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Chapter 4 Flow measurement

- 28 -

4.1.2. Steady Flow

The steady flow of the fluid contributes to the stability of the measurement, thus
ensuring the accuracy of the measurement.And the flow state is chaotic flow
To make the measured data unstable or unmeasurable.

To meet the standard requirements of steady flow conditions:

1. When the pipeline is far away from the pump outlet and the valve is partially
opened, the straight pipe section shall be 10D upstream and 5D downstream (D is
the outer pipe diameter).
2. 30D from the pump outlet and the straight pipe section of the semi-open valve.

Full pipe

Possible dissatisfaction
with management

A vertical upward flow pipe

A verticall downward flow pipe

An upward sloping pipe

An downward sloping pie

The lowest point in a piping system

The highest point in a piping system
Natural flow
No pressure in the pipe

Содержание MC-SUP2000H

Страница 1: ...Medidor de flujo ultrasónico en líquidos portátil Meacon MC SUP2000H ...

Страница 2: ...ter 2 Operation 14 2 1 Power On 14 2 2 Charging and capacity 14 2 3 Display 15 2 4 Keypad 15 Chapter 3 Menu Windows Arrangement 16 3 1 Menu window general 17 Chapter 4 Flow measurement 27 4 1 Select installation point 27 4 1 1 Full pipe 27 4 1 2 Steady Flow 28 4 1 3 Scaling 30 4 1 4 Temperature 31 4 1 5 Interfere 31 4 2 Steps to Configure the Parameters 32 4 3 Transducers Installation 33 4 3 1 Tra...

Страница 3: ...How to use the totalizer multiplier 47 6 6 How to open or shut the totalizers 47 6 7 How to reset the totalizers 47 6 8 How to restore the flow meter with default setups 47 6 9 How to use the damper 47 6 10 How to use the zero cutoff function 47 6 11 How to setup a zero point 48 6 12 How to get a scale factor for calibration 48 6 13 How to use the operation locker 48 6 14 How to use the built in d...

Страница 4: ...r minor details 51 6 27 How to know how long the battery will last 52 6 28 How to charge the built in battery 52 Chapter 7 Troubleshooting 53 7 1 Power on Error Displays and Counter Measures 53 7 2 Error Code and Counter Measures 54 7 3 Causes of abnormal measured values and treatment methods 56 7 4 Other Problems and Solutions 60 Chapter 8 Appendix 61 ...

Страница 5: ......

Страница 6: ...lains the characteristics configuration measurement methods how to use failure causes and maintenance of portable handheld ultrasonic flow meters To ensure correct use please read this manual carefully before use In addition please keep this manual in a place where the user can refer to it at any time 1 2 Goods confirmation 1 2 1 monitor ...

Страница 7: ... 90 High temp small size TS 2 HT DN32 100 30 160 High temp medium size TM 1 HT DN50 700 30 160 High temp large size TL 1 HT DN300 6000 30 160 Bracket type small size HS DN32 100 30 90 Bracket type medium size HM DN50 300 30 90 High temp bracket small size HS HT DN32 100 30 160 High temp bracket medium size HM HT DN50 300 30 160 Extension bracket EB 1 DN300 700 ...

Страница 8: ... extended protocol simple water meter protocol compatible with other manufacturers protocols Output 1channel OCT output Data record Built in 32Mbit memory Power Supply Adapter Power 6W Input AC90 260V Output DC6V Battery Type Ni MH Unit 3 sections 1 2V Capacity 2000 mAh Charging time 8h Working time more than 12h Use power adapter charging can achieve uninterrupted measurement Feature Intelligent ...

Страница 9: ...be mounted in V method where the sound transverses the pipe twice or W method where the sound transverses the pipe four times or in Z method where the transducers are mounted on opposite sides of the pipe and the sound crosses the pipe once This selection of the mounting method depends on pipe and liquid characteristics The flow meter operates by alternately transmitting and receiving a frequency ...

Страница 10: ...ves Portable handheld ultrasonic flowmeter adopts non contact measurement method with large measurement range no moving mechanical parts and is not affected by system pressure and harsh environment It has been widely applied to water pure water sea water sewage chemical liquids rivers In the measurement of water fuel oil and other fluids The upper limit temperature of the standard sensor is 110ºC ...

Страница 11: ...Chapter 1 Introduction 6 1 6 Parts Identification 1 6 1 Converter Front view Side view ...

Страница 12: ...t signal 1 5 Power terminal 2 3 RS232 communication interface 4 5 OCT pulse signal output interface 6 7 Inlet pipe temperature resistance interface 8 9 Outlet pipe temperature resistance interface 1 6 2 Sensor Small size Medium size ...

Страница 13: ...gh temperature clamped sensor is made of special custom made high temperature resistant materials The fluid temperature range can be measured from 30 to 160 Different types of sensors can be selected according to different pipe diameters See page 7 for sensor options in the host menu ...

Страница 14: ...2 HT Same size as standard small sensor TS 2 High temperature outside the clip on medium sized sensors 1 HT TM The same size as standard medium sensor TM 1 Outside clip on large high temperature sensor TL 1 HT The same size as standard medium sensor TM 1 1 6 3 Bracket transducers ...

Страница 15: ...onic flowmeter and bracket probe 7 Incense Available in metric and imperial systems used to indicate probe mounting distance 8 Strong Magnet Used to fix the bracket probe to steel or cast iron pipe 9 Saddle made of aluminum used for fixing bracket probe suitable for magic belt fixing steel belt fixing tension belt fixing 10 Fluid flow direction indicator used to indicate the mounting direction of ...

Страница 16: ...Chapter 1 Introduction 11 View and size Small size HS Medium size HM ...

Страница 17: ...Chapter 1 Introduction 12 High temp Small size HS HT ...

Страница 18: ...Chapter 1 Introduction 13 High temp Medium size HM HT Extension bracket ...

Страница 19: ...r which is convenient for users to use 2 Battery indicator light status description Indicator light status Status description Estimated remaining working hours hours Handheld type Green indicator light on Battery capacity 30 4 Yellow indicator light on 10 Battery capacity 30 1 4 Red indicator light on Battery capacity 10 1 Red indicator light on The battery status is abnormal during charging pleas...

Страница 20: ... the MEMU key and enter two numeric keys to enter a window quickly r you can use the up or down keys to enter the window above or below the adjacent 2 4 Keypad The keypad for the operation of the flow meter has 16 2 keys as shown by the right picture The and Keys are used to enter numbers or menu numbers The key is used to backspace or delete the left character and are used to enter the previous m...

Страница 21: ...ent window is 66 and type to enter the window 65 and then type enter window 64 When I type this I go back to window 65 Then I type this again again to window 66 Under normal circumstances if you want to modify the operation you must first type key you can omit the number type window if you can t enter the modified state after typing key the instrument has been added with password protection The us...

Страница 22: ...ature input T1 T2 19 Enter the absolute roughness of the inner wall 7 Display analog input AI3 AI4 20 Select fluid type 8 Display system error code 21 Enter fluid sound velocity 9 Display today s net cumulative flow 22 Enter fluid viscosity 10 Input pipe outer circumference 23 Select sensor type 11 Input pipe outer diameter 24 Select the sensor installation method handheld select the sensor freque...

Страница 23: ... signal frequency range 39 Operation interface language selection 68 Set frequency signal output lower limit flow 3 Set local LCD display mode 69 Set frequency signal output upper limit flow Choose settings 40 Enter the damping coefficient 70 Display backlight control 41 Enter low flow cutoff value 71 Display contrast control 42 Set static zero point 72 Working timer can be cleared 43 Clear the ze...

Страница 24: ...e heat meter 0 Circuit hardware parameter adjustment entrance Diagnosis 90 Display signal strength and signal quality 1 4 20 mA current loop calibration 91 Display signal transmission time ratio 2 AI3 analog input 4 mA input calibration 92 Display calculated fluid sound velocity 3 AI3 analog input 20 mA input calibration 93 Display total transmission time time difference 4 AI4 analog input 4 mA in...

Страница 25: ...otalizer flow rate velocity signal strength signal quality and working status M02 Display NEG totalizer flow rate velocity signal strength signal quality and working status M03 Display NET totalizer flow rate velocity signal strength signal quality and working status M04 Display date and time flow rate signal strength signal quality and working status M05 Display date and time velocity signal stre...

Страница 26: ...de wall of the pipe M20 Window for selecting fluid type For standard liquids that the user need not know the liquid speed include 0 Water 1 Sea Water 2 Kerosene 3 Gasoline 4 Fuel oil 5 Crude Oil 6 Propane at 45C 7 Butane at 0C 8 Other liquids 9 Diesel Oil 10 Caster Oil 11 Peanut Oil 12 90 Gasoline 13 93 Gasoline 14 Alcohol 15 Hot water at 125C M21 Window for entering the fluid sonic velocity only ...

Страница 27: ...The multiplier ranges from 0 001 to 10000 M34 Turn on or turn off the NET totalizer M35 Turn on or turn off the POS totalizer M36 Turn on or turn off the NEG totalizer M37 Totalizer reset Restore the instrument to the default parameters as the manufacturer did by pressing the dot key followed by the backspace key Take care or make note on the parameters before doing the restoration M38 Press a key...

Страница 28: ...width setting 6 1000 M55 Current loop output mode selection M56 The corresponding value for 4mA or 0mA output of the current loop M57 Current loop 20mA output corresponding value M58 Current loop output check M59 Current output value of current loop M60 Set date and time M61 Display Version information and Electronic Serial Number ESN that are unique for each Ultrasonic flow meter The users can em...

Страница 29: ... buzzer will beep when the trigger event occurs M78 OCT Open Collect Transistor Output setup By selecting a proper input source the OCT hardware will close when the trigger event occurs M79 Set relay output options M80 Select the quantitative batch controller to control the signal M81 Select a quantitative batch controller M82 Date totalizer M83 Automatic supplementary power off flow switch M84 No...

Страница 30: ...1 Displays the total working time of the instrument M 2 Displays the last power off date and time M 3 Displays the last power off flow rate M 4 Displays the times of instrument powered on the instrument has been powered on M 5 A scientific calculator for the convenience of field working All the values are in single accuracy The drawback is that the user can t operate it by direct key pressing M 6 ...

Страница 31: ...e supplier or download from the manufacturer s website M 4 AI4 analog input 4 mA input calibration M 5 AI4 analog input 20 mA input calibration M 6 AI5 analog input 4 mA input calibration M 7 AI5 analog input 20 mA input calibration M 8 PT100 zero setting at low temperature 40 M 9 PT100 at high temperature 55 zero setting M A PT100 standard calibration at 50 M B PT100 standard calibration at 84 5 ...

Страница 32: ...ey to the correct measurement The following factors must be considered in the selection of installation points Full pipe steady flow scaling temperature and interference are described below 4 1 1 Full pipe To ensure measurement accuracy and stability the fluid at the measurement point must be filled with the pipe otherwise the measurement value will be too large or Can t be measured Therefore the ...

Страница 33: ...n the pipeline is far away from the pump outlet and the valve is partially opened the straight pipe section shall be 10D upstream and 5D downstream D is the outer pipe diameter 2 30D from the pump outlet and the straight pipe section of the semi open valve Full pipe Possible dissatisfaction with management A vertical upward flow pipe A verticall downward flow pipe An upward sloping pipe An downwar...

Страница 34: ...r the following conditions so it is necessary to be careful when selecting measurement points 1 The distance from the measuring point to the outlet of the pump and the straight pipe section of the half open valve cannot be guaranteed to be 10D and there is no elbow and other buffer device 2 The distance between the measuring point and the outlet of the pump and the straight pipe section of the sem...

Страница 35: ...iameter Therefore the scaling of the inner wall of the pipe will make the flow meter can not be measured normally or affect the measurement accuracy Therefore it is necessary to avoid choosing the place of scaling on the inner wall of the pipeline as the installation point If the scaling installation point cannot be avoided the following measures can be taken to ...

Страница 36: ...d at the installation point must be within the range of the installation and use of the sensor and try to choose the installation point with lower temperature Therefore the same pipeline as far as possible to avoid the boiler water outlet heat exchanger outlet place as far as possible installed on the backwater pipeline conditions allow it is best to measure the temperature of the installation poi...

Страница 37: ...ss key 3 Press key to enter Ml4 window and press key to enter the option selection mode Use keys and to scroll up and down to the intended pipematerial and then press key 4 Press key to enter Ml6 window press key to enter the option selection mode usc keys and to scroll up and down to the liner material and then press key Select No Liner if there is no liner 5 Press key to enter M20 window press k...

Страница 38: ...distance of inner spacing between the two transducers The actual transducers spacing should be as close as possible to the spacing value V method Installation V method installation is the moswidely used mode for daily measurement with pipe inner diameters ranging from 20 millimeter to 300 millimeter It is also called reflective mode or method Z method Installation Z method is commonly used when th...

Страница 39: ...a 4 3 1 2 Handling installation point There are two installation points of the external clamp sensor which are the upstream sensor and the downstream sensor In dealing with these two Ann When decorating the treatment area of one installation point is about the same size as the sensor and the treatment area of another installation point is about the same size It should be about twice the size of th...

Страница 40: ...m loss and then put the sensor to stick on the wall pay attention to the shooting direction to correct sensors sensor and tube wall between air and sand Based on the center point the maximum value of signal strength and Q is found by moving the sensor slightly horizontally and then the maximum value of signal strength and Q is found by moving the sensor slightly vertically Then slightly adjust the...

Страница 41: ...the menu of ultrasonic flowmeter M25 the required measurement shall be made The pipeline is clean and the area is larger than the sensor Metal pipes should be treated with a grinder file or sandpaper until All see the metallic sheen 3 According to the ultrasonic sensor installation distance indicated in the menu M25 of the ultrasonic flowmeter according to the bracket probe Adjust the position of ...

Страница 42: ...nsion bracket should be used The diameter of the pipe measured with the extension bracket shall not be less than DN700 The extension bracket can be installed by the V method and the Z method and the Z method is generally recommended for installation so that the signal strength will be greater The installation distance can be measured using a random attached tape measure The installation distance i...

Страница 43: ... a strong magnet fixed magic belt fixed tension belt fixed steel belt fixed Bracket probe with strong magnet fixed for carbon steel pipe cast iron pipe can be fixed by the bracket probe with force magnet only need to adsorb the bracket probe on the outer wall of the pipe as shown in the figure below Note it is possible to reduce the magnetic force of a strong magnet if you measure a fluid at high ...

Страница 44: ... the black side up through the bracket probe magic belt fastening bracket fold in half after the force to tighten adjust the direction of the bracket probe and then paste firmly For small diameter pipeline the method is the same as above as shown in the figure below ...

Страница 45: ...is as follows Move the tensioner around the pipe and through the tensioner making sure it is not too tight Do the same with the other tensioner Pipe the fastening grooves on the bracket probe saddle into the two tensioning belts respectively adjust the direction of the bracket probe and tighten the tensioning belts forcefully ...

Страница 46: ... as follows Move the strip around the pipe and through the fastening screw then close it down not too tight Do the same for the other strip Pipe the fasFlow measurementtening grooves on the saddle of the bracket probe into two steel belts adjust the direction of the bracket probe and tighten the steel belt screws forcefully ...

Страница 47: ...ting the worst and 99 representing the best The normal working condition is the signal quality Q value 60 When installing please pay attention to the signal strength and quality the better the signal strength and Q value is high can ensure the flow meter measurement results are more stable and accurate Signal strength Q value Installation Result Judgment Below 60 Be unable to work 60 75 Bad 75 80 ...

Страница 48: ... requirement of measurement the measurement data obtained is accurate can see the measurement in 00 09 menu data including the instantaneous flow rate and the instantaneous velocity the cumulative amount of positive and negative cumulative amount date time heat flow total quantity of heat temperature current value and the corresponding value of the analog input net cumulative flow today and so on ...

Страница 49: ... timing printing 1 Screen copy printing Using the M99 menu you can copy and print the screen that is print what the screen shows Several print related menus M96 Menu paper tear off the paper before please click here M97 Menu print the content of the initial setup including the M11 M25 content set used to check whether the initial parameters set correct M98 Menu print measuring the contents of self...

Страница 50: ...ion you need to check the time in the M60 menu to avoid unsuccessful timing printing Interval time setting unit time minutes seconds the minimum interval is best not less than 5 seconds so as not to keep up with the printer Printing times setting 0 9999 times optional Printing times reach the set number of times the printer will stop working 5 3 Storage of measurement data Ultrasonic flow meter en...

Страница 51: ... how to handle this This is generally normal if the word G indicates that the instrument is performing automatic gain adjustment prior to the measurement Only when a long time always in this state the machine is not normal I means that the ultrasonic signal cannot be received so check whether the connection of the sensor is connected correctly and whether the sensor is reliable J indicates a hardw...

Страница 52: ...cker response 6 6 How to open or shut the totalizers Use M34 M35 and M36 to turn on or turn off the POS NEG or NET totalizer respectively 6 7 How to reset the totalizers Use M37 to reset the proper totalizer 6 8 How to restore the flow meter with default setups Use M37 when the selection message is displayed Press the dot key first and the message Master Erase will display then press the backspace...

Страница 53: ...he scale factor can be determined by calibration with flow calibration equipment 6 13 How to use the operation locker The system locker provides a means of preventing inadvertent configuration changes or totalizer resets When the system is locked menu window browsing can be done without affecting any change but any modifications are prohibited The system can be locked without a password or with a ...

Страница 54: ...gnal is at a maximum frequency of 1000Hz the minimum of 200Hz is going to be required for other instrumentation The user should enter 0 in M68 and 3000 in M69 and enter 200 and 1000 in window M67 Please note that the user has to make the selection with OCT setups in window M78 by selecting the 13th option reading like FO output to direct the frequency output to the OCT OUTPUT hardware device 6 16 ...

Страница 55: ...is out of a designated range set by the user There are two out of normal range alarms in this instrument They are called 1 Alarm and 2 Alarm The flow range can be user configurable through M73 M74 M75 M76 For example assume that the Buzzer should start beeping when the flow rate is less than 300 m3 h and greater than 2000m3 h the following steps for setups would be recommended 1 Enter 300 under M7...

Страница 56: ... serial interface 6 23 How to view the Date Totalizers Use M82 to view the date totalizers that are comprised of a daily totalizer a monthly totalizer and a yearly totalizer 6 24 How to use the Working Timer Use the working timer to check the time that has passed with a certain kind of operation For example use it as a timer to show how long a fully charged battery will last Under M72 press ENT ke...

Страница 57: ...Chapter 6 How to 52 6 27 How to know how long the battery will last Use M07 to check how long the battery will last Also please refer to 2 1 6 28 How to charge the built in battery Refer to 2 1 ...

Страница 58: ...e the upper left corner of the display will display F You can repower view the information displayed and click the table below to take specific measures If the problem persists contact the company The other category is error information about measurement as shown in Table 2 The problems and solutions are given in the following two tables 7 1 Power on Error Displays and Counter Measures The ultraso...

Страница 59: ...esponse to keystrokes Poor contact of the connector Same as above 7 2 Error Code and Counter Measures The ultrasonic flow meter will show Error Code in the lower right corner with a single letter like I R etc on menu windows M00 M01 M02 M03 M90 and M08 When any abnormal Error Code shows counter measures should be taken Code M08 menu corresponding display Reason Solution R System is working fine Th...

Страница 60: ...found during power on self test Try to re power on and observe the information displayed on the display and deal with it according to the previous table Permanent hardware failure G Gain adjustment in progress S1 If the machine stops on S1 or S2 or only switches between S1 and S2 it indicates that the received signal is too low or the waveform is not good Gain adjustment in progress S2 Gain adjust...

Страница 61: ...ed upstream 10D downstream 5D There are pumps valves etc nearby that cause fluid flow turbulence Keep the installation distance above 30D There is actually a pulsation Through the damping setting increase the corresponding time Ultrasonic waves cannot propagate into the pipeline and the measured value remains unchanged 1 Improper setting After confirming the reason temporarily remove the sensor cl...

Страница 62: ...minate the cause of the fault Although the flow rate is changing the measured value has not changed Water dissatisfaction Look for a part of the same pipeline that is full of water and move the sensor here Air bubbles mixed in Eliminate the mixing of bubbles When the water stops flowing and the measurement is in a normal state mixing of bubbles is the cause of the failure Increase the water level ...

Страница 63: ...or to the smaller part of the pipeline on the same pipeline Move the sensor to other parts or other pipes Try the large sensor option Move the sensor to the straight pipe A large amount of scale deposits inside the old pipe Lining peeling There is a gap between the lining and the pipe Thicker lining Due to the use of mortar lining the thickness is more than tens of millimeters The sensor is instal...

Страница 64: ...er in the pipe is not full or the pipe is empty Keep the value when the ultrasonic wave cannot propagate normal Error in measured value The pipe spec entered does not match the actual one When the inner diameter differs by 1 the measured value has an error of about 3 Enter the inner diameter value correctly Enter the scale thickness as the lining value Scale deposits in old pipes The length of the...

Страница 65: ...ration in the presence of fluid flow The solution is to go to window M43 to clear static zero zero and select YES 2 What is the reason for the flow data displayed by the flowmeter to be smaller or larger than that of the pipeline A 1 Incorrect Settings were made in the M44 window The solution is to enter the M44 window and enter the value 0 2 The sensor is not installed correctly 3 There is a zero...

Страница 66: ...ylbenzene 1340 Water 200 1333 0 15 Toluene 1170 0 69 Water 225 1249 0 14 Carbon tetrachloride 938 0 608 Water 250 1156 0 12 Kerosene 1420 2 3 Acetone 1190 0 407 Oil 1290 Methanol 1121 Pine oil 1280 Ethanol 1168 Trichloroethylene 1050 0 82 Alcohol 1440 1 5 Dagang Jet Fuel 1298 Ethyl ketone 1310 Daqing 0 Jet Fuel 1290 Acetaldehyde 1180 Peanut oil 1472 Ethylene glycol 1620 21 112 Castor oil 1502 Anil...

Страница 67: ... Speed of sound for common materials Pipe material Sound speed m s Lining material Sound speed m s Steel 3206 Teflon 1225 Iron 3230 Nodular cast iron 3000 Cast iron 2460 Stainless steel 3206 Lead 2170 Vinyl chloride 2640 ABS 2286 Titanium 3150 Aluminum 3048 Cement 4190 Brass 2270 Asphalt 2540 Cast iron 2460 Enamel 2540 Bronze 2270 Glass 5970 FRP 3430 Plastic 2280 Glass 3276 Polyethylene 1600 Polye...

Страница 68: ... 83 1553 6 9 1443 2 34 1517 7 59 1550 3 84 1553 2 10 1447 2 35 1519 7 60 1550 9 85 1552 8 11 1451 1 36 1521 7 61 1551 5 86 1552 4 12 1454 9 37 1523 5 62 1552 0 87 1552 0 13 1458 7 38 1525 3 63 1552 5 88 1551 5 14 1462 3 39 1527 1 64 1553 0 89 1551 0 15 1465 8 40 1528 8 65 1553 4 90 1550 4 16 1469 3 41 1530 4 66 1553 7 91 1549 8 17 1472 7 42 1532 0 67 1554 0 92 1549 2 18 1476 0 43 1533 5 68 1554 3 ...

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