BRONKHORST IN-FLOW Instruction Manual Download Page 32 | Manualshive

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APPENDIX 1

GAS CONVERSION TABLE

Doc. no.: 9.02.071

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Summary of Contents for IN-FLOW

Page 1: ...e instruments laboratory style IN FLOW Doc no 9 17 022V Date 12 01 2016 ATTENTION Please read this instruction manual carefully before installing and operating the instrument Not following the guidelines could result in personal injury and or damage to the equipment ...

Page 2: ...g of General instructions digital Mass Flow Pressure instruments laboratory style IN FLOW document nr 9 17 022 Operation instructions digital instruments document nr 9 17 023 Fieldbus interface description FLOW BUS interface document nr 9 17 024 PROFIBUS DP interface document nr 9 17 025 DeviceNet interface document nr 9 17 026 RS232 interface with FLOW BUS protocol document nr 9 17 027 Modbus int...

Page 3: ...riod may be repaired or replaced at no charge Repairs are normally warranteed for one year or the balance of the original warranty whichever is the longer See also paragraph 9 of the Conditions of sales The warranty includes all initial and latent defects random failures and undeterminable internal causes It excludes failures and damage caused by the customer such as contamination improper electri...

Page 4: ...ings according to the instructions of the supplier of the fittings Choose the mounting position according to the directions given in this manual Check the system for leaks before applying fluid pressure In systems with corrosive or reactive fluids purging with an inert gas is absolute necessary before use Complete purging after use with corrosive or reactive fluids is also required before exposing...

Page 5: ...30 minutes for best accuracy Your Mass Flow Pressure Meter Controller is now ready for operation Caution Operation via fieldbus is done by means of a flatconductor cable connected with the main PC board Although all functionality is possible by means of RS232 and the switch on top of the instrument it is important that care should be taken when removing the upper part of the housing ...

Page 6: ...BRONKHORST ...

Page 7: ...1 6 Conversion factors 17 1 6 1 Gas conversion factors by pass measurement 17 1 6 2 Gas Conversion Factors direct mass flow measurement CTA based 18 1 6 3 Liquid Conversion Factors 19 1 6 4 Software for conversion factor calculation 19 2 Installation 20 2 1 Receipt of equipment 20 2 2 Return shipment 20 2 3 Service 20 2 4 Mounting 21 2 5 In line filter 21 2 6 Fluid connections 21 2 7 Piping 22 2 8...

Page 8: ...es 29 4 6 2 Vary P valve 29 4 6 3 Pilot operated valve 29 4 6 4 Bellows valve 29 4 7 Calibration procedure 29 5 Digital instrument 30 6 Interface description 30 7 TROUBLESHOOTING 30 7 1 General 30 7 2 Troubleshooting summary general 31 Appendices 1 Gasconversion table 2 Dimensions digital cases 3 Enclosures if applicable ...

Page 9: ...ures from 100 mbar up to 400 bar depending on body rating either absolute pressure or gauge pressure and in the range 0 to 15 bar differential pressure too The pressure controller controls pressure with a very high accuracy and repeatability The controller is available in forward control P 600 series and backward control P 700 series The flow going through the pressure controller depends on up and...

Page 10: ...For electrical connection the instrument is equipped with a male 9 pin sub D connector The instrument is suited for dry indoor applications like laboratories CTA based LIQUI FLOW The CTA based LIQUI FLOW model for flow rates up to approximately 1000 g h For electrical connection the instrument is equipped with a male 9 pin sub D connector The instrument is suited for dry indoor applications like l...

Page 11: ...tion class This means that the valves are suited for dry indoor use This valve is equipped with a purge connector Industrial style For gases The solenoids of these valves have an IP65 ingress protection class This means that they are suited for light industrial outdoor use For liquids The solenoids of these valves have an IP65 ingress protection class This means that they are suited for light indu...

Page 12: ...with a stainless steel tube The heating power required to keep the temperature difference between the heater resistor and the sensing resistor at a constant level is proportional to the mass flow A different and unique heater current is produced for each value of the flow The measurement principle described is called Constant Temperature Anemometry CTA The transfer function between mass flow and o...

Page 13: ...tion between the liquid mass flow and the linear output signal can roughly be described with the equation Vsignal output signal K calibration constant m p signal c K V 2 cp specific heat heat conduction coefficient m mass flow 1 2 4 Pressure sensor The EL PRESS pressure sensor is formed by a piezoresistive bridge on the surface of a silicon crystal The sensor is mounted in a stainless steel constr...

Page 14: ...s 1 4 Kv value calculation This calculation method can be used to determine the Kv value of the main orifice of a control valve 1 4 1 For gases Determine desired p across valve p must be at least 20 of supply pressure or in closed loop systems of total pressure difference in loop If p is 20 50 of supply pressure use formula K T p p v vn n 514 2 undercritical If P is 50 100 of supply pressure use f...

Page 15: ...alve is available Diameter of orifice can be calculated or looked up in the table Diameter mm Kv Normally closed p max bard 0 10 0 14 0 20 0 30 0 37 0 50 0 70 1 00 1 73 x 10 4 3 39 x 10 4 6 93 x 10 4 1 56 x 10 3 2 37 x 10 3 4 33 x 10 3 8 48 x 10 3 1 73 x 10 2 10 10 10 10 10 10 10 10 For liquids having a dynamic viscosity 15 cP 100 cP the Kv value should be calculated according to K p v v 1000 Unit...

Page 16: ...r than 1250 ln min the main laminar flow device is used in combination with a capillary flow device arrangement in order to compensate for the non ideal transfer function of the main flow device In general 3 types of capillary tubes are available Small bore C type The following notes apply to this type of sensor These sensors have a pressure drop of approx 35 mbar The laminar flow device consists ...

Page 17: ...erature approx 50 C higher than the required temperature This factor is called cp cal The conversion factors for commonly used gases related to N2 at normal conditions are stated in the Gas Conversion Table in the appendix 1 Example Meter calibrated on N2 200 mln min Gas flow passing the meter is CO2 Output signal reads 80 0 Actual CO2 flow 80 0 0 74 1 00 59 2 so 59 2 100 200 118 4 mln min n means...

Page 18: ...ix Cmix 0 959 When the original meter has been calibrated on 500 mln min N2 100 means 500 00 1 959 0 480 mln min mixture When the original meter has been calibrated on 500 mln min Argon then 100 means 500 40 1 959 0 343 mln min gas mixture 1 6 2 Gas Conversion Factors direct mass flow measurement CTA based For CTA based gas flow sensors the general relationship between signal and mass flow is n m ...

Page 19: ...rmula consult Bronkhorst 2 CTA based LIQUI FLOW For the CTA based LIQUI FLOW liquid mass flow sensor the transfer function between the liquid mass flow and the linear output signal can roughly be described with the equation m p signal c K V 2 Vsignal output signal K calibration constant cp specific heat heat conduction coefficient m mass flow A conversion factor must be used if the liquid flow met...

Page 20: ...s fluids have been metered with the instrument This to enable the factory to take sufficient precautionary measures to safe guard the staff in their repair department Take proper care of packing if possible use the original packing box seal instrument in plastic etc All instruments must be dispatched with a completely filled in declaration on contamination form Instruments without this declaration...

Page 21: ...uld be absolutely free of dirt oil moisture and other particles it is recommended to install an in line filter upstream of the flowmeter controller and if backflow can occur a downstream filter is recommended too Be aware of the pressure drop caused by the filter On the inlet of some instruments a screen is placed to prevent foreign matter from entering the instrument and to maintain a good flowpa...

Page 22: ... controller so in this case 2 500 1 000 ln min 2 8 Electrical connections Bronkhorst recommends to use their standard cables These cables have the right connectors and if loose ends are used these will be marked to prevent wrong connection Hook up diagrams are enclosed in the back of this manual To comply with the IP classification it is necessary to follow the assemble guidelines of the connector...

Page 23: ...g the system to air It is preferred not to expose the system to air when working with these corrosive fluids 2 12 Seals Bronkhorst has gathered a material compatibility chart from a number of sources believed to be reliable However it is a general guide only Operating conditions may substantially change the accuracy of this guide Therefore there is no liability for damages accruing from the use of...

Page 24: ... Do not use unshielded wire terminals 2 For FLOW BUS S F TP data patch cable connection to RJ45 connectors follow the instructions of the supplier It is important to use shielded twisted pair cables and shielded RJ45 modular jack connectors 3 For PROFIBUS DP or DeviceNet data cable connections follow the instructions of the cable suppliers for the specific field bus system ...

Page 25: ...tton switch and the LED s on top of the instrument can be used for manual operation of some options The green LED will indicate in what mode the instrument is active The red LED will indicate error warning situations 3 2 Power and warm up Before switching on power check if all connections have been made according to the hook up diagram which belongs to the instrument It is recommended to turn on p...

Page 26: ...s on the type of instrument and settings Pressure sensors have a time constant of some milliseconds However the actual response is determined by the pneumatic response of the system which the pressure meter is part of 3 6 2 Controllers The dynamic response of a controller is factory set Standard settling time is defined as the time to reach the setpoint and stay within 2 of the initial setpoint Th...

Page 27: ...with special cable for reading changing parameters e g controller response or other fluid selection For FLOW BUS versions of the instruments a readout control module for digital instruments can be temporarily connected to the RJ45 modular jack plug 3 9 BUS digital operation Operation via fieldbus reduces the amount of cables to build a system of several instruments and offers more parameter values...

Page 28: ...ow sensor is constructed in such a way that for a change in range the laminar flow element can be removed It is not recommended for the user to disassemble the instrument other than for removing the laminar flow element for inspection or range changing only After replacing the laminar flow element it becomes necessary to recalibrate the flow meter When doing so proceed according to a suitable cali...

Page 29: ...sassembled and the orifice must be adjusted to the proper position Re assemble valve and repeat procedure if required 4 6 2 Vary P valve The vary P valve is designed to cope with extremely varying process conditions on either upstream or downstream side of the valve or a combination of these p can vary over a wide range The basic control valve is a direct operated solenoid control valve The design...

Page 30: ... recommended to remove the unit from the process line and check it without applying fluid supply pressure In case the unit is dirty this can be ascertained immediately by loosening the compression type couplings and if applicable the flange on the inlet side Bronkhorst does not recommend to open the housing but in case that the housing has to be opened it should be done with great care because the...

Page 31: ... meter with air or N2 Valve blocked contaminated 3c clean valve Valve internals damage swollen seat in plunger 3d replace plunger assembly and adjust valve or return Incorrect type of gas is used and or pressure diff pressure 3e try instrument on conditions for which it was designed Flow is gradually decreasing Condensation occurs withNH3 hydrocarbons such as C H C H 3 8 4 10 etc 4a decrease suppl...

Page 32: ...APPENDIX 1 GAS CONVERSION TABLE Doc no 9 02 071 ...

Page 33: ...11 ...

Page 34: ... ClCN C3H6 D2 4 125 2 376 2 743 1 919 0 1798 0 188 0 275 0 185 0 374 1 73 0 40 0 48 0 61 0 43 1 00 26 27 28 29 30 Diborane Dibromo difluoromethane Dichlorosilane Dimethylamine Dimethylpropane 2 2 B2H6 Br2CF2 SiH2Cl2 C2H6NH C5H12 1 248 9 361 4 506 2 011 3 219 0 577 0 17 0 17 0 417 0 462 0 43 0 20 0 41 0 37 0 21 31 32 33 34 35 Dimethylether Disilane Ethane Ethylene Ethene Ethylene oxide C2H6O Si2H6 ...

Page 35: ...0 0 436 0 424 0 246 0 239 0 249 0 36 0 52 1 41 0 97 1 00 79 80 81 82 83 Nitrogen dioxide Nitrogen trifluoride Nitrosyl chloride Nitrous oxide Oxygen NO2 NF3 NOCl N2O O2 2 053 3 182 2 984 1 978 1 429 0 204 0 194 0 17 0 221 0 222 0 74 0 50 0 61 0 71 0 98 84 85 86 87 88 Oxygen difluoride Ozone Pentane Perchlorylfluoride Perfluoropropane OF2 O3 C5H12 ClO3F C3F8 2 417 2 154 3 219 4 653 8 662 0 201 0 20...

Page 36: ...APPENDIX 2 dimensions digital cases ...

Page 37: ......

Page 38: ... assembly as drawn in the dimensional drawing Please note that the height increases when a contra connector is used Dimensions are in millimeters unless otherwise mentioned Dimensions subject to change without notice Tolerances 0 5 unless otherwise mentioned Doc Nr 7 05 445H Date 21 07 2015 26 26 26 26 25 47 86 86 47 86 18 47 86 5 47 5 87 5 36 36 36 100 73 5 73 5 100 73 5 100 12 12 12 15 1 5 ...

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