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Omega FMA 4000 Automobile Parts User Manual

1. 21 7 2 3 Gas Linearization Table 21 7 3 Analog output Calibration of 4000 Mass Flow 23 Fass MEET 24 7 3 2 Gas flow 0 5 analog output calibration 25 7 3 3 Gas flow 4 20 mA analog output calibration 25 8 RS485 85232 SOFTWARE INTERFACE 26 DI General 26 8 2 Commands Structure inner 26 8 3 ASCII Commands Set 28 9 5 34 91 Common L U rece renes 34 9 2 Troubleshooting Guide 35 9 3 Technical Assistance 37 10 CALIBRATION CONVERSIONS FROM REFERENCE GASES 37 APPENDIX OMEGA 4000 EEPROM 38 APPENDIX INTERNAL USER SELECTABLE GAS FACTOR TABLE INTERNAL K FACTORS entretenue 41 APPENDIX 11 GAS FACTOR TABLE 42 APPENDIX IV COMPONENT DIAGRAM ennt 46 APPENDIX DIMENSIONAL DRAWINGS 48 APPENDIX VI sss 50 TRADEMARKS Buna N is a registered trademark of DuPont Dow Elastomers Neoprene is a registered trademark of DuPont
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3. NTO Sensor un Sen un o Sensor o 4 4 S 17 co I lt 5 Sen SensorT o A 1 c Sen SensorT Sen c SensorT Sen Sensor SensorT SensorTb SensorT SensorTb SensorTbI 9 Flow SensorTbl SensorTbl SensorTbI O Flow D c 1 c 0 0 0 ort 0 0 Sensor Value 1 Sensor Val co D ES 2 D a 5 D co D gt p p Le rS 4 cle o 8 co Flow sor Value co SIT 10 Sensor Value 10 Flow floa uint Reserved Index 0 Must be 120 zero value Do not Alter Index 0 Must be 0 0 zero PFS Do not Alter 10 0 F S A D value from sensor counts Actual Flow in PFS 0 7 80 0 5 A D value counts Actual Flow in PFS 90 0 F S A D Actual Flow in PFS rom sensor 0 8 value from sensor counts 0 9 100 0 F S A D value from sensor counts Flow in PFS Should be 1 0 Do not Alter Note Values will be available for selected gas only 40 A
4. Shop online at omega com CEOMEGA www omega com e mail info omega com FMA 4000 Digital Mass Flow Meters omega com EOMEGA OMEGAnet Online Service Internet e mail www omega com info omega com USA ISO 9001 Certified Canada Servicing North America One Omega Drive Box 4047 Stamford CT 06907 0047 Tel 203 359 1660 FAX 203 359 7700 e mail info omega com 976 Bergar Laval Quebec H7L 5A1 Tel 514 856 6928 FAX 514 856 6886 e mail info omega ca For immediate technical or application assistance USA and Canada Mexico Benelux Czech Republic France Germany Austria United Kingdom ISO 9002 Certified Sales Service 1 800 826 6342 1 800 Customer Service 1 800 622 2378 1 800 622 BEST Engineering Service 1 800 872 9436 1 800 USA WHEN TELEX 996404 EASYLINK 62968934 CABLE OMEGA En ol 001 203 359 7803 e mail espanol omega com FAX 001 203 359 7807 info omega com mx Servicing Europe Postbus 8024 1180 LA Amstelveen The Netherlands Tel 31 0 20 3472121 FAX 31 0 20 6434643 Toll Free in Benelux 0800 0993344 e mail sales omegaeng nl Rud arm dy 1868 733 01 Karvin 8 Tel 420 0 59 6311899 FAX 420 0 59 6311114 Toll Free 0800 1 66342 e mail info omegashop cz 11 rue Jacques Cartier 78280 Guyancourt France Tel 33 0 1 61 37 29 00 FAX 33 0 1 30 57 54 27
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7. Memory Write command from the software interface commands set may be used to adjust sensor value in the linearization table see section 8 3 for complete software interface commands list Memory Read MR command can be used to read the current value of the index Assuming the FMA 4000 is configured with RS485 interface and has address 11 the following example will first read the existing value of Index 133 and then write a new adjusted value H1 MR 133 CR reads EEPROM address 133 11 133 3450 1 writes new sensor value 3450 counts in to the index 133 Once 100 ES calibration is completed the user can proceed with calibration for another 9 points of the linearization table by using the same approach EB Note It is recommended to use Omega supplied calibration and maintenance software for gas table calibration This software includes an automated calibration procedure which may radically simplify reading and writing for the EEPROM linearization table 7 3 Analog output Calibration of 4000 Mass Flow Meter FMA 4000 series Mass Flow Meters are equipped with AutoZero Reset calibrated 0 5 Vdc and 4 20 mA output signals The set push buon of the jumpers J7A J7B J7C on the printed circuit board is used to switch between 0 5 Vdc and 4 20 mA output signals Figure c 1 FMA 4000 configuration jumpers es 85485 TERMINAL RESISTOR
8. Kalrez is a registered trademark of DuPont Dow Elastomers Omega is a registered trademark of Omega Engineering Inc 1 UNPACKING THE 4000 MASS FLOW METER 1 1 Inspect Package for External Damage Your FMA 4000 Mass Flow Meter was carefully packed in a sturdy cardboard car ton with anti static cushioning materials to withstand shipping shock Upon receipt inspect the package for possible external damage In case of external damage to the package contact the shipping company immediately 1 2 Unpack the Mass Flow Meter Open the carton carefully from the top and inspect for any sign of concealed ship ping damage In addition to contacting the shipping carrier please forward a copy of any damage report to Omega directly When unpacking the instrument please make sure that you have all the items indicated on the Packing List Please report any shortages 1 3 Returning Merchandise for Repair Please contact an OMEGA customer service representative and request a Return Authorization Number AR It is mandatory that any equipment returned for servicing be purged and neutral ized of any dangerous contents including but not limited to toxic bacterially infec tious corrosive or radioactive substances No work shall be performed on a returned product unless the customer submits a fully executed signed SAFETY CERTIFICATE Please request form from the Service Manager 2 INSTALLATION 2 1 Primary Gas Con
9. Toll Free in France 0800 466 342 e mail sales omega fr Daimlerstrasse 26 D 75392 Deckenpfronn Germany Tel 49 0 7056 9398 0 FAX 49 0 7056 9398 29 Toll Free in Germany 0800 639 7678 e mail info omega de One Omega Drive River Bend Technology Centre Northbank Irlam Manchester M44 5BD United Kingdom Tel 44 0 161 777 6611 Toll Free in United Kingdom 0800 488 48 FAX 44 0 161 777 6622 e mail sales omega co uk It is the policy of OMEGA to comply with all worldwide safety and EMC EMI regulations that apply OMEGA is constantly pursuing certification of its products to the European New Approach Directives OMEGA will add the CE mark to every appropriate device upon certification The information contained in this document is believed to be correct but OMEGA Engineering Inc accepts no liability for any errors it contains and reserves the right to alter specifications without notice WARNING These products are not designed for use in and should not be used for patient connected applications TABLE OF CONTENTS 1 UNPACKING THE FMA 4000 MASS FLOW 1 1 1 Inspect Package for External 1 1 2 Unpack the Mass Flow 1 1 3 Returning Merchandise for Repair 1 2 INSTALLATION 1 21 Primary Gas Connections 1 2 2 Electrical Connections
10. 2126 560 9366 2o 138 Nitric Oxide NO 99 2328 1339 Octafluorocyclobutane Freon C318 Flow rates indicated is the maximum flow range of the Mass Flow meter being used 44 Densit 80 68 m 2 Tetrafluoroethane Forane 134A Trichlorofluoromethane Freon 11 1 1 2 Trichloro 1 2 2 Trifluoroethane Freon 113 CCLFCCIF 2991 4 32 45 APPENDIX IV COMPONENT DIAGRAM TOP COMPONENT SIDE nu m ni E a au Enn nn Pene Aug 09 2007 46 BOTTOM COMPONENT SIDE R H0000000000000000000 nuin EE 635 mm C36 Aug 09 2007 47 APPENDIX DIMENSIONAL DRAWINGS 4 425 _1125 4 882 Mounting Holes 6 32 FMA 4000 WITHOUT READOUT 48 Mounting 3 094 Holes 6 32 FMA 4000 WITH READOUT OPTION 49 WARRANTY DISCLAIMER OMEGA ENGINEERING INC warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase OMEGA s Warranty adds an additional one 1 month grace period to the normal one 1 year product warranty to cover handling and shipping time This ensures that OMEGA s customers receive maximum coverage on each product If the unit malfunctions it must be returned to the factory for evaluation OMEGA s Customer Service Department will
11. 3 2 2 1 Power Supply Connections 3 2 2 2 Output Signals Connections 3 2 2 3 Communication Parameters and Connections 4 3 PRINCIPLE OF 6 4 SPECIFICATIONS 7 5 OPERATING INSTRUCTIONS 9 51 Preparation and Warm Up 9 5 2 Swamping Condition 10 5 3 4000 Parameters Settings 11 5 3 1 Engineering Units Settings 11 5 3 2 Gas Table Settings 12 5 3 3 Totalizer bettings renier rre 12 5 3 4 Flow Alarm Settings 13 5 3 5 Relay Assignment Settings 14 5 3 6 Factors Settings 14 5 3 4 15 5 3 8 Self Diagnostic Alarm 17 5 4 Analog output Signals configuration 17 6 MAINTENANCE tette t dettes 18 6 1 Introduction 18 6 2 Path Cleaning 19 6 2 1 Restrictor Flow Element RFE 19 6 22 FMA LI e 19 7 CALIBRATION PROCEDURES 20 7 4 Calibration sasa wasqa 20 7 2 Gas Calibration of FMA 4000 Mass Flow 21 7 2 1 Connections and Initial Warm Up 21 7 2 2 ZERO Check Adjustment Adjustment
12. If the flow path is clogged proceed with steps below Do not attempt to disassemble the sensor If blockage of the sensor tube is not alle viated by flushing through with cleaning fluids please return meter for servicing A CAUTION DISASSEMBLY MAY COMPROMISE CURRENT CALIBRATION 6 2 1 Restrictor Flow Element RFE The Restrictor Flow Element RFE is a precision flow divider inside the trans ducer which splits the inlet gas flow by a preset amount to the sensor and main flow paths The particular RFE used in a given Mass Flow Meter depends on the gas and flow range of the instrument 6 2 2 FMA 4000 Model Unscrew the inlet compression fitting of meter Note that the Restrictor Flow Element RFE is connected to the inlet fitting Carefully disassemble the RFE from the inlet connection The 50 micron filter screen will now become visible Push the screen out through the inlet fitting Clean or replace each of the removed parts as necessary If alcohol is used for cleaning allow time for drying Inspect the flow path inside the transducer for any visible signs of contaminant If necessary flush the flow path through with alcohol Thoroughly dry the flow paths by flowing clean dry gas through Carefully re install the RFE and inlet fitting avoiding any twisting and deforming to the RFE Be sure that no dust has collected on the O ring seal NOTE OVER TIGHTENING WILL DEFORM AND RENDER THE RFE DEFECTIVE IT IS ADVISABLE THAT AT LEAS
13. Were the connector pinouts matched properly When interchanging with other manufacturers equipment cables and connectors must be carefully wired for cor rect pin configurations Is the pressure differential across the instrument sufficient 34 zero reading after 15 min warm up time and no flow condition Status LED indicator and LCD Display remains blank when unit is powered up No response when flow is introduced from analog outputs 0 5 Vdc or 4 20 mA LCD Display reading or and analog output 0 5 signal fluctuate in wide range during flow measurement LCD Display reading does correspond to the correct flow range but 0 5 output signal does not change always the same read ing or around zero LCD Display reading and 0 5 output voltage do correspond to the correct flow range but 4 20 mA output signal does not change always the same or reading around 4 0 mA Calibration is off more than 1 0 5 LCD Display reading is above maximum flow range and output volt age 0 5 Vdc signal is more than 5 0 Vdc when gas flows through the FMA 4000 9 2 Troubleshooting Guide CT Perform Auto Zero Procedure see section 5 3 6 Zero Calibration Embedded temperature has been changed Power supply is bad or polarity is reversed Measure voltage on pins 7 and 5 of the 15 pin D connector If voltage is out of specified range then replace power supply with a new
14. amp Thermistor M Calibrators amp Ice Point References M Recorders Controllers amp Process Monitors Infrared Pyrometers PRESSURE STRAIN AND FORCE M Transducers amp Strain Gages Load Cells amp Pressure Gages Displacement Transducers Instrumentation amp Accessories FLOW LEVEL Rotameters Gas Mass Flow Meter amp Flow Computers M Air Velocity Indicators Turbine Paddlewheel Systems M Totalizers amp Batch Controllers H CONDUCTIVITY pH Electrodes Testers amp Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators amp Pumps Industrial pH amp Conductivity Equipment DATA ACQUISITION Data Acquisition amp Engineering Software Communications Based Acquisition Systems Plug in Cards for Apple amp Compatibles Datalogging Systems Recorders Printers amp Plotters HEATERS Heating Cable Cartridge amp Strip Heaters Immersion amp Band Heaters Flexible Heaters Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL Metering amp Control Instrumentation M Refractometers Pumps amp Tubing Air Soil amp Water Monitors Industrial Water amp Wastewater Treatment pH Conductivity amp Dissolved Oxygen Instruments INNA NAN M 4651 0508
15. inlet pressure and 0 psig outlet pressure It is best to calibrate FMA 4000 transducers to actual operating condi tions Specific gas calibrations of non toxic and non corrosive gases are available for specific conditions Please contact your Omega for a price quotation It is recommended that a flow calibrator be used which has at least four times bet ter collective accuracy than that of the Mass Flow Meter to be calibrated Equipment required for calibration includes a flow calibration standard PC with available RS485 RS232 communication interface a certified high sensitivity multi meter for analog output calibration only an insulated plastic screwdriver a flow regulator for example metering needle valve installed upstream from the Mass Flow Meter and a pressure regulated source of dry filtered nitrogen gas or other suitable reference gas Using Omega supplied calibration and mainte nance software to simplify the calibration process is recommended Gas and ambient temperature as well as inlet and outlet pressure conditions should be set up in accordance with actual operating conditions 20 7 2 Gas Flow Calibration of 4000 Mass Flow Meter All adjustments in this section are made from the outside of the meter via digital communication interface between a PC terminal and FMA 4000 There is no need to disassemble any part of the instrument or perform internal PCB component potentiometers adjustment FMA 4000
16. For the FMA 4000 transducer with LCD option If the LCD diagnostic is activated the second line of the LCD will display the time remaining until the end of the warm up period Minutes Seconds format and will alternatively switch to Totalizer reading indication every 2 seconds F 50 0 L min WarmUp 2 39 Figure b 5 FMA 4000 Main Screen during Sensor Warm up period Note After 6 minutes of the initial powering of the FMA 4000 the transducer status LED will emit a constant GREEN light normal operation ready to measure For FMA 4000 with LCD option the screen will reflect flow and totalizer reading see Figure b 4 5 2 Swamping Condition If a flow of more than 10 above the maximum flow rate of the Mass Flow Meter is taking place a condition known as swamping may occur Readings of a swamped meter cannot be assumed to be either accurate or linear Flow must be restored to below 110 of maximum meter range Once flow rates are lowered to within calibrated range the swamping condition will end Operation of the meter above 110 of maximum calibrated flow may increase recovery time 10 5 3 4000 Parameters Settings 5 31 Engineering Units Settings The FMA 4000 Mass Flow Meter is capable of displaying flow rate with 23 different Engineering Units Digital interface commands see paragraph 8 3 ASCII Command Set FMA 4000 SOFTWARE INTERFACE COMMANDS are provided to get currently active Engineering
17. LCD display the product name the software version and revision of the EEP ROM table applicable for LCD option only OMEGA FMA 4000 485 S Ver1 4 Rev A0 Figure b 2 FMA 4000 first Banner Screen Within the next two seconds the RS485 network address the analog output set tings and currently selected gas calibration table will be displayed applicable for LCD option only Ad 11 Out 0 5 Gas 1 AIR Figure b 3 FMA 4000 second Banner Screen Note Actual content of the LCD screen may vary depending on the model and device configuration After two seconds the LSD display switches to the main screen with the following information Mass Flow reading in current engineering units upper line Tetalizer Volume reading in current volume or mass based engineering units lower line 50 0 L min T 75660 5 Ltr Figure b 4 FMA 4000 Main Screen 9 Note Allow the Digital Mass Flow Meter to warm up for MINIMUM of 6 minutes During initial powering of the FMA 4000 transducer the flow output signal will be indicating a higher than usual output This is an indication that the FMA 4000 transducer has not yet attained its minimum operating temperature This condition will automatically cancel within a few minutes and the transducer should eventu ally indicate zero Note During the first 6 minutes of the initial powering of the FMA 4000 transducer the status LED will emit CONSTANT UMBER light
18. Mass Flow Meters may be field recalibrated checked for the same range they were originally factory calibrated for When linearity adjustment is needed or flow range changes are being made proceed to step 7 2 3 Flow range changes may require a different Restrictor Flow Element RFE Consult Omega for more information 7 2 1 Connections and Initial Warm Up Power up the Mass Flow Meter for at least 15 minutes prior to commencing the calibration procedure Establish digital RS485 RS232 communication between PC communication terminal and the FMA 4000 Start Omega supplied calibra tion and maintenance software on the PC 7 2 2 ZERO Check Adjustment Using Omega supplied calibration and maintenance software open Back Door access Query BackDoor Open When software prompts with Warning click the YES button This will open the access to the rest of the Query menu Start Sensor Compensated Average reading Query Read SensorCompAverage This will display Device Sensor Average ADC counts With no flow conditions the sensor Average reading must be in the range 120 10 counts If it is not perform Auto Zero procedure see section 5 3 10 Zero Calibration 7 2 3 Gas Linearization Table Adjustment Note Your FMA 4000 Digital Mass Flow Meter was calibrated at the factory for the specified gas and full scale flow range see device s front label There is no need to adjust the gas linearization table unless linearity adjus
19. None RS485 communication interface connection The RS485 converter adapter must be configured for multidrop 2 wire half duplex mode The transmitter circuit must be enabled by TD or RTS depending on which is available on the converter adapter Settings for the receiver circuit should follow the selection made for the transmitter circuit in order to eliminate echo 85485 pin 8 of the 15 pin D connector TX 85485 R pin 15 of the 15 pin D connector RX RS485 GND if available pin 9 of the 15 pin D connector GND RS232 communication interface connection Crossover connection has to be established 5232 RX pin 2 on the DB9 connector pin 8 of the 15 pin D connector TX RS232 pin on the 089 connector pin 15 of the 15 pin D connector RX RS232 GND pin 5 on the 089 connector pin 9 of the 15 pin D connector GND Figure b 1 4000 15 PIN CONNECTOR CONFIGURATION PIN FMA 4000 FUNCTION Common Signal Ground For Pin 2 4 20 mA return 0 5 Vde or 4 20mA Flow Signal Output Relay No 2 Normally Open Contact Relay No 2 Common Contact Common Power Supply DC power for 11 to 26 Vdc Relay No 1 Common Contact Plus Power Supply DC power for 11 to 26 Vdc 8 85485 Optional RS232 TX 9 85232 Signal GND RS485 GND Op
20. The Status LED Sensor temperature is Make sure the ambient and gas indicator is rapidly too low temperatures are within specified range flashing with UMBER above 5 C color on off The Status LED Sensor temperature is Make sure the ambient and gas indicator is rapidly too high temperatures are within specified range flashing with RED color below 50 C on off The Status LED MCU temperature is too Disconnect power from the FMA 4000 indicator is rapidly high overload Make sure the ambient temperature is with flashing with RED and in specified range below 50 Let the UMBER colors device cool down for at least 15 minutes Apply power to the FMA 4000 and check status LED indication If overload condition will be indicated again the unit has to be returned to the factory for repair The Status LED Fatal Error EEPROM Cycle the power on the FMA 4000 If Status indicator is constantly or Auto Zero error LED still constantly on with RED light wait on with the RED light 6 minutes and start Auto Zero function see 5 3 7 Zero Calibration If after Zero Calibration the Fatal Error condition will be indicated again the unit has to be returned to the factory for repair 36 9 3 Technical Assistance OMEGA Engineering will provide technical assistance over the phone to quali fied repair personnel Please call our Flow Department at 800 872 9436 Ext 2298 Please have your Serial Number and Model Number ready
21. issue an Authorized Return AR number immediately upon phone or written request Upon examination by OMEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishandling improper interfacing operation outside of design limits improper repair or unauthorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion or current heat moisture or vibration improper specification misapplication misuse or other operating conditions outside of OMEGA s control Components which wear are not warranted including but not limited to con tact points fuses and triacs OMEGA is pleased to offer suggestions on the use of its various products However OMEGA nei ther assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA either verbal or written OMEGA warrants only that the parts manufactured by it will be as specified and free of defects OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESS OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PUR POSE ARE HEREBY DISCLAIME
22. on the fluid contacting wetted materials offered in the different models INLET AND OUTLET CONNECTIONS Model FMA 4000 standard 1 4 compression fittings Optional 1 8 or 3 8 compression fittings and 1 4 VCR fittings are available DISPLAY Optional local 2x16 characters LCD with adjustable backlight 2 lines of text CALIBRATION OPTIONS Standard is one 10 points NIST calibration Optional up to 9 additional calibrations may be ordered at additional charge CE COMPLIANCE EMC Compliance with 89 336 EEC as amended Emission Standard EN 55011 1991 Group 1 Class A Immunity Standard EN 55082 1 1992 FLOW RANGES TABLE 4000 LOW FLOW MASS FLOW cone cone stein 005 O 0tot nen w z owa 100 0 200 0 500 Flow rates are stated for Nitrogen at STP conditions 1 70 F 21 1 C at 1 atm For other gases use the factor as a multiplier from APPENDIX TABLE IV PRESSURE DROPS MAXIMUM PRESSURE DROP MODEL FLOW RATE PHA 4000 1275 MODEL WEIGHT SHIPPING WEIGHT FMA 4000 transmitter 2 20 Ibs 1 00 kg 3 70 Ibs 1 68 kg 5 OPERATING INSTRUCTIONS 5 1 Preparation and Warm Up It is assumed that the Mass Flow Meter has been correctly installed and thor oughly leak tested as described in section 2 Make sure the flow source is OFF When applying power to a flow meter within the first two seconds you will see on the
23. one If polarity is reversed reading is negative make correct connection PC board is defective Return FMA 4000 to factory for repair Output 0 5 signal Check external connections to pin 2 1 of pins 2 1 of the the D connector Make sure the load D connector is shorted resistance is more than 1000 Ohm on the GND or overloaded Output 0 5 schematic is burned out or damaged Return FMA 4000 to factory for repair Analog flow output scale and offset variable are corrupted Restore original EEPROM scale and offset variable or perform analog output recalibration see section 7 3 External loop is open or Check external connections to pins 2 and load resistance more 15 of the D connector Make sure the loop than 500 Ohm resistance is less than 500 Ohm Output 4 20 mA schematic is burned out or damaged Return FMA 4000 to factory for repair FMA 4000 has initial zero shift Shut off the flow of gas into the FMA 4000 ensure gas source is disconnected and no seepage or leak occurs into the meter Wait for 15 min with no flow condition and perform Auto Zero calibration Procedure see section 5 3 7 Zero Calibration Lower the flow through FMA 4000 within calibrated range or shut down the flow completely The swamping condition will end automatically Sensor under swamping conditions flow is more than 10 above maximum flow rate for particular FMA 4000 PC board is def
24. seb e seiddy NOILdIH9S10 5101924 CNVININOD uufxn ____ Uni pe unn mn rr C 8205 95 asuodsay uonfiay Hh n CCR XVLNAS GNVININOD INVININ09 euin Jad jou ae Jezi E10 au JO syun 9 910 1 297116101 pue se 10 aunseaw or 49 spun y 195 spun 1 s 33 21990 6 euj ui au Jo p 8 MIN 10 YIN jo 1n0 SI ssaippy eu 10 en eA Z jo 2 JOU si JO 9 pejqeue zou si 1000 5024 10 pueujuio JON NOHd13 OU ui ay 1944 0 1 G S8p09 10413 1 91991014 SassaJppe 8J0N 0 asneo ued Rouen asp 905 INOHd33 au enjeA payloads ay SAUM IUM xepu 9 e19uM lt 9n BA gt MIN 666 01 0000 66601 0000 au
25. when you call 10 CALIBRATION CONVERSIONS FROM REFERENCE GASES The calibration conversion incorporates the K factor The K factor is derived from gas density and coefficient of specific heat For diatomic gases en q xC where gas density gram liter coefficient of specific heat cal gram Note in the above relationship that d and Cp are usually chosen at the same con ditions standard normal or other If the flow range of a Mass Flow Meter remains unchanged a relative K factor is used to relate the calibration of the actual gas to the reference gas Q K mass flow rate of an actual gas sccm mass flow rate of a reference gas sccm K factor of an actual gas K factor of a reference gas For example if we want to know the flow rate of oxygen and wish to calibrate with nitrogen at 1000 SCCM the flow rate of oxygen is Q X 1000 X 0 9926 992 6 sccm where K relative K factor to reference gas oxygen to nitrogen ES Note If particular K factor is activated via digital interface the user does not need to perform any conversion All conversion computations will be performed internally by MCU 37 APPENDIX OMEGA FMA 4000 EEPROM Variables Rev AO 10 2 2007 Gas Independent Variables we m oran Tae PROTECTED D xau wam tons 7 DIN T7317 77777 T
26. 3 for information regarding communication parameters and cable connections 8 2 Commands Structure The structure of the command string lt Addr gt lt Cmd gt Arg1 Arg2 Arg3 Arg4 lt CR gt Where Start character Addr RS485 device address in the ASCII representation of hexadecimal 00 through FF valid Cmd The one or two character command from the table below 1 to Arg4 The command arguments from the table below Multiple arguments are comma delimited CR Carriage Return character Note Default address for all units is 11 Do not submit start character and two character hexadecimal device address for RS232 option Several examples of commands follow All assume that the FMA 4000 has been configured for address 18 12 hex on the RS485 bus 1 To get current calibration tables 12 G lt CR gt The FMA 4000 will reply 112 0 AIR lt CR gt Assuming Current Gas table is 0 calibrated for AIR 2 get current Alarm status 112 A R lt CR gt The FMA 4000 will reply 112 N lt CR gt Assuming no alarm conditions 3 To get a flow reading 112 F lt CR gt The 4000 will reply 112 50 0 lt gt Assuming the flow is at 50 FS 4 Set the high alarm limit to 85 of full scale flow rate 112 A H 85 0 lt CR gt The FMA 4000 will reply 112 AH85 0 lt CR gt 26 Note Address 00 is reserved for global addressing Do not assign the global address for any device When command with global address
27. D LIMITATION OF LIABILITY The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect to this order whether based on contract warranty negligence indemnification strict liability or otherwise shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on humans Should any Product s be used in or with any nuclear installation or activity medical application used on humans or misused in any way OMEGA assumes no responsibility as set forth in our basic WARRANTY DISCLAIMER language and additionally purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product s in such a manner RETURN REQUESTS INQUIRIES Direct all warranty and repair requests inquiries to the OMEGA Customer Service Department BEFORE RETURNING ANY PRODUCT S TO OMEGA PURCHASER MUST OBTAIN AN AUTHORIZED RETURN AR NUMBER FROM OMEGA S CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned AR number should then be marked on the outside of the return package and on any correspondence The purchaser is r
28. Figure 1 FMA 4000 Analog Output Configuration Jumpers J7 Jumpers 23 The FMA 4000 analog output calibration involves calculation and storing of the offset and span variables in the EEPROM for each available output The 0 5 Vdc output has only scale variable and 20 mA output has offset and scale variables The following is a list of the Gas independent variables used for analog output computation EB Note The analog output available on the FMA 4000 Digital Mass Flow Meter was calibrated at the factory for the specified gas and full scale flow range see the device s front label There is no need to perform analog output calibration unless the EEPROM IC was replaced or offset span adjustment is needed Any alteration of the analog output scaling variables in the Gas independent table will VOID calibration warranty supplied with instrument Note It is recommended to use the Omega supplied calibration and maintenance software for analog output calibration This software includes an automated calibration procedure which may radically simplify calculation of the offsets and spans variables and the reading and writing for the EEPROM table Index Name Description 25 AoutScaleV DAC 0 5 Analog Output Scale 27 AoutScale_mA DAC 4 20mA Analog Output Scale 28 AoutOffset mA DAC 4 20mA Analog Output Offset 7 3 1 Initial Setup Power up the Mass Flow Meter for at least 15 minutes prior to commencing the calibration procedure Ma
29. PPENDIX INTERNAL FACTORS CAUTION K Factors at best are only an approximation factors should not be used in applications that require accuracy better than 5 to 10 K Factor a C DENSITY ACTUAL GAS Relat 1 162 1 293 Allene Propadiene C3H4 1 787 p 1 782 5 an 5227 3025 7190 10 Boromine Pentaflouride BrF5 7 803 Carbon Tetrafluoride Freon 14 CF4 Chlorodifluoromethane Freon 22 CHCIF2 Chlorotrifluoromethane Freon 13 CCIF3 41 APPENDIX III GAS FACTOR TABLE FACTORS CAUTION K Factors at best are only an approximation factors should not be used in applications that require accuracy better than 5 to 10 TOR i TE at Acetylene C H 1 162 Air 1 298 Allene Propadiene 1 787 Ammonia NH 760 36 37 Argon lt 10 L min 1 782 Argon 1 gt 10 L min 1 205 1244 1 782 Arsine ASH 3 478 Boron Trichloride 5 227 Boron Trifluoride BF 3 025 Bromine Br 7 130 Boron Tribromide Br 11 18 Bromine PentaTrifluoride BrF 7 803 Bromine Trifluoride 6 108 38 26 1 3 Butadiene C Hs 2 413 Butane CyHio 2 593 1 Butene C H 2 503 2 Butene C H CIS 2 503 291 Bromotrifluoromethane Freon 13 B1 CBrF 3697 1113 6 644 2 Butene C Hs TRANS 291 374 2503 Carbon Dioxide CO 10 L min 2016 1 964 Carbon Dioxide CO 1 gt 10 L min 658 2016 1 964 Carbon Disulfide CS 3 397 Carbon Monoxide CO Carbonyl Sulfide COS 2 680 Chlor
30. T IN Alarm Mode E Enabled D Disabled Low Flow Alarm Setting FS 0 Disabled Totalizer Mode Enabled D Disabled Totalizer Volume in s updated every 6 min Start Totalizer at flow FS 0 Disabled Totalizer Action Limit Volume s 0 Disabled ones DPW value for Sensor Zero 0 1023 NOTES Klag DRC Lag Constant Do Not Alter Kgain Gain for DRC Lag Constant Do Not Alter Kgain Gain for DRC Lag Constant Do Not Alter Kgain Gain for DRC Lag Constant Do Not Alter Kgain Gain for DRC Lag Constant Do Not Alter EN Zero_T Resistance when last AutoZero was done 0 4095 count Flow Reading Averaging 0 1 2 Reserved 100 250 1000 ms Default 1 RollBack Back to conversion mode E D Reserved3 Reserved for Troubleshooting do not change EN 35 5 39 101 Calibration Table Gas Dependent Variables EE Gasldentifer FullScaleFlow char 20 Name of Gas If not calibrated Uncalibrated Full Scale Range in l min StdTemp Standard Temperature StdPressure Standard Pressure StdDensity Gas Standard Density CalibrationGas char 20 Name of Gas used for Calibration If not calibrated Uncalibrated Gas Parameters K factor relative to No floa 113 SensorTb un SensorTb
31. T ONE CALIBRATION POINT BE CHECKED AFTER RE INSTALLING THE INLET FITTING SEE SECTION 7 2 3 19 7 CALIBRATION PROCEDURES A NOTE REMOVAL OF THE FACTORY INSTALLED CALIBRATION SEALS AND OR ANY ADJUSTMENTS MADE TO THE METER AS DESCRIBED IN THIS SECTION WILL VOID ANY CALIBRATION WARRANTY APPLICABLE 7 1 Flow Calibration Omega Engineerings Flow Calibration Laboratory offers professional calibration support for Mass Flow Meters using precision calibrators under strictly controlled conditions NIST traceable calibrations are available Calibrations can also be per formed at customers site using available standards Factory calibrations are performed using NIST traceable precision volumetric cal ibrators incorporating liquid sealed frictionless actuators Generally calibrations are performed using dry nitrogen gas The calibration can then be corrected to the appropriate gas desired based on relative correction K factors shown the gas factor table see APPENDIX Ill A reference gas other than nitrogen may be used to better approximate the flow characteristics of cer tain gases This practice is recommended when a reference gas is found with ther modynamic properties similar to the actual gas under consideration The appro priate relative correction factor should be recalculated see section 9 It is standard practice to calibrate Mass Flow Meters with dry nitrogen gas at 70 0 F 21 1 C 20 psia 137 9 kPa absolute
32. Units set desired Engineering Units The following Engineering Units are available TABLE VI UNITS OF MEASUREMENT FLOW RATE TOTALIZER ENGINEERING ENGINEERING DESCRIPTION UNITS UNITS o remous s ume 3 os uw mr oe mtr per scone s mm 8 Gui meter per minute 17777 t ui teet por second ras per scone rams per minute s kara per second Kicoramspernour Pounds per second 11 Note Once Flow Unit of Measure is changed the Totalizer s Volume Mass based Unit of Measure will be changed automatically 5 3 2 Gas Table Settings The FMA 4000 Mass Flow Meter is capable of storing calibration data for up to 10 different gases Digital interface commands are provided to get currently active Gas Table number and Gas name set desired Gas Table Note By default the FMA 4000 is shipped with at least one valid calibration table unless optional additional calibrations were ordered If instead of the valid Gas name for example NITROGEN the LCD screen or digital interface displays Gas designator as Uncalibrated then the user has chosen the Gas Table which was not calibrated Using an Uncalibrated Gas Table will result in erroneous reading 5 3 3 Totalizer S
33. better FLOW RESPONSE TIME 1000ms time constant approximately 2 seconds to within 2 of set flow rate for 25 to 100 of full scale flow MAXIMUM GAS PRESSURE 500 psig 3447 kPa gauge MAXIMUM PRESSURE DROP 0 18 PSID at 10 L min flow See Table IV for pressure drops associated with various models and flow rates GAS AND AMBIENT TEMPERATURE 41 F to 122 F 5 C to 50 C RELATIVE GAS HUMIDITY Up to 70 LEAK INTEGRITY 1 x 10 sccs He maximum to the outside environment ATTITUDE SENSITIVITY Incremental deviation of up to 1 from stated accuracy after re Zeroing OUTPUT SIGNALS Linear 0 5 3000 ohms min load impedance Linear 4 20 mA 500 ohms maximum loop resistance Maximum noise 20mV peak to peak for 0 5 output TRANSDUCER INPUT POWER 11 to 26 Vdc 100 mV maximum peak to peak output noise Power consumption 12Vdc 200 mA maximum 24Vdc 100 mA maximum Circuit board have built in polarity reversal protection 300mA resettable fuse provide power input protection WETTED MATERIALS Anodized aluminum brass 316 stainless steel 416 stainless steel FKM O rings BUNA N NEOPRENE or KALREZ O rings are optional 7 A CAUTION Omega makes no expressed or implied guarantees of corrosion resistance of mass flow meters as pertains to different flow media reacting with components of meters It is the customers sole responsibility to select the model suitable for a particular gas based
34. e c 1 FMA 4000 configuration jumpers Note In order to locally Reset Totalizer the reset push button must be pressed during power up sequence The following sequence is recommended 1 Disconnect FMA 4000 from the power 2 Press maintenance push button do not release 3 Apply power to the FMA 4000 while holding down the maintenance push button 4 Release maintenance push button after 6 seconds For FMA 4000 with optional LCD when FMA 4000 Main Screen appears see Figure b 4 5 3 4 Flow Alarm Settings FMA 4000 provides the user with a flexible alarm warning system that monitors the Gas Flow for conditions that fall outside configurable limits as well as visual feedback for the user via the status LED and LCD only for devices with LCD option or via a Relay contact closure The flow alarm has several attributes which may be configured by the user via a digital interface These attributes control the conditions which cause the alarm to occur and to specify actions to be taken when the flow rate is outside the speci fied conditions Mode Enable Disable Allows the user to Enable Disable Flow Alarm Low Alarm The value of the monitored Flow in F S below which is considered an alarm condition Note The value of the Low alarm must be less than the value of the High Alarm High Alarm The value of the monitored Flow in F S above which is considered an alarm condition Note The value of the High alarm mu
35. e of 0 to 4095 There are 11 elements in the table so the data should be obtained at an increment of 10 0 of full scale 0 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 and 100 0 5 Note Do not alter memory index 113 must be 120 counts 114 must be 0 0 These numbers represent zero flow calibration points and should not be changed If a new gas table is going to be created it is recommended to start calibration from 100 full scale If only linearity adjustment is required calibration can be started in any intermediate portion of the gas table Using the flow regulator adjust the flow rate to 100 of full scale flow Check the flow rate indicated against the flow calibrator Observe the flow reading on the FMA 4000 If the difference between calibrator and FMA 4000 flow reading is more than 0 5 F S make a correction in the sensor reading in the correspon ding position of the linearization table see Index 133 If the FMA 4000 flow reading is more than the calibrator reading the number of counts in the index 133 must be decreased If the FMA 4000 flow reading is less than the calibrator reading the number of counts in the index 133 must be increased Once Index 133 is adjusted with a new value check the FMA 4000 flow rate against the calibrator and if required perform additional adjustments for Index 133 22 If a simple communication terminal is used for communication with the FMA 4000 then MW
36. ective Return FMA 4000 to factory for repair 35 Gas flows through the The gas flow is too low Check maximum flow range on transducer s FMA 4000 but LCD for particular model of front panel and make required flow Display reading and the FMA 4000 adjustment output voltage 0 5 signal do not respond to flow FMA 4000 models Unscrew the inlet compression fitting of the RFE is not connected meter and reinstall RFE see section 6 2 2 properly to the inlet NOTE Calibration accuracy can be affected fitting Sensor or PC board Return FMA 4000 to factory for repair defective Gas does not flow Filter screen obstructed Flush clean or disassemble to remove through the FMA 4000 impediments or replace the filter screen with inlet pressure see section 6 2 applied to the inlet fitting LCD Display NOTE Calibration accuracy can be affected reading and output voltage 0 5 Vdc signal show zero flow 10 Gas flows through the Direction of the gas Check the direction of gas flow as indicated FMA 4000 output flow is reversed by the arrow on the front of the meter and voltage 0 5 Vdc signal make required reconnection in the does not respond to installation flow reading near 1mV FMA 4000 is connected Locate and correct gas leak in the system in the installation with If FMA 4000 has internal leak return it to back pressure factory for repair conditions and gas leak exist in the system
37. erforming Zero Calibration make sure the device is powered up for at least 15 minutes and absolutely no flow condition is established Shut off the flow of gas into the Digital Mass Flow Meter To ensure that no seep age or leak occurs into the meter it is good practice to temporarily disconnect the gas source The Auto Zero may be initiated via digital communication interface or locally by pressing the maintenance push button which is located on the right side of the flow meter inside the maintenance window above the 15 pin D connector see Figure c 1 FMA 4000 configuration jumpers Note The same maintenance push button is used for Auto Zero initiation and Totalizer reset The internal diagnostic algorithm will prevent initiating Auto Zero function via the maintenance push button before the 6 minutes sensor warm up period has elapsed To start Auto Zero locally press the maintenance push button The status LED will flash not periodically with the RED light On the FMA 4000 with optional LCD the following screen will appear 15 AUTOZERO IS Figure b 6 FMA 4000 Screen in the beginning of Auto Zero procedure The Auto Zero procedure normally takes 1 2 minutes during which time the DP Zero counts and the Sensor reading changes approximately every 3 to 6 seconds AUTOZERO IS ON S 405 DP 512 Figure b 7 FMA 4000 during the Auto Zero procedure The nominal value for a fully balanced sensor is 120 Counts I
38. esponsible for shipping charges freight insurance and proper packaging to prevent breakage in transit FOR WARRANTY RETURNS please have FOR NON WARRANTY REPAIRS consult OMEGA the following information available BEFORE for current repair charges Have the following contacting OMEGA information available BEFORE contacting OMEGA 1 Purchase Order number under which 1 Purchase Order number to cover the the product was PURCHASED COST of the repair 2 Model and serial number of the product 2 Model and serial number of the under warranty and product and 3 Repair instructions and or specific 3 Repair instructions and or specific problems problems relative to the product relative to the product OMEGA s policy is to make running changes not model changes whenever an improvement is possible This affords our customers the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC Copyright 2001 OMEGA ENGINEERING INC rights reserved This document may not be copied photo copied reproduced translated or reduced to any electronic medium or machine readable form in whole or in part without the prior written consent of OMEGA ENGINEERING INC 50 Where Do I Everything Need for Process Measurement and Control OMEGA Of Course Shop online at www omega com TEMPERATURE Thermocouple RTD amp Thermistor Probes Connectors Panels amp Assemblies Wire Thermocouple RTD
39. ettings The total volume of the gas is calculated by integrating the actual gas flow rate with respect to the time Digital interface commands are provided to reset the totalizer to ZERO start the totalizer at a preset flow assign action at a preset total volume start stop enable disable totalizing the flow read totalizer via digital interface The Totalizer has several attributes which may be configured by the user These attributes control the conditions which cause the Totalizer to start integrat ing the gas flow and also to specify actions to be taken when the Total Volume is outside the specified limit Note Before enabling the Totalizer ensure that all totalizer settings are configured properly Totalizer Start values have to be entered in F S engineering unit The Totalizer will not totalize until the flow rate becomes equal to or more than the Totalizer Start value Totalizer Stop values must be entered in currently active volume mass based engineering units If the Totalizer Stop at preset total volume feature is not required then set Totalizer Stop value to zero Totalizer action conditions become true when the totalizer reading and preset Stop at Total volumes are equal 12 Local maintenance push button is available for manual Totalizer reset on the field The maintenance push button is located on the right side of the flow meter inside the maintenance window above the 15 pin D connector see Figur
40. f the FMA 4000 s digital signal processor was able to adjust the Sensor reading within 120 10 counts then Auto Zero is considered successful The status LED will return to a constant GREEN light and the screen below will appear AutoZero is Done S 122 DP 544 Figure b 7 FMA 4000 during the Auto Zero procedure Note The actual value of the Sensor and DP counts will vary for each FMA 4000 If the device was unable to adjust the Sensor reading to within 120 10 counts then Auto Zero is considered as unsuccessful The constant RED light will appear on the status LED The user will be prompted with the AutoZero ERROR screen Note For FMA 4000 with RS232 option all Auto Zero status info available via digital communication interface 16 5 3 8 Self Diagnostic Alarm FMA 4000 series Mass Flow Meters are equipped with a self diagnostic alarm which is available via multicolor LED digital interface and on screen indication for devices with optional LCD The following diagnostic events are supported NUMBER DIAGNOSTIC LED COLOR PRIORITY ALARM DESCRIPTION AND PATTERN LEVEL Auto Zero procedure is running Not periodically flashing RED FATAL ERROR reset or maintenance service is required for Constant RED return in to the normal operation CPU Temperature too high Electronics Overheating Sensor in the warm up stage first 6 minutes after power up sequence normal operation no critical diagnostic e
41. fied value The user can configure each Relay action from 6 different options No Action Totalizer gt Limit High Flow Alarm Low Flow Alarm Range between H amp L Manual Enabled M No assignment relay is not assigned to any events and not energized Totalizer reached preset limit volume High Flow Alarm condition Low Flow Alarm condition Range between High and Low Flow Alarm condition Activated regardless of the Alarm and Totalizer conditions N T H L R SSS SS ZT 5 3 6 Factors Settings Conversion factors relative to Nitrogen for up to 36 gases are stored in the FMA 4000 see APPENDIX Il In addition provision is made for a user defined version factor Conversion factors may be applied to any of the ten gas calibra tions via digital interface commands 14 The available Factor settings Disabled K 1 e Internal Index The index 0 35 from internal K factor table see APPENDIX II e User Defined User defined conversion factor Note The conversion factors will not be applied for F S engineering unit 5 3 7 Zero Calibration The FMA 4000 includes an auto zero function that when activated automatical ly adjusts the mass flow sensor to read zero The initial zero adjustment for your FMA 4000 was performed at the factory It is not required to perform zero calibra tion unless the device has zero reading offset with no flow conditions Note Before p
42. ine Cl 36 114 3 163 Chlorine Trifluoride CIF 4 125 Chlorodifluoromethane Freon 22 CHCIF 3 858 Chloroform CHCl 5 326 Chloropentafluoroethane Freon 115 C CIF 6 892 Chlorotrifluromethane Freon 13 CCIF 4 660 CyanogenC N 2 322 CyanogenChloride CICN 2 742 Cyclopropane C H 1 877 Flow rates indicated is the maximum flow range of the Mass Flow meter being used 42 17 Dian 467 508 Dibromodituoromatnane 5 9362 5395 1592 Density ACTUAL GAS CRE 1 235 Cp 508 15 5 758 4 506 Dichlorotetrafluoroethane Freon 114 C CLF 7 626 Xx Dimethylamine 2 011 2055 3219 1 342 2 055 2 413 287 xs 1 965 1 695 3 127 Helium He lt 50 L min 1 454 1 241 1786 Helium 1 gt 50 L min 2 43 1 241 1786 Helium He 2 10 50 L min 2 05 1 241 1786 Hexafluoroethane C F Freon 116 2421 1834 6 157 1792 3968 3 845 Hydrogen H 1 10 100 L 1 0106 3 419 0899 Hydrogen 2 gt 10 100 L 1 35 3 419 0899 Hydrogen H5 3 5100 L 1 9 3 419 0899 Flow rates indicated is the maximum flow range of the Mass Flow meter being used 43 T 3610 1527 1206 895 6 5 707 3 613 Hydrogen Sulfide HS 80 2397 1 520 3 593 2 508 3 739 75 5328 7175 5843 1 429 Methane CH lt 10 L min 5 Methane CH 1 gt 10 L min K Mehano 1787 4 236 2 253 ide 3 ety Forde Fy sm 15
43. is sent all devices on the RS485 bus execute the command but do not reply with an acknowledge message The global address can be used to change RS485 address for a particular device with unknown address 1 Make sure only one device which address must be changed is connected to the RS485 network 2 Type the memory write command with global address 00 MW 7 XX CR where XX the new hexadecimal address can be 01 FF After assigning the new address a device will accept commands with the new address Note Do not assign the same RS485 address for two or more devices on the same RS485 bus If two or more devices with the same address are connected to the one RS485 network a communication collision will take place on the bus and communication errors will occur 27 ASCII Commands Set lt 889 69 09 aule 889 69 09 pajqeua 191 3 511015 137 109119 6 0 0 3 6 1 0 0 0 spun jua11n9 enjoy lt an gt 1 pea 9 ON ZN jo zuana 1NIWN9YY ON 0 erqeuo CN 01 ejqeuo 3 ayy Jo 5 1 pea INSINNDYV ON sabessay onsouDelg yx 091 aiqesip 59 59 onsouDelg yx 091 3 jo euim 1e
44. ke sure absolutely no flow takes place through the meter Establish digital RS485 RS232 communication between PC communi cation terminal and FMA 4000 The commands provided below assume that cal ibration will be performed manually w o supplied calibration and main tenance software and the device has RS485 address 11 If Omega supplied cal ibration and maintenance software is used skip the next section and follow the software prompts 24 Enter Backdoor mode by typing 111 MW 1000 1 CR Unit will respond with 11 BackDoorEnabled Y Disable DAC update by typing 11 WRITE 4 D CR Unit will respond with 111 DisableUpdate D 7 3 2 Gas flow 0 5 analog output calibration Install jumpers 7 J7B and J7C the PC board for 0 5 output see Table Connect a certified high sensitivity multi meter set for the voltage measurement to the pins 2 and 1 of the 15 pins D connector Write 4000 counts to the DAC channel 1 11 WRITE 1 4000 CR Read voltage with the meter and calculate AoutScaleV 20000 Reading V Save FlowOutScaleV in to the EEPROM H1 MW 25 X CR Where X the calculated AoutScaleV value 7 3 3 Gas flow 4 20 mA analog output calibration Ao Install jumpers J7A J7B and J7C on the PC board for 4 20 mA output see Table VI Connect a certified high sensitivity multi meter set for the current measurement to pins 2 and 1 of the 15 pins D connect
45. le memory that stores all hard ware specific variables and up to 10 different calibration tables The flow rate can be displayed in 23 different volumetric or mass flow engineering units Flow meter parameters and functions can be programmed remotely via the RS485 RS232 optional interface FMA 4000 flow meters support various functions including programmable flow totalizer low high or range flow alarm automatic zero adjust ment activated via local button or communication interface 2 programmable SPDT relays output 0 5 4 20 mA analog outputs jumper selectable self diagnostic alarm 36 internal and user defined K factor Optional local 2x16 LCD readout with adjustable back light provides flow rate and total volume reading in currently selected engineering units and diagnostic events indication 4 SPECIFICATIONS FLOW MEDIUM Please note that FMA 4000 Mass Flow Meters are designed to work only with clean gases Never try to measure flow rates of liquids with any FMA 4000 CALIBRATIONS Performed at standard conditions 14 7 psia 101 4 kPa and 70 F 21 1 C unless otherwise requested or stated ENVIRONMENTAL PER IEC 664 Installation Level 11 Pollution Degree II FLOW ACCURACY INCLUDING LINEARITY 1 of FS at calibration temperature and pressure REPEATABILITY 0 15 of full scale FLOW TEMPERATURE COEFFICIENT 0 15 of full scale C or better FLOW PRESSURE COEFFICIENT 0 01 of full scale psi 6 895 kPa or
46. low Meter is only used with clean filtered gases Liquids may not be metered Since the RTD sensor consists in part of a small capillary stainless steel tube it is prone to occlusion due to impediments or gas crystallization Other flow passages are also easily obstructed Therefore great care must be exercised to avoid the introduction of any potential flow impediment To protect the instrument a 50 micron FMA 4000 filter is built into the inlet of the flow transducer The filter screen and the flow paths may require occasional cleaning as described below There is no other recommended mainte nance required It is good practice however to keep the meter away from vibra tion hot or corrosive environments and excessive RF or magnetic interference If periodic calibrations are required they should be performed by qualified per sonnel and calibrating instruments as described in section 7 It is recommended that units are returned to Omega for repair service and calibration CAUTION TO PROTECT SERVICING PERSONNEL IT 15 MANDATORY THAT ANY INSTRUMENT BEING SERVICED IS COMPLETELY PURGED AND NEUTRALIZED OF TOXIC BACTERIOLOGICALLY INFECTED CORROSIVE OR RADIOACTIVE CONTENTS 18 6 2 Flow Path Cleaning Before attempting any disassembly of the unit for cleaning try inspecting the flow paths by looking into the inlet and outlet ends of the meter for any debris that may be clogging the flow through the meter Remove debris as necessary
47. nections Please note that the FMA 4000 Mass Flow Meter will not operate with liquids Only clean gases are allowed to be introduced into the instrument If gases are con taminated they must be filtered to prevent the introduction of impediments into the sensor A CAUTION FMA 4000 TRANSDUCERS SHOULD NOT BE USED FOR MONITORING OXYGEN GAS UNLESS SPECIFICALLY CLEANED AND PREPARED FOR SUCH APPLICATION For more information contact Omeg Attitude limit of the Mass Flow Meter is 15 from calibration position standard calibration is in horizontal position This means that the gas flow path of the Flow Meter must be within this limit in order to maintain the original calibration accura cy Should there be need for a different orientation of the meter re calibration may be necessary It is also preferable to install the FMA 4000 transducer in a stable environment free of frequent and sudden temperature changes high moisture and drafts Prior to connecting gas lines inspect all parts of the piping system including fer rules and fittings for dust or other contaminant s When connecting the gas system to be monitored be sure to observe the direc tion of gas flow as indicated by the arrow on the front of the meter Insert tubing into the compression fittings until the ends of the properly sized tub ing home flush against the shoulders of the fittings Compression fittings are to be tightened to one and one quarter turns according to
48. ondo dn 310N lt gt 1821 2101 MO 0192 049594 7 au JO uonoe pue sies 1 71110 XY uxg TX HXd DE NXd snjejs peau jenue IN 4 Wed JO WI MOI 1 10 H lt 1971210 deu 10 uoyoe ou N 2 Hed 10 any 8410994 z ue Aq peuioeds y 168 10 lluq 1 f en m L nm 5 rere INN XVLNAS INVININ09 GNVININOD 10 984 Y NJLA 08 0 x pul N ia 949M lt gt xepu YS SEM lt se gt lt xapu gt y lt seg gt lt an en gt y __ d 0001 0 10126 059 109 nien 20308 95 195 ejqeua GE 0 x pul seg 40 9eJ y 195 jqeu 14615 101924 paligads 195 f 10128 XVLNAS INVININ09 yenuew au 510108 20 9 au JO 151 995 94 9 JOU S80p 310 uomelqi eo seb feud 29 95 au 01 10798 01994109
49. or Write 4000 counts to the DAC channel 1 1 WRITE 1 4000 CR Read current with the meter and calculate AoutScale mA Se Reading mA Write zero counts to the DAC channel 1 111 WRITE 1 0CR Read offset current with the meter and calculate AoutOffset mA FlowOutScale mA Offset Reading mA Save AoutScale mA in to the EEPROM H1 MW 27 Y CR Save AoutOffset mA in to the EEPROM 11 MW 28 Z CR Where Y the calculated AoutScale mA value Z the calculated AoutOffset mA value ES Note When done with the analog output calibration make sure the DAC update is enabled and the BackDoor is closed see command below 25 Enable DAC update by typing 111 4 Unit will respond with 11 DisableUpdate Close BackDoor access by typing H1 MW 1000 0 CR Unit will respond with 11 BackDoorEnabled N 8 RS485 RS232 SOFTWARE INTERFACE COMMANDS 8 1 General The standard FMA 4000 comes with an RS485 interface For the optional RS232 interface the start character and two hexadecimal characters for the address must be omitted The protocol described below allows for communications with the unit using either a custom software program or a dumb terminal All values are sent as printable ASCII characters For RS485 interface the start character is always The command string is terminated with a carriage return line feeds are automatically stripped out by the FMA 4000 See section 2 2
50. quipment 3 PRINCIPLE OF OPERATION The stream of gas entering the Mass Flow transducer is split by shunting a small portion of the flow through a capillary stainless steel sensor tube The remainder of the gas flows through the primary flow conduit The geometry of the primary con duit and the sensor tube are designed to ensure laminar flow in each branch According to principles of fluid dynamics the flow rates of a gas in the two laminar flow conduits are proportional to one another Therefore the flow rates measured in the sensor tube are directly proportional to the total flow through the transducer In order to sense the flow in the sensor tube heat flux is introduced at two sec tions of the sensor tube by means of precision wound heater sensor coils Heat is transferred through the thin wall of the sensor tube to the gas flowing inside As gas flow takes place heat is carried by the gas stream from the upstream coil to the downstream coil windings The resultant temperature dependent resistance differential is detected by the electronic control circuit The measured temperature gradient at the sensor windings is linearly proportional to the instantaneous rate of flow taking place An output signal is generated that is a function of the amount of heat carried by the gases to indicate mass molecular based flow rates Additionally the FMA 4000 Mass Flow Meter incorporates a Precision Analog Microcontroller ARM7TDMI MCU and non volati
51. s device Be sure to check if the wiring and the polarity of the power supply is correct before turning the power ON Wiring error may cause damage or faulty operation FMA 4000 Mass Flow Meters are equipped with either calibrated 0 5 or calibrat ed 4 20 mA output signals jumper selectable This linear output signal repre sents 0 100 of the flow meter s full scale range A WARNING The 4 20 mA current loop output is self powered non isolated Do NOT connect an external voltage source to the output signals Flow 0 5 VDC or 4 20 mA output signal connection Plus pin 2 of the 15 pin D connector Minus pin 1 of the 15 pin D connector To eliminate the possibility of noise interference use a separate cable entry for the DC power and signal lines 2 2 3 Communication Parameters and Connections The digital interface operates via RS485 optional RS232 and provides access to applicable internal data including flow CPU temperature reading auto zero total izer and alarm settings gas table conversion factors and engineering units selec tion dynamic response compensation and linearization table adjustment Communication Settings for RS485 RS232 communication interface Baud 9600 baud Stop bit 1 Data bits 8 Flow Control
52. st be more than the value of the Low Alarm Action Delay The time in seconds that the Flow rate value must remain above the high limit or below the low limit before an alarm condition is indicated Valid settings are in the range of 0 to 3600 seconds 13 Latch Mode Controls Latch feature when Relays assigned to Alarm event Following settings are available 0 Latch feature is disabled for both relays 1 Latch feature is enabled for Relay 1 and disabled for Relay 2 2 Latch feature is enabled for Relay 2 and disabled for Relay 1 3 Latch feature is enabled for both relays Note If the alarm condition is detected and the Relay is assigned to Alarm event the corresponding Relay will be energized Note By default flow alarm is non latching That means the alarm is indicated only while the monitored value exceeds the specified conditions If Relay is assigned to the Alarm event in some cases the Alarm Latch feature may be desirable The current Flow Alarm settings and status are available via digital interface see paragraph 8 3 ASCII Command Set FMA 4000 SOFTWARE INTERFACE COM MANDS 5 3 5 Relay Assignment Settings Two sets of dry contact relay outputs are provided to actuate user supplied equip ment These are programmable via digital interface such that the relays can be made to switch when a specified event occurs e g when a low or high flow alarm limit is exceeded or when the totalizer reaches a speci
53. the manufacturer s instruc tions Avoid over tightening which will seriously damage the Restrictor Flow Elements RFE s A CAUTION For FMA 4000 model the maximum pressure in the gas line should not exceed 500 PSIA 34 47 bars Applying pressure above 500 PSIA 34 47 bars will seriously damage the flow sensor FMA 4000 transducers are supplied with either standard 1 4 inch or optional 1 8 inch inlet and outlet compression fittings which should NOT be removed unless the meter is being cleaned or calibrated for a new flow range Using a Helium Leak Detector or other equivalent method perform a thorough leak test of the entire system All FMA 4000 s are checked prior to shipment for leakage within stated limits See specifications in this manual 2 2 Electrical Connections FMA 4000 is supplied with a 15 connector Pin diagram is presented in Figure b 1 2 2 1 Power Supply Connections The power supply requirements for FMA 4000 transducers are 11 to 26 Vdc unipolar power supply DC Power pin 7 of the 15 pin D connector DC Power pin 5 of the 15 pin D connector A CAUTION Do not apply power voltage above 26Vdc Doing so will cause FMA 4000 damage or faulty operation 2 2 2 Output Signals Connections A CAUTION When connecting the load to the output terminals do not exceed the rated values shown in the specifications Failure to do so might cause damage to thi
54. tional 10 Do not connect Test Maintenance terminal 11 Relay No 2 Normally Closed Contact 12 Relay No 1 Normally Open Contact 13 Relay No 1 Normally Closed Contact 14 Do not connect Test Maintenance terminal 15 85485 Optional RS232 Shield Chassis Ground J 0000000 O O O O O O O O N IMPORTANT NOTES Generally D Connector numbering patterns are standardized There are how ever some connectors with nonconforming patterns and the numbering sequence on your mating connector may or may not coincide with the numbering sequence shown in our pin configuration table above It is imperative that you match the appropriate wires in accordance with the correct sequence regardless of the particular numbers displayed on the mating connector A Make sure power is OFF when connecting or disconnecting any cables in the system The and power inputs are each protected by a 300mA M medium time lag resettable fuse If a shorting condition or polarity reversal occurs the fuse will cut power to the flow transducer circuit Disconnect the power to the unit remove the faulty condition and reconnect the power The fuse will reset once the faulty con dition has been removed DC Power cable length may not exceed 9 5 feet 3 meters Use of the FMA 4000 flow transducer in a manner other than that spec ified in this manual or in writing from Omega may impair the protection provided by the e
55. tment is needed flow range has to be changed or new additional calibration is required Any alteration of the gas linearization table will VOID calibration warranty supplied with instrument 21 Gas flow calibration parameters separately stored in the Gas Dependent tion of the EEPROM memory for each of 10 calibration tables See APPENDIX for complete list of gas dependent variables Note Make sure the correct gas number and name selected are current All adjustments made to the gas linearization table will be applied to the currently selected gas Use Gas Select command via digital communication interface see paragraph 8 3 ASCII Command Set FMA 4000 SOFTWARE INTERFACE COMMANDS or Omega supplied calibration and maintenance software to verify current gas table or select a new gas table The FMA 4000 gas flow calibration involves building a table of the actual flow val ues indexes 114 116 118 120 122 124 126 128 130 132 134 and corre sponding sensor readings indexes 113 115 117 118 119 121 123 125 127 129 131 133 Actual flow values are entered in normalized fraction format 100 000 F S cor responds to 1 000000 flow value and 0 000 96 F S corresponds to 0 000000 flow value The valid range for flow values is from 0 000000 to 1 000000 note FMA 4000 will accept up to 6 digits after decimal point Sensor readings are entered in counts of 12 bits ADC output and should always be in the rang
56. vents present Constant UMBER Flow Sensor Temperature too low Flashing UMBER OFF rer Kam w NN N Note 0 Priority Level is highest most important When two or more diagnostic events are present at the same time the event with the highest priority level will be indicated on the status LED and displayed on the LCD if equipped All diagnostic events may be accessed simultaneously via digital communication interface see paragraph 8 3 ASCII Command Set 5 4 Analog Output Signals configuration FMA 4000 series Mass Flow Meters are equipped with calibrated 0 5 Vdc and 4 20 mA output signals The set of the jumpers J7A J7B J7C located on the right side of the flow meter inside of the maintenance window above the 15 pin D con nector see Figure c 1 FMA 4000 configuration jumpers are used to switch between 0 5 Vdc or 4 20 mA output signals see Table VI 17 Analog output signals of 0 5 4 20 mA are attained appropriate pins of the 15 pin connector see Figure b 1 on the side of the FMA 4000 transducer Table VI Analog Output Jumper Configuration ANALOG SIGNAL OUTPUT Flow Rate Output 5 9 J7 B 6 10 Jumper Header J7 7 11 APPENDIX IV for actual jumpers layout on the PCB Note Digital output communication is simultaneously available with analog output 6 MAINTENANCE 6 1 Introduction It is important that the Mass F

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