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Intra Automation digiflow 515, Installation And Operating Manual

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Intra Automation digiflow 515 Installation And Operating Manual Download Page 44

Gas- and Steam Flowcomputer 

DigiFlow 515 

Operating Manual

 

 

44 

 

 

 

 

Summary of Contents for digiflow 515

Page 1: ...Softwareversion 2 0 and up DigiFlow 515 INTRA AUTOMATION GmbH Me und Regelinstrumente Otto Hahn Stra e 20 41515 Grevenbroich Tel 49 21 81 6 87 61 Fax 49 21 81 6 44 92 eMail INTRA Automation T Online...

Page 2: ......

Page 3: ...DESCRIPTION 21 7 2 CONFIGURATION OF A SET 21 7 3 INPUT OF A NUMBER 21 8 MENU TABLES 22 8 1 MAIN MENU 22 8 2 BASE SETUP 22 8 3 MEDIUM PARAMETERS 23 8 4 SIGNAL CHECK 23 8 5 FLOW PARAMETERS 24 8 6 OPTION...

Page 4: ...py at Reference Conditions kJ kg kF k factor pulses unit for a frequency flowmeter n m3 n m3 No Timebase Constant with which the flowrate is displayed 1 for units s 60 for units min 3600 for units h 8...

Page 5: ...py and mass flow 6 Energy Balance Assuming a mass balance in upstream and downstream pipe an energy balance of the loop is calculated Inputs from various of flowmeters are accepted Examples of these s...

Page 6: ...ows 16 cols Each char is 0 276 high Keyboard Sealed membrane keyboard with four keys Transmitter supply 18 V 100 mA via keyboard adjustable isolated Power 115 230 V AC 50 60 Hz internally switchable O...

Page 7: ...Width Adjustable between 10 ms and 90 ms Duty Cycle 1 1 Logic Open Collector Active Low Current sinking max 100 mA Pulse generation The pulse count is proportional to the counter difference in selecta...

Page 8: ...or lbs Temperature Range 273 C 460 F to 1 000 C 1 832 F Pressure Range 0 kPaabs 0 psia to 100 000 kPaabs 14 514 psia General Gas Gases Handles most gases where critical temperature critical pressure a...

Page 9: ...and pressure in downstream path C or F resp kPa or psi only when energy balance Specific Weight and Enthalpy in downstream path dm3 kg or kJ kg only when energy balance Date and time By means of the T...

Page 10: ...I units For explanation about the following abbreviations see listing at the beginning of the operating instruction 2 formulas form the basis for all other equations Specific Gravity d Molecular Weigh...

Page 11: ...S p p T T z z A Vb Vb b b b 8 Q Q M b Vb 5 Pressure and temperature signal are still square rooted the flow signal are not This is because the output from the D P transmitter isn t truly volumetric bu...

Page 12: ...6 1 1 Parameter setting of the flow calculator For the correct function of the flow calculator the following parameters must be entered kF k factor of flow measuring instruments with frequency output...

Page 13: ...If the influence of the compressibility on gases can be ignored then the factors Zb and Zf in the equations 1 to 8 will be set to 1 The computings become substantially simpler with these approximatio...

Page 14: ...4 20mA signal then the following parameters are to program Span 1 000 m 3 h Specific Gravity 1 105 Base Temperature 15 C Base Pressure 101 325 kPa Time Base hours 6 1 3 Application for General Gases...

Page 15: ...the AGA NX 19 mod equa tion These factors are used with equations 4 to 8 To calculate this compressibility factor following paramerters are to be entered in consideration of their limita tions Specif...

Page 16: ...is a corresponding pressure for every temperature and vice versa For superheated steam and water it is necessary to use both inputs Both the mass flow and enthalpy heat content are calcuated internal...

Page 17: ...e g Orifice Plate or ITABAR Probe Depending on the Output of the transmitter equations 5 and 6 or 7 and 8 are used Separate scaling must be programmed for each transmit ter Transmitter 2 is selected w...

Page 18: ...team measurement at a frequency meter Cause steam is satu rated it is only necessary to use either the pressure input or the temperature input Becaus of cost the tem perature sensor is used Then the f...

Page 19: ...sured values The following diagram shows an input signal pulsating and the effect of the filter on this signal unfiltered Flow filtered Time As guideline to the degree of filteringto be used the follo...

Page 20: ...The curve between the single dots was won by linear interpolation except for factor 1 which maintains a con stant value between Frequency 1 and the maximum input frequency During Calibration the user...

Page 21: ...ow chart to the parameter setting By pressing simultaneaously the TOTAL and the SCAN key the configuration mode is entered Then the user defined password must be confirmed after input with the ENTER k...

Page 22: ...owparams Signal Check Options Factory setting Leave protected by special password 8 2 Base Setup Base Setup Adjust Displaycontrast Set Clock Adjust Uext Pulse Resolution 1 0 0 000001 Unit Timebase Flo...

Page 23: ...pecific Gravity mol CO2 Meas Unit Energy Flow Heat Flow Input downstream Yes No Base Pressure Base Temperature Main Display Steam m q Gas m v Leave 8 4 Signal Check Signal Check I1 xx xx I2 xx xx I3 x...

Page 24: ...sors 1 Sensor 2 Sensor Function 2 Sensor Split Med Red Flow Span Volume Mass Design Pressure Design Temperature Span at 20mA Sensor 1 2 Sensors selected Split Range Sensor 2 Medium Weight Sensor 1 Red...

Page 25: ...hment Analog Output Main Display Pt100_1 Pt100_2 300 1200 2400 4800 9600 Baud Output 0 4 mA at Databits 7 8 Output 20 mA at Parity Min Alarm at no even odd Max Alarm at Stopbits 1 2 Sensor Purge Unit...

Page 26: ...Switch the correct flow signal will be selected The position of the DIP switches is in the following table in dependence of the input signal listed Input signal Terminal DIP switch position 1 CH1 2 C...

Page 27: ...tch output e g opto sensors pre amplifier 13 17 CH1 CH2 ON OFF Fig 3 Input signal Type B reed switch use shielded cable ON OFF 1 2 2 1 CH1 CH2 13 17 Fig 4 Input signal Type C coil or tacho generator R...

Page 28: ...of current source connected to positive pole of the signal wires PTD himselfs has no polarity 9 2 2 Analog 4 20mA input Each 4 20mA input has a load of 120 When the computer is AC powerd there is suff...

Page 29: ...al tranmitter supply 7 5 3 1 T 12 24 V DC 120 120 120 120 P 8 6 4 2 P P 1 2 DigiFlow 515 Fig 9 External transmitter supply Two transmitters for differential pressure as well as respectively one transm...

Page 30: ...al 30 9 3 Remote switched functions The DigiFlow 515 has the ability to reset the sums and to switch the display by remote keys The connection of that keys are displayed in Fig 10 15 17 16 RESET 16 30...

Page 31: ...ulse is genarated at a transistor with open collector output Pulse width is 10 90ms selectable The maximum switch current is 100mA When connecting a counter to the pulse output it may be necessary to...

Page 32: ...on with peripheral equipments or other computers A standard ticket form is in the flow computer integrated You find further information as well as the software protocol descrip tion in the instruction...

Page 33: ...he sum counters can simultaneously be done If the RESET operation is triggered first the ticket is created and after this the total values are reset internally The communications with printers take pl...

Page 34: ...d to a common bus using the RS485 interface Every set gets its own address about which it can be mentioned by the control computers e g process control computers or PLC The Host distributes an address...

Page 35: ...connection have to be found on the following sides Digital Analog Terminals galvanic Isolation converter DC DC Converter 23 24 Load max 500 Ohm Iout 0 4 20mA Fig 16 Analog output circuit Maximum load...

Page 36: ...feed in three times 1 Purging time distance ta Time between two purgings Setable from 10min to 31d 23h 50min This time starts after starting up the calculator or after reconfiguration 2 Purging time...

Page 37: ...gth be used Make sure that the shielding may be grounded only at an end suppression filters If inductive loads are switched with the relay output it may be necessary to provide a filtering module unde...

Page 38: ...e option 24 Analog output no 1 negative pole option 25 Analog output no 2 positive pole option 26 Analog output no 2 negative pole option 27 Analog output no 3 positive pole option 28 Analog output no...

Page 39: ...VAC 5A AMUX ADC 13bit 0 20mA or INPUTS 4 20mA and Pt100 2 2 2 2 230 or 115 VAC 50 or 60Hz WATCH DOG LINE 2 2 2 2 2 2 2 2 2 display and keyboard continual self calibration and temperature compensation...

Page 40: ...only when this input is used Analog 3 Same as Analog 1 but only when this input is used Analog 4 Same as Analog 1 but only when this input is used Pt100 1 Rpt100 20 Ohms or Rpt100 390 Ohms but only w...

Page 41: ...0 9 7701 1116 9 Ethane C2H6 1 0382 32 28 90 1 4884 708 4 Ethylene C2H4 0 9686 9 28 48 7 5036 730 4 Helium He2 0 1381 267 90 450 2 228 99 33 21 Helium 4 0 1382 267 90 450 3 226 8 32 9 Hydrogen H2 0 069...

Page 42: ...Gas and Steam Flowcomputer DigiFlow 515 Operating Manual 42 16 Appendix C Applications Examples...

Page 43: ...Gas and Steam Flowcomputer DigiFlow 515 Operating Manual 43...

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Page 46: ...Gas and Steam Flowcomputer DigiFlow 515 Operating Manual 46...

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