CHONGQINGCHUANYIAUTOMATIONCO.,LTD.

Table of Contents

I.Product Overview.. 01
I1. 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.PrecautionsforInstallation andUse. ·17
X.Product Accessories.. 18
XI. Liquid,Gas and Steam Flow Measurement Conversion 19
XII. Flow Range under Standard Conditions · 21
XIlI.RFCMetalTubeRotameterSelectionTable.. 22
AppendixRotameter ConsultationSheet.. 23

Intelligent Metal Tube Rotameter

1. Product Overview

The intelligent metal tube rotameter is a kind of variableareaflowmeter commonlyusedinindustrial 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 verificationmeetstheverificationregulationofJJG257- 2007.This product has been inspected and approved by the explosion-proof qualityinspection organization designated by the State,and meets the relevant requirements of GB3836.1-2010，GB3836.2-2010, GB3836.4-2010andGB3836.20-201 Its explosionproof mark is explosion-proof Exd ⅡI CT2\~T6Gb intrinsically safe Exia II CT6 Gb.

II.Structure and 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 forceis balancedwith the weight of the float immersed in the fluid, the float is stabilized at a certain position, and thepositionofthefloatcorrespondstotheflowrate 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 steelfixed 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,whichis convertedintoanelectricalsignalby the magneticsensorandthendisplayedasinstantaneous flow and accumulated flow after being processed by the circuit.

IH1.Characteristics

1. Uniform magneticfield technology is adopted to makethefloatbecomearotorformorestable 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 effectively reduce the pointer jitter. 5. The geomagnetic interference compensation deviceis added toeffectivelyovercometheinfluenceof 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.Main TechnicalParameters

VI. Table of Overall Dimensions, Weight and Pressure Loss

a.Table of overall dimensions,weight and pressure loss of standard ^+ multifunctionalindicator

c.Table of overall dimensions,weight and pressure loss ofjacket type ^+ multifunctionalindicator

g.Table of overall dimensions,weight and pressure loss of sanitary type ^{+}\mathfrak{e}125 stainlesssteelshellindicator

h.Tableofoverall dimensions,weightandpressureloss ofsanitary type {\bf+100}$ stainlesssteelshellindicator

I.Tableofoveralldimensions,weight and pressureloss of bottom in and toplateralout/jacket type ^+ multifunctionalindicator

j.Tableofoveralldimensions,weightandpressureloss of bottomlateralinand toplateral out/jackettype ^+ multifunctionalindicator

k.Tableofoveralldimensions,weightandressureossofleftnandrightout/rightinandlft out ^+ multifunctionalindicator

1.Table of overall dimensions,weight and pressureloss of horizontalspring ^+ multifunctionalindicator

m.Table of overall dimensions, weight and pressure loss ofhorizontalspring ^+ squareindicator

n.Table ofoveralldimensions,weightandpressureloss oftopinandbottomout ^+ multifunctionalindicator

VII. Instrument Wiring

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

Hart475 and FLUKE744 handsets are supported

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

Ui≤28V Ii≤100mA Ci≤021F Li=OmH Pi≤7W

2. Multi-wire system (24VDC,220VAC power supply, Modu, alarm and pulse output,batch processing mode) connectionmethod:

M5.M6 wiring terminal diagram

Wiring terminal diagram

Note: Pulse output, batchoutput and alarm output terminals are multiplex teminals, and the corresponding output modes ned tbeetbysoftwareThe threoutputsareselectdas activeoutput orpassiveutput by thecorrepoding dial swith, and thedial swith is ONfor the active ouput, which is intallypowered by the flowmeterThe iteal power supply is 8mA@24VDC, which can be externally connected with an electronic counter The dial switch of PLC or DCSiis OFF for the passive output, which requires an external power supplyof5\~36VDC, and the maximum power supply is 250mA@36VDC .When the inductive load is used, a freewheeling diode should be added as shown in the figure.

output wiring (dial switch is OFF)

Pulse,batch and alarm active output wiring (dial switch is ON)

3.Reedswitchswitchingvaluealarmconnectionmethod:

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

Reed switch contact capacity 1A @ 30VDC

VIIl.InstallationDiagram

Where:

5{x}DN is thelength ofthefront 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}=100mm
Above DN100, A{=}150mm
Clamping type, _{A=50mm}

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

Bottomin and toplateraloutinstallation 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 theinstrument.

(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 attheinstrument inlet.Theinstrument shall be exempted from air purging before production to avoid damage.

(3)Before the instrument is installed in the process pipeline, the filler (to prevent 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 dividedintoverticalinstallationandhorizontal installation.Inthe case of verticalinstallation,the included anglebetween thecentralvertical lineof the instrument and the plumb line shall be less than 2° in the case of horizontal installation, the included angle between thehorizontalcenterlineoftheinstrumentand the horizontal line shall be less than 2° ，

(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 instrumentshallbe5timesof thenominaldiameter of the instrument, and the length of the downstream straight pipe section shall be 250mm or more.

(6）The instrument transmits signals through magnetic coupling, so in order to ensure the accuracy of theinstrument,ferromagneticsubstances arenot allowed within a radius of at least 10cm around the installation.

and the distance should be ensured to be greater than or equal to300mm when densely installed side by side.

(7） The instrument for measuring gas is calibrated with air at 1MPa and 20°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 theminimum 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 of long-term use,ferromagnetic substances are inevitably adsorbed on the float in the pipeline. If there are too many impurities, the float will bestuck or themeasurement accuracywill be affected, sothemeasuringtubeof theinstrumentshouldbe cleaned regularly. If a magnetic filter is 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 openthevalve 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 maydamage theinstrument,sobe sure to open thevalve slowly. The instrument for measuring gas can be equipped with a pneumatic damping device to minimize

theoscillationofthefloat.

(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 -40°C~55°C 新 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 aspossible;otherwise,the servicelife of the LCD may be shortened.

(18) When measuring low-temperature medium, if thermalinsulationjacket or vacuumjacket 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)Theusermustfollow therequirements ofthis manualtoensurethecorrectandsafeuseofthe 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 themedium 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 integratedtypecanbeselectedaccordingtoconnection method. Special structure can be customized according to user's requirements.

Type C-flange connectionwith atotallength of 100mm (>DN100 with a total length of 150mm 一

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 50N (the nominal diameter of the pipeline) and the straight pipe sectionwiththelast 250mm 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 Steam Flow Measurement Conversion

1.Calculationmethod

(1） According to the data given by the user, select an appropriateformulato calculatetheflowQsof the corresponding calibration medium:

\scriptstyle{\mathsf{Q}}_{S}=Kx\mathsf{Q}

Where:Qs-Theflow rate of calibration medium (water or air) in standard state ( 20°C ,1013MPa)

Q-UsermediaflowK-Correction coefficient

(2)According to the calculated Qs value,check the flowmeter todetermine theselectedfloatnumber and the diameter of the measuring tube.Thevalues 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 thefactory.Please understand it.

2.DeterminationofcorrectioncoefficientK

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, calculate K with the following formula:

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

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 ( 20°C ,1013MPa),calculate K 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 K with the following formula:

In the above formulas:

p:Density of the gas medium to be measured at 20°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) \uprho_{0} :Density of air at 20°C and 0.1013MPa (1.205kg/m^{3}) ~P~_{0} ：Absolute pressure of calibration medium (0.1013MPa) ~T_{0~} ：Absolutetemperatureofcalibrationmedium (293.15K)

d.Auxiliary density conversion formula

Where:

p: Density of gas medium to be measured in the standard state (kg/m^{3}. 0 p: Density of the gas medium to be measured in the operating state (kg/m^{3}) 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 temperatureof thegas medium tobe 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}) 1 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 {=}7900kg/m^{3} .If the density of the float changes, the coefficient in the formula will also change.

XII.Flow Range under Standard Conditions

The instrumenfnlepressurghouldbe greatethanl.5timesofpressurdoss

Appendix Rotameter Consultation Sheet

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QRcodeof Chuanyi Flowmeter