Toshiba LF434 - Manual (Page 11)

TOSHIBA
6 F 8 A 0 7 7 0
2. Overview
The LF434/1P4U4 elecLromagnetic flowmeter can be use in the following hai:afdoLis (clas­
sified) loc;iLions.
(1) FM Approval
Gass I
j
Division 2, Groups A, C, C and D,
Class II, Division 2, Groups P and G
Class in
(2) eSA Ccrtifieation
Class I , Division 2, Groups A. B, C and D,
Class n , Division 2, Groups R, i- and G
GassU
rhe device measures the volumetric flow rates of electrically conductive materials on
the basis of Faraday's Law of electromagnetic induction.
The device consists of two units: Ue detector, through which the fluid to be measured
flows, and Ihe converter, which receives the elcciromotivc force signals from tiie
detector, then converts the signals into the 4—20 mAdc signal.
Features
Model 1F434/LF404 flowmeter has the following features:
(1) Fluid flow is not obstructed and pressure loss is negligible.
(2) Toshiba’s original noise-suppression circuit with signal processing
Ccipcibililics ensures a stable outpul.
(3) lias no moving parts and How indication is quick with high accuracy even under low
flowrate measurement conditions,
(4) No obstacles in the flow stream ami nowhere remains the fluid along the detector
pipe. Thus deterioration or corrosion of fluid does not occur,
(5) High accuracy, ±0.5% of rale is possible for 0,3-10 rrv’s velocity range. (). I to 0.3
m/s range is available optionally.
(6) 'I'he flowmeter has various How measurement outpul and control functions as
standard specifications and the optional IXD display for convenient parameter
settings.
' These funciions can he selected with control keys on the panel.
(8) Intelligent functions
* The widely used HART [protocol communications system is used as a standard
feature. HART (Highway Addressable Remote Transducer) is a commtmications
protocol for industrial sensors recommended bvHCF (HART Communication
Foundalion).
(9) An casy-to-rcad LCD display (2-iine x 16-character display) (optional)
* The backlit LCD display can be read even under poor lighting conditions.
- 1 0 -