7.DCS和电气之间的电流信号。因为电气送过来的一般是有源的,*经过一个隔离器隔离一下,一方面不至于把仪表I/O卡串进电气回路,一方面是如果不用隔离器,可能双方调试不通。
49.纠正一个设计中易犯的错误,有人不管系统是那种防暴系统,统一都加安全栅。事实上,安全栅是用于本安防爆系统的。
INGERSOLL-RAND IRAX BSD 40 30-40 kg BALANCER
AUTOMATION TSX SUP1101 POWER SUPPLY

CLINCH NUT PULL TEST KIT, RETENTION TESTER 0-2000 LBS
ONEAC SINERGY II S700XAU CHLORIDE UPS
CONTROL TECHNIQUES V75 ICD VECTOR DRIVE
SQUARE D 8538-SCA24S8 COMBINATION STARTER, SERIES C SIZ
FAFNIR 2MM9110WI DUM SUPER PRECISION BEARING SET, NIB
THE S-P MANUFACTURING CORP. 8-RM-9920 PUMP
SEW EURODRIVE R60DT100LS4BM64?HR HELICAL GEARMOTOR, RATI
SEW EURODRIVE KA37A HELICAL GEAR, RATIO 125.91:1
KOHLER 5016-ET-0 DEXTER URINAL, NIB
PARKER 06.00CDD2AUS13 12.000 SERIES 2A HEAVY DUTY PNEUM
OPW SURE SEAL 800 SERIES BUTTERFLY VALVE 10",
CRANE CENTERLINE RESILLIENT SEATED BUTTERFLY VALVE, 6",
WESTINGHOUSEAC AC INDUCTION MOTOR, 5 Hp, Frame: 254, RE