品牌:ABB | 规格:07DC91 GJR5251400R0202 | 材质:07DC91 GJR5251400R0202 |
产地:瑞典 |
07DC91 GJR5251400R0202现货
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2控制系统之间实现时钟同步方案
仪表专业技术人员的多次协商,提出的同步方案就是以每套装置的DCS控制器时间作为时钟源,每天当DCS控制器时间到达一个固定的时间点时,DCS控制系统发出一个脉冲信号,通过硬接线连接发送给装置内的其他控制系统,其他控制系统在接收到脉冲信号后,把系统时间修改为该时间点,完成整个装置时钟同步。该技术攻关解决了多个控制系统之间综合故障诊断的瓶颈问题。
3时钟同步具体实施方案
PX装置是某化工厂的关键生产装置。它的处理能力是60wt/y。它的主要产品是对二甲苯,副产品包括邻二甲苯、间二甲苯等化工产品。主体装置采用的是集散控制系统。紧急停车系统采用的是SIS(safetyinstrumented system)仪表系统。机组控制采用的是独立的控制系统。
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ELECTRIC MACHINERY 365C716G01 SYNC-RITE ROTATING APPLICATION SYSTEM D543527
SKF LAGD 60/WA2 AUTOMATIC LUBRICATOR D531035
DOW CHEMICAL 1-1/2IN 125 FLANGED PLASTIC LINED IRON PIPE TEE FITTING D564484
DOW 1-1/2IN 150 FLANGED POLYPROPYLENE LINED STEEL PIPE ELBOW 90DEG D564488
LAWTON SIZE D 0.005 6X5IN STAINLESS PRECUT SHIM D558010
DDP SP001006-W LED LAMP ASSEMBLY D557916
CONDUCTIX XA-51322 1000A CONDUCTOR BAR SPLICE COVER UV D548668
DOSSERT DPL21-62 4/0 STR CU LONG BARREL COMPRESSION TERMINAL D524575
SIGNAL SEALS & FASTENERS SL59009 SEAL D522521
BOX OF 20 LAWTON SIZE A 0.050 2X2IN STAINLESS PRECUT SHIMS D558045
SWAGELOK SS-8TF-TW-440 TEE-TYPE FILTER 1/2IN 440 MICRON STAINLESS D558891
CYKLOP AVT-18 TENSIONER TOOL D544408
FEDDERS CNX100T3B COOLING THERMOSTAT D544384
FES 520-000180-000 FILTER COVER O RING 7-1/4 IN ID 3/16 IN D544367
TOUGH GUY 1ECL5 MOP AND BROOM HOLDER D544321
NUCLEAR POWER OUTFITTERS NUCLEAR PLASTIC SHIELDING DEVICE D524653
STAPLES SEB4600CR SUSTAINABLE EARTH CYAN TONER CARTRIDGE D524868
FISHER 1R2112 BLACK ENAMEL FINISH REPLACEMENT D558563
SPEARS 857-015 PVC UNION SOCKET FKM 1-1/2IN D546835
LEXMARK C5340YX GENUINE YELLOW EXTRA HIGH YIELD TONER CARTRIDGE D525066
FALK 1107JSC J SERIES DRIVE SEAL HOUSING D552807
PFANNENBERG PFA 20000 EXHAUST FAN FILTER D567045
GRAPHIC CONTROLS 10760685 82-35-1013-03 BLUE RECORDER MARKER D568584
FOSTER SV4304 STEEL SAFETY COUPLER SOCKET FITTING 3/8 IN NPT D577212
RAYCHEM JBM-100-A MULTIPLE-ENTRY POWER/SPLICE/TEE W/JUNCTION BOX D577012
ABB S201-K4A MOLDED CASE CIRCUIT BREAKER 4A 1P 230/400V-AC D577323
BRYANT 277V-AC 15A AMP DUPLEX RECEPTACLE D576491
STAINLESS SPROCKETS SHAFT 102-10237-A 25MM WIDE 38MM LENGTH D573228
PIP 90-910GA 10OZ COTTON CANVAS SINGLE PALM GLOVES D573468
DAYCO SERIES 7094 HOSE 2FT 3/4 IN ID 300PSI MAX WP D578589
HAYWARD YSX1010022 1 IN THERMOPLASTIC SCREEN 1/32IN PERF D578885