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Turbine flow meter Selection of connection cables​

Jun 28, 2017

Turbine flow meter Selection of connection cables

 turbine flowmeter7.jpg

(1) For connection between Type LWF-P( Ⅰ ) preamplifier, Type LWF-11A (C ) explosion-suppression type preamplifier and the display instruments, three-wire stranded copper wires with external braid shield and covered with plastic or oil-resistant rubber will be applied, and the effective cross-section area is within the range 1.25~2mm2; for output of type LWGY/TBT-Ⅰ converter display, in a place apt to interference of electrical noises, shield cable shall be applied.


(2) In atmospheres where oils or solvents,corrosive gases or liquids use suitable wires or cable.


8.4 Caution matters for wiring


(1) Make every effort to use a complete piece of cable line


(2) The wiring position shall be as far as possible away from electrical noise sources (such as big power transformers, motors and strong power lines) and shall avoid wiring in parallel with power supply lines.


(3) It is recommended that at the end of a thick leadwire, non soldering clamping type that crimp-on type solderless lugs will be applied .


(4) To prevent water and mechanical damages, it is best to put cable wires into metal guide tubes, but in the same guide tube, cables for high power transmission purpose are not allowed, (when the maximum power delivered by one transmission cable is bigger than 10 times the minimum power transmitted by the flow meter signal cable, the two cables can not be installed in the same guide tube.)


(5) For areas with very strong outside magnetic field, the axial line of the detection device shall be made perpendicular to the magnetic flux direction of the outside magnetic field, or material of high magnetic conductivity will be applied to shied the flow meter or the outside magnetic sources.


(6) For connection of explosion proof type turbine flow meter cables, the standards for explosion proof amplifier concerned shall be abided by strictly.