Manual de instrucciones de Toshiba LF232*F

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LF502/LF232*F
Electromagnetic Flowmeter for
6” to 24”

Partially-filled Pipes
(150 to 600 mm )


Introduction
The LF502 electromagnetic flowmeter uses Faraday’s
Law of electromagnetic induction in the same way as
conventional electromagnetic flowmeters to measure
the flow rate. Position of electrodes in the LF502 is so
designed that it can be used even in a partially-filled
pipe to measure the flow rate.
Improved functional magnetic field distribution
technique enables a high

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TIC-LF502A ■ Model LF232*F converter Required straight pipe length: Input signals 10D minimum on upstream side and 5D minimum on downstream side Analog signal — the voltage signal from detector, Note: D is a nominal meter size. proportional to process flow rate. Fluid conductivity: 100µS/cm minimum Digital input DI (opt.) th Fluid temperature: 32 to 131 °F (0 to 55 °C ) (added when 9 digit of specification code is ”3”) Voltage level: High level 20 to 30 V dc Ambient temperature:

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TIC-LF502A independently) Parameter settings—Parameters can be set as follows In the case of DO1 •IR Switches: Various parameters can be set without Pulse rate: 3.6 to 3,600,000 pulses/h opening the converter housing using 4 infrared Pulse width:Settable within the range of 0.3 to switches (password can be set) 500ms •Zero adjustment: Zero point adjustment can be In the case of DO2 started by pressing the switch in the converter. Pulse rate: 3.6 to 360,000 pulses/h •Digital comm

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TIC-LF502A Installation ■ ■ Dimensions Dimensions Separate type LF502 (Meter size 10” to 24”) Separate type LF502 (Meter size 6” and 8”) Unit: inch (mm) Unit: inch (mm) 3.46 (88) 4.96 (126) 4.96 (126) 3.46 (88) 1.42 (36) 1.57 (40) 5.63 (143) 1.42 (36) 5.63 (143) 1.57 (40) 11.81(300) Roll-prevention base Figure 4. Detector Dimensions for Meter Sizes Figure 3. Detector Dimensions for Meter Sizes 10” (250 mm) to 24” (600 mm) 6” (150 mm) and 8” (200 mm ) See the follow

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TIC-LF502A ■ Dimensions 9.33 (237) Installation method 4- φ12 hole 据付方法 6.10 (155) 8.74 (222) 据付けは、パネル(壁面)取付けか 2.91 (74) パイプ取付けで行います。 指定された取付用ボルト・ ナットが付 属します。 In the case of 2B pipe installation 2B パ イプ取 付け の場合 M10 U ボルト M10 U bolts 2B(50mm)パイプ Signal cable ground Output cable ground パ ネル取 付穴加 工寸 法 Power supply cable ground 11 to 12 φhole 2.91 (74) 11～12φ 穴 74 (4ヵ所) 4 places Grounding terminal 2.99 (76)

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TIC-LF502A ■ External Connections Terminal box Power supply Ⅳ wire 2 (CVV) 5.5mm or more Power supply Grounded with 100 Ω or less ground resistance Current output (4 to 20mA) Digital input 2 (opt.) Thick walled steel conduit Digital input 1 (opt.) (20 to 30 Vdc) Digital output 4 (opt.) Digital output 3 (opt.) Digital output 2 (opt.) Detector Signal cable Digital output (2-wire shielded hard-rubber sheathed cable) Excitation

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TIC-LF502A ■ About establishment environment ■ Piping Precautions Do not store or install the flowmeter: (1) Flange connection • Where there is direct sunlight. The flowmeter has upstream and downstream • Where excessive vibration or mechanical shock flanges on the ends of detector pipe. Connect occurs. these flanges with the flanges on both sides of • Where high temperature or high humidity pipeline bore using connection bolts after conditions exist. inserting a gasket between th

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TIC-LF502A Table 1. Specification Code for LF502 detector Model Specification Code Size Description 1 2 3 4 5 6 7 8 9 10 11 12 A B L F 5 0 2 LF502 Electromagnetic flowmeter Meter size K 6" (150mm ) - L 8" (200mm ) - M 10" (250mm ) - N 12" (300mm ) - P 14" (350mm ) - Q 16" (400mm ) - R 20" (500mm ) - S 24" (600mm ) - A Standard Connec