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2. Overview
The electromagnetic flowmeter is an instrument to measure the volumetric flow rate of conductive
fluids using Faraday's law of electromagnetic induction.
The flowmeter consists of a detector which generates a signal of electromotive force proportional to
the flow rate of the fluid and detects this signal, and a converter which converts the signal detected by
the detector to a unified signal output.
Features
The electromagnetic flowmeter has features such as:
• No pressure loss by piping
• Flow measurement can be made not affected by conditions such as fluid temperature, pressure,
density and flow condition.
• It is easy to read the flow indication because a liner relation exists between the flow rate and
output signal.
The LF232 converter has additional features described below:
(1) High accuracy measurement of ±0.5% of rate can be obtained in the velocity range of 1.0ft/s to
32.8ft/s (0.3m/s to 10m/s). (Measurement range and accuracy are different by detector.)
(2) Stable measurement can be made even with fluids containing solids (sludge and slurry).
•The unique Noise-Sentry filter circuit and arithmetic logic unit (ALU) enables you to obtain a
stable output.
(3) The converter is equipped with various display and output functions.
• Various display and output functions can be easily set by switch operation.
• The converter is equipped with worldwide standard HART* protocol communication.
(4) Use of infrared switches
• Use of infrared switches allows you to perform various operations without opening the converter
housing cover.
(5) Easy-to-read liquid crystal display (16 characters × 2 lines)
• It is easy to read the indication even in a dark place by means of backlight.
* HART protocol··········“HART” stands for Highway Addressable Remote Transducer and is a
communication protocol recommended by HCF (HART communication
Foundation) for industrial sensors.