e_app_1_1503_a ebook
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APPLICATION EXAMPLES4Specifications are subject to change without notice. When ordering, use the latest data sheets available at M-System web site.Petrochemical PlantsChemical PlantsMeasuring Fluid TemperatureProtection tubes like thermowell or sheath are commonly used to provide isolation between temperature sensors (thermocouple, RTD) and the environment.Head-mounted 2-wire signal conditioners are mounted in the connection head of protector tube, converting input from the sensor into a 4-20 mA DC signal.Transmitting with 4-20 mA current signal provides for the measurement accuracy without needing to invest for expensive extension wires.Displaying Tank Liquid Level in Hazardous AreaIn a hazardous area that must “eliminate conditions to induce explosions caused by electric energy”, it is avoided to use an indicator that requires high-energy consumption.The 6DV-B Loop Powered Indicator requiring only low energy from the current loop provides a bright display in hazardous locations.Controlling Pneumatic Valves OpeningIn places like oil or chemical plants, many control valves are installed in the premise to control the liquid flow volume. The SC100/200 Series Multi-function PID Controller controls the valve opening by the PID control based on the measured values from the flowmeter.Actuators for pneumatic control valves have two different types of input (control signal): pneumatic pressure signal and electric signal. For the pneumatic pressure signal, an I/P transducer is used to convert electric signal of the multi-function PID controller into pneumatic pressure signal.Multi-Function PID Controller & I/P TransducerPLCDCSSignal Conditioner with 24V supplyLightning Surge ProtectorCentral Station• Measuring Fluid Temperature• Controlling Pneumatic Valves Opening• Displaying Tank Liquid Level in Hazardous Area (explosion-proof area)4-20mA DC4-20mA DCHead-mounted 2-wire Signal Conditioner27RSHead-Mounted 2-Wire Signal ConditionersProtector TubeTankLiquid Level SensorFlowmeterFluidPneumatic ValveLightning Surge ProtectorLightning Surge ProtectorLoop Powered Field Indicator6DV-B/6DVI-BLoop Powered Field IndicatorMulti-Function PID ControllerSC SeriesMulti-Function PID Controller Actuator (Pneumatic)PV (Process Variable)MV (Manipulated Variable)4-20mA DCPneumatic Signal19.6~98.1kPaA.S.Loop Powered I/P TransducerHVPNLoop Powered I/P TransducerSignal Conditioner with 24V supplyM2DYLightning Surge Protector for Standard Signal Line & Pulse UseMDP-24-1A.S. (Air Supply)PLCDCSSignal Conditioner with 24V supplyLightning Surge ProtectorCentral StationPlantsbetween temperature sensors (thermocouple, RTD) and the environment.Head-mounted 2-wire signal conditionersprotector tube, converting input from the sensor into a 4-20 mA DC signal.Transmitting with 4-20 mA current signal provides for the measurement accuracy without needing to invest for expensive extension wires.DisplayingIn a hazardous area that must “eliminate conditions to induce explosions caused by electric energy”, it is avoided to use an indicator that requires high-energy consumption.The provides a bright display in hazardous locations.( )Lightning Surge Protector for Standard Signal Line & Pulse Use Conduit Mount, Weather-proof, 24 V DC Line Voltage MD6N-24Head-Mounted 2-Wire Signal Conditioners, Loop Powered Field Indicator, Lightning Surge Protector

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