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《销售热线：18030132582》
影响PLC控制系统的干扰源于一般影响工业控制设备的干扰源一样，大都产生在电流或电压剧烈变化的部位，这些电荷剧烈移动的部位就是噪声源，即干扰源。
干扰类型通常按干扰产生的原因、噪声的干扰模式和噪声的波形性质的不同划分。其中：按噪声产生的原因不同，分为放电噪声、偶发噪声等：按声音干扰模式不同，分为共模干扰和差模干扰是一种比较常用的分类方法。共模干扰是信号对地面的电位差，主要是由电网串入，、地电位差及空间电磁辐射在信号线上感应的共态电压所加形成。共模电压有时较大，特别是采用隔离性能差的电器供电室，变送器输出信号的共模电压普遍较高，有的可高达130V以上。共模电压通过不对称电路可转换成共模电压，直接影响测控信号，造成元器件坏，这种共模干扰可为直流、亦可谓交流。共模干扰是指用于信号两级间得干扰电压，主要由空间电磁场在信号间耦合感应及由不平衡电路转换共模干扰所形成的电压，这种让直接叠加在信号上，直接影响测量与控制精度。
联系人：张芳
热线：0592-5087951+++手机：18030132582
传真：0592-5165561（请注明张芳收，谢谢！）
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地址：厦门思明区湖滨东路湖光大厦8楼B
TESTON 5T WINDING INDICATOR TEMPERATURE 0-160C 4-1/2 IN GAUGE 6IN PROBE B273678
NEW ANDERSON PRESSURE 30-30PSI 4 IN GAUGE B286213
USG PRESSURE 0-60PSI 5 IN 1/4 IN NPT GAUGE B293385
HONEYWELL 196-04 0-30PSI 1-1/2 IN 1/8 IN NPT PRESSURE GAUGE B441482
MARSH LIQUID FILLED 0-60PSI 2-1/2 IN 1/4 IN NPT PRESSURE GAUGE B429516
MARSH INDUSTRIAL 0-700KPA PRESSURE 0-100PSI 4-1/2IN DIAL 1/4IN NPT GAUGE B365475
NEW ASHCROFT 45-1379ASL-2L PRESSURE 0-2500KPA 4 IN 1/4 IN NPT GAUGE B355737
GAST AA640 0-760MM-HG VAC 0-30IN-HG 2 IN 1/4 IN NPT GAUGE D466969
TRERICE 52-2989 PRESSURE 0-300PSI 5 IN 3/4 IN NPT GAUGE B278400
NEW USG 166320 SPEC CBM P500K 0-30PSI 1-1/2 IN 1/8 IN NPT PRESSURE GAUGE B397118
WEKSLER GP2-113-3 REGAL PRESSURE 0-10IN-H2O 5 IN 1/4 IN NPT GAUGE B340387
TRERICE 9185-05 PRESSURE 0-160PSI 2-1/2 IN 1/4 IN GAUGE B284864
DWYER 2008 MAGNEHELIC PRESSURE 0-8IN-H2O WATER 4IN DIAL 1/4 IN NPT GAUGE B320616
DWYER 2010C MAGNEHELIC PRESSURE 0-10IN-H2O 4-3/4 IN 1/8IN NPT GAUGE B350631
PSI-TRONIX 1/4 IN NPT PRESSURE GAUGE D395462
ASHCROFT ASSORTED TEMPERATURE 0-200F 5 IN 1/2 IN GAUGE B214292
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NEW ANDERSON EL077010071111A STAINLESS 0-300PSI 3-1/2IN PRESSURE GAUGE D416268
DWYER 2000-250 PAC PRESSURE 0-250PA 4 IN GAUGE B233590
WEISS 0-15PSI4 IN 1/4 IN NPT PRESSURE GAUGE B470847
USG 63148-62-9 LIQUID FILLED 0-60PSI 2-1/2 IN 1/4 IN NPT PRESSURE GAUGE B429489
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USG PRESSURE 0-60PSI 2-1/4IN FACE 1/4IN NPT GAUGE D308202
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NEW DWYER 2015 C MAGNEHELIC 0-15IN-H2O 4 IN 1/8 IN NPT PRESSURE GAUGE D448752
VERSA AMMONIA PRESSURE -30IN-HG - 150PSI 4 IN 1/4 IN NPT GAUGE B319220
WIKA 1913613 -100-100KPA -30-0IN-HG 0-15PSI 4 IN 1/2 IN PRESSURE GAUGE B415462
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ASHCROFT STAINLESS STEM 2IN TEMPERATURE 50-300F 5 IN 1/2 IN NPT GAUGE B214739
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TRERICE -5 TO 50C THERMOMETER TEMPERATURE 25-125F 5 IN GAUGE B278453
ASHCROFT DURALIFE GLYCERIN 0-800PSI 4 IN 1/4 IN NPT PRESSURE GAUGE B441334
ASHCROFT 0-60KPA PRESSURE 0-240IN-H2O 5 IN 1/2 IN GAUGE B299040
DWYER 2005C MAGNEHELIC PRESSURE 0-5IN-H2O 4 IN DIAL 1/8 IN NPT GAUGE B344944
TRERICE PRESSURE 0-300PSI 4 IN 1/2 IN NPT GAUGE B221467
WALLACE & TIERNAN 62A-2A-0030Y 0-420IN-H2O 9 IN PRESSURE GAUGE D434306
DWYER 2030 MAGNEHELIC 0-30IN-H2O 4 IN 1/8 IN NPT PRESSURE GAUGE B417689
ASHCROFT 595-06 ANSI B40.1 0-100PSI 2IN FACE 1/4IN NPT GAUGE D292177
NEW TRERICE 52-2404 PRESSURE 0-160PSI 6 IN 1/2 IN NPT GAUGE B365652
NEW TRERICE 52-2404 PRESSURE 0-160PSI 6 IN 1/2IN NPT GAUGE B270901
TRERICE INDUSTRIAL THERMOMETER TEMPERATURE 30-240F 1 IN NPT GAUGE B289370
WIKA 111.10 4 LM PRESSURE 0-160PSI 4IN DIAL 1/4 IN NPT LOWER MOUNT GAUGE B365388
NEW WIKA 213.40 LIQUID 30IN HG VAC NPT PRESSURE 4 IN 1/4 IN GAUGE B205896
NEW ANDERSON PRESSURE 0-160PSI 3-1/4 IN 2 IN NPT GAUGE B258444
DWYER N39K M PHOTOHELIC TRANSMITTER PRESSURE SWITCH 0-6IN-H2O 4 IN GAUGE B245969
NEW FOXBORO C1206 3-15PSI 0-100 3-1/2 IN 1/4 IN NPT PRESSURE GAUGE D482550
WINTERS LIQUID FILLED 0-60PSI 2-1/2 IN 1/4 IN NPT PRESSURE GAUGE B448793
USG SOLFRUNT 0-100PSI 5 IN DIAL FACE 1/4 IN NPT PRESSURE GAUGE B480902
NEW BUSCH 545.004.00 15PSI MAX 1/4IN NPT PRESSURE GAUGE D371339
WIKA 0-680KPA 0-100PSI 0-50PSI DIFFERENTIAL 4IN 1/4IN NPT PRESSURE GAUGE B406200
NEW VILTER 1204F -30-300PSI 4-1/2 IN 1/4 IN NPT PRESSURE GAUGE D417348
NEW ASHCROFT 45 1038 A 02B 0-160PSI 4-1/2 IN DIFFERENTIAL PRESSURE GAUGE D475496
MARSH 34693-1 0-60 3-1/4 IN 1/4 IN NPT GAUGE D464133
ASHCROFT Q-8451 PRESSURE 0-600PSI 4-1/2 IN 1/4 IN NPT GAUGE B342338
TRERICE 52-2863 STEM 3-3/8 IN TEMPERATURE -5 TO 50C 4 3/4 IN GAUGE B269533
ABB DAL-104-4 0-120C LIQUID TEMPERATURE GAUGE B469586
USG 1550 0-400KPA STAINLESS GLYCERIN 0-60PSI 4IN 1/4IN PRESSURE GAUGE B406451
NEW CHARTER POWER SYSTEMS PL-644 THERMOMETER 0-160F TEMPERATURE GAUGE D470010
MARSH B467-2 PRESSURE 0-30PSI 0-210KPA 4IN 1/4IN GAUGE 200404
NEW ASHCROFT 251490A02L100/0IWV LOW PRESSURE 100-0IN-H2O 1/4IN NPT GAUGE D326708
NEW WIKA 9768130 111.10 0-400PSI 4 IN 1/4 IN NPT PRESSURE GAUGE D433573
ASHCROFT LIQUID FILLED PRESSURE 0-85PSI 4 IN 1 IN GAUGE WITH DIAPHRAGM B258342
WEKSLER GR2-D123-3 0-100KPA 0-15PSI 5 IN 1/4 IN NPT GAUGE B284195
DWYER W40G BEBCO PRESSURE 0-0.50IN-H2O 4 IN 1/8 IN NPT GAUGE B299050
ASHCROFT 25-1009SWL-02B GLYCERIN FILL PRESSURE 0-100PSI 2-1/2IN GAUGE B340529
ASHCROFT 35-1009SWL-04L PRESSURE 0-100PSI 3-1/2IN GAUGE B339791
TRERICE PRESSURE 0-30PSI 4-1/2 IN 1/4 IN GAUGE B352383
DWYER W09H MB MAGNEHELIC 0-10CFM X1000 PRESSURE 4 IN 1/4 IN NPT GAUGE B232712
NEW RADNOR 64003451 BRASS 0-4000PSI PRESSURE GAUGE D442541
NEW MARSH X32550P BELLOFRAM PRESSURE 0/160PSI 3-1/4 IN 1/4 IN NPT GAUGE D307947
NEW MCDANIEL CONTROLS L5L 0-5PSI 4 IN 1/4 IN NPT PRESSURE GAUGE D460908
CONTINENTAL 05-020-070 CPI 0-160PSI 1-1/2 IN 1/8 IN NPT PRESSURE GAUGE D434765
NEW ASHCROFT 45-1377A-2B DURAGAUGE PRESSURE 0-300 4IN 1/4IN NPT GAUGE B356106
ASHCROFT 5IN STEM PROBE TEMPERATURE -20-120C 5 IN DIAL 1/2 IN NPT GAUGE B306557
ASHCROFT DURAGAUGE PLUS PRESSURE 0-600PSI 4-1/2 IN DIAL 1/4 IN NPT GAUGE B344214
ASHCROFT DURAGAUGE PRESSURE 0-100PSI 6-1/2 IN DIAL 1/4 IN NPT GAUGE B365440
NEW WILKERSON GRP-96-719 0-150 PSI PRESSURE GAUGE 3/4 IN FACE D212084
NEW DWYER 3215-TP PHOTOHELIC PRESSURE SWITCH 0-15LB/HR 4 IN GAUGE D267248
TRERICE 52-2863 17-1/2IN-PROBE TEMPERATURE -5-50C 5 IN GAUGE B288350
WIKA 0-*** RECEIVER GAUGE PRESSURE 0-15PSI 4 IN 1/4 IN NPT GAUGE B345592
TRERICE 52-2863 5 17-3/8IN-PROBE TEMPERATURE 25-125F 5 IN GAUGE B288421
TRERICE 52-2873 PRESSURE 0-100PSI 5 IN 1/4 IN NPT GAUGE B299082
ASHCROFT TEST 0-30PSI 4-1/2 IN 1/4 IN NPT PRESSURE GAUGE B387193
NEW DUAL -10-80C FAHRENHEIT THERMOMETER TEMPERATURE 20-180F GAUGE B309546
ANDERSON 9706179 LIQUID PRESSURE 0-100PSI 3-1/2 IN GAUGE B221326
HELICOID E1P3G***000000 PRESSURE 0-600PSI 3-1/2 IN DIAL 1/4 IN NPT GAUGE B344957
NEW ASHCROFT VE3ADBG 50-EI60R-090 9IN STEM 0-300C 5 IN 1/2 IN NPT GAUGE B448199
MARSH PAPER MACHINE PRESSURE 0-60PSI 3-1/2 IN DIAL FACE 1/4 IN NPT GAUGE B345009
NEW APV 37-00 PRESSURE 0-600PSI 4-1/2 IN 7/8 IN GAUGE B351332
NEW ASHCROFT 30 EI60R 060 50/400F BIMETAL THERMOMETER 50-400F GAUGE D475361
DWYER 4300 CAPSUHELIC 0-300IN-H2O 4IN FACE 1/4IN NPT PRESSURE GAUGE D377621
NEW ANDERSON EL074010171101A PRESSURE 0-160PSI 3-1/4IN FACE GAUGE D288140
NEW GITS BROS 18013 SIGHT 1/4 IN NPT GAUGE D399756
0-30PSI 4 RANGE PRESSURE 0-70FT-H2O 5 IN DIAL 1/4 IN NPT GAUGE B342701
ASHCROFT 250-2990 DURALIFE 0-30PSI 4 IN 1/4 IN NPT PRESSURE GAUGE B449184
NEW NOSHOK 25-900-30/15PSI/KPA 0-15PSI 1/4IN NPT PRESSURE GAUGE D383796
AMSCO STERIS INTERNAL SYPHON PRESSURE 0-100PSI 2-5/8 IN 1/8 IN NPT GAUGE B295150
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NEW WIKA LIQUID FILLED PRESSURE 0 TO -14PSI 4 IN 1/2 IN NPT GAUGE B340336
TRERICE -40 TO 70C TEMPERATURE -40 TO 160F 5 IN GAUGE 2IN PROBE B314091
NEW ASHCROFT 25W1001TH PRESSURE 0-200PSI 2-1/2 IN 1/4 IN NPT GAUGE D319035
NEW USG 1980 SOLFRUNT 0-200PSI 4-1/2 IN 1/2 IN NPT PRESSURE GAUGE D475608
NEW DWYER 2230-LT MAGNEHELIC PRESSURE 0-30PSI 5 IN 1/8 IN NPT GAUGE B286889
NEW ASHCROFT 50-EI60R-120 THERMOMETER -20 TO 120 TEMPERATURE 12IN STEM B201890
NEW ANDERSON EL069010054111A PRESSURE 0-60PSI GAUGE D351971
MARSH PRESSURE 0-300PSI 4-1/2 IN DIAL FACE 1/4 IN NPT GAUGE B327148
NEW ASHCROFT DURALIFE PRESSURE 0-100PSI 2-1/2 IN GAUGE B234300
NEW DWYER 3000-0 PHOTOHELIC PRESSURE SWITCH 0-0.50IN-H2O 4 IN GAUGE D323109
NEW USG G-2062 0-160PSI 2 IN 1/4 IN NPT PRESSURE GAUGE D459672
BOURDON STAINLESS PRESSURE 0-2000KPA 4 IN 1/2 IN NPT GAUGE B315691
NEW DWYER A3215 PHOTOHELIC PRESSURE SWITCH 0-15PSI 4IN 1/4IN NPT GAUGE D318779
NEW DWYER DSW-7233-153-4 PRESSURE SWITCH 1-35PSI 7 IN 1/4 IN NPT GAUGE B277372
HELICOID E3P3K3A000000 PRESSURE 0-1000PSI 3-1/2 IN DIAL 1/4 IN NPT GAUGE B344981
TRERICE 52-2863-1 TEMPERATURE -5 TO 50C 5IN 3/4 IN GAUGE B278381
MARSH A63-4 0-30PSI 5 IN 1/4 IN NPT PRESSURE GAUGE B397630
ASHCROFT DURAGAUGE 0-600KPA 4-1/2 IN 1/2 IN PRESSURE GAUGE B473849
DWYER 3004C 25PSIG PHOTOHELIC PRESSURE 4IN-H2O 4IN GAUGE 120V HH CIRCUIT B214738
DWYER 12-166979-02 MAGNEHELIC 0-25000CFM 4 IN 1/8 IN NPT PRESSURE GAUGE B470567
WINTERS PFQ SERIES LIQUID FILLED 0-15PS 1/4 IN NPT PRESSURE GAUGE B435518
TRERICE 5-1/2IN PROBE TEMPERATURE 25-125F 5 IN DIAL GAUGE B312541
HONEYWELL 14506495-101 RECEIVER DIAL 0-200F 3 IN TEMPERATURE GAUGE B370201
WIKA GLYCERIN DIAL FACE 0-100PSI 4 IN 1/4 IN NPT PRESSURE GAUGE B458663
ASHCROFT 25IN PROBE STEM TEMPERATURE -20-120C 5 IN 1/2 IN NPT GAUGE B321653
DWYER 12-164380-02 MAGNEHELIC 350MM-H2O 0-15IN-H2O 1/8 IN PRESSURE GAUGE B432814
ASHCROFT Q-8451 DURAGAUGE 0-25KPA 5 IN 1/2 IN NPT PRESSURE GAUGE B473842
NEW ASHCROFT 50 EI60 E 060 0/250F THERMOMETER 0-250F 5 IN 1/2 IN NPT D460683
NEW 0-400PSI 2-3/16 IN 1/4 IN NPT PRESSURE GAUGE D449094
NEW ASHCROFT 35 1009AW 02B XPRUC PRESSURE 0-30IN-HG 3-1/2 IN GAUGE B279168
NEW WEKSLER 3A0644FTX 50-550F 1/2 IN NPT 3 IN TEMPERATURE GAUGE D457662
NEW ASHCROFT DURAGAUGE PRESSURE 0-300KPA 6 IN 1/4 IN NPT GAUGE B303605
WEKSLER INSTRUMENTS ROYAL SERIES PRESSURE 0-160PSI 4-1/2 IN 1/4 IN GAUGE B205180
NEW ASHCROFT 45 1082SS 04L 30 IMV/15 TEST -30-15PSI PRESSURE GAUGE D475485
ASHCROFT DURAGAUGE PRESSURE 0-300PSI 5 IN 1/4 IN NPT GAUGE B299790
NEW NOSHOK 20-110-160 PRESSURE 0-160PSI 1-3/4 IN 1/8 IN NPT GAUGE D274668
TRERICE 52-2776.1 22 TEMPERATURE -40 TO 160F 5 IN 1/2 IN NPT GAUGE B312535
JOHNSON CONTROLS P70DA-1C HIGH LOCKOUT PRESSURE SWITCH 500PSIG 1/4IN NPT B242483
ASHCROFT PRESSURE 0-160PSI 4-1/2 IN 1/4 IN NPT GAUGE B265854
MILJOCO 0-115C 4 IN 1/4 IN NPT TEMPERATURE GAUGE B441167
DURO INSTRUMENTS THERMOMETER 30-240F BRASS TEMPERATURE 6 IN PROBE B209068
ASHCROFT 50/450CD 14IN PROBE TEMPERATURE 50-450C 5 IN 1/2 IN NPT GAUGE B303865
STAINLESS PROCESS 74-00 0-160PSI 3-1/2 IN PRESSURE GAUGE B449133
ANDERSON 9309065 0-300PSI 4-1/2 IN 2 IN TRI-CLAMP PRESSURE GAUGE D448200
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