PEM-500
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Electromagnetic flowmeter type PEM-500 [ [ [ [ [ [ sion al ver ithout i c e p s w New tallation ections s s t n i u for ght in/o i a str Nominal size: DN 10...300 (ANSI 0,5...12") Maximum static pressure 1,6 MPa, 2,5 MPa or 4 MPa Accuracy 0,5% Output signal 4 ÷ 20 mA, pulse output or frequecy output Communication interface Modbus RTU / RS485 Version for installation without straight in/out sections or power supply cable (version 90...260 VAC) HMI panel for panel mounting Power supply cable (version 90...360 VAC) Power supply and signal cable Application and construction Electromagnetic flowmeter type PEM-500 is applicable to the measurement of flow of the liquids with minimum conductivity of 5ěS/cm. Device measures flow and volume of liquids in both directions of flow. For correct measurement pipe of sensor has to be fully filled by liquid. Sensor doesn’t have any mechanical parts inside flow tube which ensure undisturbed flow of medium. Flowmeter is able to measure flow of medium like pure liquids but also pastes and chemically aggressive liquids. It’s applicable is in water treatment facilities for flow measure of water and wastewater, chemical industry, food industry or heat plants. Compact construction with ingress protection rating IP68 (special version) allows to bury device underground. Sensors and control unit of electromagnetic flowmeter PEM-500 can’t be disconnected by user. The casing of the control unit is made of aluminium alloy cast. User has no access to the electronic boards. Electrical connection of flowmeter is provided by the factory assembled cables. Wires in cables are marked by colours or numbers (detailed description available in table). Number of cable depends on version of power supply. Version with power supply 90…260 VAC is equipped with two separate cables – signal cable and power supply cable. Version with power supply 10…36 VDC is equipped with one Optionally remote HMI panel is used to visualize metrological data and to configure electromagnetic flowmeters PEM-500 model, which is not equipped with a local display. The HMI user has remote access to the connected flowmeter allowing: - full access to the flow meter menu after logging in - reading current flow rate and totalizer values - viewing diagnostic and information screens. HMI panel is avaliable also in case for wall mounting. signal-supply cable. In standard flowmeter is equipped with 3m long cables. Other cable length are available on request. As an option PEM-500 flowmeter can be delivered with junction box PPPEM with ingress protection class IP67 with factory connected flowmeter’s cable which allows users connecting cables to terminals. Flowsensor tube have flanges (which allows to mount sensor in pipeline), inner electrodes and isolating pipe lining (both matched to measured medium). Electrodes in standard are made of stainless steel but as option user can choose other materials appropriate for chemical characteristic of measured medium. Configuration and communication Configuration and communication is handled by interface RS485 and Modbus RTU protocol. User can communicate with PEM-500 flowmeter by using PC computer with RS-485/USB converter and software RAPORT 2 or any other software which can refer to registers described in interface’s documentation. User have possibility of programing for example: empty pipe detection, low flow detection, alarms or registering of measured values or events. For visual indication of measurement user can use HMI panels working as Modbu

Dimensions of sensor PN 16 Estimated weight [kg] Recommendations regarding installation * DN - moninal diameter of sensor Recommended location Marking of wires in cables Power supply 2-state output Pulse/frequency output Current output 4÷20mA 2-state input (passive) Grounding Colour Blue Brown Transparent Grey Pink Violet Red Black Black-white Blue-white Orange Beige Green-yellow Reverse polarity protection, galvanic insulation, passive Reverse polarity protection, galvanic insulation, passive (+) Active (passive on request) (-) RS 485 A RS 485 B RS 485 GND/shield Reverse polarity...

Technical details ³ 5µS/cm ³ 1010W ±0,5% of reading at 20...100% Q(10m/s) Minimal electrical conductivity of the medium Input resistance Accuracy* Accuracy [% of reading] Accuracy in fuction of flow speed * Reference conditions according to PN-EN 29104:2003 Low flow rejection Actual flow Totalizers Low flow alarm Configuration Empty pipe detection Analogue outputs Pulse/frequency outputs 2-state output OC Communication output 2-state input Power supply Ingress protection class Special version Nominal diameters Max. static pressure Special version Process connection Ambient temperature Liner...

Choosing of size and measuring range of flowmeter Choosing the most suitable diameter of senor tube depends on diameter of pipeline where flowmeter will be installed but also on value of flow of liquid in this pipeline. Minimal measuring range for flowmeter corresponds to flow speed 0,3 m/s and maximum measuring range corresponds to flow speed 10 m/s. Optimal and recommended values of measuring ranges correspond with flow speed in range from 2 to 3, 5m/s. Factory setting of measuring ranges considering optimal flow speeds are indicated in below table. Measurement of flow for linear flow...