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CHONGQINGCHUANYIAUTOMATIONCO.,LTD.

TableofContents

I.Product Overview 01
II.Structure and Principle 01
III. Characteristics\* 02
IV. Structure Type . 03
V.Main Technical Parameters 05
VI.Table of Overall Dimensions,Weight and Pressure Loss 06
VII. Instrument Wiring 13
VIII. Installation Diagram 15
IX.Precautions for Installation and Use 17
X.Product Accessories. 18
XI.Liquid,Gas and Steam Flow Measurement Conversion… 19
XII.Flow Range under Standard Conditions· 21
XIII.RFCMetalTubeRotameterSelection Table 22
Appendix Rotameter Consultation Sheet 23

Intelligent Metal Tube Rotameter

I.ProductOverview

The intelligent metal tube rotameter is a kind of variable area flowmeter commonly used in industrial automation process control,and characterized by small volume,wide detection range and convenient use.It can be used to measure the flow of liquid,gas and steam, especially for low flow rate,small flow rate,high temperature,high pressure,strong corrosion,and conductive or non-conductive media.

This series of metal tube rotameters meet the national standard JB/T 6844-2015,and the factory verificationmeetstheverificationregulationof JJG257- 2007.This product has been inspected and approved by theexplosion-proof quality inspection organization designated by the State,and meets the relevant requirements of GB3836.1-2010，GB3836.2-2010, GB3836.4-2010 and GB3836.20-201 Its explosionproof mark is explosion-proof Exd I CT2\~T6Gb intrinsically safe Exia II CT6 Gb.

II.Structureand Principle

1.Structure

The product mainly consists of two parts: measuring tube and indicator. The measuring tube includes taper tube or orifice plate,guide,stopper, float and other components,and the indicator includes magnetic servo system,pointer,dial,circuit board (remote transmission) and other components.

2.Working principle

When the measured medium flows through the measuring tube from bottom to top，a differential pressure is generated at the upper and lower ends of the float to form a rising force.When the rising force on the float is greater than the weight of the float immersed in the fluid,the float rises,the annular space area increases,the fluid flow rate at the annular space decreases rapidly,the differential pressure between the upper and lower ends of the float decreases,and the rising force acting on the float decreases.Until the rising force is balanced with the weightof the float immersed in the fluid,the float is stabilized at a certain position, and the position of the float corresponds to the flowrate of the measured medium.

Magnetic steel is built in the float.When the float moves up and down with the medium,the magnetic field changes with the movement of the float. The follow-up magnetic steel fixed on the pointer shaft in the indicator is coupled with the magnetic steel in the float to drive the pointer and the sensing magnetic steel to rotate the pointer to indicate the local instantaneous flow on the dial,which is converted into an electrical signal by the magnetic sensor and then displayed as instantaneous flow and accumulated flow after being processed by the circuit.

III.Characteristics

1.Uniform magnetic field technology is adopted to make the float become a rotor for more stable measurement. 2.Multi-section taper tube technology is adopted to make the dial tend to be linear. 3.Double indication system can meet different Working conditions of users.

The panel is made of aluminum,and the long pointer indicates it mechanically,which makes the panel more beautiful. The low-power full-view double-line backlight LCD can display instantaneous flow, cumulative flow and corresponding units at the same time.

4.The magnetic damping system can efectively reduce the pointer jitter. 5.The geomagnetic interference compensation device isadded to effectively overcome the influence of geomagnetic field on the instrument. 6.It is suitable for micro-flow measurement of different media. 7．The structure is simple and installation is convenient.

V.MainTechnicalParameters

VI.TableofOverallDimensions,WeightandPressureLoss

a.Table of overall dimensions,weightand pressure loss of standard ^ + multifunctional indicatol

c.Table ofoverall dimensions,weightand pressure loss of jacket type ^ + multifunctional indicator

g.Table ofoverall dimensions,weight and pressure loss of sanitary type ^ { + } \mathfrak { e } 1 2 5 stainless steel shell indicator

h.Tableofoveralldimensions,weightandpressureloss ofsanitarytype { \bf + 100 }$ stainlesssteelshellindicator

I.Tableofoveralldimensions,weightand pressure loss ofbottominand top lateralout/jacket type ^ + multifunctionalindicator

j.Table of overalldimensions,weightand pressure loss ofbottomlateralinand top lateral out/jackettype ^ + multifunctionalindicator

k.Table of oyerall dimensions,weightand pressure loss ofleft inand rightout/rightinand left out ^ + multifunctionalindicator

l.Tableofoveralldimensions,weightand pressure loss ofhorizontal spring ^ + multifunctionalindicator

m.Tableofoverall dimensions,weightand pressure lossofhorizontalspring ^ + square indicator

n.Tableofoveralldimensions,weightand pressureloss oftopinandbottomout ^ + multifunctionalindicator

VII.InstrumentWiring

1.Two-wire system (4\~20)mAoutput connection methods (including intrinsically safe type,Hart type and FF field bus type):

Hart475 and FLUKE744 handsets are supported

When the intrinsically safe explosion-proof indicator is selected,a corresponding safety barrier shall be provided,and the explosion-proof sign of the safety barrier is Exia llC,and its parameters meet the following requirements:

Ui≤28V Ii≤100mA Ci≤021F Li≈0mH Pi≤7W

2.Multi-wire system (24VDC,220VAC power supply,ModBu,alarmand pulse output,batch processing mode) connection method:

M5.M6 wiring terminal diagram

Wiring terminal diagram

Note:Pulse output,batch output and alarm output terminals are multiplex terminals,and the corrsponding output modes need to be setbysoftware.The three outputsare selected asactive output or passive output bythe corresponding dial switch,and thedialswitchisONfortheactiveoutput,which isinternallypoweredbytheflowmeter.The nternal power supply is mA@24VDC,which canbe externally connected with an electronic counter.The dial switch of PLC or DCSis OFFforthe passive output,which requires an external power supplyof 5\~36VDC,andthe maximum power supply is 2 5 0 { m A } @ 3 6 { V D C } .When the inductive load is used,a freewheeling diode should be added as shown in the figure.

+24V R2.5K
。 ON ON DP Dial switch 31(32、34)+ Load ￥ OFF UL Dial switch (5\~36)VDC ON:Internal power supply 24VDC OFF:5\~36VDC external power supply is required; dial switch No.1 corresponds to
Inside flowmeter 35- pulse output terminal, No.2 corresponds to lower limitalarm terminal andNo.3 corresponds to upper limit alarm terminal. Pulse,batch and alarm passive
output wiring (dial switch is OFF)

Pulse,batchandalarmactive output wiring (dial switch is ON)

3.Reed switch switchingvalue alarm connection method:

Reed switch has three contact forms:NO (default),NCand NONC.When ordering,it is necessary to explain which switch formis needed.

Reed switch contact capacity 1A @ 30VDC

VIII.InstallationDiagram

Where:

5 { x } { D N } is the length of the front straight pipe section 250 is the length of the rear straight pipe section A is the reserved space for magnetic filter installation Below DN100, \scriptstyle \mathbf { A } = 1 0 0 {mm } （204号
Above DN100, { A } { = } 1 5 0 {mm } （204号
Clamping type, _ { { A } = 5 0 {mm } } （20

Notes:

1.If the front and rear pipe sections meet the installation requirements,straight pipe sections are not required 2.If there is no ferromagnetic substance in the medium, the magnetic filter is not required

Bottom in and top lateral out installation diagram

IX.Precautions forInstallation and Use

1.General requirements

(1) The instrument is precision equipment, so in the process of transportation,installation,storage and use, we must handle them with care,and barbaric transportation，overstress installation and misplacing everywhere are prohibited.The relative position of the indicator and the sensor cannot be changed. Once the relative position changes,it will directly affect the measurement accuracy of the instrument.

(2）Before instrument installation，the process pipeline shall be purged to prevent the ferromagnetic substances retained in the pipeline from adhering to the instrument,affecting the performance of the instrument and even damaging the instrument.If ferromagnetic substance is inevitable,a magnetic filter shall be installed at the instrument inlet.The instrument shall be exempted from air purging before production to avoid damage.

(3)Before the instrument is installed in the process pipeline,the filler (toprevent the float from moving during transportation) in the measuring pipe shall be taken out,and it is required to check whether the instrument is damaged during transportation.

(4)The installation form of the instrument is divided into vertical installation and horizontal installation.In the case of vertical installation,the included angle between the central vertical line of the instrument and the plumb line shall be less than 2 ^ { \circ } ；in the case of horizontal installation,the included angle between the horizontal center line of the instrument and the horizontal line shall be less than 2 ^ { \circ }

(5) The upstream and downstream pipelines of the instrument shall have the same nominal diameter as the instrument,and the connecting flange or thread shall match the flange and thread of the instrument. The length of the upstream straight pipe section of the instrument shall be 5 times of the nominal diameter of the instrument,and the length of the downstream straight pipe section shall be 2 5 0 {mm } or more.

(6)The instrument transmits signals through magnetic coupling,so in order to ensure the accuracy of theinstrument, ferromagnetic substances are notallowed within a radius of at least 1Ocm around the installation, and the distance should be ensured to be greater than or equal to 300mm when densely installed side by side.

(7) The instrument for measuring gas is calibrated with air at 1MPa and 2 0 ^ { \circ } { C } .If the gas is directly discharged to the atmosphere at the instrument outlet,a pressure drop will be generated at the float,which will make the pointer of the instrument jitter.If this is the case,a valve shall be installed at the instrument outlet, and the valve opening should be turned down during operation.

(8)Instruments installed in pipelines shall not be subjected to stress,and the instrument inlet and outlet shall be supported by suitable pipelines to keep the instruments at the minimum stress.

(9) The PTFE-lined instruments shall be installed with special care.PTFE will be deformed under pressure,so it is necessary to install another PTFE gasket to avoid flanging and fracturing the lining.

(10)In the process oflong-term use,ferromagnetic substances are inevitably adsorbed on the float in the pipeline.If there are too many impurities,the float will be stuck or the measurement accuracy will be affected, so the measuring tube of the instrument should be cleaned regularly.If a magnetic filteris installed at the instrument inlet, it should also be cleaned regularly.

(11）The indicator of the instrument is equipped with electronic devices,so when the instrument is disassembled or used,the screw or cover should be tightened to keep the shell sealed,and the liquid and ferromagnetic substances must be prevented from entering,and the instrument shell should be reliably grounded.

(12)When the instrument is used for the first time, the following two points shall be paid attention to:

Liquid measurement: In the process of opening the valve,in order to avoid sudden opening of the valve, head impact and damage to the instrument,it is necessaryto open the valve slowly.

Gas measurement:Do not pressurize the pipeline before opening the valve.Otherwise,if the valve is suddenly opened,the float will rush to the stopper and may damage the instrument,so be sure to open the valve slowly.The instrument for measuring gas can be equipped with a pneumatic damping device to minimize

the oscillation of the float.

(13)For the intelligent indicator,it is required to first ensure that the electrical wiring is correct,and then it can be powered on. Otherwise,it is easy to damage the instrument.For the key operation,the instructions for use must be observed,and it is prohibited to operate blindly.Otherwise,the data stored in EEPROM in the instrument will be lost or damaged.

(14) The instrument shall be stored at - 4 0 ^ { \circ } { C } { ~ } 5 5 ^ { \circ } { C } where the relative humidity is not more than 90 % and there is no rain, snow, sun exposure and corrosive gas.

(15)When cleaning,it is required to avoid washing the instrument shell with water to prevent water from entering the instrument shell and damaging the instrument.

(16) Due to the pressure loss of the flowmeter, the medium pressure at the installation position of the instrument must be greater than the pressure loss of the flowmeter.

(17) Instruments with LCD screen shall be installed in such way that direct sunlight on the screen can be avoided as much as possible;otherwise,the service life of the LCD may be shortened.

(18)When measuring low-temperature medium, if thermal insulation jacket or vacuum jacket is not ordered,thermal insulation treatment is needed on site.

(19)Before wiring the instrument,it is required to determine the power supply and output mode of the instrument,and determine the terminal numbers of the power supply and signal on the circuit board to avoid damage to the instrument caused by wrong connection.

(20)The user must follow the requirements of this manual to ensure the correct and safe use of the instrument.

2.Companion flanges,fasteners and gaskets

Companion flanges,fasteners and gaskets can be provided according to the selected flowmeter flange standards (GB,HG,JB,ANSI,DIN,JIS).

3.Magnetic filter

When the medium contains ferromagnetic impurities or the flowmeter is installed and used for the first time,it is recommended to choose the magnetic filter.Magnetic filter can be made of stainless steel and lined with PTFE.Flange connection,clamping type and integratedtype can be selected accordingto connection method. Special structure can be customized according to user's requirements.

TypeC-flange connectionwithatotal length of 1 0 0 {mm } (>DN100 with a total length of 1 5 0 {mm } 0

Type S-clamping connection with a total length of 50mm (≤DN100)

X.ProductAccessories

1. Straight pipe section

Users can choose the straight pipe section with the first 5ON(the nominal diameter of the pipeline) and the straight pipe section with the last 2 5 0 {mm } to be installed with the flowmeter to ensure the measuring accuracy of the instrument.

4.Battery

BAT-9AH ATT5-B battery can be provided when the battery flowmeter has insufficient power.

5.ModBu and Hart protocol modem and upper computer software

ModBu and Hart protocol modem and upper computer software can communicate and be debugged with field instruments through computers.

XI.Liquid, Gas and SteamFlow Measurement Conversion

1.Calculation method

(1）According to the data given by the user, select an appropriate formula to calculate the flow Qs of the corresponding calibration medium:

\scriptstyle { \mathsf { Q } } _ { { S } } = { K } x \mathsf { Q }

Where:Qs- The flow rate of calibration medium (water orair) in standard state( 2 0 ^ { \circ } { C } ,1013MPa)

Q-User media flowK-Correction coefficient

(2)According to the calculated Qs value,check the flowmeter to determine the selected float number and the diameter of the measuring tube.The values in the flow meter are all the flow values of water or air in the standard state

(3) The viscosity correction is not considered in the calculation,so it may be different from the results calculated by the factory.Please understand it.

2.Determination ofcorrection coefficientK

A.For liquid medium

a.If Q given by the user is the volume flow of liquid,calculate K with the following formula:

b.If Q given by the user is the mass flow of liquid, calculateKwith the following formula:

Where:ps:Density of selected float ( { g } / {cm } ^ { 3 } ) （204号

The density of stainless steel float is 7.8

The density of PTFE is 3.4

The density of nickel-based alloy (Hatelloy) is 8.3

p:Density of measured medium

B.For gas medium

a.If Q given by the user is the volume flow of gas in the standard state ( 2 0 ^ { \circ } { C } ,1013MPa),calculateK with the following formula:

b.If Q given by the user is the volume flow of gas in the operating state,calculate K with the following formula:

c.If Q given by the user is the mass flow of gas, calculate Kwith the following formula:

In the above formulas:

ρ:Density of the gas medium to be measured at 2 0 ^ { \circ } { C } and 0.1013MPa { (kg / m ^ { 3 } ) } P:Absolute pressure of the gas medium to be measured (Mpa) T:Absolute temperature of the gas medium to be measured (K) （20 \rho _ { { 0 } } ：Density of air at 2 0 ^ { \circ } { C } and 0.1013MPa （20 ( 1 . 2 0 5 {kg / m } ^ { 3 } ) （204号 { ~ P ~ } _ { 0 } ：Absolute pressure of calibration medium (0.1013MPa) { ~ T _ { 0 } ~ } ：Absolute temperature of calibration medium (293.15K)

d.Auxiliary density conversion formula

Where:

p:Density of gas medium to be measured in the standard state ( {kg / m } ^ { 3 } . ） p:Density of the gas medium to be measured in the operating state ( {kg / m } ^ { 3 } ) 1 T:Absolute temperature of the gas medium to be measured in the operating state (K) { ~ \mathsf ~ { ~ P ~ } ~ } _ { { { t } } } ：Absolute pressure of the gas medium to be measured in the operating state (Mpa) { ~ P ~ } _ { 0 } ：Absolute pressure of the gas medium to be measured in the standard state (Mpa) { ~ T _ { 0 } ~ } ：Absolute temperature of the gas medium to be measured in the standard state (K)

C.For steam measurement

When the flowmeter measures saturated steam,it can be converted and selected according to the following formula:

Where:Qs: Corresponding water flow p: Density of steam in operating state ( {kg / m } ^ { 3 } ) 0 M:Flow rate of steam ( {kg / h } )

According to the steam density and mass flow in the working state,the user can convert according to the above formula,and select the instrument according to the specifications of water flow.

This formula is derived from the density of the float material { = } 7 9 0 0 {kg / m } ^ { 3 } .If the density of the float changes, the coefficient in the formula will also change.

XII.Flow Range under Standard Conditions

The instrumenfnlepressurshouldbe greatethanl.5timesof pressurdos:

XIII.RFCMetalTubeRotameterSelectionTable Sensor Converter RFC XXX Mainname Diameter scope ofapplication:DN15\~100 Three digits:The first and second digits of dnand the number of zeros following the first two digits(unit:mm). Standard pressure(flange) 1:1.6MPa 2:4.0MPa 4:2.5MPa 5:1.0MPa 6:0.6MPa 7:2.0MPa(ANSI150) 8:5.0MPa(ANSI300) S:Special Structurematerial The sequence ofmaterial combination is:measuring tube-lining. 0:Stainless steel-N/A_1:304-N/A 2:316L-N/A 3:Stainless steel-PTFE(vertical installation only) 4:304-PTFE(vertical installation only) 5:316L-PTFE(verticalinstallationonly) S:Special material(to be specified) Measuringmedium 1:Liquid 2:Gas 3:Steam Operating environment 1:General ambient temperature-20\~60℃， standard type(medium temperature≤100℃) 2:General ambienttemperature-20\~60℃， high-temperaturetype(mediumtemperaturel00℃\~450℃) 3:Generalambienttemperature-40\~120℃ standard type(mediumtemperature≤100℃) 4:General ambienttemperature-40\~120℃ high-temperaturetype(mediumtemperaturel00℃\~450℃) 5:Hazardousambienttemperature-20\~60℃， standardtype(mediumtemperature≤100℃) 6:Hazardousambienttemperature-20\~60℃, high-temperature type(medium temperature100℃\~450℃) Optional structure O:Standard type:Flange connection 1:Jacket type:Flange connection 2:Damping type:Flangeconnection 3:Clampconnection(sanitary type). 4:Standardtype:Threaded connection_5:Dampingtype:Threaded connection 6:Standard type:Flangeconneetionwith inlet needle valve 7:Damping type:Flange connection with inlet needle valve 8:Spccial Calibration D:level 1.5 S:Special amendment Installationmethod V:Vertical installation(bottom in and top out)H:Horizontal installtion(left inand right out) R:Horizontalinstallation(right inandleftout) C:Side-to-side installation D:Bottom-to-side installation S:Special Flowrangeunderstandardconditions Fortheselcctioncode,seeTable 2“FlowRange under StandardConditions"inAppendix Please mark"S"for special flow and indicateitin theremarks Outgoing line seal 1:M20×1. 5 3:NPT1/2 Type RH Integrated type Powersupply 0:No power supply2:24V 3:220V AC 4:3.6VLithium battery Display 1:Pointer indication 3: Pointer indication+LCD(not applicable without power supply) Output interface 0:N/A1:4-20mA output2:4-20mA+HART protocol3:RS4854:Profibus PA 5:FF Operating environment 1:General environment5:Dangerousplaces(explosion-proof type) 7:Hazardous places-intrinsically safe type(not applicable without power supply) Displaydirection(clockwise) 1:Standard direction Language 1: English Tab 1: Provided by manufacturer

AppendixRotameterConsultationSheet

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