Rexroth differential pressure switch R928028410 WE-2SP-M12X1 * * * The stock is provided by Shanghai Weimi Electromechanical Equipment Co., Ltd., which is one of the key competitive products of Weimi. Welcome to inquire
Company name: Shanghai Weimi Electromechanical Equipment Co., Ltd
Contact: Song Kui
whole country pin Sales contact information:***
Mobile/WeChat * * * QQ: 361931277
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ADD: Room 907, Building 2, Phase 2, Yuzhou Jinqiao, No. 100, Jinyu Road, Pudong New Area, Shanghai
Differential pressure switch is a special kind of control switch, which is based on the pressure difference between the components and relies on electrical signals to transmit information to control the switch closing or opening. [1] In general, it is to use two The Conduit To send an electrical signal. When the pressure difference at the two ends of the series liquid pipe increases (or decreases) and exceeds the set value of the controller, a signal is sent to control Reversing valve Reverse or monitor the lubrication system. be valve Then open (or close), so that the differential pressure at the two ends of the system liquid pipe decreases, so that the system can operate normally
The valve body of the differential pressure switch and the travel switch are assembled on a base plate. The lubricating grease enters the right chamber of the differential pressure switch valve body piston from the main pipe B under the pressure, and the main pipe A is unloaded. Once the pressure difference between the two main pipes reaches the set value, the piston moves to the left against the spring force in the left chamber, pushes the travel switch to close contacts 1 and 2, sends a pulse signal to the system electric cabinet, and orders the reversing valve to reverse. At this time, the main pipe A is pressurized, B is unloaded, the piston is centered under the action of the spring in the chamber at the two ends, the travel switch contacts 1 and 2 are disconnected, and the contact bridge is in the middle position.
The system starts to work in the second cycle. Once the pressure difference between the main pipes A and B reaches the set value again, the piston moves to the right, the travel switch contacts 3 and 4 close, and the pulse signal reverses the direction of the reversing valve in the system again to start the next cycle.
The application of differential pressure switch in HVAC system is mainly controlled according to the resistance and flow curve of HVAC equipment, The water side heat exchangers (casing, shell and tube, tube sheet and common plate heat exchangers), water filters, valves and pumps in HVAC all have performance curves of pressure drop and flow. As long as the measured pressure difference on both sides of the pressure difference switch is compared with the preset value, the flow can be accurately controlled.
Rexroth differential pressure switch R928028410 WE-2SP-M12X1
R979048901 10TEN1000-H10XLA00-P2,2-M-S10 WE-2SP
R900541559 CONNECTION PLUG WE -2 MAGNETE &
R900833240 CONNECTION PLUG WE -2 MAGNETE Z &
R961002245 SEAL KIT LFA125WE-2X/
R900312427 SEAL KIT LFA40/50D/WE-280-6X/
R900848914 STECKER WE -2 MAGNETE Z6 (110MM) *BG
R928028410 WE-2SP-M12X1
R928028411 WE-2SPSU-M12X1
Main differences between pressure switch and differential pressure switch:
1. The structure is different:
(1) The pressure switch adopts the pressure sensor and transmission circuit with high stability and high precision, and through the special use of CPU modular signal processing technology, it can detect and display the medium pressure signal, start the emergency signal and control signal output.
(2) The differential pressure switch is composed of two pressure elements with high sensitivity. If they change, the switch mechanism will act to control equipment such as motor driven valve. The switch mechanism provides SPDT non quick action (floating) action, so the shared movable contact will contact one of the two fixed contacts or stay between them (no contact).
2. The working principle is different:
(1) When the pressure in the system is higher or lower than the rated safety pressure, the inner membrane of the sensor moves instantaneously and pushes the switch connector to connect or disconnect through the connecting guide rod. When the pressure drops or rises to the rated recovery value, the membrane resets instantaneously and the switch resets automatically, or simply when the measured pressure exceeds the rated value, the free end of the elastic element will produce displacement, Push the switch element directly or after comparison to change the on-off state of the switch element, so as to control the measured pressure.
(2) The differential pressure switch is composed of two capsule cavities, which are sealed by two sealing diaphragms and one differential pressure sensing diaphragm respectively. The high pressure and low pressure respectively enter the high pressure chamber and the low pressure chamber of the differential pressure switch, and the differential pressure sensed deforms the pressure sensing film. Through mechanical structures such as railing springs, the microswitch at the upper end is finally started to output electrical signals.
R900773022 HEDE10A1-1X/100K41G24V
R900773024 HEDE10A1-1X/250K41G24V
R900773025 HEDE10A1-1X/400K41G24V
R900773028 HEDE10A1-1X/600K41G24V
R901022831 HEDE10A1-2X/100/K41G24/1/V
R901212719 HEDE10A1-2X/100/K41G24/1/V/SO1
R901023071 HEDE10A1-2X/100/K41G24/2/V
R901022922 HEDE10A1-2X/250/K41G24/1/V
R901023091 HEDE10A1-2X/250/K41G24/2/V
R901022978 HEDE10A1-2X/400/K41G24/1/V
R901023142 HEDE10A1-2X/400/K41G24/2/V
R901274586 HEDE10A1-2X/400=K41G24/1/V
R901023040 HEDE10A1-2X/600/K41G24/1/V
R901023147 HEDE10A1-2X/600/K41G24/2/V
R901110456 HED8OA-2X/200K14V
R901108236 HED8OH-2X/350K14AS
R901108003 HED8OP-2X/200K14AS
R901107922 HED8OA-2X/350K14SV
R901107790 HED8OP-2X/100K14AS
R901107128 HED8OH-2X/100K14A
R901107126 HED8OA-2X/200K14KS
R901107093 HED8OP-2X/200K14S
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R901106509 HED8OP-2X/100K14S
R901106505 HED8OH-2X/100K14AS
R901106504 HED8OP-2X/50K14S
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R901106453 HED8OP-2X/350K14
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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
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R901102349 HED8OH-2X/50K14
R901101698 HED8OA-2X/50K14
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R901099816 HED8OH-2X/350K14AV
R901099815 HED8OH-2X/350K14V
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R901137611 HED8OA-2X/100XNZ14A
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R901136386 HED8OH-2X/630K14KS
R901135255 HED8OA-2X/100K14A/12
R901135061 HED8OA-2X/100P070K14S
R901134765 HED8OA-2X/630K14/12
R901134010 HED8OA-2X/350K14KSV
R901133293 HED8OA-2X/200XNZ14
R901131275 HED8OP-2X/50K35
R901131246 HED8OA-2X/350F105K14S
R901130967 HED8OA-2X/630K14SV
R901128257 HED8OH-2X/50F004K14SV
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
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R901110450 HED8OA-2X/350K14KWV
R901110447 HED8OA-2X/350K14V/12
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R901110166 HED8OA-2X/50K14ASV
R901110164 HED8OA-2X/50K14AV
R901110160 HED8OA-2X/50K14KSV
R901110155 HED8OA-2X/50K14KWV
R901110149 HED8OA-2X/50K14SV
R901110147 HED8OA-2X/50K14SV/12
R901109541 HED8OA-2X/630K14KS
R901109538 HED8OA-2X/630K14KW
R901109535 HED8OH-2X/100K14ASV
R901109532 HED8OH-2X/100K14KWV
R901109530 HED8OH-2X/200K14ASV
R901109074 HED8OH-2X/200K14SV
R901109071 HED8OH-2X/350K14ASV
R901109069 HED8OH-2X/350K14KWV
R901109065 HED8OH-2X/350K14SV
R901109050 HED8OH-2X/50K14ASV
R901109049 HED8OH-2X/50K14KWV
R901109035 HED8OH-2X/630K14AS
R901109029 HED8OH-2X/630K14S
R901109027 HED8OP-2X/100P070K14S
R901109004 HED8OP-2X/200K14SV
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
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R901102349 HED8OH-2X/50K14
R901101698 HED8OA-2X/50K14
R901101640 HED8OH-2X/350K14
R901099817 HED8OH-2X/350K14KSV
R901099816 HED8OH-2X/350K14AV
R901099815 HED8OH-2X/350K14V
R901099813 HED8OH-2X/200U150K14V
R901099811 HED8OH-2X/200K14KS
R901099809 HED8OH-2X/200K14A
R901099808 HED8OH-2X/200K14
R901099800 HED8OH-2X/50K14KSV
R901099798 HED8OH-2X/50K14AV
R901099796 HED8OH-2X/50K14V
R901099792 HED8OH-2X/200K14KSV
R901099790 HED8OH-2X/200K14AV
R901099789 HED8OH-2X/200K14V
R901099788 HED8OH-2X/100K14KSV
R901099780 HED8OH-2X/100K14AV
R901099775 HED8OH-2X/100K14V
R901095551 HED8OA-2X/100K14KS
R901095375 HED8OH-2X/100K14S
R901094159 HED8OA-2X/100K14KW
R901091138 HED8OP-2X/350K14AS
R900571917 HED8OP1X/350K14S
R900563879 HED8OH1X/200K14
R900536049 HED8OH1X/350K14
R900049550 HED8OP1X/100K14A
R900031147 HED8OP1X/350K14KW
Rexroth differential pressure switch R928028410 WE-2SP-M12X1
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