Toshiba LF414 manual Operation, Preparatory check, - 41 -, 6F8A0870, Don’T, System Check

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6. Operation

6F8A0870

6. Operation

Preparatory check CAUTION

„Do not touch the terminal board when power is supplied.

Touching the terminal board when power is supplied can

DON’T

cause electric shock.

„Do not touch the main body when high temperature fluid is being measured.

The fluid raises the main body temperature and can cause burns.

DON’T

Preparatory check

Follow the procedure described below to prepare before starting the flow measurement (described with regard to the entire flowmeter).

System Check

Check the items listed below

„Check the wiring between the converter and related instruments.

„Make sure all the bolts of connection flanges on which the flowmeter is mounted securely tightened.

„Make sure the direction of flow arrow is in accordance with actual flow.

„Make sure the flowmeter is grounded with 100 ohm or less ground resistance.

„Make sure the housing covers are securely tightened.

Placing System On-Stream

„Let the fluid go through the detector pipe. (Note 1)

„When the detector is filled with the fluid, stop the fluid and keep it still in the detector pipe.

Supplying Electric Power

„Make sure the power supply is as specified.

Checking Converter Parameters

„Check the configuration parameter settings. Refer to combined converter's manual.

Zero Adjustment

„Wait for 30 minutes to warm up the flowmeter. Then making sure the fluid holds still in the detector pipe, starts the zero adjustment. Refer to combined converter's manual.

On-line measurement

„After checking the items and conducting the zero adjustment as listed above, let the fluid go through the detector pipe. Output (4–20 mA dc) directly proportional to the flow rate can be obtained.

Note 1: If the detector pipe is not filled with the fluid to be measured, the flow rate will be indefinite and unable to be measured. Before using the flowmeter , be sure to fill the detector pipe the fluid to be measured.

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Contents 6F8A0870 About Safety Precautions 6F8A0870- 1 - Integral type LF414/LF600F, LF414/LF610F, LF414/LF620FSafety symbols SAFETY PRECAUTIONSExplanation of signal words - 2 -DON’T SAFETY PRECAUTIONS Safety Precautions for Installation and Wiring- 3 - „ Do not modify or disassemble the enclosureDON’T SAFETY PRECAUTIONS continuedSafety Precautions for Installation and Wiring - 4 -Usage limitation Safety Precautions for Maintenance and InspectionWarranty and Limitation of Liability - 5 -・Places where excessive vibration or mechanical shock occurs Handling Precautions- 6 - 2 Wire cables correctly and securelyHandling Precautions continued - 7 -Table of Contents - 8 -1.2 Strage 1. Product Inspection and Storage1.1 Product Inspection - 9 -- 10 - Features2. Overview 5 Intelligent functions3.1.1 Appearance of LF414/LF600F, LF414/LF610F 3. Names of Parts3.1 Appearance Integral 1 Meter size of 1/2 inch 15mmFigure 3.1.2 Appearance of LF414/LF600F, LF610F Meter size 1 inch25mm 2 Meter size of 1inch 25mm- 12 - Ground terminal for converterFigure 3.1.3 Appearance of LF414/LF600F, LF610F 3 Meter size of 1 1/2 to 4 inch 40 to 100mm- 13 - Meter size 1 1/2 to 4 inch 40 to 100mmLifting Lugs 4 Meter size of 6 and 8 inch 150 and 200mm- 14 - providedFigure 3.1.5 Appearance of LF414/LF620F Meter size 1/2inch15mm 3.1.2 Appearance of LF414/LF620F- 15 - Ground terminal for converter Flow direction arrow Detector- 16 - Figure 3.1.6 Appearance of LF414/LF620F Meter size 1 inch25mmGround terminal for converter Flow direction arrow - 17 - Figure 3.1.7 Appearance of LF414/LF620FMeter size 6 and 8 inch 150 and 200mm - 18 -Figure 3.1.8 Appearance of LF414/LF620F Ground terminal for converter Lifting Lugs- 19 - 3.1.3 Appearance of LF414Separate 1 Meter size of 1/2 inch 15mm Signal cableFigure 3.1.10 Appearance of LF414 Meter size 1 inch25mm - 20 -for Signal cable for Excitation cableFigure 3.1.11 Appearance of LF414 - 21 -Signal cable Excitation cable- 22 - Figure 3.1.12 Appearance of LF414Meter size 6 and 8 inch150 and 200mm 3.2.2 Terminal Block Construction of LF414 Type Signal cable terminal3.2 Construction of the terminal blocks - 23 -- 24 - 4. InstallationSafety Precautions for Installation „ Use an appropriate device to carry and install- 25 - 4.1 Notes on Selecting the Installation Location4.2 Mounting Procedure 4.2.1 Pipe checks 2. Avoid places where excessive pipe vibration occurs- 26 - Figure 4.2 Example of Pipe Fixing ProcedureFigure 4.3 Model Diagram of Unsupported Pipes 4.2.2 Installation Procedure - 27 -Figure 4.4 LF414 flowmeter detector piping connections - 28 - Table 4.1 Bolt length and Nut tightening torque4.3 Piping Connections 1a Ideal Upstream Straight Pipe Length Installation Requirements1b Optional “Mount Anywhere” Installation Mount-Anywhere Technology L=5DFigure 4.6 Installation position of the detector 2 Pipe Orientation- 30 - Figure 4.5 Detector Piping Orientation- 31 - 3 Flow Direction4 Preventing an Empty Pipe Condition Figure 4.7 Flow direction arrow on the detector- 32 - 4.4 Grounding1 Grounding of the LF414/LF620F type Figure 4.10 Grounding the LF414/LF620F Type2 Grounding of the LF414 type - 33 -5.Wiring Safety Precautions for Wiring- 34 - „ Install a switch and fuse to isolate the 6F8A0870- 35 - independently from power equipment. 100 ohm- 36 - Notes on wiring5.1 Cables Table 5.1 Installation Cables5.2 External Device Connections and Grounding 5.3 Notes on Wiring 5.3.1 Notes on Instrumentation-Converter Wiring5.3.2 Notes on Wiring of the Separate type LF414 - 37 -Separate 2 Excitation cable 5.4 Wiring 5.4.1 Terminal Treatment of Cables1 Power cable, current output cable, digital I/O cables - 38 -- 39 - 3 Connecting the input signal cableNotes on signal cable shield processing work Figure 5.3 Terminal Treatment of Flow Rate Signal Cable5.4.2 Cable Connection - 40 -Figure 5.5 Connecting a Cable to Terminal Block - 41 - 6. OperationPreparatory check „ Check the wiring between the converter and related instruments- 42 - 7. Maintenance and TroubleshootingSafety precaution for Maintenance and Troubleshooting „ Do not conduct wiring work when power is appliedCheck/Replacement of the display unit 7.1 Maintenance„ Cleaning materials- 44 - 7.2 Troubleshooting7.2.1 Flow rate is not indicated START Are power supplies correct NO for each device? YESPerform the zero adjustment Refer to combined converters manual 7.2.2 Flow rate indicated is not correct- 45 - Clean the inside of the detector pipeIs power supply voltage 7.2.3 Flow rate indication is not stable- 46 - Use a power supply within the specified range8. Principle of Operation - 47 -Square-Wave Excitation Figure 8.1 Principle of Operation - 48 - 9. Specifications9.1Specifications Measurement range in terms of flow velocity- 49 - Electrical conductivity μS/cmFigure 9.1 Electrical Conductivity vs. Cable Length - 50 - Table 9.1 Standard Flow RangeUnit gal/min - 51 -Table 9.2 Flow velocity vs. flow volume Unit m3/hTable 9.3 Type Specification Code - 52 -9.2 Type Specification Code Table 9.4 Type Specification Code Exciting Cable and Signal Cable - 53 -Exciting cable length Nominal cross-sectional area Overall diameter 1 Meter size of 1/2 inch 15mm 10. Outline Dimensions10.1 Outline dimensions of LF414/LF600F, LF414/LF610F 2 Meter size of 1 inch 25mm3 Meter size of 1 1/2 to 8 inch 40 to 200mm - 55 -10.2 Outline dimensions of LF414/LF620F - 56 -Waight approx 9 lb 4kg - 57 - 10.3 Outline dimensions of LF414 - 58 -Waight approx 7 lb 3kg - 59 - Appendix 1-1 A system block diagram for LF414/LF600F, LF414/LF610F - 60 -1-2 A system block diagram for LF414/LF620F - 61 -2-1 A system block diagram for LF414 - 62 -Phone number ( - 63 -Distributor Address Name Product codeFCF50017