Aalborg PWE Digital Uživatelský manuál

OPERATING MANUALPWEDigital Paddle Wheel Flow MeterTechnical Data Sheet No.: TD-10-09-118MDate of Issue: October 2009

52.2.4 Programmable optically isolated Output Signals ConnectionsOptocoupler #1 (pins F and G):Pin F ------------ Plus (+) (passive)Pin G -----------

6Communication Settings for RS-485/RS-232 communication interface:Baud rate: ------------ 9600 baud Stop bit: ------------ 1Data bits: ------------ 8P

72.3 PWE Flow Meter SpecificationFLOW MEDIUM: Please note that PWE Flow Meters are designed to work onlywith liquids. Never try to measure flow rates

COMMUNICATIONS PARAMETERS (RS-232/RS-485): Baud rate: ... 9600 baudStop bit: ... 1Data bits: ...

92.4 PWE MAINTENANCECAUTION: Some of the IC devices used in the flow meter signal conditioning circuitry are static sensitive and may be damaged by i

10142327658NOTE: Platinum RTD is not shown.PARTS LISTPARTS PWEP MATERIALS PWET MATERIALS1 LOWER BLOCK POLYPROPYLENE PVDF2 JEWEL BEARING (2 required) P

113. LCD KEYPAD OPERATION: DATA ENTRY AND CONFIGURATION (applicable for LCD options only)3.1 Display Indications Initially, after the power is first

12Figure 3.3: PWE without RTD option initial Process Information ScreenBased on flow meter configuration (with or without RTD option), different param

13Action: Keypad UPiFigure 3.6: PWE with RTD option PI Screen with flow range, temperature andMain TotalizerAction: Keypad UPiAction:

14Action: Keypad UPiFigure 3.9: PWE with RTD option initial Process Information ScreenPressing UP button, pages through the PI screens in the

Aalborg7 is a registered trademark of Aalborg Instruments & Controls. NOTE: Aalborg reserves the right to change designs and dimensions at its sol

15Action: Keypad UPiFigure 3.12: PWE without RTD option initial PI Screen with Flow rate and MainTotalizer3.2 Menu SequenceThe listing below gives a g

16Figure 3.12 Upper level menu structure.CONFIGURATION DATAProg. Protectionon/offProg. Prot. Codeold/newSubmenuFlow Meter InfoSubmenuMeasuring UnitsSu

173.3 Parameter Summary and Data Entry

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TABLE OF CONTENTS1. UNPACKING THE PWE FLOW METER...1.1 Inspect Package for External Damage...

4. PARAMETER ENTRYThere are two methods of data entry: • Direct numerical number entry• Tabular Input from a table menu.If menu with direct numerical

26Now enter the new PP-code (0-255) and press ENTER key. The new PP-code isnow valid to turn off the program protection. If the PP-code is forgotten,

274.2.3 RTD hardware optionThis display indicates presence of the RTD hardware. If second line of the screenindicates “Installed”, then flow meter is

284.2.6 Flow Meter EEPROM data base versionThis display indicates current version of the EEPROM data base. The EEPROMstores all flow meter configurati

294.2.10 Fluid NameThis display indicates the name of the fluid the flow meter was calibrated for. Thefluid name may be changed by user via digital co

4.3 Submenu Measuring UnitsThis submenu allows selection of units for flow rate and Totalizer reading. Unitsshould be selected to meet your particular

31UNITS OF MEASURE NUMBER INDEXFLOW RATEENGINEERING UNITSTOTALIZERENGINEERING UNITSDESCRIPTION1 0 % %s Percent of full scale2 1 mL/sec mL Milliliter p

32The listed units in the table above can be set with the Up and Dn buttons and areaccepted by pressing ENT button.4.3.1 User Defined Measuring UnitTh

334.3.1.c User Defined Unit Density support Tabular entryThis function determines whether the newly entered user defined engineering unitis a mass uni

34The listed above Alarm Mode selections can be set with the Up and Dn buttonsand are accepted by pressing ENT button.4.4.2 Low Flow Alarm Numerical e

4.3 Submenu Measuring Units...4.3.1 User Defined Measuring Unit...

If a High Alarm occurs, and one of the two optical outputs is assigned to the HighAlarm Event (see Section 4.8) the optically isolated output will be

36The listed above Flow Alarm Action Latch selections can be set with the Up andDn buttons and are accepted by pressing ENT button.4.5 Submenu Tempera

37A typical display with flow meter Low Temperature Alarm is shown below.A typical display with flow meter Low Temperature Alarm is shown below.If a L

If a High Temperature Alarm occurs, and one of the two optical outputs is assignedto the High Alarm Event (see Section 4.8) the optically isolated out

The listed above Temperature Alarm Action Latch selections can be set with theUp and Dn buttons and are accepted by pressing ENT button.4.6 Submenu Ma

404.6.2 Main Totalizer Flow Start Numerical entryThe Main Totalizer Start Flow value can be entered in increments of 0.1% from 0.0– 100.0%F.S. A typic

41If during these two seconds user will press ENTER button again, the Main Totalizervolume will be reset to zero. Following screen will appear for two

424.7.2 Pilot Totalizer Flow Start Numerical entryThe Pilot Totalizer Start Flow value can be entered in increments of 0.1% from0.0 – 100.0%F.S. A typ

43If during these two seconds user will press ENTER button again, the Pilot Totalizervolume will be reset to zero. Following screen will appear for tw

444.9 Submenu Flow Meter Configuration4.9.1 Submenu Flow Meter Low Flow Cut–off Numerical entryThe low flow cut-off can be selected between 0.0 and

4.12.1 Submenu Raw Pulses Count...4.12.2 Submenu Pulse Frequency...

4.9.3 Submenu Flow Meter Calibration Factor Numerical entryCalibration Factor is defined as the number of pulses from flow sensor per onegallon of flu

46The digital filter only works with pulse width measurement method and is notapplicable for flow measurement mode (a) – “number of pulses over measur

4.9.7 Submenu Flow Linearizer Tabular entryThe Flow Linearization algorithm may be used to improve linearity of the flowmeasurement. The Flow Lineariz

48Once Ent button is pressed the next conformation screen will appear only for 2seconds.If during these two seconds user will press ENTER button again

49The following diagnostic events are supported:Event NumberDiagnostic Alarm Event DescriptionLCD bit Code1 CPU Temperature too High 02 Flow rate more

504.11.1 Submenu Alarm Events Log StatusEach alarm event has fixed designated position on the LCD screen. Most signifi-cant event code (F) is set on t

514.11.2 Submenu Alarm Events ListThis menu selection provides list of the descriptions and corresponding code forall supported events. If ENTER is pr

524.12.1 Submenu Raw Pulses CountThis menu selection provides number of pulses from the flow sensor within spe-cific measurement interval. In the exam

534.12.5 Submenu DAC_B Temperature OutputThis menu selection provides current value of the DAC register for analog tem-perature output circuitry.4.12.

54Figure 5-1 PWE configuration jumpersTable 5-1FunctionAnalog Flow Output Analog Temp. Output* RS-485J3A J3B J3C J3D J3E J3F J3GAnalogOutput0-5 Vdc 2-

1. UNPACKING THE PWE1.1 Inspect Package for External DamageYour PWE Paddle Wheel Meter was carefully packed in a sturdy cardboard carton,with antistat

55Note: It is recommended to use the Aalborg®supplied calibration andmaintenance software for analog output calibration. This softwareincludes an auto

5.2.2 Flow 0-5 Vdc analog output calibration1. Install jumpers J3A, J3B and J3C on the PC board for 0-5 Vdc output (see Table 5-1).2. Connect a certi

575.2.4 Temperature 0-5 Vdc analog output calibration*1. Install jumpers J3D, J3E and J3F on the PC board for 0-5 Vdc output (see Table 5-1).2. Conn

58Where: Y – the calculated ToutScale_mA value.Z – the calculated ToutOffset_mA value.Enable DAC update by typing: !11,WRITE,4,N[CR]Unit will respond

596.2 Flow Meter Span CalibrationUsing Aalborg®supplied calibration and maintenance software start Set Spanprocedure by navigating to the Tools/Set S

60If a new calibration table is going to be created, it is recommended to start cali-bration from 100% full scale. If only linearity adjustment is req

7. RS-485/RS-232 SOFTWARE INTERFACE COMMANDS7.1 GeneralThe standard PWE comes with an RS-485 interface. For the optional RS-232 inter-face, the start

4. Set the flow high alarm limit to 85% of full scale flow rate:!12,FA,H,85.0<CR>The device will reply: !12,FA,H:85.0<CR> Several examples

63AALBORG PWE METER ASCII SOFTWARE INTERFACE COMMANDSNOTE: AN "*" INDICATES POWER UP DEFAULT SETTINGS.AN "**"INDICATES OPTIONAL FE

64COMMANDNAMEDESCRIPTIONNO.COMMAND SYNTAXCOMMAND ARGUMENT 1 ARGUMENT 2 ARGUMENT 3 ARGUMENT 4 RESPONSEMeter InfoRequests meter configuration info:- fu

Additionally, the PWE Flow Meter incorporates a Microcontroller driven circuitryand non-volatile memory that stores all hardware specific variables. T

65COMMANDNAMEDESCRIPTIONNO.COMMAND SYNTAXCOMMANDARGUMENT 1ARGUMENT 2 ARGUMENT 3 ARGUMENT 4 RESPONSETemperatureAlarms**Sets / reads the status of the

66COMMANDNAMEDESCRIPTIONNO.COMMAND SYNTAXCOMMAND ARGUMENT 1 ARGUMENT 2ARGUMENT 3ARGUMENT 4RESPONSEOptical OutputsAssigns action of the two optical ou

67COMMANDNAMEDESCRIPTIONNO.COMMAND SYNTAXCOMMAND ARGUMENT 1ARGUMENT 2 ARGUMENT 3ARGUMENT 4 RESPONSEPilot TotalizerSets and controls action of the Pi

68COMMANDNAMEDESCRIPTIONNO.COMMAND SYNTAXCOMMANDARGUMENT 1 ARGUMENT 2ARGUMENT 3 ARGUMENT 4 RESPONSEUnitsSet the units of measure for gas flow and tot

69COMMANDNAMEDESCRIPTIONNO.COMMAND SYNTAXCOMMAND ARGUMENT 1 ARGUMENT 2 ARGUMENT 3ARGUMENT 4RESPONSEMaintenanceTimerHours since last time unit was ca

70COMMANDNAMEDESCRIPTIONNO.COMMAND SYNTAXCOMMANDARGUMENT 1ARGUMENT 2ARGUMENT 3 ARGUMENT 4RESPONSENoise Reduction FilterNoise Reduction Filter para

718. TROUBLESHOOTING8.1 Common ConditionsYour PWE Flow Meter was thoroughly checked at numerous quality control pointsduring and after manufacturing a

72No INDICATION LIKELY REASON SOLUTION5 LCD Display flow readingand 0-5 Vdc output voltagedo correspond to the correct flow range, but 4-20mA output s

73APPENDIX IAALBORG7 PWE Flow Meter EEPROM Variables Rev:A002 [10/01/2009]Note: indexes 0-19 are write protected (manufacture and calibration specific

74INDEX NAME DATA TYPE NOTES33TotalFlowStart float Start Main Totalizer at flow [%FS] 0 - Disabled34TotalVolStop floatMain Totalizer Action Limit Volu

2.2.1 Power Supply ConnectionsThe power supply requirements for PWE flow meter are: 11 to 26 Vdc 100 mVmaximum peak to peak output noise, (unipolar p

75INDEX NAME DATA TYPE NOTES68FlowTbl[3].FlowPFS float Flow Linearizer Index 3 PFS [0.0 – 1.0]69 FlowTbl[3].LinCounts uint Flow Linearizer Index 3 Cou

76APPENDIX IIComponent Diagram Top SideComponent Diagram Bottom Side

77APPENDIX IIIDimensional Drawing

WARRANTYAalborg7 Flow Systems are warranted against parts and workmanship fora period of one year from the date of purchase. Calibrations are warrante

Flow 0-5 VDC or 4-20 mA output signal connection:Pin M ------------ (+) Plus Flow Analog OutputPin K ------------ (-) Minus Flow Analog OutputTemper