GE IC200DEM103

咨詢熱線--17750626260

dcs是在運(yùn)算放大器的基礎(chǔ)上得以發(fā)展的。把所有的函數(shù)和過程變量之間的關(guān)系都做成功能塊（有的dcs系統(tǒng)稱為膨化塊）。dcs和plc的表現(xiàn)的主要差別是在開關(guān)量的邏輯解算和模擬量的運(yùn)算上，即使后來(lái)兩者相互有些滲透，但是還是有區(qū)別。80年代以后，plc除邏輯運(yùn)算外，控制回路用的算法功能已經(jīng)大大加強(qiáng)，但 plc用梯形圖編程，模擬量的運(yùn)算在編程時(shí)不太直觀，編程比較麻煩。但在解算邏輯方面，表現(xiàn)出快速的優(yōu)點(diǎn)，在微秒量級(jí)，解算1k邏輯程序不到1毫秒。它把所有的輸入都當(dāng)成開關(guān)量來(lái)處理，16位（也有32位的）為一個(gè)模擬量。而dcs把所有輸入都當(dāng)成模擬量，1位就是開關(guān)量。解算一個(gè)邏輯是在幾百微秒至幾毫秒量級(jí)。對(duì)于plc解算一個(gè)pid運(yùn)算在幾十毫秒，這與dcs的運(yùn)算時(shí)間不相上下?！?/span>

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廈門莫格電氣自動(dòng)化有限公司     
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MARTIN SPROCKET S1216 1 3-3/8" SQ. SEALED
 
STANLEY AIR TOOLS 3/8" DRIVE RIGHT-ANGLE PNEUMATIC NUTRUNNER A30LRATA-12
 
GOODYEAR 4IN. OD 2IN. ID FALCON PD SPROCKET TL GTR-36G-8M-21 *NEW*
 
1/4" R SQUARE THREAD DIE
 
UNKNOWN MFG 6X2-1/2" CASTER
 
PUTNAM A-9 3/16" 1/2" 4-FLUTE DOUBLE ENDED END MILL 94857 DE
 
SEAL GASKET 1-1/2"-3/4/600 ASME B16.20
 
2-FLUTE 1-7/64 HS TWIST DRILL SHANK
 
UTD 2-FLUTE 1-13/64 12-1/2" HS TWIST DRILL SHANK G8
 
TA CHEN 3" PIPE SLEEVE SA/A403 SCH10S / WP316/316LW
 
RADIAC FLARING CUP WHEEL D11V9 3-3/4 X 1-1/2 X 1-1/4 NIB
 
CLECO 5G4-124?? 3/8'' SQUARE DRIVE PNEUMATIC ANGLE NUTRUNNER
 
LENOX PORTABLE BAND SAW BLADES 3' 8-7/8"X 1/2" 80116 NIB
 
KENNAMETAL ERICKSON 5/16" COLLET 3680CF8 *NEW*
 
3M LABEL GUARD 821 LOT OF 5
 
BLUE-POINT 2-3/4" SILICON CARBIDE GRINDING STONE NIB VSS88F
 
1/2"-13 4 FLUTE HAND TAP BAG OF 4 T-104
 
NORTON 6" GRINDING WHEEL D027440 8/96
 
STANDARD TOOL CO. SIDE MILLING TOOL 4X5/8X1 M
 
REXROTH 5-1/4IN. 3-1/4IN. OAL LINEAR MOTION SET 1085-625-20 *NEW IN BOX*
 
TAYLOR FORGE 2-1/2" SCH.5 PIPE SLEEVE WP-316--W V-2445
 
2-1/2" TYPE-C PIPE SLEEVE TR72-PSP / SCH5-316L
 
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OTD GREENFIELD 3/4 THREADING DIE 14NPT
 
GEMINI/NORTON 6 x 3/4 x 1 BENCH & PEDESTAL WHEEL 66252837103 *NEW*
 
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AMERICAN GREENFIELD HAND TAP 1 11/16-4 LH
 
SPEEDLINE 2-1/2" PIPE SLEEVE WP316LW DGRI
 
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BROWNING V-BELT SHEAVE 1VM50-7/8
 
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UB HS1-5/32" DRILL BIT
 
BROWNING 2-GROOVE SHEAVE PULLEY NIB 2BK30X3/4 / M2H6
 
INGERSOL RAND 1/4 INCH RIGHT ANGLE DRIVE PNEUMATIC NUTRUNNER QA1L08S6LD *NEW*
 
MSA MINI H2S HYDROGEN SULFIDE INDICATOR 470600
 
ATLAS COPCO RIGHT ANGLE ELECTRONIC NUTRUNNER ETV S7-50-HAD-SH *NEW*
 
1/4"L 92 DIE
 
STANDARD 1/2" STAINLESS STEAL LOCKNUT NIB NS10
 
NIAGRA L/4 SIDE MILLING TOOL HSS 5X1/8X1
 
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CLEVELAND SIZE:1/8 TAPER SHANK DRILL BIT EDP-12040 128055 *NEW*
 
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UNITED ABRASIVES INC. 3X1/8X3/8 METAL HIGHSPEED CUT-OFF WHEEL A24R / 23060 NIB


REXROTH 5-1/4IN. 3-1/4IN. OAL LINEAR MOTION SET 1083-625-20 *NEW IN BOX*
 
LOVEJOY 60 DLT HUB 1-3/4" 3/8X3/16KW COUPLING NIB 685144
 
CLE-FORGE 2-FLUTE 1-1/8 12-1/2" HS TWIST DRILL SHANK 6607
 
LENOX DIEMASTER 2 SAW BLADES 51 05353 NNB LOT OF 3
 
HSS TOOL SAW DISC CUTTER 4X1/8X1 NNB
 
11/64" x 3-1/4" TWIST DRILL BIT *NEW* LOT OF 14
 
BRADY 4" X 90' BLACK ON YELLOW LABEL & SIGN MAKER 8237-00