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2. Overview
LF516/LF546 electromagnetic flowmeter can be use in the following hazardous (classified)
locations.
Class , Division 2, Groups A, B, C and D,
Class , Division 2, Groups E, F and G
Class
This product is
electromagnetic flowmeter that measure the volumetric flow rate of conductive fluid using
Faraday's law of electromagnetic induction.
The device consists of two units: the detector, through which the fluid to be measured flows, and the
converter, which receives the electromotive force signals from the detector, then converts the signals
into the 4–20 mA
dc signal.
Features
With a linear relationship between the flow rate and output signal, the electromagnetic flowmeter is
featured as an easy-to-read indicator. In addition to this feature, it has the following outstanding features:
(1) Low electric conductivity fluid (Electric conductivity 0.01μS/cm or more) can be measured
(2) Wide flow velocity range setting, such as a flow velocity range of 0~0.5 and 0~10m/s, is achieved.
(3) This flowmeter can be used to measure fluid even if it contains high concentration of slurry
Ceramics is used for the detector pipe as standard.
The unique Noise-Sentry filter circuit and its advanced Arithmetic Logic Unit (ALU)
enables you to obtain a stable output.
(4) Full graphic electronically rotatable LCD that enables display of a large amount of information
1. With a large amount of a maximum of 9 characters x 7 lines, you can easily check various
displays including bar graphs and alarm indications.
2. The backlight allows you to read the indicator easily.
(5) Use of infrared switches
• Use of infrared switches allows you to perform various operations, without opening the converter
housing cover.
(6) Intelligent functions
• The widely used HART protocol
*1
communications system is used as a standard feature.
• This product supports PROFIBUS
*2
communication by option.
* 1 HART protocol: “HART” stands for Highway Addressable Remote Transducer and is a communication protocol
recommended by HCF (HART communication Foundation) for industrial sensors.
* 2 PROFIBUS: PROFIBUS, which stands for PROCESS FIELDBUS, is a kind of field bus that is approved by
nternational standard IEC61158. The electromagnetic flowmeter supports PRFIBUS PA for process
automation.