Toshiba LF664 Instruction Manual
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Toshiba LF664 Instruction Manual

Toshiba LF664 Instruction Manual

Electromagnetic flowmeter detector
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ELECTROMAGNETIC  FLOWMETER  DETECTOR
 
NOTES
Before using the equipment, please read this manual carefully and understand the
contents, and then use the equipment correctly.
• NEVER attempt to operate the equipment in any ways that are not described in this
instruction manual.
• After reading this manual, store it with care in a place where it can be referred to
whenever needed.
• Please be sure that this manual is delivered to the personnel who will use this product.
MODEL LF664
INSTRUCTION MANUAL
６Ｆ８Ａ０９４３

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  • Page 1     ６Ｆ８Ａ０９４３   ELECTROMAGNETIC  FLOWMETER  DETECTOR MODEL LF664 INSTRUCTION MANUAL   NOTES Before using the equipment, please read this manual carefully and understand the contents, and then use the equipment correctly. • NEVER attempt to operate the equipment in any ways that are not described in this instruction manual.
  • Page 2 ６Ｆ８Ａ０９４３     NOTICE We thank you very much for your purchase of our LF664 series electromagnetic flowmeter detector. Integral type LF664/LF620F Separate type detector LF664 This instruction manual describes the notes on using an electromagnetic flowmeter detector, installation, configuration and maintenance. It is intended for the personnel in charge of installation, operation and maintenance.

  • Page 3: Safety Precautions

    ６Ｆ８Ａ０９４３     SAFETY PRECAUTIONS Safety signs and labels affixed to the product and/or described in this manual give important information for using the product safely. They help prevent damage to property and obviate hazards for persons using the product. Make yourself familiar with signal words and symbols used for safety signs and labels.
  • Page 4 Install a switch and fuse to isolate Do not modify or disassemble the the LF664 from mains power. LF664 unnecessarily. Power supply from mains Modifying or power can cause electric disassem-bling this...
  • Page 5 Disclaimer Toshiba does not accept liability for any damage or loss, material or personal, caused as a direct or indirect result of the operation of this product in connection with, or due to, the occurrence of any event of force majeure (including fire or earthquake) or the misuse of this product, whether intentional or accidental.

  • Page 6: Safety And Handling Precautions

    Therefore, wear nonconductive gloves whenever you work on piping or wiring. (2) Do not use the LF664 detector in a way other than those specified in this manual. It may cause malfunction or damage to this product.

  • Page 7: Table Of Contents

    8. Principle of Operation ··················································································· 37 9. Specifications ·································································································· 38 9.1 Specifications ····························································································· 38 9.2 Type Specification Code ············································································ 42 10. Outline Dimensions ·························································································· 44 10.1 Outline dimensions of LF664/LF620F ····················································· 44 10.2 Outline dimensions of LF664 ··································································· 46 — —...

  • Page 8: Product Inspection And Storage

    1.2 Storage To store the LF664 detector after opening the package but you will install it at a later date, select a storing place as follows and keep it under the conditions as described: (1) Avoid the place where there is direct sunlight, rain or wind.

  • Page 9: Overview

    ６Ｆ８Ａ０９４３     2. Overview The LF664/LF620F and LF664 electromagnetic flowmeter can be use in the following hazardous (classified) locations. ClassⅠ,Ⅱ,Ⅲ, Division 2, Groups A-G The electromagnetic flowmeter measures the volumetric flow rates of electrically conductive materials based on Faraday's Law of electromagnetic induction.

  • Page 10: Names Of Parts

    For the detail of the converter, check the converter   LF620F LF620F instruction manual. Converter LF620F For power cable 1/2-14NPT Hanging hooks For I/O cable 1/2-14NPT Detector LF664 Ground cable Figure 3.1.1 Appearance of the LF664/LF620F Meter size 20”(500mm), 24”(600mm) — —...
  • Page 11 For the detail of the converter, check the converter   LF620F LF620F instruction manual. Converter LF620F For power cable Hanging hooks 1/2-14NPT For I/O cable 1/2-14NPT Detector LF664 Ground cable Figure 3.1.2 Appearance of the LF664/LF620F Meter size 28”(700mm) to 36”(900mm) — —...
  • Page 12   3.1.2 Appearance of LF664 (1) Meter size 20”(500mm), 24”(600mm)   LF622F For excitation cable For signal cable Terminal box 1/2-14NPT 1/2-14NPT Hanging hooks Detector LF664 Ground cable Figure 3.1.3 Appearance of the LF664 Meter size 20”(500mm), 24”(600mm) — —...
  • Page 13 ６Ｆ８Ａ０９４３     (2) Meter size 28”(700mm) to 78”(1950mm)   LF622F For excitation cable For signal cable Terminal box 1/2-14NPT 1/2-14NPT Hanging hooks Detector LF664 Ground cable Figure 3.1.4 Appearance of the LF664 Meter size 28”(700mm) to 78”(1950mm) — —...

  • Page 14: Construction Of The Terminal Blocks

    ６Ｆ８Ａ０９４３     3.2 Construction of the terminal blocks 3.2.1 Terminal Block Construction of LF664/LF620F Type For the detail of the converter, check the converter LF620F instruction manual.   LF620F 3.2.2 Terminal Block Construction of LF664 Type   LF622F Don’t connect wiring to this terminal.

  • Page 15: Installation

    Install a switch and fuse to isolate the Do not modify or disassemble the LF664/LF620F and LF664 from mains power. LF664/LF620F and LF664 unnecessarily. Power supply from mains power Modifying or disassembling this product...

  • Page 16: Notes On Selecting The Installation Location

    ６Ｆ８Ａ０９４３     4.1 Notes on Selecting the Installation Location Avoid places within the immediate proximity of equipment producing electrical interference (such as motors, transformers, radio transmitters, electrolytic cells, or other equipment causing electromagnetic or electrostatic interference). Avoid places where excessive pipe vibration occurs. Avoid places where fluid is pumped in a pulsating manner Avoid places where there is direct sunlight.

  • Page 17: Mounting Procedure

    4.2.1 Piping Connections The LF664 detector has flanges on both ends of detector main body. To mount the LF664, refer to Figure 4.1 and follow the procedure below: Place one of the flange packing next to the upstream (or downstream) pipe flange.
  • Page 18 863〜1078 60” (1500) 1-3/4 1058〜1323 66” (1650) 1-3/4 1066〜1332 72” (1800) 1-3/4 1431〜1789 78” (1950) *1: 1[N ･m] is 0.7376 [ft･lbf]. Downstream flange Upstream flange Connection bolt Packing Flow direction Detector Figure 4.1 The LF664 detector piping connections — —...
  • Page 19 Wire or cloth belt 90°or less 90°or less Wire or cloth belt is used. is used. (b) Meter size 20” and 24”(500mm and 600mm) (a) Meter size 28” and over (700mm and over) Figure 4.2 Transportation of LF664 flowmeter detector — —...

  • Page 20: Precautions Of Piping

    A minimum of 3D (diameter) length of upstream straight pipe from the flange is required to maintain the performance specification. NOTE The test results were obtained and demonstrated at Toshiba admitted flow calibration facility. —...
  • Page 21 ６Ｆ８Ａ０９４３     (2) Pipe Orientation The detector may be installed in horizontal, vertical or sloping pipe runs as shown in Figure 4.2. However, except for horizontal installation, fluid should flow from lower to upper directions. If no air bubble, Vertical down flow application are acceptable under pressured piping conditions.
  • Page 22 ６Ｆ８Ａ０９４３     (3) Flow Direction Install the detector in accordance with the flow direction arrow on the detector. (4) Full Pipe Condition Design an upright pipe run (Figure 4.5) or enough water head (Fig. 4.6) at the downstream detector outlet if there is a possibility of the detector pipe being emptied.

  • Page 23: Grounding

    DON’T DON’T (1) Grounding of the LF664/LF620F type Ground as shown in Figure 4.11. Make the grounding wire as short as possible. Use grounding wire material of IV wire 5.5mm or more. Do not share a grounding wire with other instruments where grounding current may flow.
  • Page 24 • If the piping material is conductive, connect the • If the piping material is non-conductive, perform grounding grounding wires to the both ends of the piping flange. resistance 100Ω or less. Figure 4.8 Grounding the LF664 Type Detector — —...

  • Page 25: Wiring

    ６Ｆ８Ａ０９４３     5. Wiring Safety Precautions for Wiring WARNING DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS LOCATION IS KNOWN TO BE NONHAZARDOUS. Live part of electric circuit or a high temperature department can cause explosion. DON’T Do not active live circuits While assembly of all components is not over. Protective performance degradation for hazardous location can cause explosion.
  • Page 26       Install a switch and fuse to isolate the Turn off mains power before conducting wiring LF664/LF620F and LF664 from mains power. work. Power supply from mains power can Wiring while power is applied can cause cause electric shock or circuit electric shock.

  • Page 27: Cables

    ６Ｆ８Ａ０９４３     Notes on wiring CAUTION     (1) The apparatus does not be provided with the cable connections. Please prepare yourself for the cable connections which could be used in Division2 hazardous locations. The cable lead –in section must be tightened securely to keep air tightness. (2) Select the cable runs away from electrical equipment (motors, transformers, or radio transmitters) which causes electromagnetic or electrostatic interference.

  • Page 28: External Device Connections And Grounding

    When replacing the flow rate signal cable and excitation cable, also refer to the instruction manual of the relevant detector. Order the detector terminal box cover packing from Toshiba or a Toshiba distributor.

  • Page 29: Wiring

    ６Ｆ８Ａ０９４３     5.4 Wiring 5.4.1 Terminal Treatment of Cables Follow the procedures below to treat the terminals (at the converter side) of various cables and install the cables to the terminal block. Use appropriate cables based on the description in Section 5.1 "Cables."...
  • Page 30 ６Ｆ８Ａ０９４３     (3) Connecting the input signal cable Strip the sheath from the end of each conductor of a 2-core individually shielded cable as shown in Figure 5.4. Twist those shields and cover them with a thermal contraction tube or vinyl tube not to make contact with the case or core wires.
  • Page 31 ６Ｆ８Ａ０９４３       5.4.2 Cable Connection   LF622F Connect and install the terminal-treated cables to the terminal block. *Connect the cables to the terminal block securely. A loose connection may cause incorrect measurement. After connecting a cable, try to pull it to check whether it has been connected securely.

  • Page 32: Operation

    ６Ｆ８Ａ０９４３     6. Operation CAUTION Do not touch the terminal board when Do not touch the main body when high power is supplied. temperature fluid is being measured. Touching the terminal board The fluid raises the main body when power is supplied can temperature and can cause burns.

  • Page 33: Maintenance And Troubleshooting

    Appendix 1. Unsuitable conduit connections for hazardous location can cause explosion. CAUTION Do not conduct wiring work when Do not touch the LF664/LF620F and power is applied. LF664 main body when high temperature fluid is being measured. Wiring while power is applied The fluid raises the main body can cause electric shock.

  • Page 34: Maintenance

    ６Ｆ８Ａ０９４３     7.1 Maintenance Cleaning Adhesion might be created in the detector over a long period of time when used on certain materials. Try to confirm whether to cause the adhesion in the detector pipe when the phenomenon is seen, and an abnormality (ex.

  • Page 35: Troubleshooting

        7.2 Troubleshooting If a problem occurs while using the LF664/LF620F, LF664/LF622F follow the flowcharts described below. You may find a way to solve the problem. The flowcharts are based on three symptoms (1) to (3). If you cannot solve the problem, contact your nearest Toshiba representative.
  • Page 36 Connect the two load resistors in resistors connected to series, if necessary. the output in parallel? Is accuracy calculated as follows? Calculate as shown on the left. (Measured flow rate)-(Actual flow rate) × 100% Actual flow rate Contact your nearest Toshiba representative. — —...
  • Page 37 Note 1: If the detector tube is not filled with operating fluid, the flow is indefinite and measurement is impossible. Be sure to fill Contact your nearest Toshiba the detector tube with operating fluid representative.  ...

  • Page 38: Principle Of Operation

    Figure 8.1 Principle of Operation The LF664 flange-type electromagnetic flowmeter uses square-wave excitation method, which provides a long-term stable operation. With square-wave excitation, the LF664 offers reliable measurement without being affected by electrostatic or electromagnetic interference, or electrochemical polarization between the electrode and the fluid to be measured.

  • Page 39: Specifications

    ６Ｆ８Ａ０９４３     9. Specifications Overall specifications of the LF664 detector and type specification code tables to specify each item of the detector specifications are described in the following sections. 9.1 Specifications Meter size: ANSI 150 20”, 24” (500, 600mm) AWWA class D 28”, 30”, 32”, 36”, 40”, 42”, 48”, 54”, 60”, 66”, 72”, 78”...
  • Page 40 ６Ｆ８Ａ０９４３     Principal materials: Case・・・・carbon steel Lining・・・Natural rubber Electrodes・・・AISI316L (std.), Titanium (opt.), Hastelloy C equivalent (opt.) Grounding rings・・・None (std.), AISI304(opt), AISI316(opt), Titanium (opt.), Hastelloy C equivalent (opt.) Measuring tube・・・AISI304 Coating: Polyurethane coating (std.), pearl-gray colored Note: If the optional IP68 and NEMA 6P continuous submersible type structure is specified, the coating is tar epoxy resin coating.
  • Page 41 ６Ｆ８Ａ０９４３     Flow and calibration velocity range: specified. It calibration by standard Range shown in the table below when Range is not It calibration when there is specification by flowing quantity Range in which the customer is specified. Is this specification Range flowing quantity of Table 9.2. Please confirm becoming in the upper bound value from the flow velocity chart.
  • Page 42 ６Ｆ８Ａ０９４３     To select the meter size: See Table 9.3 and find meter sizes within the velocity of 0.3 to 10 m/s for a specified full-scale (measuring range high limit) flow. Select one that has its full-scale velocity between 1 and 3 m/s.

  • Page 43: Type Specification Code

    ６Ｆ８Ａ０９４３     9.2 Type Specification Code Table 9.3 Type Specification Code (Model LF664 Detector) Model number Specification code Contents Electromagnetic flowmeter detector ● Hazardous location certification type Meter size 20” (500mm) ● 24” (600mm) ● 28” (700mm) ● 30” (750mm) ●...
  • Page 44 ６Ｆ８Ａ０９４３     Table 9.4 Type Specification Code (Exciting Cable and Signal Cable) Model Specification Code Description 1 2 3 A C C Dedicated preformed cable Nominal cross-sectional area of Exciting cable (Note 1) 1.25 mm² 2 mm² Nominal cross-sectional area of Signal cable (Note 2) 0.75 mm²...

  • Page 45: Outline Dimensions

    ６Ｆ８Ａ０９４３     10. Outline Dimensions 10.1 Outline dimensions of LF664/LF620F ■ Meter size 20”(500mm), 24” (600mm) ANSI class 150 dimensions: Meter size Weight inch (mm) inch (mm) inch (mm) inch (mm) lb(kg) 20” (500) 23.62 (600) 17.54 (445.5) 31.29 (794.8) 530 (240) 24”...
  • Page 46 ６Ｆ８Ａ０９４３     ■ Meter size 28”(700mm) to 36” (900mm) AWWA class D dimensions: Meter size Weight inch (mm) inch (mm) inch (mm) inch (mm) lb(kg) 28” (700) 27.56 (700) 21.79 (553.5) 40.04 (1017.1) 640 (290) 30” (750) 29.53 (750) 22.80 (579.0) 42.17 (1137.8) 710 (320)

  • Page 47: Outline Dimensions Of Lf664

    ６Ｆ８Ａ０９４３     10.2 Outline dimensions of LF664 ■ Meter size 20”(500mm), 24” (600mm) ANSI class 150 dimensions: Meter size Weight inch (mm) inch (mm) inch (mm) inch (mm) lb(kg) 20” (500) 23.62 (600) 16.24 (413) 29.99 (762) 530 (240) 24”...
  • Page 48 ６Ｆ８Ａ０９４３     ■ Meter size 28”(700mm) to 78” (1950mm) ANSI class 150 dimensions: Meter size Weight inch (mm) inch (mm) inch (mm) inch (mm) lb(kg) 28” (700) 27.56 (700) 20.49 (521) 38.74 (984) 640 (290) 30”(750) 29.53 (750) 22.62 (575) 41.99 (1067) 710 (320) 32”(800)
  • Page 49 ６Ｆ８Ａ０９４３               Write down the address and phone number of the distributor from which you purchased this product, the product code, SER.NO. and so on. Distributor Address Name Phone number （      ） −...
  • Page 50    ...

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