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User manual - cowellmac.com

1. Model OGM I 10 OGM I 15 OGM I 20 OGM I 25 OGM I 40 OGM I 50 OGM I 80 OGM I 100 OGM I 150 DN mm 10 15 20 25 40 50 80 100 150 Min flow rate 0 08 0 3 0 3 0 6 1 6 5 6 10 32 m3 h Max flow 0 4 1 6 3 6 16 25 50 80 190 rate m3 h Basic error 0 5 Working 10 80 150 Term C Normal 1 6 Pressure Mpa Pressure 0 1 Lose Mpa Liquid 2 75 Viscosity Mpa s 4 Structure Picturel The material of body is cast iron Picture2 The material of body is 304 stainless steel Picturel Magnetism connection prz oos se rry Si arum rr gud do rm TE ar Integrat ng mechanism Drive wheels Claphoard Passive permanent magnet Initiative permanent magnet Caver Cover board Oval wheel Shalt us Body Picture2 Shaft connection Megrating Matha erm ne Tive wheels Nut Sea washer Cover 5 Setting and Usage 1 The direction of setting meter should make the direction of arrowhead marked on the shell of the meter and flowing liquid be consistent 2 The meter should better set in normal temperature do not set in noxious gas and strong hot radiation situation for fear parts of the meter would be damaged 3 Oval gear flow meter should better set on the level position so that to decrease the attrition of the both sides of Oval gear flow meter and the shell 4 The meter should set on the fan out of the
2. ee 6 Adjustment gear list Original checkout result Tooth amount of the gear Fast or slow Deviation Zl and gear7 inosculate Z2 and gear6 inosculate 3 05 40 38 2 92 39 37 2 77 38 36 2 64 37 35 2 48 36 34 2 32 35 33 2 14 34 32 1 95 33 31 1 75 32 30 Fast 1 55 31 29 1 46 46 43 1 32 45 42 1 15 44 41 0 99 43 40 4 0 81 42 39 0 63 41 38 0 42 40 37 0 22 39 36 0 00 38 35 0 23 37 34 0 48 36 33 0 74 35 32 0 86 46 42 1 10 45 4 Slow 1 32 44 40 1 56 43 39 1 80 42 38 2 06 41 37 2 34 40 36 7 Checking and arrangement of malfunction phenomena Cause Measure remark Oval gear can t move 1 In setting period impurity get in and lock the oval gear Remove and wash it refix it according to the mark on the oval gear New meter is subject to happen according to the mark to set 2 The testing liquid is not pure filter is filled with impurity Wash the filter clear the impurity 3 the pressure of testing liquid is low Add pressure 2 Oval gear can move but the pointer can not move 1 Transmission wheel lock Clear the impurity and add lube 2 The rivet of gear loosing Riveting the gear again 3 Pointer wobble at turn back 1 Flow rate is higher than standard Adjust it at the standard rate 4 The turning oval g
3. the add deviation is about 0 14 100 C 14 The flow rate on the pipeline should not be increased and reduced forcefully it should avert vibration and the phenomenon of waterpower impact and strongly undulation of pressure and or it may affect the regular work of the meter 15 The pressure loss and the square liquid flow rate are positive ratio and with the liquid viscosity increasing the pressure loss also add Adjustment Within the standard minimum and maximum range the basic deviation of meter is not beyond 0 5 The calculation method of the deviation indicated by percentage of the difference of accumulative indicated flow rate on the meter Qing and the actual flow rate of standard container Qao with Qact as follows Deviation Qing Qac Qat X 100 The meter run fast deviation is indicated with The meter run slow deviation is indicated with To shorten the difference between meter and the actual flow rate the meter set a transmission ratio device the adjust gear on the adjust board can exchange Checking the meter choose proper adjust gear4 to let the reading near the actual flow rate as far as possible After used the meter a period time the viscosity of testing liquid or temperature may change deviation and it is not same with the checkout deviation possibly To make up the deviation the following adjust gear list would be referenced Choosing the transmission ratio adjust gear can purchase from us
4. pump if on entry the loss of the pressure on the filter would increase adding negative pressure and more the out flowing liquid on turn of axes may lead increasing error In order to reduce the error the flange of the entry of the pump should make sure not seep gas 5 A filter should be stetted on the front of the meter limiting the atom over 0 2mm getting through and avoiding jam the conduit in this case the filter is subject to clear 6 The opposite valve should be stetted on front of the meter letting the liquid should flow on single direction so that stopping damage the counter 7 The advise as picture6 setting bypass and filter it could set on the level apeak or other pipelines from up to down down to up left to right or right to left all correct Blow meter Filter Valve 8 Using the meter the inside should be fully filled with liquid and the testing liquid should not contain gas or resulting in error on test 9 Before setting the pipeline on front of the meter should be cleared carefully Only the meter attaching with the pipeline the plug would be taken So that sundries can not enter 10 Beyond the maximum flow rate the attrition of the oval gear flow meter would increase with growing speed and the pressure loss will forcefully rise So it should be averted Under the minimum it can count but the error may increase and as the liquid viscosity at 10 centipoises showing on the meter the flow
5. OGM Series oval gear flow meter User manual Shanghai Cowell Machinery Co Ltd Content 1 Summarize 2 Working Principle 3 Main specification 4 Structure 5 Setting and Usage 6 Adjustment 7 Checking and arrangement of malfunction 1 Summarize LC Series oval gear flow meter the main type of positive displacement flow meters is used to measure pressure in the pipeline closed under full pipe flow of the fluid flow It has high accuracy reliability long life and wide range small pressure loss viscosity and good adaptation is essentially unregulated measuring temperature pressure change and ease of installation It is mainly used for measuring Petroleum Diesel Kerosene products of the cumulative flow It can also be used for other chemical solution except the corrosive agents measurement Direct Reading of the flowmeter accumulated fluid flow meters is equipped with a pair of oval gear switched from the measurement chamber sealed coupling a small caliber flowmeter high sensitivity magnetic coupling and technical institutions 2 Working Principle The liquid flow finished on the measuring room Under the liquid differential pressure effect between import and export there is a couple of oval gear on the on the measuring room and it rotate continually on the shaft measuring the amount of the rotation then know the liquid flow rate through the flow meter 3 Main specification
6. ear make a unusual sound 1 Flow rate is higher than standard Adjust it at the standard rate 5 Pointer reverse and counter 1 Direction of running liquid opposite to the Tear down and set it according to the marked reverse direction of the marked direction arrowhead 1 The flow rate lower Exchange smaller caliber 6 Higher than standard meter deviation and 2 Bypass leak Check bypass negative 3 Usage beyond the Adjust the gear according difference limited time oval gear to the change of deviation have more wear and tear 1 Liquid contain gas To avoid leaking on 7 Higher flange joint add a gas deviation and segregator on front of the positive meter difference 2 After check and the Correct the position To buy the adjust position of the counter is not at zero leading wrong read Of pointer when counter running gear from producer or take it to the factory 3 More difference between liquid viscosity and checking liquid viscosity Exchange the gear base on the change of deviation To buy the adjust gear from producer
7. rate at the beginning is about 1 of the full rate 11 Pruducing each of the meter is calibrated using No 7 machine oil at room temperature The viscosity of the oil is about 13 centipoises at normal temperature changing with the room temperature Theoretically the change of the testing liquid viscosity of the volumetric flow meter would not affect the measurement precision but actually because ofthe interstice between the inside of measure room and the oval gear the losing volume is changing with the liquid viscosity 12 At the use of measuring the high consistency liquid it should heated to reduce the viscosity generally and then flow on the pipeline The liquid in the meter cool and become thick at the meter stopped If turn on again it must be heated using the steam by heating the liquid at the outside After the liquid viscosity reduce the meter can work or the thick liquid may paste in and damage the part Do not allow the besom line steam through the surface to damage the meter 13 The temperature of tested liquid should not over the standard Over the standard the meter may lock and the change of the liquid temperature may affect to add deviation The increasing temperature may lead to add the volume of moon shape space and slow down the meter If the testing room and the oval gear are made of cast iron the add deviation is about 0 33 100 C If the testing room is made of cast iron and the oval gear is made of cast aluminum

User manual - cowellmac.com

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