1747-SCNR

1747-SCNR产品特点

管网的水阻特性
          当管网的水阻R保持不变时，水量与过水阻力之间的关系是不确定的，    

即水量Q与过水阻力h按阻力定律变化，其表达式为:

 式中，H—过水阻力  R—水阻系数。      

  H=f(Q)关系曲线为水阻特性曲线，呈抛物线形状，如图4所示。由图4可知，水阻系数R越大，曲线越陡，即过水阻力越大。
c 泵类调速控制节能原理
        由流体力学可知，水量Q与转速的一次方成正比，压力H与转速的平方

         成正比，功率P与转速的立方成正比。

式中: Qe—风机、泵类的额定风           (流)量;

                He—风机、泵类的额定压力;
                Pe—风机、泵类的额定功率;
                ne—风机、泵类的额定转速。

1747-SCNR

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1747-SCNR

参数规格

CONTROLOTRON 1010 UNIFLOW CLAMP-ON FLOWMETER

GS HEAVY DUTY 75 KVA DRY TYPE TRANSFORMER 480? 208Y120 

FISHER VALVE SIZE 1 TYPE EZ WITH CONTROLLER 3582I

ORMEC AC SERVOMOTOR SERVO MAC-A1100F/K1A 

MONARCH INSTRUMENT PAPERLESS RECORDER DC2000

NEW WOODWARD SYNCHRONIZER MODEL SPM-A 115 / 230 VOLT 

NEW GE MULTILIN VOLTAGE MANAGEMENT RELAY 2 PACK MIVII

NEW WESTINGHOUSE TRANSFORMER DIFF. RELAY 290B346A10B

CUTLER HAMMER 3000 AMP CIRCUIT BREAKER TRIP UNIT RMS/R 

CUTLER HAMMER 112.5 KVA TRANSFORMER 480 D HI 208Y 120LO

METTLER DIGITAL LAB BALANCE SCALE AT250

FANUC VELOCITY CONTROL UNIT A06B-6050-H102

ROSEMOUNT VORTEX FLOWMETER 2 INCH 8800-CF020SA1N1D1E5M5

ROSEMOUNT DIGITAL TRANSMITTER FLOWTUBE 8732C-T12E5M4

ROSEMOUNT TRANSMITTER AND FLOWTUBE 8732C-T12E5M4 

ADEPT ROBOT CONTROL SYSTEM MV-5 AWCII FDD VJI

NEW SICK MODULAR MEASUREMENT LIGHT GRID MLGS3 MLGE3

NEW MAC HYDRAULIC OIL CHILLER MAC-75CPF-L00-02BR-T5-1F

QUADTECH 1710 LCR DIGIBRIDGE IMPEDANCE MEASURING DEVICE

CUTLER HAMMER OUTDOOR LOAD CENTER 600 AMP 480 277 VAC 

JETT.CE HANDHELD COMPUTER JETTBTFTTP45EKR2-SP-128CFCARD

GE THPC3416 HIGH PRESSURE CONTACT SWITCH 1600 AMP 

NEW TANTEC DC-25 ELECTROSTATIC CHARGING GENERATOR 30kv

1747-SCNR