定。缺点是安装局限性大，只能垂直安装；不易密封；质量块惯性大，不灵敏。这类蓄能器仅供暂存能量用。

这两种蓄能器因为其局限性已经很少采用。但值得注意的是，有些研究部门从经济角度考虑在这两种蓄能器的结构上做一些改进，在一定程度上克服了其缺点。比如国内某厂采用改进弹簧式蓄能器的结构。加大弹簧外径（大于液压腔直径）、限定弹簧行程（将弹簧大载荷限定在许用极限载荷以内）的方法提高了蓄能器的工作压力和容量，降低了成本。

气体式
它以波义尔定律（PVn=K=常数）为基础，通过压缩气体完成能量转化，使用时首先向蓄能器充入预定压力的气体。当系统压力超过蓄能器内部压力时，油液压缩气体，将油液中的压力转化为气体内能；当系统压力低于蓄能器内部压力时，蓄能器中的油在高压气体的作用下流向外部系统，释放能量。选择适当的充气压力是这种蓄能器的关键。这类蓄能器按结构可分为管路消振器、气液直接接触式、活塞式、隔膜式、气囊式等。

蓄能器有两种用途。①当低速运动时载荷需要的流量小于液压泵流量，液压泵多余的流量储入蓄能器，当载荷要求流量大于液压泵流量时，液体从蓄能器放出来，以补液压泵流量之不足。②当停机但仍需维持一定压力时，可以停止液压泵而由蓄能器补偿系统的泄漏，以保持系统的压力。

蓄能器也可用来吸收液压泵的压力脉动或吸收系统中产生的液压冲击压力。蓄能器中的压力可以用压缩气体、重锤或弹簧来产生，相应地蓄能器分为气体式、重锤式和弹簧式。气体式蓄能器中的气体与液体直接接触者，称为接触式，其结构简单，容量大，但液体中容易混入气体，常用于水压机上。气体与液体不接触的称为隔离式，常用皮囊和隔膜来隔离，皮囊体积变化量大，隔膜体积变化量小，常用于吸收压力脉动。重锤式容量较大，常用于轧机等系统中，供蓄能用。

力士乐柱塞式压力继电器HED8OP-20/350K14

R901106453 HED8OP-20/350K14
R901107326 HED8OP-20/350K14A
R901091138 HED8OP-20/350K14AS
R901108531 HED8OP-20/350K14ASV
R901126082 HED8OP-20/350K14AV
R901107914 HED8OP-20/350K14KS
R901107129 HED8OP-20/350K14KW
R901122124 HED8OP-20/350K14KWV
R901102365 HED8OP-20/350K14S
R901107913 HED8OP-20/350K14SV
R901107330 HED8OP-20/350K14V
R901127494 HED8OP-20/350K35S
R901434285 HED8OP-20/350P120K14KS
R901108252 HED8OP-20/350P140K14S
R901456336 HED8OP-20/350P280K14S
R901107083 HED8OP-20/50K14
R901107999 HED8OP-20/50K14A
R901107396 HED8OP-20/50K14AS
R901123736 HED8OP-20/50K14AV
R901108012 HED8OP-20/50K14KS
R901108249 HED8OP-20/50K14KW
R901106504 HED8OP-20/50K14S
R901140517 HED8OP-20/50K14SV
R901108001 HED8OP-20/50K14V
R901131275 HED8OP-20/50K35
R901336910 HED8OP-20/50K35S
R901159161 HED8OP-20/50K35V
R901245432 HED8OP-20/50U025K14AV
R901108147 HED8OP-20/630K14
R901210429 HED8OP-20/630K14A
R901280745 HED8OP-20/630K14AS
R901171255 HED8OP-20/630K14ASV
R901124650 HED8OP-20/630K14KS
R901315271 HED8OP-20/630K14KW
R901106449 HED8OP-20/630K14S
R901108529 HED8OP-20/630K14V
R901437158 HED8OP-20/630K35
R901251521 HED8OP-20=50K14AS
R987437823 HED8OH-20/100K14SSETTO80BARFALLING
R987411811 HED8OP20/350K14SSETTO280BAR
R971012678 HED8OA-20/350K14S(12.3MPA)
R971012679 HED8OA-20/350K14S(17.2MPA)
R971012681 HED8OA-20/350K14S(21.6MPA)
力士乐REXROTH信号编码器
力士乐REXROTH电子信号编码器
R900032835 VT10468-3X/B0-R0
R900020321 VT10468-3X/B0-RX
R900029055 VT10468-3X/B1-RX
R900051872 VT10468-3X/B2-RX
R900248704 VT10468-3X/B3-RX
R900078012 VT10468-3X/B4-RX
R901174376 VT10468-3X/B6-RX
R900207443 VT10468-3X/B7-RX
R900020307 VT10468-3X/F0-R0
R900020360 VT10468-3X/F0-RX
R900074164 VT10468-3X/F1-R0
R900020309 VT10468-3X/F1-RX
R900053072 VT10468-3X/F2-R0
R900020911 VT10468-3X/F2-RX
R900020325 VT10468-3X/F3-R0
R900020593 VT10468-3X/F3-RX
R900070971 VT10468-3X/F4-RX
R900020306 VT10468-3X/F5-RX
R900020365 VT10468-3X/F6-R0
R900020328 VT10468-3X/F6-RX
R900020914 VT10468-3X/F7-RX
R901237812 VT10468-3X/F7-RX/24VDC
R900207352 VT10406-3X/BX0-2S-RXY
R900705603 VT10406-3X/BXY-0S-RXY
R900075938 VT10406-3X/BXY-1S-RXY
R901214882 VT10406-3X/BXY-4S-R00
R900079605 VT10406-3X/FXY-0K-RXY
R900031910 VT10406-3X/FXY-0S-R00
R900020746 VT10406-3X/FXY-0S-RXY
R900082731 VT10406-3X/FXY-1K-RXY
R900066640 VT10406-3X/FXY-1S-R00
R900020311 VT10406-3X/FXY-1S-RXY
R900724109 VT10406-3X/FXY-1S-RXY/24VDC
R900052968 VT10406-3X/FXY-2K-RXY
R900031616 VT10406-3X/FXY-2S-R00
R900020355 VT10406-3X/FXY-2S-RXY
R901038961 VT10406-3X/FXY-3K-RXY
R900033192 VT10406-3X/FXY-3S-R00
R901010925 VT10406-3X/FXY-4K-RXY
R900020777 VT10406-3X/FXY-6K-RXY
R900769266 VT10406-3X/FXY-6S-RXY
R900063777 VT10406-3X/FXY-7S-RXY
R901090359 VT10399-5X/FXY-B90T-R00
R900750734 VT10399-5X/FXY-B9RT-RXY
R901206765 VT10399-5X/FXY-D90A-R00
R900069817 VT10399-5X/FXY-D9RA-RXY
R900029275 VT10399-5X/FXY-D9RT-RXY
力士乐REXROTH电气配件
力士乐REXROTH放大器接线座和卡座
力士乐REXROTH连接适配器
R900062692 VT10812-2X/32D
R900062584 VT10812-2X/48F
R900713826 VT10812-2X/64G
力士乐REXROTH全闭式板卡插箱
R900784153 VT12302-3X/1
R978009974 VT12302-3X/2-64G DUAL CARD HOLD
力士乐REXROTH 19英寸机架
R900016481 VT19101-1X/1EINFACHMAGAZIN160MM
R900016483 VT19101-1X/2EINFACHMAGAZIN220MM
R901222062 VT19101-1X/3EINFACHMAGAZIN220MM
R900016482 VT19102-1X/1DOPPELMAGAZIN160MM
R900016484 VT19102-1X/2DOPPELMAGAZIN220MM
R901178509 VT19103-1X/1DREIFACHMAGAZIN160MM
力士乐REXROTH安装卡架
R910908569 VT3002-2X/32RD29928
1834486002 VT3002-2-2X/32D
R900776300 VT3002-2X/32=CSA(KARTENHALTER)
R900209648 VT3002-1-2X/15H
R900020153 VT3002-1-2X/32D
1834486001 VT3002-1-2X/32F
R900020154 VT3002-1-2X/48F
R900991843 VT3002-1-2X/64G
力士乐REXROTH电源和稳定设备
力士乐REXROTH电源模块
R900010937 VT11006-1X/
力士乐REXROTH电容器模块
R900020293 VT11110-1X/
力士乐REXROTH电源模块
R900554828 VT11116-1X/ (MOD.VT11006-1X/+-10V)
力士乐REXROTH集成式供电单元
R900020164 VT-NE30-1X/
R987174925 VT-NE30-1X/
R901082348 VT-NE30-2X/
R900020165 VT-NE31-1X/
R900080049 VT-NE32-1X/
力士乐REXROTH调试设备
力士乐REXROTH带测试装置的维修箱
R900967021 VT-SVTSY-1-1X/1-0-0-1-0/(PRUEFG.+KOFFER)
R900965027 VT-SVTSY-1-1X/1-0-0-1-1/(PRUEFG.+KOFFER)
R901119774 VT-SVTSY-1-1X/1-0-1-0-1/(PRUEFG.+KOFFER)
R900720411 VT-SVTSY-1-1X/1-1-0-0-0/(PRUEFG.+KOFFER)
R901041006 VT-SVTSY-1-1X/1-1-0-0-1/(PRUEFG.+KOFFER)
R900969193 VT-SVTSY-1-1X/1-1-1-0-0/(PRUEFG.+KOFFER)
R901218892 VT-SVTSY-1-1X/1-1-1-0-1/(PRUEFG.+KOFFER)
R900724784 VT-SVTSY-1-1X/1-1-1-1-0/(PRUEFG.+KOFFER)
R900962017 VT-SVTSY-1-1X/1-1-1-1-1/(PRUEFG.+KOFFER)
力士乐REXROTH带测试单元的维修箱
R900945527 VT-VETSY-1-1X/1-1-0-0-0/(PRUEFG.+KOFFER)
R900775241 VT-VETSY-1-1X/1-1-0-0-1/(PRUEFG.+KOFFER)
R900943515 VT-VETSY-1-1X/1-1-0-1-0/(PRUEFG.+KOFFER)
R900944079 VT-VETSY-1-1X/1-1-0-1-1/(PRUEFG.+KOFFER)
R978911933 VT-VETSY-1-1X/1-1-0-A-0
R900962782 VT-VETSY-1-1X/1-1-1-0-0/(PRUEFG.+KOFFER)
R900763220 VT-VETSY-1-1X/1-1-1-0-1/(PRUEFG.+KOFFER)
R900951688 VT-VETSY-1-1X/1-1-1-1-0/(PRUEFG.+KOFFER)
R900951686 VT-VETSY-1-1X/1-1-1-1-1/(PRUEFG.+KOFFER)
R978913860 VT-VETSY-1-1X/1-1-1-A-0
R901253174 VT-VETSY-1-1X/1-2-0-0-0/(PRUEFG.+KOFFER)
R900751296 VT-VETSY-1-1X/1-2-0-1-0/(PRUEFG.+KOFFER)
R901031171 VT-VETSY-1-1X/1-2-0-1-1/(PRUEFG.+KOFFER)
R901049737 VT-VETSY-1-1X/1-2-1-1-0/(PRUEFG.+KOFFER)
R978050422 VT-VETSY-1-1X/1-2-1-1-0/USA
R900951687 VT-VETSY-1-1X/1-2-1-1-1/(PRUEFG.+KOFFER)
R978911206 VT-VETSY-1-1X/1-2-1-A-0
力士乐REXROTH监测模块
力士乐REXROTH用于监测和限制比例阀电流的模块
R901042058 VT-MUXA2-1-1X/V0/1A
R901254583 VT-MUXA2-2-1X/V0/1A
力士乐REXROTH插头和配电缆连接
力士乐REXROTH连接K4阀插头
力士乐REXROTH标准不带灯插头
R987293407 PLUG-IN CONNECTOR 03POLZ4(A)GRAU
R987293408 PLUG-IN CONNECTOR 03POLZ4(B)SCHW
R987293409 PLUG-IN CONNECTOR 03POLZ4(B)SCHWARZ
R900338518 PLUG-IN CONNECTOR 3P Z4 A GDM2009-RE &
R900008908 PLUG-IN CONNECTOR 3P Z4 A GDM2011 BG
R900074683 PLUG-IN CONNECTOR 3P Z4 A GRAU SPEZ
R900338519 PLUG-IN CONNECTOR 3P Z4 B GDM2009-RE &
R900008909 PLUG-IN CONNECTOR 3P Z4 B GDM2011-RE &
R900840801 PLUG-IN CONNECTOR 3P Z4 B SILIKON BG
R900074684 PLUG-IN CONNECTOR 3P Z4 B SW SPEZ
R900020563 PLUG-IN CONNECTOR 3P Z4 GDML2011GE1-GR
R900020562 PLUG-IN CONNECTOR 3P Z4 GDML2011GE1G-SW
R901035402 PLUG-IN CONNECTOR 3P Z4 M GR BG
R901017010 PLUG-IN CONNECTOR 3P Z4 M GR SPEZ
R901035403 PLUG-IN CONNECTOR 3P Z4 M SW BG
R901017011 PLUG-IN CONNECTOR 3P Z4 M SW SPEZ
R901404414 PLUG-IN CONNECTOR 3P Z4 M20 SW
R900017759 PLUG-IN CONNECTOR 3P Z4-SW LPG-V SPEZ
R900012672 PLUG-IN CONNECTOR 3P Z42 GDMC2011-RE-GR
R900765033 PLUG-IN CONNECTOR 3P Z4L-SW 24-240V AC&
力士乐REXROTH标准不带灯，带电缆插头
R913008518 PLUG-IN CONNECTOR 3P Z4 M SW SPEZ +5M
R900217134 PLUG-IN CONNECTOR 3P Z4 SW +10MSPEZ
R901269455 PLUG-IN CONNECTOR 3P Z4 SW +10M XN1
R900032013 PLUG-IN CONNECTOR 3P Z4-GR +5M SPEZ
R900032019 PLUG-IN CONNECTOR 3P Z4-GR +3M SPEZ&
R900032020 PLUG-IN CONNECTOR 3P Z4-SW +3M SPEZ
R900032014 PLUG-IN CONNECTOR 3P Z4-SW +5M SPEZ
力士乐REXROTH标准不带灯，带电缆插头（ATEX）
R901200582 CABLE SET DS2513 +12M ATEX
R901200418 CABLE SET DS2513 +3M ATEX
R901200460 CABLE SET DS2513 +5M ATEX
力士乐REXROTH标准不带灯插头
R900004823 PLUG-IN CONNECTOR 3P Z45 A GDM201 BG&
R900840795 PLUG-IN CONNECTOR 3P Z45 A SILKON BG
R900011039 PLUG-IN CONNECTOR 3P Z45 B GDM201 BG&
力士乐REXROTH带灯插头
R900057292 PLUG-IN CONNECTOR 3P Z5L 12-240V SPEZ
R900313925 PLUG-IN CONNECTOR 3P Z5L A 90-130V BG
R900313922 PLUG-IN CONNECTOR 3P Z5L A LED12V BG
R900313923 PLUG-IN CONNECTOR 3P Z5L A LED24V BG
R900313924 PLUG-IN CONNECTOR 3P Z5L A LED42-60V BG
R900313931 PLUG-IN CONNECTOR 3P Z5L B 180-240V BG
R900313927 PLUG-IN CONNECTOR 3P Z5L B LED12V BG
R900313928 PLUG-IN CONNECTOR 3P Z5L B LED24V BG
R900313929 PLUG-IN CONNECTOR 3P Z5L B LED42-60V BG
R901017022 PLUG-IN CONNECTOR 3P Z5L M 12-240V SP&
力士乐REXROTH带灯插头
R900057453 PLUG-IN CONNECTOR 3P Z55L 12-240V SPEZ
R900843812 PLUG-IN CONNECTOR 3P Z55L A 90-130V BG
R900843810 PLUG-IN CONNECTOR 3P Z55L A LED24V BG
R900843813 PLUG-IN CONNECTOR 3P Z55L B 90-130V BG
R900843811 PLUG-IN CONNECTOR 3P Z55L B LED24V BG
R900861302 PLUG-IN CONNECTOR 3P Z55L1 24V SPEZ BG&
R900861962 PLUG-IN CONNECTOR 3P Z55L2 24VDC SPEZ
力士乐REXROTH带灯，带电缆插头
R900217136 PLUG-IN CONNECTOR 3P Z4L +10MSPEZ
R900217137 PLUG-IN CONNECTOR 3P Z4L SW +10MSPEZ
R900217135 PLUG-IN CONNECTOR 3P Z4L SW +10MSPEZ
R900032049 PLUG-IN CONNECTOR 3P Z4L-GR +3M SPEZ
R900032025 PLUG-IN CONNECTOR 3P Z4L-GR +3M SPEZ&
R900032017 PLUG-IN CONNECTOR 3P Z4L-GR +5M SPEZ&
R900032050 PLUG-IN CONNECTOR 3P Z4L-S +3M SPEZ
R900032023 PLUG-IN CONNECTOR 3P Z4L-SW +3M SPEZ
R900032024 PLUG-IN CONNECTOR 3P Z4L-SW +3M SPEZ
R900032010 PLUG-IN CONNECTOR 3P Z4L-SW +5M SPEZ
R900032012 PLUG-IN CONNECTOR 3P Z4L-SW +5M SPEZ
R900032018 PLUG-IN CONNECTOR 3P Z4L-SW +5M SPEZ
力士乐REXROTH带灯插头，齐纳二极管电路
R996953832 PLUG-INCONNECTOR3P2XZ5L1-24VDC+KABEL
R900310995 PLUG-INCONNECTOR3PZ5L124VSPEZBG&
R900310994 PLUG-INCONNECTOR3PZ5L1ALED24VBG
R901017026 PLUG-INCONNECTOR3PZ5L1M24VSPEZ
力士乐REXROTH带灯，带电缆插头，齐纳二极管电路
R900217138 PLUG-INCONNECTOR3PZ4L1SW+10MSPEZ
R900032026 PLUG-INCONNECTOR3PZ4L1-G+3MSPEZ&
R900032021 PLUG-INCONNECTOR3PZ4L1-S+3MSPEZ&
R900032015 PLUG-INCONNECTOR3PZ4L1-S+5MSPEZ
力士乐REXROTH带灯插头，保护二极管
R987293410 PLUG-INCONNECTOR03POLZ5L224VDCSPEZ.
R901017027 PLUG-INCONNECTOR3PZ5L2M24VDCSPEZ
R900310997 PLUG-INCONNECTOR3PZ5L224VDCSPEZBG
R900310996 PLUG-INCONNECTOR3PZ5L2ALED24VBG
力士乐REXROTH带整流器插头
R900313933 PLUG-IN CONNECTOR 3P RZ5 24-2 SPEZ BG&
R901017025 PLUG-IN CONNECTOR 3P RZ5 M24 240V SPEZ
力士乐REXROTH带整流器插头
R900842566 PLUG-IN CONNECTOR 3P RZ55 24 SPEZ BG
力士乐REXROTH带灯带整流器插头
R976721045 PLUG-IN CONNECTOR 03POL RZ5L M 110V
R900057423 PLUG-IN CONNECTOR 3P RZ5L 24-24 SPEZ&
R901017029 PLUG-IN CONNECTOR 3P RZ5LM 24-240V SPEZ
R987318774 PLUG-IN CONNECTOR 3P RZ5LM 70-240V 5M
力士乐REXROTH带灯带整流器插头
R900057455 PLUG-IN CONNECTOR 3P RZ55L 24-2 SPEZ
R900848921 PLUG-IN CONNECTOR 3P RZ55L A 90-130V BG
R900848922 PLUG-IN CONNECTOR 3P RZ55L B 90-130V BG
力士乐REXROTH电缆连接双插头
R901207820 CABLE SET 3P Z60 113 24V
R901207825 CABLE SET 3P Z60 135 24V
力士乐REXROTH电缆连接双带灯插头
R901207819 CABLE SET 3P Z60L 113 24V
R901207824 CABLE SET 3P Z60L 135 24V
力士乐REXROTH电缆连接双带灯插头，齐纳二极管电路
R901205511 CABLE SET 3P Z60L8 113 24V
R901207823 CABLE SET 3P Z60L8 135 24V
力士乐REXROTH电缆连接双插头
R901207821 CABLE SET 4P Z61 113 230V +3M
R901207822 CABLE SET 4P Z61 113 230V +5M
R901207826 CABLE SET 4P Z61 135 230V +3M
R901207892 CABLE SET 4P Z61 135 230V +5M
力士乐REXROTH电缆连接双带灯插头
R901286065 CABLE SET 3P Z61L 113 24V +3MS
R901419523 CABLE SET 3P Z61L 150 24V +5MS
液压比例控制系统
以比例控制元件完成动力与运动方向控制，分为比例压力阀、比例流量阀、比例方向阀及比例方向流量阀，可为模拟量输入或数字量输入，视是否带反馈分为开环控制与闭环控制，一般获得频率不是很高(10HZ)以内，高频响阀可实现较高频率。
若精度要求不高可考虑使用电液比例控制系统，一般电液比例控制系统可达至以下精度
位置精度- 3 mm
速度精度带压力补偿器- 3%
加减速斜坡时间-0.5秒
压力带位移传感器的产品-比例压力阀设定的0.3% (如压力设定为200bar,精度可达0.6bar)
一般的多驱动器液压系统皆要求流量及压力控制，提供比例压力及流量控制系统
开环式比例压力及流量控制可用于定量泵及变量泵系统。
速度和流量比例控制的分别是:
流量控制只控制供油量,并不控制驱动元件的运动方向;
若系统负载及变速要求高，则要使用速度控制系统。
速度比例控制多用于自动化控制、注塑机、压力机等
使用闭环的主要原因:
保持设定值不受外来干扰所影响
→在不同的工作压力下保持稳定的速度
→在不同的输出力下保证相同位置
→在带偏载的情况下作同步移动
提高精度要求
→位置误差低于1 mm
→压力误差低于1 ba
→需要控制加减速度
高动态要求的系统
→模拟应用
→测验应用