Gas Flow Monitor CMG Series User`s Manual
Contents
1. Hold down key for at least five seconds Integrated flowrate past the decimal point When integrated flowrate is 10000m8 or more Integrated flowrate lower four digits _ gt Power ON r When integrated flowrate is 9999n8 or less Displaying the instantaneous flowrate and integrated flowrate When the power is turned ON the m3 h indicator lights to indicate the instantaneous flowrate To display the integrated flowrate press the key D The m indicator lights to indicate the integrated flowrate The display is a 4 digit display However the integrated flowrate is displayed as eight digits divided into upper four digits and lower four digits In all the integrated flowrate can be displayed up to 494949494944 While the lower four digits are displayed the decimal point lights to the right of the lowermost digit When the integrated flowrate is 4444 m or less pressing the key again returns the display to the instantaneous flowrate display When the integrated flowrate is GOGE mor more pressing the key displays the upper four digits of the integrated flowrate You can also alternately display the upper four digits and lower four digits by the key or key respectively For example if we assume that the initial reading is 2354 and the 2nd reading is a 5 5 then the integrated flowrate becomes 5 Bi g 4 U m3 If the key is held down for at least five seconds when switching to the integr2. Remove any dirt burrs or piping cutting oil from inside the pipes C Handling Precautions Do not overapply sealant Allowing entry of dirt burrs or piping cutting oil inside the pipes might cause error Good example Bad example Sealant Chapter 3 MOUNTING AND WIRING Connecting pipes Connect pipes while gripping the hexagonal section of the pipe connection port in the body with a spanner or wrench C Handling Precautions Do not grip the display or sensor terminal section Doing so might damage the body or cause leakage Do not tighten the pipe at a torque that exceeds the maximum tightening torque Model No Max Tightening Torque CMG250 125N m CMG400 200N m CMG500 250N m Flange connection Gasket A gasket is required for connecting the flange The following table shows the internal diameter dimensions of the gasket Pipe Size mm Internal Dimensions mm C Handling Precautions If the gasket inner diameter is too small the flow speed distribution may be disturbed and adversely influence accuracy If the gasket inner diameter is too large leakage may occur Align the inner diameters of the piping and the flowmeter and attach so that the gasket does not protrude into the inside of the piping Doing so might result in leakage Chapter 3 MOUNTING AND WIRING Flange Shape Use a flange that ensures a large contact area with the gasket O Good example X Badexample l
3. 15 Chapter 4 OPERATION H Displaying the total flowrate Display the total flowrate since the device was installed Reset cannot be performed by the reset operation of integrated flowrate Press the key to display the integrated flowrate D The m3 indicator lights Hold down the key for at least one second in this state DP The m3 indicator goes out and the total flowrate is displayed for five seconds The m3 indicator then automatically lights and the display returns to the integrated flowrate display Just like the integrated flowrate display the total flowrate is displayed as eight digits divided into upper four digits and lower four digits In all the integrated flowrate can be displayed up to 4999949494949n To read the upper four digits press the key again within five seconds while it is displayed You can also alternately display the upper four digits and lower four digits by the 4 key or 4 key respectively C Handling Precautions 16 The total flowrate indication returns to O after 4 4 4 4 4 4 44 is exceeded e Integrated flowrate and total flowrate values are held in memory even if the power is turned OFF On models that display values down to two digits past the decimal point data is backed up when 1 s value has changed or after one hour since the last backup On models that display values down to one digit past the decimal point data is backed up when 10 s value has changed or after one hour since the
4. electric shock CAUTION This device is a precision instrument Do not drop it nor subject it to shock Doing so might damage the device Do not peel off the pipe connection port seals until immediately before you connect the piping Doing so might allow foreign objects to enter the connector port and cause defective operation On rusty piping install a strainer at the upstream to prevent foreign matter from entering the device Foreign matter may cause faulty operation When wiring take care not to tug the display The components inside might become damaged Be sure to use only rated fuses for replacement Use of a non rated fuse prevents the safety circuit from functioning properly Be sure to check that the wiring is correct before you turn the power ON Incorrect wiring may cause damage or malfunction Connect the power supply last of all Touching other terminals by mistake may cause electric shock or damage the device Make sure that the load to be connected to terminals does not exceed the rating indicated in the specifications 66668 OF Supply power of the same voltage as that indicated on the model No label on the device A CAUTION Take the necessary countermeasures with the instrumentation to prevent the occurrence of backfire and to avoid any influence to the device even if backfiring has occurred Pressure increase in the piping or fire caused by the ba
5. model for moved from page 25 Old 26 and 27 7 pape lt 6 th Edition 25 26 D Connection piping size added WAMATAKE Specifications are subject to change without notice Yamatake Corporation Advanced Automation Company Totate International Building 2 12 19 Shibuya Shibuya ku Tokyo 150 8316 Japan URL http www yamatake com This has been printed on recycled paper 02 Printed in Japan 1st Edition Issued in July 2001 W 6th Edition Issued in Dec 2004 W
6. 0Vac 40 50 80 150m3 h 80 150m3 h 40 50 JIS 10K flange Air 80 150m3 h 4 to 20mA event output 24Vdc City gas 13A 100 200Vac 26 Chapter 7 SPECIFICATIONS H External dimensions Unit mm CMG150 250 ERE dS G 1 2 dread with depth 10min pn y u yk gt Mask t wl CMG250 Rc1 a CMG150 Re1 2 Y 2 HEX46 Se CMG400 500 r J G 1 2 thread with depth 10min y CMG500 Rc2 CMG400 Rc1 1 2 27 Chapter 7 SPECIFICATIONS CMG401 JIS 40A A JIS 40A CMG501 112 G 1 2 thread with depth aa Mask 232 28 Revision History Date 01 07 _ CP SP 1113E CI E 8mp81 Description changed on the 2nd item in WARNING Item added in CAUTION Old iii iv pages 3 added to the medium pressure model 3 description added Symbol table added Fuse model No for 24Vdc type changed 3 description changed Item of When sele
7. 1 150 150m h normal CMG40 50 4 1 to 5V output 4 10 30m h normal only 3 4 to 20mA event output Low pressure 2 Medium pressure JIS 10K flange only 2 Not available 24Vdc 100Vac 50 60Hz 200Vac 50 60Hz 00 None DO Inspection certificate provided YO Traceability certificate provided Chapter 1 INTRODUCTION Propane model Basic l Il Ill IV V VI VII VII IX Description model Pipe Pipe Gas Flow Output Pressure Commu Power Additional No size shape type range nication supply processing CMG Gas flow monitor 15 15A 1 2B 25 25A 1B 40 40A 1 1 2B 50 50A 2B 0 Rc screw P Propane 002 2m3 h normal CMG15 1 004 4m h normal CMG25 1 010 10m h normal CMG25 1 025 25m3 h normal CMG40 50 1 050 50m h normal CMG40 50 1 0 1 to 5V output 2 4 10m h normal only 3 1 4 to 20mA event output 0 Low pressure 2 0 Not available 0 24Vdc 100Vac 50 60Hz 2 200Vac 50 60Hz 00 None DO Inspection certificate provided YO Traceability certificate provided Butane model Basic Il Ill IV V VI VII VII IX Description model Pipe Pipe Gas Flow Output Pressure Commu Power Additional No size shape type range nication supply processin
8. 3 1 pulse 3 1m3 1 pulse The pulse rate of the decimal point 2 digits in measurement range differs from that of the decimal point one digit 18 Chapter 5 APPLICATION OPERATION 5 2 Parameter Setup H Setting operation Follow the procedure below to set parameters such as the flowrate alarm upper and lower limit setting values and alarm detection delay times 1 Press the key to display the instantaneous flowrate The m3 h indicator lights 2 If you hold down the lt key for three seconds item A HI is displayed on the 7 segment display and the parameter setup mode is entered 3 Press the 4 or v Jkey to select the desired setup item No and press the ent key 4 The current setting blinks on the 7 segment display Press the 4 or Cv key to change the setting to the desired value You can move to the digit to be changed by pressing the EE key 5 When you have finished changing the setting press the key to fix the setting At this point the setting is updated After about one second the item No is redisplayed 6 If you want to set up other items return to step 3 and repeat the procedure Otherwise proceed to step 7 7 Press the key to exit the parameter setup mode The display returns to the instantaneous flowrate display o Handling Precautions If you do nothing for one minute after entering the parameter setup mode the display automatically returns to the instantaneous flo
9. DALIAN PAN No CP SP 1113E Gas Flow Monitor CMG Series User s Manual Thank you for purchasing the CMG Series Gas Flow Monitor This manual contains information for ensuring correct use of the CMG It also provides necessary information for installation maintenance and trou bleshooting This manual should be read by those who design and maintain devices that use the CMG Series Be sure to keep this manual nearby for handy reference Yamatake Corporation RESTRICTIONS ON USE This product has been designed developed and manufactured for general purpose application in machinery and equipment Accordingly when used in applications outlined below special care should be taken to implement a fail safe and or redundant design concept as well as a periodic maintenance program e Safety devices for plant worker protection e Start stop control devices for transportation and material handling machines Aeronautical aerospace machines e Control devices for nuclear reactors Never use this product in applications where human safety may be put at risk REQUEST Ensure that this User s Manual is handed over to the user before the product is used Copying or duplicating this User s Manual in part or in whole is forbid den The information and specifications in this User s Manual are sub ject to change without notice Considerable effort has been made to ensure that this User s Manual is free from inaccuracies
10. INTENANCE AND TROUBLESHOOTING H Remedying trouble When a trouble occurred refer to the following table Nothing is displayed on the Make sure that the correct power voltage being applied and the display polarity are correct Check the connectors connecting the display to the sensor terminal section for disconnection and faulty contact Check the fuse to see if it is blown Replace the fuse if blown For details on how to replace the fuse see the next item li How to replace the fuse Err is displayed Check the connectors connecting the display to the sensor terminal section for disconnection and faulty contact If the connectors are free of abnormalities a probable cause is a sensor error Contact your Yamatake agent as repair by Yamatake is necessary Err g is displayed alternately A probable cause is an error in the memory adjusted for each with the flowrate value sensor Operation is continued with provisional data even though Erregis displayed In this case re adjustment by Yamatake is necessary as operation is performed with the error as it is The display is other than G OO Check the shut off valve and piping for any leaks even though the instantaneous If the valve and piping are free of leaks a probable cause is that flowrate should be zero the device s characteristics have changed including a minus display Contact your Yamatake agent as repair by Yamatake is necessary A minus is displayed for the Make sur
11. LESHOOTING H Remedying trouble eee eee eee eee eee nee 22 HE Howto replace th TUS Ciscs cs akc xe ACA Sate hae RR R atin hw TLA E93 bre Sore 23 Chapter 7 SPECIFICATIONS H Common specifications cccccccccccceeceeeeeeeec 24 H Individual specifications 00000404000000000 0000040 25 H Externaldimensions ccccecececcecccrceee ecce 26 Conventions Used in This Manual The following conventions are used in this manual CJ Handling Precautions Handling Precautions indicate items that the user should pay attention to when handling the CMG Note Notes indicate useful information that the user might benefit by knowing 1 2 3 The numbers with the parenthesis indicate steps in a sequence or indicate corresponding parts in an explanation Chapter 1 INTRODUCTION H Introduction The CMG gas flow monitor is a flowmeter for measuring the fuel flowrate of gas burners that use a microflow sensor chip a thermal flow speed sensor made using Yamatake proprietary technology The CMG displays and outputs the volume flowrate in a standard state and does not require conversion of temperature and pressure The CMG has the following functions instantaneous flowrate display integrated flowrate display alarm contact output instantaneous flowrate output according to analog output integrated pulse or event output according to open collector output Thes
12. MG in the following locations 1 Locations whose operating humidity exceeds 90 RH nb WwW N Oo Oona Locations whose operating temperature falls below 10 C and rises above 60 C Locations subject to sudden changes in temperature and condensation Locations subject to corrosive gases and flammable gases Locations where there are lots of conductive substances e g dust salt or iron dust or organic solvents Locations subject to vibration or shock Locations subject to direct sunlight Locations splashed by water or rain directly Locations subject to splashing by fluids e g oil chemicals 10 Locations where strong magnetic or electrical fields are generated Gas flow C Handling Precautions Make sure that the gas flows into the device in the direction indicated by the FLOW arrow on the side of the flow path Otherwise the flowrate cannot be measured correctly Chapter 3 MOUNTING AND WIRING Mounting position Z CAUTION Do not mount so that the display is facing down This device can be used at the mounting position with the display facing up 90 Doing so might cause error or trouble Wrong C Handling Precautions The length of the required straight pipe connection varies according to the model No For details see Chapter 7 SPECIFICATIONS Screw connection Coating sealant Coat with an appropriate amount of sealant Do not coat the top two threads of the screw
13. and omissions If you should find any inaccuracies or omissions please contact Yamatake Corporation In no event is Yamatake Corporation liable to anyone for any indirect special or consequential damages as a result of using this product 2001 Yamatake Corporation ALL RIGHTS RESERVED uF is a registered trademark of Yamatake Corporation CMG Series is a trademark of Yamatake Corporation WH SAFETY PRECAUTIONS J H About Icons Safety precautions are for ensuring safe and correct use of this product and for preventing injury to the operator and other people or damage to property You must observe these safety precautions The safety precautions described in this manual are indicated by various icons As the following describes the icons and their meanings be sure to read and understand the descriptions before reading this manual WA R N N G Warnings are indicated when mishandling this product might result in death or serious injury to the user CA U TI O N Cautions are indicated when mishandling this product might result in minor injury to the user or only physical damage to this product H Examples wrongful operation or misuse of this product These icons graphically represent the actual danger The example on the left warns the user of the danger of electrical shock Triangles warn the user of a possible danger that may be caused by prohibited to prevent possible danger These icons graphically represe
14. andling Precautions CCW rotation max 180 2 CW rotation max 180 Operation panel display Combination No indication Connector leads Sensor terminal section e House the leads connecting the sensor terminal section and the operation panel display from being unnecessarily twisted or nipped Align the leads matched to the sensor terminal section Prevent the leads connecting the sensor terminal section and the operation panel display from being damaged Do not rotate the operation panel display beyond 180 to the left or right This section may be rotated to the left or right if it is mounted with the top and bottom reversed e Use the operation panel display and sensor terminal section with the same combination of combination Nos Combination Nos differ from device to device as each device is adjusted individually If different combination Nos are combined accuracy can no longer be guaranteed The combination Nos are each displayed on the operation panel display and sensor terminal section 13 Chapter 4 OPERATION CAUTION S Do not operate the keys with a propelling pencil screwdriver or other sharp tipped object Doing so might damage the keys H Displaying the flowrate The following values can be switched and displayed on the 4 digit 7 segment LED on the display 1 Instantaneous flowrate 2 Integrated flowrate The following shows the operation flow for displaying the flowrate
15. andling Precautions e Use crimped terminal lugs that enable a reliable connection for firmly connecting to terminals Use crimped terminal lugs that are compatible with M3 5 screws Limit the terminal screw tightening torque to 0 8N m Use JIS C 3401 control cable CVV etc of maximum outer diameter 2 2mm for wiring If waterproofing is required be sure to use the seal connector Yamatake model No PA4 N2 PA4 N4 or equivalent product for reliable sealing When wiring to terminal 2 COM on a 24Vdc power supply type wire the analog output lead COM separately from the power lead COM Otherwise a voltage drop caused by the power current may influence the accuracy of analog output Chapter 3 MOUNTING AND WIRING Mounting the operation panel display C Handling Precautions The maximum screw tightening torque is 1 0N m IP54 sealability might be impaired if screws are tightened too tightly resulting in too lose tightening On this device the operation panel display can be rotated up to 180 to an easy to view position depending on the device s mounting position Follow the procedure below to mount the operation panel display 1 Connect the connectors of the leads from the operation panel display to the sensor terminal section 2 Align the display on the operation panel display to the most easily visible direction 3 Fasten the operation panel display onto the sensor terminal section with screws C H
16. antaneous flowrate display C Handling Precautions If you do nothing for one minute after entering the function setup mode the display automatically returns to the instantaneous flowrate display If you press the B key without pressing the key after carrying out the operation in step 4 the setting remains at the previous value without being updated 17 Chapter 5 APPLICATION OPERATION H Function setup item list Display Item Description Setup Item and Description eee C 01 Key lock 0 Po T lock disabled The key lock can be disabled even 1 All settings oe locked while it is enabled C 02 Flowrate alarm 0 Alarm detection is not performed The alarm detection flowrate is set in detection condition 1 Only the upper limit alarm is the parameter setup mode selection detected Lower limit alarm 1 2 Only lower limit alarm 1 is A flowrate less than the lower limit of detected the measurement range is not 3 Upper limit alarm and lower limit judged as an alarm alarm 1 are detected Lower limit alarm 2 4 Only lower limit alarm 2 is A flowrate less than the lower limit of detected the measurement range is judged as 5 Upper limit alarm and lower limit an alarm alarm 2 are detected Event output 1 0 Not used OFF at all times relay function 1 ON when upper limit alarm assignment occurs 2 ON when lower limit alarm occurs 3 ON when upper limit alarm or lower limit alarm occurs 4 ON when integration event occu
17. ated flowrate display from the instantaneous flowrate display digits past the decimal point for the integrated flowrate are displayed 14 Chapter 4 OPERATION C Handling Precautions When the flowrate exceeds the upper limit of the measurement range the OVER indicator blinks and goes out after the flowrate returns to within the measurement range The integrated flowrate factory setting is D The integrated flowrate indication returns to after 444444944 is exceeded The flowrate is integrated even if the flowrate is outside of the measurement range Regard integrated values as a means for grasping the overall flowrate to date H Resetting alarms Press the key D The alarm indicator goes out and the alarm output relay turns OFF C Handling Precautions Alarms are also reset by turning the power OFF The alarm re occurs after the alarm occurrence wait time when the flowrate exceeds the alarm setting value after the flow monitor is re energized H Resetting the integrated flowrate Hold the RESET key down for at least two second while the integrated flowrate is displayed DP The integrated value becomes D C Handling Precautions Holding down the key for two seconds or more while an alarm has occurred merely stops the alarm it does not reset integrated values In this case reset the alarm after the flowrate returned to within the preset alarm range and then hold down the key again for two seconds or more
18. ckfire of the burner could damage the device iii Contents SAFETY PRECAUTIONS Conventions Used in This Manual Chapter 1 INTRODUCTION H IntrodUcnHON z sas dinar nashe EEE RER ATE edad ACE RORE SRP RESE 1 H Features a ek ccci ces asc citis Hes ctw sti EE E E RT E RRR E REE SO S DEA 1 M Modelselectionguide 00c00000400000006000000000000060000008era 2 Chapter 2 NAMES AND FUNCTIONS OF PARTS Chapter 3 MOUNTING AND WIRING H Mounting e E oy E V he BES her oe Reb BOR be E R E E A e a Sea e 6 HE WIING ccccccccccccicicccccrcccccrercccerecrocececroceoeoccocococsoeoenes 11 Chapter 4 OPERATION H Displaying the flowrate c ccc cciciciciccceeeceeeeaaees 14 HM Resettingalarms 0000 ccccecccceeocccceociceeociceeeecs 15 H Resetting the integrated flowrate 2 2000 cece eee eee 15 H Displaying the total flowrate 6 cece cence cee eee ences 16 Chapter 5 APPLICATION OPERATION 5 1 Function Setup eee eee 0020070106 eee SR 17 H Setting operation 6 eee e cece cee e ete ene e nee 17 HM Function setup itemlist cece eee eee eee eee eens 18 5 2 Parameter SetUp gt ssass5655005006860800696039 6000906000004630 biian Es 19 H Setting operation 02 cc ccccccccrcccccceccireeociceneaas 19 HM Parameter setup itemlist 000222 cceeecee00c000000 20 Chapter 6 MAINTENANCE AND TROUB
19. cting a medium pressure model for air and city gas 13A added Old pages 26 and 27 3 changed Symbol of direct current changed The power supply symbol changed to the one of a model complying with CE C 09 the description on setup item and description and remarks changed Setup range of No 1 10 0 to 200 changed to 0 to 400 Setup range of No 2 to 4 11 0 to 100 changed to 0 to 200 Setup range of No 9 10 to 10 changed to 20 to 20 Setup range of No 12 0 600 to 1 400 changed to 0 100 to 4 000 Output range of instantaneous flowrate output 200 changed to 400 Decimal point 2 digits of event output 2 0 1m3 pulse added Decimal point 1 digit 1m3 pulse added Applicable standards added Measurement range 2 display range changed to Flowrate range m h normal 1 measurement range upper 2 display range lower 13A N changed to City gas 13A Moved from 26 page Old 27 28 page Description added to the 4th item in Features Description added in CAUTION Description added to the 2nd line from the top Description added to the 3rd item in Handling Precautions also the 4th item added Description on C 04 changed in Remarks column No 9 and 11 factory setting values changed from 0m to Om3 h Specifications table changed on the item of Upstream straight pipe connection Item of Straight pipe section guide line added Item of When selecting a medium pressure
20. e functions enable detailed air fuel ratio management of burners and flowrate management of units Factory setting is 0 C 1 atmosphere The reference temperature can be selected from 5 C 10 C 15 C 20 C and 25 C according to the function settings H Features Installation of the compact and high precision CMG is simple It can also be mounted in any direction as the direction of the display can be changed Gas flowrate can be measured and managed easily on the flowrate digital display and Hi Lo OVER and ALARM LED displays Displaying on panels and flowrate management can be performed easily by output of the gas flowrate upper limit lower limit settings and analog output of instantaneous flowrate Fuel usage can be easily understood as the instantaneous flowrate and integrated flowrate displays can be switched by one touch operation The total flowrate since this device was installed can be displayed Compensation of display values is not needed even if temperature and pressure change as the measurement method used is mass flow A bypass structure using an orifice enables low pressure loss and prevents the influence of mist etc Self diagnostic functions simplify remedies during troubleshooting Chapter 1 INTRODUCTION Model selection guide Model selection guide Air model ome Basic l Il III IV V VI Vil VII IX Description Gas type model Pipe Pipe No size shape Flow
21. e operation panel display 3 Remove the fuse cover For details see Chapter 2 NAMES AND FUNCTIONS OF PARTS 4 Remove the fuse 5 Attach the new fuse 6 Attach the fuse cover 7 Attach the operation panel display at its original position on the sensor terminal section C Handling Precautions When a fuse blows check for abnormal power voltage miswiring or other causes of the fuse having blown Replacement of parts is precision work Take sufficient care not to lose or damage removed components 23 Chapter 7 SPECIFICATIONS H Common specifications Item Applicable gas Rated voltage Flowrate display method Storage ambient tempereture 20 to 70 C no freezing alowed _ _ Allowable ambient humidity 40 C 90 RH or less no condensation allowed Instantaneous City gas Measurement range ae 13A air Accuracy 4 RD 1 digit 10 to 40 C isplay 6 RD 1 digit 10 to 60 C accuracy Propane Measurement range butane Accuracy 6 RD 1 digit 10 to 40 C Instantaneous flowrate 1 RD 1 digit 20 C repeatability Instantaneous 1 to 5Vdc Output range 0 to 400 of measurement range upper limit scalable flowrate output voltage Accuracy 0 5 FS Wiring distance Within 10m External load resistance 10kQ or more 4 to 20mA Output range 0 to 400 of measurement range upper limit scalable current Accuracy 0 5 FS output Load resistance 3000 max Event output 1 1a contact closes at e
22. e that the arrow marked on the flow path matches the instantaneous flowrate direction of gas flow If the directions are inverted correct the connection directions C Handling Precautions Err g memory error indicates that adjustment data of individual sensors in the flowmeter is lost Accuracy cannot be guaranteed if use of the flowmeter is continued in this state Ask for repair 22 Chapter 6 MAINTENANCE AND TROUBLESHOOTING H How to replace the fuse NCAUTION When touching internal parts touch a grounded metal part to discharge static electricity from the body Otherwise static electricity may damage components Before replacing the fuse be sure to turn the power OFF to prevent electric shock Be sure to use a fuse having an electrical rating of 250V 0 5A for replacement on the 24Vdc power supply type and a fuse having an electrical rating of 250V 2 0A for replacement on the AC power supply type Use of a non rated fuse prevents the safety circuit from functioning properly Items to prepare Phillips screwdriver Fuse 24Vdc power supply type Made by Bussmann Cooper U K LTD Model No S504 500mA 250V 0 5A Made by LITTELFUSE TRACOR LTD Model No 218 500 250V 0 5A Fuse blowout speed Rated voltage 250V AC power supply type Made by Toyo Fuse Model No MF51NR250V2 0A 250V 2 0A Replacement procedure 1 Loosen the four screws on the operation panel display 2 Gently lift up th
23. g CMG Gas flow monitor 15 15A 1 2B 25 25A 1 B 40 40A 1 1 2B 50 50A 2 B 0 Re screw B Butane butane 75 propane 25 001 1m h normal CMG15 1 003 3m h normal CMG25 1 008 8m h normal CMG25 1 020 20m h normal CMG40 50 4 040 40m h normal CMG40 50 4 1 to 5V output 1 3 8m h normal only 3 4 to 20mA event output 0 Low pressure 2 0 Not available 0 24Vdc 1 100Vac 50 60Hz 2 200Vac 50 60Hz 00 None DO Inspection certificate provided YO Traceability certificate provided 1 normal refers to the volumetric flowrate m3 h after converting to 0 C 1 atmosphere 2 For the selection of a medium pressure model refer to the item of INWhen selecting a medium pressure model for air and city gas 13A on page 25 3 1 to 5V output model does not have an event output For use of the integrated pulse output integrated event output and upper lower limit alarm select a 4 to 20mA model Chapter 2 NAMES AND FUNCTIONS OF PARTS OVER indicator Lights when the flowrate exceeds the measurement range Blinks when the integration event occurs Lo indicator Lights when setting alarm Blinks when the lower limit alarm occurs m m3indicator Lights during integrated flowrate display Goes out during total flowrate display Blinks once at each pulse output Hi i
24. ing NCAUTION Prevent the load connected to the output terminal from exceeding the rating indicated in the specifications Failure to do so might cause damage Be sure to check that the wiring is correct before you turn the power ON Incorrect wiring might cause damage or malfunction The following table describes the meaning of symbols indicated on the terminal layout label on the CMG Symbol Meaning Direct current Danger of electric shock Removing the operation panel display Item to prepare Phillips screwdriver 1 Loosen the four screws on the operation panel display using a Phillips screwdriver 2 Lightly lift up the operation panel display and disconnect the power lead connectors from the operation panel display Wiring 24Vdc power supply model The following shows wiring of the 24Vdc power supply model and signal names i Internal circuit Terminal 1 Terminal 2 ad KHK 1 to 5V or 4 to 20mA output Open collector output Termianl 5 RELAY Terminal 6 RELAY TET 24Vdc Power supply C e RELAY Event Output Contact output 11 Chapter 3 MOUNTING AND WIRING 12 Wiring AC power supply model The following shows wiring of the AC power supply model and signal names Internal circuit Terminal 1 Terminal 2 Terminal 6 OUT i 1 to 5V or 4 to 20mA output Terminal 7 EVENT Pe out Analog ouput1105Vdc0r4t020mA C H
25. l 1 Air 0 00 to 7 00 0 00 to 16 00 0 0 to 35 0 0 0 to 100 0 0 0 to 170 0 0 0 to 100 0 0 0 to 170 0 range Upper 2 0 00 to 3 00 0 00 to 6 00 0 00 to 12 010 0 0 to 30 0 0 0 to 55 0 __ 0 0 to 30 0 0 0 to 55 0 0 00 to 1 50 0 00 to 4 50 _ 0 00 to 10 00 0 0 to 25 0 _ 0 0 to 45 0 __ 0 0 to 25 0 0 0 to 45 0 length for 90bent pipe side more more more more more side more more more more more Pressure loss Upper limit value Flange connection 390Pa 840Pa 250Pa 430Pa in air measurement Rc thread Approx 850g Approx 800g Approx 2100g Approx 2000g Farge PA 8 Approx 10 kg 1 normal refers to the volumetric flowrate m3 h after converting to 0 C 1 atmosphere 2 The measurement range is the flowrate range in which instantaneous flowrate display accuracy is stipulated 3 Straight pipe longer than the length specified above may be required depending on the pipe shape or other devices mounted on the piping The length of downstream straight pipe section is a standard value Straight pipe section guide line Same diameter pipe A and B diameters are same Upstream side elbow Downstream side elbow gt As per individual As per individual specifications specifications eo CMG CMG Different diameter pipe A diameter is different from B diameter D Connection piping size Upstream side enla
26. lange first check the piping for tilting or out of center before installing Failure to do so might cause leakage When mounting the device firmly fasten to prevent vibration Do not peel the protective seals from the display before use When performing work on the device tools may accidentally bump against the display and scratch it When using the device outdoors mount it out of the direct sunlight and at a location where it is not splashed directly with rain When mounting the device in locations where rust oil mist or dust and powder exists be sure to provide a strainer filter at the upstream to prevent foreign matter from entering the device Foreign matter flowing into the device might result in faulty operation When wiring the device take care not to tug the display The internal connections might become damaged e Wire 1 to 5V output 4 to 20mA output open collector output and communications separately from the power line and power supply leads Do not wire these outputs in the same conduit as the power line and power supply leads Doing so might cause malfunction Install a switch for shutting of main power to the device within reach of the person operating the device The common mode voltage between output and Ground is less than 30r m s 42 4V at peak or 60Vdc excluding power supply and relay contact output Chapter 3 MOUNTING AND WIRING H Mounting Installation site Avoid mounting the C
27. last backup Integrated values that have not been backed up are discarded when the power is turned OFF The total flowrate reset setting can be configured to either enabled or disabled condition by function setup When the Reset is performed by key switch is selected press the key for 2 seconds or more while displaying the total flowrate The total flowrate and integrated flowrate will be reset and initialized to QQ Chapter 5 APPLICATION OPERATION 5 1 Function Setup H Setting operation Follow the procedure below to set functions such as alarm detection and event output assignments 1 Press the key to display the instantaneous flowrate The m3 h indicator lights 2 If you simultaneously hold down the v and the keys for three seconds item No C 01 is displayed on the 7 segment display and the function setup mode is entered 3 Press the 4 or v key to select the desired setup item No and press the key 4 The current setting blinks on the 7 segment display Press the 4 or v key to select the desired setting 5 When you have selected the desired setting press the key to fix the setting At this point the setting is updated After about one second the item No is redisplayed 6 If you want to set up other items return to step 3 and repeat the procedure Otherwise proceed to step 7 7 Press the key to exit the function setup mode The display returns to the inst
28. mal 0 0 to 999 9s 0 to 99 999 999m3 0 0 to 999 9s 20 to 20 of measurement upper limit m3 h normal O to 400 of measurement upper limit m3 h normal O to 200 of measurement upper limit m h normal 0 100 to 4 000 Selection of alarm detection condition is required in function setup C 02 Setting value valid only when selecting integration event output in either C 03 or C 04 of function setup Setting value valid only when selecting automatic reset by integration reset delay in C 06 of function setup normal refers to the volumetric flowrate m3 h after converting to 0 C 1 atmosphere C Handling Precautions e 4 Be certain to set flowrate within the upper limit display It will not detect the alarm if setting is made above the upper limit 2 When lower limit alarm1 is selected in function setup C 02 it will not detect the alarm when the flowrate is less than the lower limit of measurement range even if the flowrate is below the lower 20 limit alarm setting value Chapter 5 APPLICATION OPERATION Instantaneous flowrate upper limit alarm operation ON OFF ii i Hysteresis l Instantaneous flowrate upper limit alarm setting value P INStantaneous flowrate Instantaneous flowrate lower limit alarm operation ON OFF i Hysteresis Instantaneous flowrate lower limit alarm setting value cr Instantaneous flowrate 21 Chapter 6 MA
29. ndicator Lights when setting alarm Blinks when the upper limit alarm occurs Alarm indicator Blinks when an alarm occurs Display Displays the instantaneous flowrate value integrated flowrate value total flowrate value function setting values and parameter setting values in 7 segment LED display RESET key Use this key to reset alarms integrated flowrate and the zero adjustment mh indicator Lights during instantaneous flowrate display DISP key Use this key to switch between instantaneous flowrate display and integrated flowrate display and from setup mode to instantaneous flowrate display makey Use this key to increment the setting value w key Use this key to decrement the setting lue Also use it to move to the function setup mode lt 4 key Use this key to feed digits when changing setting values Also use it to move to the parameter setup mode Operation panel Operate this panel to set alarms set the alarm occurrence wait time reset alarms and reset the integrated flowrate Operation unit cover Open this cover to make the various settings and reset settings Wiring hole There are two wiring holes Attach the plug and seal packing provided in the unused hole Outlet This is where the liquid to be measured flows out Fuse position Fuse 24Vdc power supply model Terminal screw M3 5 x 6 ENT key Use thi
30. nt the actual prohibited action The example on the left notifies the user that disassembly is prohibited White circles with a diagonal bar notify the user that specific actions are Black filled in circles instruct the user to carry out a specific obligatory action to prevent possible danger These icons graphically represent the actual action to be carried out The example on the left instructs the user to remove the plug from the outlet S AWARNING When using combustion gas install the device at the upstream of the safety shut off valve If air enters the piping and the sensor sparks due to lightning when an explosive mixture is present an internal pipe explosion may be caused O The device is intended for use with city gas 13A air propane and butane Do not use the device for other type of gases Use of the gases having an ignition temperature lower than 365 C may cause internal pipe explosion by a heater incorporated in a sensor and working as an ignition source if air has entered the piping and explosive mixed gas is produced Use the analog outputs and alarm contact outputs on the device for monitoring the gas flowrate of a burner or other equipment Do not use these outputs in applications where safety will be impaired when an analog output abnormality or alarm contact output malfunction occurs Before wiring the device be sure to turn the power OFF Failure to do so might cause
31. range Output Pressure Commu nication Power supply Additional processing CMG 15 Gas flow monitor 15A 1 2B 25 25A 1B 40 40A 1 1 2B 50 50A 2B Rc screw JIS 10K flange 40A 50A only Air 004 4m3 h normal CMG15 1 010 10m h normal CMG25 1 030 30m h normal CMG25 1 080 A 150 1 3 80m3 h normal CMG40 50 150m3 h normal CMG40 50 1 to 5V output 4 10 30m h only 4 to 20mA event output Low pressure 2 Medium pressure CMG250 30m h and CMG400 401 CMG500 501 2 City gas 13A model LNG CH1 88 Not available 24Vdc 100Vac 50 60Hz 200Vac 50 60Hz 00 None DO Inspection certificate provided YO Traceability certificate provided Basic l II lll IV V VI VII VII IX Description Gas type model Pipe Pipe No size shape Flow range Output Pressure Commu nication Power supply Additional processing CMG Gas flow monitor 15 15A 1 2B 25 25A 1B 40 40A 1 1 2B 50 50A 2B Re screw JIS 10K flange 40A 50A only City gas 13A 004 4m h normal CMG15 4 010 i 030 10m h normal CMG25 4 080 30m h normal CMG25 80m h normal CMG40 50
32. rged Downstream side reduced Different diameter socket Different diameter socket 1 5D gt gt 3 _ CMG CMG f F A B B A Upstream side reduced Downstream side enlarged Different diameter socket Different diameter socket 10D gt t CMG CMG 1 A B B A Upstream side enlarged Downstream side reduced Enlarging pipe is Used Reducing pipe is Used 10D 5D gt r ft CMG CMG A B B A Upstream side reduced Downstream side enlarged Reducing pipe is used Enlarging pipe is used 10D 5D gt Xz ova CMG tT A B B A 25 Chapter 7 SPECIFICATIONS Valves at full open condition D Connection piping size Upstream side Downstream side Globe valve and needle valve 30D Ball valve 10D For all types of valves 5D O CMG CMG C Handling Precautions In case of a globe butterfly or needle valve which causes disturbance or fluctuations to the flow a straight pipe length of more than 30D is required to be installed Install a flow adjusting valve in the downstream side of the CMG as much as possible Contact Yamatake Corporation for the valves other than the above When selecting a medium pressure model for air and city gas 13A On a medium pressure model for air and city gas 13A any combination other than the following can not be selected Pipe shape Gas type Flowrate range Output Power supply Rc thread 30m3 h 4 to 20mA event output 100 20
33. rs Event output 2 0 Not used OFF at all times This item is enabled only for the model open collector 1 ON when upper limit alarm with optional event output function function occurs D EDI assignment 2 ON when lower limit alarm occurs 3 ON when upper limit alarm or lower limit alarm occurs 4 ON when integration event occurs 5 Integration pulse output Flowrate alarm 0 Only reset by key switch reset method 1 Reset by key switch or automatic selection reset by normal recovery of flowrate Integrated flowrate 0 Reset is not performed reset method 1 Only reset by key switch selection 2 Only automatic reset after the integration reset delay time when the integration event occurs 3 Reset by key switch or automatic reset after the integration reset delay time when the integration event occurs C 07 Total flowrate reset 0 Reset is not performed method selection 1 Reset is performed by key switch Reference 0 0 C 1 atmosphere reference temperature C 1 atmosphere reference selection The integration flowrate is also reset when the total flowrate is reset The reference temperature of flowrate output can be switched C 1 atmosphere reference C 1 atmosphere reference C 1 atmosphere reference C 1 atmosphere reference Pulse rate Dicemal point 2digits Dicemal point 1digit selection 0 0 001m3 1 pulse 0 0 01m3 1 pulse 1 0 01m3 1 pulse 1 0 01m3 1 pulse 2 0 1m3 1 pulse 2 0 1m3 1 pulse 3 0 1m
34. s key to fix and store the setting values to memory Also use it to display total flowrate to perform zero adjustment or to move to the function setup mode L Sensor terminal section Houses the microflow sensor chip amplifier and wiring terminal plates lt Inlet This is where the liquid to be measured flows in E Flow path This is where the liquid to be measured flows through Fuse Terminal screw M3 5 x 4 Terminal screw M3 5 x 3 AC power supply model Chapter 3 MOUNTING AND WIRING 7 WARNING When using combustion gas install the device at the upstream of the safety shut off valve If air enters the piping and the sensor sparks due to lightning when an explosive mixture is present an internal pipe explosion may be caused On flange models do not use the device or installed pipes as a foot rest Doing so might damage the device or piping or cause you to slop which may result in injury Flange models are heavy Dropping them on your feet may cause injury Q Q D Handling Precautions When carrying the device hold it by its flow path section Holding it by its sensor terminal section may damage the device e The device is a precision instrument Do not drop it or subject it to shock Doing so might damage the device When connecting the device by screws fasten the flow inlet section and turn the pipe side to connect the piping When connecting the device by a f
35. t Flange Leakage may occur as the gasket contacting part is small Welded part Welded part gt P Pipe Mounting The figure below shows how to actually mount the flowmeter Before installing the flowmeter be sure to flush the piping to remove any foreign objects inside g Handling Precautions Do not flush the piping with the flowmeter attached Doing so might cause foreign objects to enter the flowmeter and cause error Chapter 3 MOUNTING AND WIRING Tighten according to the torque in the following table Aperture Flange Rating Torque Nem 40mm JIS10K 22 to 32 50mm JIS10K 24 to 34 C Handling Precautions e Tighten bolts so that they are uniformly tightened If leakage does not stop after tightening bolts gradually tighten the bolts more a little at a time e Tighten bolts within the specified tightening torque Otherwise the bolts may be damaged Do not mount as shown in the following figure Doing so might cause leakage Do not exert unnecessary force on the narrow section between flange surfaces Doing so might damage the device aun ur tHE di T Tilted piping Out of center p Out of center 10 Chapter 3 MOUNTING WIRING E Wir
36. vent generation Contact rating 250Vac 30Vdc 5A resistance load Mechanical life 20 million cycles Electrical life 100 000 cycles Event output 2 Output configuration NPN open collector output Load 30V 50mA max When integrated pulse output is selected Pulse width 100ms 20 For decimal point 2 digits in measurement range Select either of 0 001m pulse 0 01m pulse or 0 1m pulse For decimal point 1 digit in measurement range Select either of 0 01m pulse 0 1m pulse or 1m3 pulse Medium pressure model Less than 1 0MPa Pressure resistance Low pressure model 150kPa Medium pressure model 1 5MPa Conduit size Vibration resistance Shock resistance Voltage resistance 24Vdc power supply model Terminals 5 and 6 and flow path 1500Vac for 1min or 1800Vac for 1s AC power supply model Terminals 1 and 2 and flow path 1500Vac for 1min or 1800Vac for 1s Terminals 3 and 4 and flow path 1500Vac for 1min or 1800Vac for 1s Insulation resistance Between each terminals and flow path metal parts min 50MQ 500Vdc Protection IP54 JIS C 0920 Applicable standards EN61326 1 1997 A1 1998 EN61010 1 1993 A2 1995 DC model onl 1 Propane gas composition Propane 98 class B 2 Butane gas composition Butane 75 propane 25 24 Chapter 7 SPECIFICATIONS H Individual specifications Model No CMG15 CMG25 CMG40 CMG50 Piping size Re 1 2 Ro 1 1 2 Rc 2 Flange connection gt gt 0A JIS 10K RF 50A JIS 10K BF m3 h norma
37. wrate display e If you press the key without pressing the key after carrying out the operation in step 4 the setting remains at the previous value without being updated 19 Chapter 5 APPLICATION OPERATION H Parameter setup item list EZ PY Item Item Description Factory Setting Setup Range A HI Instantaneous flowrate upper limit alarm A H Hy Hysteresis for instantaneous flowrate upper limit alarm A Lo 2 lInstantaneous flowrate lower limit alarm A L Hy Hysteresis for instantaneous flowrate lower limit alarm A dLy Delay timing for instantaneous flowrat alarm judgement ESPL Integration event setup lower four digits E SP H ntegration event setup upper four digits E C dL Integration reset delay time blIAS Instantaneous flowrate bias PV bias out H Instantaneous flowrate output 5V 20mA scaling out L Instantaneous flowrate output 1V 4mA oral gAS C Gas composition compensation coefficient ra o adi i N Upper limit of measure range m3 h normal Within 2 of measurement upper limit m3 h normal Lower limit of measure range m3 h normal Within 2 of measurement upper limit a normal Upper limit of measure range m3 h normal 0 to 400 of measurement upper limit m h normal 0 to 200 of measurement upper limit m h normal 0 to 200 of measurement upper limit m h normal 0 to 200 of measurement upper limit m h nor
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