6ES7951-1AH00-0AA0 亿佳没泪水

从技术原理角度来讲，触摸屏是一套透明的坐标定位系统，首先它保证是透明的，因此它通过材料科技来解决透明问题，像数字化仪、写字板、电梯开关，它们都不是触摸屏；其次它是坐标，手指摸哪就是哪，不需要第二个动作，不像鼠标，是相对定位的一套系统，我们可以注意到，触摸屏软件都不需要光标，有光标反倒影响用户的注意力，因为光标是给相对定位的设备用的，相对定位的设备要移动到一个地方首先要知道身在何处，往哪个方向去，每时每刻还需要不停的给用户反馈当前的位置才不至于出现偏差。这些对采取坐标定位的触摸屏来说都不需要；再其次就是能检测手指的触摸动作并且判断手指位置。 

透明特性

透明，它直接影响到触摸屏的视觉效果。透明有透明的程度问题，红外线技术触摸屏和表面声波触摸屏只隔了一层纯玻璃，透明可算佼佼者，其它触摸屏这点就要好好推敲一番，“透明”，在触摸屏行业里，只是个非常泛泛的概念，很多触摸屏是多层的复合薄膜，仅用透明一点来概括它的视觉效果是不够的，它应该至少包括四个特性：透明度、色彩失真度、反光性和清晰度，还能再分，比如反光程度包括镜面反光程度和衍射反光程度，只不过触摸屏表面衍射反光还没到达CD 盘的程度，对用户而言，这四个度量已经基本够了。 

由于透光性与波长曲线图的存在，通过触摸屏看到的图象不可避免的与原图象产生了色彩失真，静态的图象感觉还只是色彩的失真，动态的多媒体图象感觉就不是很舒服了，色彩失真度也就是图的大色彩失真度自然是越小越好。平常所说的透明度也只能是图的平均透明度，当然是越高越好。 

反光特性

反光性，主要是指由于镜面反射造成图像重叠身后的光影，如人影、窗户、灯光等。反光是触摸屏带来的负面效果，越小越好，它影响用户的浏览速度，严重时甚至无法辨认图像字符，反光性强的触摸屏使用环境受到限制，现场的灯光布置也被迫需要调整。大多数存在反光问题的触摸屏都提供另外一种经过表面处理的型号：磨砂面触摸屏，也叫防眩型，价格略高一些，防眩型反光性明显下降，适用于采光非常充足的大厅或展览场所，不过，防眩型的透光性和清晰度也随之有较大幅度的下降。清晰度，有些触摸屏加装之后，字迹模糊，图像细节模糊，整个屏幕显得模模糊糊，看不太清楚，这就是清晰度太差。清晰度的问题主要是多层薄膜结构的触摸屏，由于薄膜层之间光反复与反射折射而造成的，此外防眩型触摸屏由于表面磨砂也造成清晰度下降。清晰度不好，眼睛容易疲劳，对眼睛也有伤害，选购触摸屏时要注意判别。

SQUARE DUE SERVO MOTOR SER39B4L3SSOAO1  

Square Due Series 500 Controller 530T-1112

Square Due LK3 TU 3 General Purpose Switch 800 Amp 600 VAC 3 Phase

Square Due Contactor LC1F500 3 Pole 500AMP

Square Due Contactor (LC1F500 3 Pole 500AMP)

Square Due C1600 CCX17 Data Entry Panel TCCX1720F Welding Display

SQUARE DUE ATV66C23N4 300HP VARIABLE FREQUENCY AC DRIVE 460V VOLT

SQUARE DUE ATV58HD64N4XZ 460V 3PH 60HP AC DRIVE

Square Due 230V ATV66D23M2 25 HP VT 20 HP CT VS Variable Speed Drive

SQUARE DUE ATV58HD16N4XZ SPEED DRIVE 400-460VAC 15HP ATV58 +OPTIONS

SQUARE D T15T68F   T15T68F

SQUARE D SYMAX SY/MAX DUAL ConVERTER 8030 CRM-601 8030CRM-CRM601 B1

Square D Symax RIM-126 Thermocouple Input Module

Square D Symax processor 401 rack rrk-100 and power supply ps-25

Square D SYMAX Model 300 Processor 8020 SCP-312  

SQUARE D SYMAX INTERFACE CARD CLASS 8010 SFI510 SFI 510 SER A1 REV 2.01  

SQUARE D SYMAX 8881 SA-1 *NIB* 120VAC SIGNAL ConVERTER CARD SER B (16C0)

SQUARE D SY/NET NETWORK INTERFACE MODULE MODEL CRM-565

SQUARE D SY/MAX SCP654 MODEL 650 PROCESSOR REV.4.10 SERIES C WITH ETHERNET  

Square D Sy/Max Processor Module, 8020 SCP-523, Series 1,  , WARRANTY

SQUARE D SY/MAX PROCESSOR MODULE PLC SCP444 8020SCP444 SCP-444 SER E

Square D SY/MAX PLC 8010-SFI-510X INTERFACE BOARD

Square D SY/MAX Model CP 50 Programmable Controller with RT-108 & EPU-1, AN-108

SQUARE D SY/MAX MODEL 700 MEMORY MODULE 8020 SMM-720 SER. I2 REV. 6.00 12 VDC

SQUARE D SY/MAX MODEL 700 MEMORY MODULE 8020 SMM-720 SER. H 12 VDC

Square D SY/MAX Model 600 Demo Device Processor Module with Key

SQUARE D SY/MAX CLASS 8030 RIM123 X RIM123X SERIES A2 1.01 INPUT MODULE

SQUARE D SY/MAX CLASS 8030 RIM123 SERIES A2 1.01 INPUT MODULE

SQUARE D SY/MAX CLASS 8030 RIM123 R RIM123R SERIES A2 1.01 INPUT MODULE

SQUARE D SY/MAX CLASS 8005 CP-50, AN-108, (2) RT-108, DN-116, TT-116, LNV-101

SQUARE D SY/MAX 8055 SCP654 Model 650 PROCESSOR 16K MEMORY C 4.10

SQUARE D SY/MAX 8030CRM565 REV C , SYNET POWER , (P1)

SQUARE D SY/MAX 8030CRM565 REV A2 , SYNET POWER , (P1)

SQUARE D SY/MAX 8030CRM510 REV H2 , NETWORK INTERFACE , (P1)

SQUARE D SY/MAX 8030CRM510 REV H1 , NETWORK INTERFACE , (P1)

SQUARE D SY/MAX 8030-CRM275 *FACTORY SEALED*

SQUARE D SY/MAX 8030-CRM210 * *

SQUARE D SY/MAX 8030 CRM-560 CRM 560 CRM560 SER. D2 8030-CRM-560  

SQUARE D SY/MAX 8020-SCP-523X PROCESSOR SERIES M1 REV 9.00 8020SCP523X

SQUARE D SY/MAX 8020-SCP-424 MODEL 400 PROCESSOR 8020SCP424

SQUARE D SY/MAX SCP-423 SCP423 SERIES C5 REV 3.40 5VDC PROCESSOR  

Square D Switch Fusible HD 600 amp # H366

Square D Surgelogic TVS8IMA12P MA8IMA12 TVS3DSPH

Square D Surgelogic TVS2XGA16AI Surge Protector Modular 208 4 Wire (NOS) (NIB)

Square D SurgeLogic TVS2WA12X Transient Voltage Surge Suppressor 120 kA 208Y/120

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Square D Surgelogic Surge Protective Device TVS2HWA10X - 208Y/120V - 3 Phase

Square D Surgelogic FC4IMA16C Surge Protective Device

Square D Surgelogic FC4IMA16C I-Line Surge Protective Device 160ka

Square D SurgeLogic FC1IMA12 With Square D FC 60 Amp I Line Circuit Breaker

SQUARE D SURELOGIC SURGE PROTECTIVE DEVICE CAT#FC4IMA16 480V 160kA 3PH W/BREAKER

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Square D STARTER Size 6 8536SHO254

Square D Stainless Steel 8538SDW36V81CFF4P21T11X22 AC Combination Starter -  

Square D Stainless Steel 8538SCW34V81CFF4P21T11X22 AC Combination Motor Starter

Square D Stainless H364NDS 200a 600v F    Safety Switch H364DS

Square D SQD SurgeLogic DHL2IMA16 with HLA36060 Breaker 208Y/120V MA1IMA16

Square D S MA11352 / MAA 500V Circuit Breaker

Square D Sorgel Transformer 480v 30 Kva   W/ Box 30t1755hfisnl42db

Square D Sorgel Single Phase 100S3H 100 KVA Transformer Prim 240/480 Sec 120/240

Square D Sorgel EE45T211H 3Ph 45kVA General Purpose Transformer 208v-120v NICE

Square D Sorgel 75KVA Transformer Cat #EE75T1749H

Square D Sorgel 3 Phase Insulated Transformer 112T3HFISNLP 112.5 KVA Sheilded!

Square D Sorgel 3 Phase General Purpose Transformer EE300T3HCU 90

SQUARE D SORGEL 3 PHASE GENERAL PURPOSE TRANSFORMER 30 KVA 30T76HF42DB * *

Square D Sorgel 225T99H 225KVA 480V 480/271V 60Hz 3PH Isolation Transformer

Square D Sorgel 225 Kva Transformer Primary 480 Sec 480Y/277 3 Phase 225T76H Iso

Square D Sorgel 167 KVA Transformer 1 Ph 167S61 H Prim 277 Sec 120/240

Square D Sorgel 150 Kva Transformer 3 Ph Pri 480 Sec 400Y/231 150T2464H 400Y 231

Square D Sorgel 112.5 Kva Transformer Primary 480 Sec 480Y/277 Volt 112T76H

Square D Solid State Trip Circuit Breaker Cat. No. MX36800G Rating 800 Amp 600V

Square D Solid State 25 HP Reduced Voltage Starter

SQUARE D SKAL3150   SKAL3150

SQUARE D SK4515 CIRCUIT BREAKER MOUNTING KIT *SEALED*

SQUARE D SIZE SZ 5 motor STARTER COMBO combination 400A 8538 SGG33 B 8536

Square D Size 6 8536SHO2 Motor Starter 8536 SHO2 SqD Sz 6 120V

Square D Size 5 Starter with Motor Logic Plus Overload

SQUARE D SIZE 5 SGO1V02 AC MAGNETIC STARTER, 8536, OPEN TYPE S,   IN BOX

Square D Size 5 Contactor Cat# 8502SG025 Nema 1

Square D Size 5 Combination Starter Box 400 Amp Stainless Steel SS 3R 8536 F 

Square D Size 5 Combination Starter Box 400 Amp Stainless Steel SS 3R 8536 Fuse

Square D Size 5 Combination Starter Box 400 Amp 12/3R 8538 F 

Square D Size 5 Combination Starter 400 Amp F  460v coil

Square D size 4 Reversing magnetic Starter

SQUARE D SIZE 4 COMBINATION STARTER CIRCUIT BREAKER TYPE

SQUARE D SIZE 4 200 AMP 600 VOLT 480 VOLT COIL COMBINATION STARTER

Square D Size 3 Reversing Combination, 120V 3Ph, Non-Fusible Disconnect, IN BOX!

Square D Size 3 Fusible Combo Starter 70-100 amp 480 vac 110/120v Coil

Square D Size 3 Disconnect: Inv 16666

Square D Size 3 8702 SEO 2 51 Reversing Motor Contactor Sz 3 120 V 3

Square D Size 1, Two Speed Enclosed Combination Starter Class 8810 NIB!!!

SQUARE D SIZE 1 MOTOR STARTER 30 AMP BREAKER MCC MCCB BUCKET

Square D Single Phase StepUp Transformer 25KVA - 208vac-240vac - EE25S60H

SQUARE D S-FLEX FAN AND PUMP ConTROLLER SFD212CG4Y W/ATV212H075N4 DRIVE

Square D S-Flex AC Drive SFD212HG2YB06B07 10HP 208V AHIVAR 212

Square D SFD21CG3Y S-Flex Enclosed Variable Freq. AC Drive Controller 1 HP, 230V

Square D Series 4 Automatic Molded Case Switch 400A 380/415VAC 3 Pole SLAL3000M

Square D SEPAM Series 40 Protective Digital Relay SQ1S42A

Square D SEFG20 2000 Amp 600 Volt 3 Phase Circuit Breaker bolt on

Square D SEFG08 800 Amp 600 Volt 3 Phase Circuit Breaker bolt on

Square D SE frame Programmer 3000A LSIG with S9-303000RP

Square D SD75430 Bus Plug - Reconditioned

Square D SD-3603 Series 3 Round Bar Bus Plug,  

SQUARE D SD SD9345BB 400 AMP 600V FUSIBLE F  BUS PLUG sd9345

SQUARE D SD SDAMP 600V CIRCUIT BREAKER BUS PLUG SER 3

SQUARE D SD SD67728 SD-AMP 600V BREAKER BUSS BUS PLUG BROKEN STAB

SQUARE D SD SD3855 SD-AMP 600V BREAKER BUS PLUG TAP BOX BUSWAY 225 400

Square D Schneider PowerPact LD400 LDP36400U33X 400 AMP 600V Circuit Breaker

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Square D Schneider Electric LG600 600amp 3 pole breaker

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Square D SB 124IR METERED SWITCHGEAR 120/240 NEMA 3R 400 AMP SERIES E2

SQUARE D SAFLEX BUSWAY CIRCUIT BREAKER SD-75715   SD75715

Square D Safety Switch, Fusible, 3PST, 400A, 600V Model: H365N

Square D Safety Switch HU361DFEI, 30A 600V 3P NEMA 4X,  !!!

SQUARE D SAFETY SWITCH #H362DS SERIES E STAINLESS STEEL

Square D Safety Disconnect W/Size 2 Starter SDG 43 Class 8539 50A 660V (NIB)

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Square D S48526 or S48211, 100-130 VAC Spring Charging Motor for NW Masterpact

SQUARE D S33931   S33931

SQUARE D S33930   S33930

Square D S164A Micrologic 6.0P Trip Unit,  !

SQUARE D S163A   S163A

SQUARE D S143A   S143A

SQUARE D S143A MICROLOGIC 5.0 A TRIP UNIT 600/690V 50/60 HZ  

Square D S143A Micrologic 33072 5.0A

Square D RLF36160U63AABBC Breaker, 1600 A, 100 kAIR, Aux Contacts,  

Square D RKF36200CU43AE1 Breaker, 2000 A, 65 kAIR, Modbus,  

Square D RKF3612CU44A PowerPact RKAmp 3 Pole Circuit Breaker LSIG

Square D RFK36200U33A 2000 FIX MO LSI TRIP

Square D RFK36120U33A 1200 FIX MO LSI TRIP

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Square D Reversing Motor Starter Assembly w/ Class 8502 SFO-1 & SFO-2 Excellent

Square D Reversing Contactor 8702SD02V03 8701 SD02V03

SQUARE D REHU494IP Disconnect Switch

SQUARE D REHU493IP Disconnect Switch

Square D Reduced Voltage Combo Starter Size 5 Motor Controller 150 HP 8536 SGO1

SQUARE D RED. VOLTAGE SOLID STATE STARTER 350HP 8638 LSA4S (WASH)

Square D Reconditioned Saflex Panel Board Switch 600A 600V Fusible Nema1

Square D Reconditioned Saflex Panel Board Switch 400a 600V Nema1 Fusible

Square D Reconditioned NA36900 I-Line 900A 600V 3 Pole Thermal Magnetic LI Trip

Square D Reconditioned NA361200 I-Line 1200A 600V 3 Pole Thermal Magnetic

Square D Reconditioned MHL3645025DC1679 Feed Through 450A 600V 3 Pole AUX Switch

Square D Reconditioned ME436LSIG 400A 600V 3 Pole I-Line LSIG Trip Micrologic

Square D Reconditioned LX36400G I-Line 400A 600V 3 Pole LSIG Trip Functions

Square D Reconditioned LE36300LSG 300A 600V 3 Pole I-Line Solid State Micrologic

Square D ReactiVar, type-AV5000, cat#AV035045CV5F6N, KVAR 3503ph, 480V

SQUARE D REACTIVAR POWER FACTOR CAPACITOR PFCD4100 100KVAR 120 IN A 480V VOLT

SQUARE D RC12V120   RC12V120

SQUARE D 25amps 3 Poles CIRCUIT BREAKER - 16 pcs   IN BOX

SQUARE D Load Center

SQUARE D Load Center

SQUARE D Load Center

SQUARE D Load Center

SQUARE D QMJ365 SAFETY SWITCH *  OUT OF BOX*

Square D QMJ365 Branch Switch, 400 A, Fusible, QMJ,  !

Square D QMJ365

Square D Fusible Disconnect Switch 200A 600V 3Ph 3P Ser. E1

SQUARE D QMJ QMJ366 600 AMP 600V F  FUSIBLE PANEL PANELBOARD SWITCH SER E1

SQUARE D QMJ QMJ365 400 AMP 600V F  FUSIBLE PANELBOARD SWITCH SER E1

SQUARE D QMB368 SER. E1 1200 AMP 600 VOLT PANELBOARD SWITCH

SQUARE D FUSIBLE DISConNECT SWITCH 800A 600V

Square D    Fusible Main Panel Switch 800A, 600Volt 3-Phase W/Fuses

SQUARE D    

Square D Fusible Panelboard Switch, 600 Amp, 3 pole, 600Vac -  

Square D Fusible Panelboard Switch 600V 600A Ser E2

SQUARE D 600 AMP 600V MC Bucket FUSIBLE SWITCH SER E2 W/Fuses

Square D Fusible 400A 600V Disconnect Switch Series E1 Recondi