Toshiba LF410 Manual

EJL-136FIntroductionThe electromagnetic flowmeter uses Faraday’s Law ofelectromagnetic induction to measure the process flow.The device consists of two units: a detector, throughwhich the fluid to be measured flows and in whichlow-level signals proportional to flow rates areobtained; and a converter, which supplies excitationcurrent to the detector, and amplifies the signals fromthe detector and then processes and converts the signalsinto the 4–20mAdc current signal or communicationsignal. The meter features a Mount- Anywheremagnetic field distribution technology, the meter ishighly immune to upstream flow disturbances.Combined with a multi-functional converter LF620(combined type) or LF622 (separate type) equippedwith its patented Noise-Sentry original noise-suppression circuit and advanced algorithms. TheLF410 has a very high tolerance to noise, giving theunit a very stable output even for slurry fluidmeasurement. IR (Infrared) switches enable parametersetting of the converter without removing the cover.Flow direction can be set in either way, and its unique128 x 128 dot matrix LCD display allows the LCD tobe rotated electronically to 90, 180 and 270 degreeswithout opening the cover.*1: HART protocol (Highway Addressable RemoteTransducer) is a communication protocol for industrialsensors recommended by the HCF (HARTCommunication Foundation).** DevComm2000 Smart Device Communicator available forperforming HART device configurations on PC or laptop isavailable through the supplier .*2: PROFIBUS is the communication protocol for factoryand process automation that the PROFIBUSOrganization recommends. Instead of analog controlwith a conventional analog signal (4-20mA), it isfieldbus which digitizes all signals. Flowmeters supportPROFIBUS-PA.* Modbus is the communication protocol that Modicon Inc.developed. Physical layer is RS485.PowersupplyConverterI/ODetectorCombined typeLF410/LF620LF414/LF620FConverterPowersupplySignal cableDetectorSeparate typeLF410/LF622LF414/LF622FTerminal boxI/OFigure1. ConfigurationLF410/LF620 LF410 LF622LF414/LF620F LF414 LF622FFigure2. LF410 Mount-Anywhere seriesFlowmetersSpecifications Overall SpecificationsMeasurement range in terms of flow velocity:1.0 ft/s to 32.8 ft/s (0.3 m/s to 10 m/s).0.3 ft/s to 1.0 ft/s (0.1 m/s to 0.3 m/s)range is available optionally.Accuracy: ±±±±0.2 % of Rate** This pulse output error result is established under standardoperating conditions at Toshiba's flow calibration facility,Fuchu Japan. (NIST Traceable).* Individual meter measurement error may vary up to ±0.5% ofRate at 1.64ft/s (0.5m/s) or more and ±0.3% of rate ±0.039inch/s (1mm/s) at 1.64 ft/s (0.5 m/s) or less.* Current output: plus ± 8μA (0.05% of span.)* Refer to individual calibration data for each individual meter'smeasurement error.Fluid conductivity: 5μS/cm minimumFluid temperature:14 to 356 °F (–10 to +180°C):Separate type forceramic tube.14 to 248°F (–10 to +120°C): Combine type forceramic tubeAmbient temperature: - 4 to 140 °F ( - 20 to + 60 °C)Field Intelligent Device – Mount-Anywhere Series - WaferElectromagnetic FlowmeterLF410 /LF620LF410 /LF6221/2" to 4" (15 to 100 mm)Certification numberZ01207