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LZB-DK-2-M-RA-8-P high accuracy purge set [CHENGFENG FLOWMETER] stainless steel plate Chinese ...

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CHENGFENGFLOWMETERSpurgesetalsoknownasconstantcurrentdevice

詳細(xì)介紹

CHENGFENG FLOWMETER'S purge set also known as constant current device, is to use metal pipe float or glass rotameter and constant current valves, divided into single table type and plate type two kinds, the panel is divided into single, double and multiple three forms, are widely used in oil refining, chemical industry, ethylene, chemical fertilizer, steel, chemical fiber textile industry such as transmitter of purging, the differential method of level measurement process control, realize the flow measurement and ensure the constant flow output, has the characteristics of safe and reliable, precise measurement stability, stable can be used for entry or exit pressure changes, to ensure constant flow output, not affected by pressure change.

Summary

This purge sets are composed of metal tube rotameters or glass tube rotameters with constant flow
valves,which can be used for the measurement and keep flow rate of gases or liquids constantly
output.

Float flowmeter featured with safety and reliable,measuring precise and steady,so that this series
purge sets keep flow rates output constantly even when the supply or load pressure changes,which can be widely used for the transmitters cleaning among the industries of petroleum processing, chemical,ethylene,fertilizer,steel,chemical fiber and textile and so on.,also can be used among the processing control of differential pressure level measurement.

The design of this series products can be fulfill of the industrial control requirements,installation
applicable condition also can be fulfill of the requirements of instrument measuring technology.

Features

◊ single-path,two-path,multipath(optional);

◊ single meter installation,panel mounting,cabinet installation(optional);
◊ 1/4"NPT,swagelok,screw,flange connection(optional);
◊ 6mm,8mm,10mm,15mm,25mm pipeline;
◊ Switch signal output,4-20mA signal output(optional);

◊ Metal structure,simpleness,hardness,beauty;

◊ Can test processing temperature below 200°C;
◊ Can test processing pressure below 6.4MPa;
◊ Flowrate,pressure(optional)indicate on-site;
◊ Adopts to our company LZ series float flowmeter;
◊ Precision micro needle valves are optional,convenient,flexible,applicable for flowrate field adjustment.

Working Principle

Learn from the measuring structure diagram(eg:constant inlet pressure) can know that:

The force upward elastic membrance is:P2A+P1a (1)

The force upward elastic membrance is:P3A+P2a+F (2)

When the pressure is in balance,means that (1)=(2),P2A+P1a=P3A+P2a+F (3)

As the differential pressure of pressure regulator membrane P2-P3,we can get the equation as following: P2-P3=F/A-a/A(P1-P2) (4)

Because of anegligible,as F and A are constant value,so:

C(constant value)=P2-P3

When the measuring media is not compressed liquid,RE pressure regulator can be applicable for

the outlet pressure changes.Said for (4),as P1 is constant,P3 is variational,when P3 change to:P3+
ΔP,P2 change to:P2+ΔP,

so that: C(constant value)=P2-P3

Technical Parameter

Overall Size

CHENGFENG FLOWMETER for 30 years, has been in the study and progress, learning advanced foreign instrumentation equipment and technology, the introduction of advanced technology, and then based on the research and development of new technology, combined with the requirements of customers innovative products that meet customer needs, meet the requirements of customers, the pursuit of perfect quality, technical breakthroughs.

Type Selection

The development of instrument and meter industry, instrument and meter industry technical breakthroughs cannot leave the instrument manufacturer's support and effort.CHENGFENG FLOWMETER as a flow meter manufacturer, we study hard, and new technology, the introduction of advanced equipment, research and development more technology, meet the needs of more customers. Also has been gradually put into feng flowmeter products sold to foreign countries, widely popular among customers.