EH50H电磁流量计要点.docx

Technical InformationTI 048D/06/en50096457ElectromagneticFlow MeasuringSystem PROline promag 50/53 HFlow measurement in hygiene, food and beverage or process applicationsFeatures and benefits?Nominal diameters DN 2…100?PFA lining for cleaning temperatures up to +150 C (+180 C inprep.?Guaranteed product quality, suitable for CIP/SIP cleaning and piggable?Stainless steel housing for high sani-tary safety?3A authorization and EHEDGtested?Robust field housing, IP 67?IP 67 wal-mount housing for straight-forward installation of the remote version?High accuracy:-Promag 50: 0.5% (option: 0.2% -Promag 53: 0t2%?Promag 53 with Touch Control:Operation without opening the housing?Additional software packs:for batching applications for advanced diagnosis andenhanced operational dependability?Quick Setup menus for straightforwardcommissioning in the field?Interfaces for integration into all major processcontrol systems:-HART interface as standardPromag 50: PROFIBUS-PA-Promag 53: PROFIBUS-PA/-DP, FOUNDATION FieldbusApplication>5 ii S/cm can be measured:All fluids with a minimum conductivity of?beverages, e.g. fruit juice, beer, wine?milk products, fruit mixtures?salt solutions?acids and causic solutions, etc.A minimum conductivity of> 20 仙 S/cm is required for measuring demineralizedwater.Home Contents Print ExitPROline Promag 50/53 H2Endress+HauserFunction and system designMeasuring principleFaraday ' s law of induction states that a voltage is induced in a conductor moving a magnetic field.In electromagnetic measuring, the flowing medium corresponds to the moving conductor. The induced voltage is proportional to the flow velocity and is detected by two measuring electrodes and transmitted to the amplifier. Flow volume is computed on the basis of the pipe's diameter. The constant magnetic field is generated by a switched direct current of alternating polarity.Ue = B L vQ = A v •Ue = induced voltageB = magnetic induction (magnetic fieldL = electrode gapv = flow velocityQ = volume flowA = pipe cross-sectionI = current strengthMeasuring systemThe measuring system consists of a transmitter and a sensor. Two versions are available:?Compact version: transmitter and sensor form a single mechanical unit.?Remote version: transmitter and sensor are installed separately.Transmitter:?Promag 50 (user interface with push buttons for operation, tw-oine display?Promag53 ( "Touch Control “ without opening the housingneoursplay.Sensor:?Promag H (DN 2 …100PROline Promag 50/53 HEndress+Hauser3InputMeasured variableFlow rate (proportional to induced voltageMeasuring rangeTypically v = 0.01…10 m/s with the specified measuring accuracyOperable flow rangeOver 1000 : 1Input signalStatus input (auxiliary input:U = 3 - 3OV DC, Ri = 5 k?, galvanically isolated.Configurable for: totalizers reset, measured-value suppression, error message reset, start/pause batching.OutputOutput signalPromag 50Current output:active/passive selectable, galvanically isolated, time constant selectable (0.01…100 s, full scale value selectable, temperature coefficient: typ. 0.005% o.r./C; resolution: 0.5 0N A ?active: 0/4 …20 mA, RL < 700 ? (HART: RL > 250 ? ?passive: 4 …20 mA, max. 30V DC, Ri < 150 ?Pulse/frequency output:passive, open collector, 30 V DC, 250 mA, galvanically isolated.?Frequency output: full scale frequency 2...1000 Hz (fmax = 1250 Hz, on/off ratio 1:1, pulse width max. 10 s.?Pulse output: pulse value and pulse polarity selectable, max. pulse widthconfigurable(0.5...2000 msPromag 53Current output:active/passive selectable, galvanically isolated, time constant selectable (0.01...100 s,full scale value selectable, temperature coefficient: typically 0.005% o.r./C; resolution: 0.5 A ?active: 0/4 …20 mA, RL < 700 ? (HART: RL > 250 ? ?passive:4--20 mA, max. 30 V DC, Ri < 150 ?Pulse/frequency output:active/passive selectable, galvanically isolated (Ex i version: only passive?active: 24 V DC, 25 mA (max. 250 mA during 20 ms, RL > 100 ??passive: open collector, 30 V DC, 250 mA?Frequency output: full scale frequency 2...10000 Hz (fmax = 12500 Hz, on/off ratio 1:1, pulsewidth max. 10 s.?Pulse output: pulse value and pulse polarity adjustable, pulse width configurable (0.05...2000 msSignal on alarm?Current output f fartesponse selectable?Pulse/frequency output f failure response selectable?Status output (Promag 50 -comdunctive by fault or power supply failure?Relayoutput (Promag 53 --edergized by fault or power supply failureLoad See “Output signal ”PROline Promag 50/53 H4 . me A —w 日-小号.37K吊i,iau!SwJ讨 C&b^ bwd^- S5 360 VAC. JO s 53 V4C. ?6 .fi? VDC. pa*w cwuurrirtw J5 W / IS W4Endress+HauserSwitching outputStatus output (Promag 50:Open collector, max. 30 V DC / 250 mA, galvanically isolated.Configurable for: error messages, Empty Pipe Detection (EPD, flow direction, limit values.。