Toshiba lf546 User Manual

 
 

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6 F 8 A 0 9 3 4  

LF516/LF546 

electromagnetic flowmeter can be use in the following hazardous (classified) 

locations. 

 

ClassⅠ, Division 2, Groups A, B, C and D, 
ClassⅡ, Division 2, Groups E, F and G 
ClassⅢ

 

 

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. 

 

 

 

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. 

・

 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)  

• 

The widely used HART protocol

 communications system is used as a standard feature.   

• 

This product supports PROFIBUS

 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.