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3HAC025873-001
3HAC025873-001
3HAC025873-001
3HAC025873-001
該系統(tǒng)具有計算機的通訊功能，PLC變頻器均提供有RS232或485接口PLC可選用西門子的S7-200計算機可以與一套或多套系統(tǒng)進行通訊，利用計算機同時可以監(jiān)測：電流、電壓、頻率、轉(zhuǎn)速、壓力等也可以控制變頻器的各類參數(shù)。
此外該系統(tǒng)還具有手動/自動操作，故障報警，運行狀態(tài)，電流，電壓、頻率狀態(tài)顯示缺水保護等功能。
4.運行特征
以三臺水泵的恒壓供水系統(tǒng)為例，系統(tǒng)在自動運行方式下，可編程控制器控制變頻器軟啟動1#泵，此時1#泵進入變頻運行狀態(tài)，其轉(zhuǎn)速逐漸升高，當供水量Q<1/3Qmax時（Qmax為三臺水泵全部工頻運行時的最大流量），可編程控制器CPU根據(jù)根據(jù)供水量的變化自動調(diào)節(jié)1#泵的運行轉(zhuǎn)速，以保證所需的供水壓力。當用水量Q在1/3Qmax當外供水量減少至1/3Qmax5.系統(tǒng)經(jīng)濟效益分析及系統(tǒng)優(yōu)點
5.1經(jīng)濟效益分析
5.2系統(tǒng)優(yōu)點
5.2.1恒壓供水技術因采用變頻器改變電動機電源頻率，而達到調(diào)節(jié)水泵轉(zhuǎn)速改變水泵出口壓力，比靠調(diào)節(jié)閥門的控制水泵出口壓力的方式，具有降低管道阻力大大減少截流損失的效能。
5.2.2由于變量泵工作在變頻工況，在其出口流量小于額定流量時，泵轉(zhuǎn)速降低，減少了軸承的磨損和發(fā)熱，延長泵和電動機的機械使用壽命。
5.2.3因?qū)崿F(xiàn)恒壓自動控制，不需要操作人員頻繁操作，降低了人員的勞動強度，節(jié)省了人力。
5.2.4水泵電動機采用軟啟動方式，按設定的加速時間加速，避免電動機啟動時的電流沖擊，對電網(wǎng)電壓造成波動的影響，同時也避免了電動機突然加速造成泵系統(tǒng)的喘振。
5.2.5由于變量泵工作在變頻工作狀態(tài)，在其運行過程中其轉(zhuǎn)速是由外供水量決定的，故系統(tǒng)在運行過程中可節(jié)約可觀的電能，其經(jīng)濟效益是十分明顯的。由于其節(jié)電效果明顯，所以系統(tǒng)具有收回投資快，而長期受益，其產(chǎn)生的社會效益也是非常巨大。
Fireye Program Module Type 71D61廈門光沃熱賣.低價銷售
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FIREYE M SERIES TIMING CARD MT 60-10 8012
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PARKER FIREYE M-SERIES II FLAME MODULAR CONTROL NEW
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FIREYE 72DUVS4 D-SERIES AMPLIFIER UV SELF CHECK
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FIREYE 129-66 C SERIES BASE KIT.
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FIREYE EC600 RED FLAME MONITOR COVER
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FIREYE 72DIR1 AMPLIFIER BURNER CONTROL
Fireye MEP104 Programmer Module Non-Recycle 10 Second
Fireye PSA 6F Air/Gas Pressure Switch 1-6" Auto
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Fireye E350-3 3' Ribbon Expansion Cable
Fireye MP100E Programmer Module
FIREYE EP160 PROGRAMMER MODULE
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Fireye 45UV5-1006 UV Scanner
FIREYE 45UV3-1050 NEW UV SCANNER 45UV31050
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FIREYE PROGRAMMER MODULE FLAME MONITOR EP161
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FIREYE 45RM4-1000 USPP 45RM41000
Fireye MEP100 Programmer Mod Relight Bulletin MP-5101
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FIREYE MP230H PROGRAMMER
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Fireye PSML12F Air/Gas Low Pressure Switch 2-12 wc
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FIREYE 4-263-1 FIRETRON CELL NOS FE4 42631 NEW
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FIREYE 60-2470-1 USPP 6024701
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Fireye Auto-Check Infrared Amplifier 72DIR1
FIREYE 60-1728-1 NSFP 6017281
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Fireye MT30-10 Purge Timing Card MT3010 New
FIREYE MEIR4 IR AMPLIFIER
FIREYE SELF CHECK UV SCANNER 45UV5-1000
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FIREYE FLAME MONITOR PROGRAMMER MODULE EP380
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Returns: Accepted within 3 days
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Fireye MART1 Flame Rod Amplifier New in Box
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FIREYE 71D80 NSFP 71D80
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FIREYE 70D10 USPP 70D10
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1953 Fireye - Fire, Biscuits Ames, Massachusetts - AD
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Case Cover Faceplate Snap on Motorola Droid A855 FireYe
FIREYE 817-2261 USPP 8172261
Fireye 70D10 Solid State Burner Management Series-D
FIREYE DE601-104E USPP DE601104E
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FIREYE 25RU8 6580 FLAME SAFEGUARD CONTROLLER NIB
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FIREYE 72DUV1 ULTRAVIOLET AMPLIFIER 64930
FIREYE PXMS-200 NSPP PXMS200
Fireye Flame Scanner 24 VDC 45FS1-1000
FIREYE EUVS4
FIREYE EP382 USPP EP382
FIREYE PS348-6 USPP PS3486
FIREYE EP163 USPP EP163
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FIREYE 4-314 NSFP 4314
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FIREYE EP 160 PROGRAMMER
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FIREYE 4-314 NSPP 4314
FIREYE EP381 NSFP EP381
FIREYE E100 USPP E100
FIREYE EP160 PROGRAMMER MODULE
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Returns: Not accepted
FIREYE 9726 0021
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Fireye Programmer Module MP230 ! NIB !
FIREYE 70D40
FIREYE E1R1 INFRARED AUTO CHECK AMPLIFIER MODULE NEW
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Fireye 65UV5-1000 Unitized Flame Scanner 24VDC 3Pcs
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Fireye 65UV5-1000 Integrated Flame Scanner
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Fireye Type 25RU8 Model 4580 Flame Safeguard
Fireye Type 25RU8 Model 6580 Flame Safeguard
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Fireye Flame Safeguard Type 29RF5 Model 1001
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Fireye 45UV5-1000 (45UV51000) U.V. Flame Scanner
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FIRESTONE AUDIO FIREYE 2 HEADPHONE AMPLIFIER/DAC.
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