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COMPASS



for molbox™ User’s Manual

© 1998-2003

DH Instruments, Inc

.

Page 176

Editor determines the default storage location for Data Files used by the

Report Editor. There is also a Data File path selection in COMPASS on the
[Tools], [Options], [Data File] tab (see Section 11.8). Normally, the Report

Editor and COMPASS main program default Data File paths are set to the

same location.

16.3.5 [WINDOW]

The

[Window]

menu contains a list of the file names of all open documents in the

COMPASS

Report Editor

. Any document selected in the list becomes the current top document in

the Editor. As an alternative to using this menu feature, clicking any open document in the
display can make it the current top document.

16.3.6 [HELP]

The

[Help]

menu accesses the

COMPASS Report Editor

on line help.

[Show Help]

opens the Help function to the Contents screen from which help functions can

be accessed.

[Search Help]

opens the Help function to a standard keyword search tool.

16.4 REPORT

EDITOR

AUTOMATION

The

COMPASS Report Editor

supports several Windows automation features which allow the report

editor to be used with other applications. The intent of these features is to allow another applications to
cause the

Report Editor

to generate a report using

COMPASS

Data Files (*.dat).

The automation features of the COMPASS Report Editor are advanced topics requiring information
beyond the scope of this manual. This information is provided for advanced users. There is no intent

for the COMPASS Report Editor to act as a generic reporting tool for other applications. Only Data

Files generated by COMPASS

will successfully produce reports. All other files are opened as

documents in the Editor.

16.4.1 DRAG

AND

DROP

The

COMPASS Report Editor

supports standard Windows file drag and drop features.

A set of file names can be dragged to the title bar of the

COMPASS Report Editor

from

Windows Explorer or the

<Test Complete>

screen (see Section 7.2.3). All

COMPASS

Data

Files (*.dat) will automatically generate a report in the report editor using the current
report template. All other files automatically open for editing in the rep

Report Editor

.

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Содержание COMPASS FOR MOLBOX

Страница 1: ...1998 2003 DH Instruments Inc COMPASS for molbox Flow Calibration Software User s Manual...

Страница 2: ...ied is provided DH Instruments disclaims any responsibility or liability for any direct or indirect damages resulting from the use of the information in this manual or products described in it Mention...

Страница 3: ...IEW 13 5 1 1 EXAMPLE 1 13 5 1 1 1 SET UP AN RS 232 DUT 14 5 1 1 2 SET UP A molbox AS THE REFERENCE 15 5 1 1 3 RUN THE TEST 16 5 1 2 EXAMPLE 2 18 5 1 2 1 SETUP VOLTAGE CURRENT OUTPUT TYPE 18 5 1 2 2 RE...

Страница 4: ...SCREENS 42 6 7 1 DUT REFERENCE COMPARISON RUN SCREEN 42 6 7 2 molbox OUTPUT RUN SCREEN 43 6 7 3 DUT OUTPUT RUN SCREEN 45 6 7 4 AVERAGE DATA RUN SCREEN 46 6 7 5 DATA GRID RUN SCREEN 47 6 7 6 DATA PLOT...

Страница 5: ...INITION EDITOR 104 10 3 3 REFERENCE TAB 104 10 3 4 DMM FREQUENCY PRESSURE TEMPERATURE TABS 107 10 3 5 POWER SUPPLY TAB 111 10 3 7 AUXILIARY 118 10 3 8 INTERFACE TAB 119 11 TOOLS OPTIONS 121 11 1 OVERV...

Страница 6: ...166 16 3 1 5 FILE SAVE 167 16 3 1 6 FILE SAVE AS 167 16 3 1 7 FILE SAVE ALL 167 16 3 1 8 FILE CLOSE 167 16 3 1 9 FILE CLOSE ALL 167 16 3 1 10 FILE PRINT 168 16 3 1 11 FILE PRINT ALL 168 16 3 1 12 FIL...

Страница 7: ...ULATIONS 187 19 1 OVERVIEW 187 19 2 DUT FLOW 187 19 3 DUT SET POINTS 188 19 4 DUT ERRORS 188 19 5 DENSITY CORRECTIONS 189 19 6 TOLERANCE 191 19 7 BEST FIT 192 19 8 LINEARITY 192 19 9 HYSTERESIS 193 19...

Страница 8: ...r Conditions Tab Fields 76 Table 22 DUT Definition Editor Read Tab Fields 77 Table 23 DUT Definition Editor Set Tab Fields 79 Table 24 Test Definition Editor Toolbar Features 83 Table 25 Test Definiti...

Страница 9: ...Editor Panel Fields 155 Table 56 Flow Unit Converter Panel Fields 157 Table 57 Process Gas Editor Tool Fields 160 Table 58 Find Panel Fields 170 Table 59 Multi Cycle Data File Options Screen Choices...

Страница 10: ...nt Average Setup 40 Figure 20 Auto Point Average Setup 41 Figure 21 DUT Reference Comparison Run Screen 42 Figure 22 molbox Output Run Screen 44 Figure 23 DUT Output Run Screen 45 Figure 24 Average Fl...

Страница 11: ...Tab 111 Figure 64 Hardware Definition Edit Power Supply Panel 112 Figure 65 Hardware Definition Controller Tab 114 Figure 66 Hardware Definition Edit Controller Panel 115 Figure 67 Hardware Definition...

Страница 12: ...Editor 164 Figure 94 Find Panel 169 Figure 95 Field Insertion Tool Panel 171 Figure 96 Multi Cycle Data File Options Panel 172 Figure 97 Page Setup Screen 173 Figure 98 Report Editor Main Toolbar 173...

Страница 13: ...anization Address 1 Address 2 City State Province Postal Code Country Tel Fax Email 1 I am using COMPASS for molbox Ver ______________ 2 I will run COMPASS on a computer whose operating system is circ...

Страница 14: ...ssions as they are used in this manual and the program For those of you who don t read manuals go directly to Section 2 3 to install COMPASS and then Section 3 for a summary of operating principles La...

Страница 15: ...calibrations and tests Using COMPASS for molbox you can create any number of calibration test scenarios define characteristics of various devices under test DUT run tests analyze test data and generat...

Страница 16: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 2 N NO OT TE ES S...

Страница 17: ...s press the Windows Start button and select Run In the Run dialog box type d setup or f setup depending on the drive letter of the CD drive of the installation disk Select COMPASS for molbox from the...

Страница 18: ...Meters it may be necessary to edit the DUT s after the upgrade process Test Files Use the Upgrade Wizard see Section 2 3 3 Just like DUT Files Test Files are no longer maintained as a directory of ind...

Страница 19: ...of files accessed and the number of files copied is provided for troubleshooting purposes in the event a DUT or Test File is not converted and an error message is displayed The upgrade process is com...

Страница 20: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 6 N NO OT TE ES S...

Страница 21: ...ng the Hardware Definition Tool see Section 10 The devices set up in the Hardware Definition must be selected as the current System Configuration see Section 10 2 Once a DUT and test have been set up...

Страница 22: ...ill be available in the System Configuration see Section 10 3 4 The molbox analog option does not require any additional setup Whenever the flow reference is a molbox1 the analog option is automatical...

Страница 23: ...in mind that COMPASS does not transmit pressure and temperature values for volume or actual flow units to the molbox even if COMPASS is making real time measurements Therefore the volume flow units d...

Страница 24: ...ing test execution Close or move the display to view the previous run screens see Section 6 5 1 Repeat the same test several times without having to pause or restart the test Specify multiple test cyc...

Страница 25: ...er s Manual for assistance specific to the device Changes to interface settings made in Tools Remote Communications are temporary If changes were necessary to establish communications these changes mu...

Страница 26: ...he Set Point Power Supply see Section 10 2 When a test is run or Run DUT is selected the DMM specified in the System Configuration will be used to measure the DUT output This example requires that a m...

Страница 27: ...igital interfaces also supply a converter box that transforms the communications interface into RS 232 If this converter is available set up the DUT Definition with an RS 232 as its Output Type on the...

Страница 28: ...irectly in RS 232 or IEEE 488 it will output in flow units However this is not the case in this example Note that Flow Units are sccm 0 00C and Output Units are see Section 8 5 4 Figure 1 Example 1 DU...

Страница 29: ...toolbar icon The RS 232 communications port has not been entered This selection occurs as one of the last steps in test initialization Setup DUT s Data Acquisition see Section 7 2 1 5 5 1 1 2 SET UP A...

Страница 30: ...IEEE 488 Card selection is made To streamline the setup the Default DUT RS232 Port can also be selected All other selections have no impact when running this example System Configuration items are onl...

Страница 31: ...selections and press OK see Section 7 2 1 5 The selected settings are automatically copied to the Set Interface Press OK on the Setup DUT s screen to start the test COMPASS will step through the test...

Страница 32: ...s that use voltage or current signals to indicate flow should use the Voltage Current Output Type This tells COMPASS to use the instrument currently selected as the DUT Output DMM in the System Confi...

Страница 33: ...S 232 were chosen it is possible to use the Ref Com2 option to use the COM2 port of the reference molbox to communicate with the DMM Select Voltage V from the Output Units field Then press the Read Co...

Страница 34: ...rating Conditions of the DUT see Section 8 5 3 If the scale is marked in float position units the DUT Definition output range should be in the same units see Section 8 5 4 In either case when a test i...

Страница 35: ...erature measurements should be taken at the inlet of the rotameter Precise calculation of the flow to take into account that the rotameter is affected by gas density cannot be made without knowledge o...

Страница 36: ...o calibrate a DUT that outputs volume or actual flow units such as ccm cfh or accm acfh Volume or actual flow units of measure are NOT mass flow units Very few flow measurements are made in these unit...

Страница 37: ...if the necessary Hardware Definitions are included in the System Configuration see Sections 10 3 4 10 2 If they cannot be read automatically they must be entered manually or set to a default value se...

Страница 38: ...g see Section 8 5 1 6 2 TEST DEFINITION SETUP Select the Setup Test Points table and enter the test point at which you would like to acquire the data see Section 9 Select the Setup Test Sequence tab a...

Страница 39: ...interconnection is leak free and that the inlet pressure to the molbloc is within its calibration limits 5 1 7 1 DUT DEFINITION SETUP Select the Setup DUT Header tab and select the DUT s process gas s...

Страница 40: ...s knowledge of the gas pressure and temperature Some devices include a flow computer and or other accessories to measure the gas pressure and temperature and calculate mass flow from volume flow For e...

Страница 41: ...tions the gas temperature and pressure at the DUT must be known during the test This information must be manually entered into COMPASS if it can t be obtained electronically The setup of manual entry...

Страница 42: ...eq Q should NOT be used as the reference flow value in this example When no Gas Density Correction is being applied the Ref Q DUT Cond value is equal to the Ref Q value Therefore Ref Q DUT Cond can be...

Страница 43: ...ed into six separate selections Each menu item is summarized below and covered in detail in various sections of this manual Run Use this choice to start one of the three COMPASS test running data acqu...

Страница 44: ...plays to determine the new current point when the Skip Back and Skip Forward buttons are used The progress indicator is a visual indication of the relationship between the current test point and the n...

Страница 45: ...he next step in a point sequence This feature is available up to Step of the highest point executed see Section 6 3 The limitation is to ensure that data is logged at each point Most often this tool i...

Страница 46: ...d tab see Sections 6 7 5 and 0 Data Plot Display the plot tool loaded with data from the current test No new Data Files can be loaded in the plot tool while a test is running see Section 6 7 6 I O Spy...

Страница 47: ...y cannot be scaled or tiled like the other run screens During tests the Tare Jog Flow and Enter Flow Datay panels are used to facilitate their respective functions Use the information in Sections 6 6...

Страница 48: ...dations on molbox pressure transducer taring This function executes the molbox tare function When pressed a message displays allowing the selection of the tare pressure upstream or downstream After th...

Страница 49: ...nstantaneous downstream pressure This value is corrected by of the current tare value Upstream Pressure Instantaneous upstream pressure This value is corrected by of the current tare value 6 6 3 PURGE...

Страница 50: ...ve Figure 15 Toggle molbox drivers Form 6 6 6 FLOW CONDITIONS The flow conditions function is represented by the toolbar icon The flow conditions function displays a flow conditions pop up panel that...

Страница 51: ...measure can be changed with this function In Run DUT mode the flow units are controlled by the DUT Definition The pressure and temperature units may also be controlled by the DUT Definition if it spec...

Страница 52: ...target is accepted see Section 6 7 3 Realize that the target flow value is set in the target flow unit of measure If these units are changed COMPASS converts the current target flow value to the new...

Страница 53: ...the last set target flow by the amount specified next to the jog buttons The set point resulting from each jog step displays on the DUT run screen A fixed 2s delay occurs after each jog step This prev...

Страница 54: ...les generated during tests Only 1 file can be active at a time If a file is already open when this option is selected the file is first closed before the new file is created Use an Initialization pref...

Страница 55: ...is pressed the Auto Point Average Setup see Figure 20 displays to allow entry of the averaging time and the intervals between averages Then COMPASS will automatically begin averaging data When the av...

Страница 56: ...for common default displays The combination of these features makes the COMPASS user interface totally customizable 6 7 1 DUT REFERENCE COMPARISON RUN SCREEN This run screen contains a simple display...

Страница 57: ...s between entries To change the display unit of measure click the value and select the desired unit from the list Error Rdg DUT percent of reading error see Section 19 4 Error DUTFS DUT percent of ful...

Страница 58: ...box determines the differential pressure and outputs it to COMPASS BPR BPR is the back pressure ratio downstream pressure upstream pressure This field is present only when the reference is a molblocS...

Страница 59: ...DUT Definition in the DUT Definition Editor Table 11 describes all of the fields on the DUT Output run screen Figure 23 DUT Output Run Screen Table 11 DUT Output Run Screen Fields LABEL DESCRIPTION Fl...

Страница 60: ...isplays in the Data Grid run screen so there is no reason to have an independent averaging run screen To change the averaging time click the averaging time box enter the new time value and press Enter...

Страница 61: ...ring the averaging interval STD The standard deviation of the reference flow values measured over the averaging period 6 7 5 DATA GRID RUN SCREEN In Run Test mode while running tests the Data Grid run...

Страница 62: ...ng a test causes the graph to update with the current test point information If the Force grid selection option on the Tools Options Grid tab is not selected the current cycle test data is not automat...

Страница 63: ...ace there is a configuration problem in COMPASS Use Setup Hardware to make interface changes to an instrument and Setup System to specify instruments to be used see Sections 10 3 10 2 Table 13 Spy Win...

Страница 64: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 50 N NO OT TE ES S...

Страница 65: ...data selections The details of how a test runs are defined in the Test Definition see Section 9 Certain aspects of how a test runs can be customized using the Tools Options Run Test and End Test tabs...

Страница 66: ...ence in the System Configuration see Section 10 2 test initialization always begins by loading the molbloc into memory and determining which features are available Depending on the molbox model and th...

Страница 67: ...red DUT The highlighted DUT record label is listed at the bottom of the display To select a DUT from the DUT list double click on the desired listing or press OK while the listing is highlighted Click...

Страница 68: ...in the DUT Definition is automatically selected COMPASS performs various checks for compatibility between the selected Test Definition and the DUT When conflicts are detected error and warning message...

Страница 69: ...necessary There are some cases in which this display is not presented regardless of the options selected This occurs when the selected DUT Definition is Individual DUT see Section 8 5 2 and neither RS...

Страница 70: ...face do not automatically update the read interface It is therefore possible for the set and read interfaces to be different This is an atypical use of this feature but it is supported If the DUT read...

Страница 71: ...Section 11 8 The run test sequence is as follows Run purge If purge is specified in the Test Definition see Section 9 5 8 COMPASS will set the purge flow rate activate the necessary molbox valves to...

Страница 72: ...6 8 Use these control functions in the necessary combination to set the desired flow Typically Jog is used to adjust the flow to put the indication of a flow meter on its cardinal point if desired Thi...

Страница 73: ...run test is complete see Section 7 2 2 test conclusion begins Other than the repeat point option there are two main steps to the test conclusion Test Notes The Test Notes pop up appears to allow the...

Страница 74: ...Test Complete selections Delete File action button Used to delete the current test Data File Use this feature if the data taken will not be used When used a delete confirmation prompt must be answere...

Страница 75: ...the plotting and reporting functions with very large data files Instead export the data file to a spread sheet application for further analysis COMPASS polls the molbox and responds to the toolbar opt...

Страница 76: ...l flow control is selected the Flow Control option will not be available Use the available features of the Control Toolbar to purge leak test or tare the molbox change the flow rate and stability crit...

Страница 77: ...Definition does not require new entries during test initialization see Section 7 2 1 5 DUT Profile Definitions are intended to define a general DUT type They do not include serial number and identifi...

Страница 78: ...any of the Selector column headers to sort the DUT Definitions low to high by the data in that column For example clicking the Model column header automatically re sorts the DUTs based on model If a...

Страница 79: ...entifying information and the Profile or Individual type choice Correction Tab see Section 8 5 3 Specifies whether a gas density correction should be made for the DUT and the DUT s standard operating...

Страница 80: ...ata directory naming convention selected using the Tools Options Data File tab see Section 11 8 Viewing DUT label Identifies the current relative sort position of the DUT in the Editor As the sort ord...

Страница 81: ...olls to the next DUT Definition following the current sort order see Section 8 4 8 5 2 HEADER TAB This DUT Definition Editor folder contains common DUT header information The purpose of the Header fie...

Страница 82: ...rocess Gas and Calibration Gas selection Manually added manufacturers are typically used with DUTs that do not use K factors The default Data File directory naming preference can use this entry to cre...

Страница 83: ...tion The information entered is used to determine the density of the flowing gas under the normal operating conditions of the DUT The density is then applied to the reference flow based on the density...

Страница 84: ...ensity to the normal operating density is used to determine the reference flow in the DUT s normal operating conditions Variable area style flow meters rotameters typically use this type of correction...

Страница 85: ...the previous cases COMPASS must calculate the density using the entered information prior to applying the density correction Refer to Section 19 5 for calculation details concerning this parameter In...

Страница 86: ...is set to one order of magnitude greater than the DUT tolerance By default the reference resolution is set to be 1 order of magnitude greater than the resolution selected in this field Output Range U...

Страница 87: ...Enter the highest set point set point corresponding to the Max Flow of the DUT in the set point unit specified above If the set point unit is the flow range unit the Max Flow value is copied here and...

Страница 88: ...of the fixed flow value entered in the DUT flow range unit from the DUT Definition Range tab Output Units DUT tolerance is specified as the value of the fixed output value entered in the DUT output ra...

Страница 89: ...the uncertainty on gas corrections factors may lead to erroneous data molbloc molbox does not use gas correction factors For additional information see the molbox Operation and Maintenance Manual Sect...

Страница 90: ...ices include Vacuum Atmosphere or Pressure When Pressure is selected a pressure value must be entered in the Exhaust Pressure field Exhaust Pressure conditional numeric entry field Enter the pressure...

Страница 91: ...utput unit typically Hz to the DUT s output units No command information is required as commands are provided in the frequency counter Hardware Definition Manual DUT data must be entered manually in R...

Страница 92: ...ive If the DUT is NOT a flow controller flow may be set manually or by a flow controlling device specified in the Test Definition CONTROL table see Section 9 5 6 Choose the manner in which set point c...

Страница 93: ...tion 13 for information on COMPASS remote communications Initialization Commands conditional drop down list action button These are the commands needed to initialize a DUT whose Set Point Type is RS 2...

Страница 94: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 80 N NO OT TE ES S...

Страница 95: ...rrently being edited This ID will change as the test sort order changes see Section 9 4 The edited test always displays in blue text in the Test Definition Selector see Section 9 4 Use these editing s...

Страница 96: ...phabetical ordering of the Record Label Any edited Test Definition displays in blue text in the Test Selector 9 5 TEST DEFINITION EDITOR All Test Definitions are created or edited using the Test Defin...

Страница 97: ...directory naming convention selected using the Tools Options Data File tab see Section 11 8 Viewing Test label Identifies the current relative sort position of the test in the Editor As the sort order...

Страница 98: ...will display in the Test Definition Editor Scroll Select scroll bar Scrolls to the next Test Definition according to the current sort order see Section 9 4 9 5 2 POINTS TABLE The Test Definition Point...

Страница 99: ...into a pencil icon that can be dropped on any point to insert a blank point at that location The selected point and all subsequent points then shift down leaving a blank point available for entry Doub...

Страница 100: ...ts tab is used to set the Test Point Type and provides a short cut to fill in the Points table automatically if desired see Section 9 5 2 The purpose of the Auto Fill Points tab s fields and settings...

Страница 101: ...nt used by Auto Fill to determine test points between the starting point and ending point Entering a value in this field has no affect until Auto Fill is pressed Ascending Descending Points drop down...

Страница 102: ...MPASS to consider that the stability test has been met and test execution can continue the ready condition flow inside stability limit must be present and uninterrupted for the Stability Hold time If...

Страница 103: ...fixed or user selectable time over which reference and DUT readings are averaged when taking data at each flow point When Timed is specified COMPASS averages for the fixed Averaging Time entered 0 999...

Страница 104: ...he Tare panel is displayed with a real time update of molbox tare information see Section 6 6 2 Do not check this option if you wish to run a completely automated test without operator intervention Ta...

Страница 105: ...olled to set the flow to the test point values as well as for purging In the case of automated flow control Flow Regulation and Jog functions are provided to allow adjustments of the flow if desired T...

Страница 106: ...e and DUT readings are taken If flow control is automated adjustments are made using the Flow Control panel see Section 6 6 8 This feature is most often used to adjust the flow to the DUT s cardinal p...

Страница 107: ...t the test to continue after a failed leak test Leak test after molbloc change check box Check this box for a leak test to be run after any molbloc change included in the test point sequence If the te...

Страница 108: ...molbloc change included in the test sequence The flow rate and purge time are set in other fields of this tab Purge target flow conditional numeric entry field Determines the flow rate at which any pu...

Страница 109: ...ltage Current Set Point Type see Sections 8 5 4 8 5 9 All set errors will be based on this measured value If the value is not checked set errors are based on the nominal test set point Read DUT Pressu...

Страница 110: ...fy the list of devices The information logged is not used in calculations however it can be used in reports and is visible on the Run DUT run screen and when viewing the Data File see Section 18 4 Whe...

Страница 111: ...COMPASS for molbox User s Manual Page 97 1998 2003 DH Instruments Inc Figure 57 Auxiliary Data Device Selector...

Страница 112: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 98 N NO OT TE ES S...

Страница 113: ...nicate with a hardware item an error occurs To correct this error the Hardware Definition for that item must be adjusted or a different Hardware Definition must be selected to include in the System Co...

Страница 114: ...lity to read pressure and temperature become available in the appropriate lists when a molbox is selected as the flow reference The System Configuration screen s Hardware Definition selection categori...

Страница 115: ...log set point value to DUTs that are checked as flow controllers in the DUT Definition Range tab and whose Setpoint Type is Voltage Current in the DUT Definition Set tab see Sections 8 5 4 8 5 9 The d...

Страница 116: ...After proper card installation no special setup is required to use the card in COMPASS De drop down list selection Select the manufacturer of the DeviceNet card used by the computer running COMPASS to...

Страница 117: ...devices that are available in the System Configuration Pressure Measurement drop down list and can be used by COMPASS to read the gas pressure at the DUT see Section 8 5 3 Temperature see Section 10...

Страница 118: ...del serial number identification and calibration date of each Hardware Definition used are logged in the Data File and are available for reports see Section 18 4 It is critical to specify the proper u...

Страница 119: ...ady supported by COMPASS In the event the reference is not a DHI molbloc molbox flow system no remote interface is supported The purpose of the flow reference Definition fields and settings as well as...

Страница 120: ...he run test Data Files and can be included in reports Do not use the following characters a comma or tab character These characters will cause problems when importing the Data File or creating the Dat...

Страница 121: ...ncy Measurement Pressure Measurement and Temperature Measurement drop down lists see Section 10 2 Each of the tabs provides a list of the existing Hardware Definitions for that type of device displays...

Страница 122: ...se tabs In the System Configuration when a molbox is selected as the Flow Reference Reference molbox is automatically included as a choice in the DUT Output DMM Setpoint DMM and Setpoint Power Supply...

Страница 123: ...the run test Data Files and can be included in reports Output Resolution required list box selection Select the resolution to apply to the device output All data logged and displayed for the device wi...

Страница 124: ...e command Editor Read Commands action button Click this button to display the Remote Command Editor form see Section 13 2 2 Enter the desired read commands then close the form These commands are conti...

Страница 125: ...unction or clicking on the New new toolbar function causes the Edit Reference Device or Add New Reference Device pop up to appear These pop ups are identical but differentiated by name to make it clea...

Страница 126: ...can be used for internal device tracking or any other information desired The value entered will be included in run test Data Files and can be included in reports Do not use the following characters a...

Страница 127: ...hen ready IEEE 488 Address conditional entry field If the remote interface selection is IEEE 488 the IEEE 488 Address entry field is shown When creating a new Definition the IEEE 488 address is set to...

Страница 128: ...to be created To select a flow controller Hardware Definition to view single click on the controller name and serial number in the List display panel upper left hand corner To edit an existing flow c...

Страница 129: ...COMPASS for molbox User s Manual Page 115 1998 2003 DH Instruments Inc Figure 66 Hardware Definition Edit Controller Panel...

Страница 130: ...set to the min max flow range fields If the flow controller interface is Voltage Current the set point unit must be V mV A or mA Set Range Min Set Required Numeric Entry Field Enter the lowest set poi...

Страница 131: ...ield Initialization Commands Action Button Click this button to display the Remote Command Editor form see Section 13 6 Enter the desired commands then close the form These commands are issued during...

Страница 132: ...used for more than one device in COMPASS The only requirement is that the interface settings be the same in each setup Refer to the instrument documentation for the specifics of remote communications...

Страница 133: ...the IEEE 488 and DeviceNet card s that the computer running COMPASS can use for communication The panel allows the address of a selected interface card to be entered COMPASS supports Capital Equipment...

Страница 134: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 120 Figure 68 Hardware Definition Interface Tab...

Страница 135: ...eps to include or suppress during test initialization Run Test Tab see Section 11 6 Set user preferences affecting the run test portion of test execution End Test Tab see Section 11 7 Set user prefere...

Страница 136: ...t initialization Prompt for MFC CB channel check box Check this option when the channel used on an MFC CB may differ from test to test A message displays during test initialization that allows the MFC...

Страница 137: ...water ratio drop down list box The water ratio selection effects the flow of sonic nozzles only when Air is used as the calibration gas In all other situations the water ratio selection is ignored Re...

Страница 138: ...order Any test data item logged in the Data File can be included in any column of the Data Grid run screen by using the correct combination of features see Section 18 4 1 Instructions on the operation...

Страница 139: ...ual elements can be removed by dragging and dropping a selected item into the Available Columns field Alternatively multiple columns can be selected and moved by using combinations of the shift arrow...

Страница 140: ...5 2 Manufacturers not manually added can be removed and edited using the Process Gas Editor see Section 15 DUT Models drop down list box Affects DUT models added in the DUT Definition Editor see Secti...

Страница 141: ...box When checked the DUT Selector is offered see Section 7 2 1 3 If unchecked the select DUT step is skipped and the last DUT that has been accessed edited viewed created or run is automatically used...

Страница 142: ...this option to reduce noise while averaging Typically changing the averaging time interval will serve the same purpose Force reference flow to zero when the set point is zero check box When this optio...

Страница 143: ...reference flow values by the DUT s K Factor Use this option only when the value entered is not already K Factor corrected If the DUT does not use a K Factor or the reference does not require manual en...

Страница 144: ...the typical value of atmospheric pressure at your location or standard atmospheric pressure of 101 325 kPa 14 696 psi to the gauge pressure value Default temperature drop down list box numeric entry...

Страница 145: ...ses the test at the end of each test cycle and prompts the user as to whether the last test point should be repeated This selection guarantees that the operator will consider whether to repeat points...

Страница 146: ...ay be stored on a network or other location that does not support the long file naming convention To avoid file name truncation uncheck this option to create default file names that are 8 characters o...

Страница 147: ...ere is enough room to store test Data Files and that the location is not write protected Use the Browse button next to the entry field to select a new or existing directory using a directory browsing...

Страница 148: ...is created using Display Save Custom Display As during Run DUT Run molbox and Run Test run modes see Section 7 While running use the Run Toolbar to open the desired run screens Position and size the r...

Страница 149: ...DUT run mode display from the list Realize that only the molbox Output DUT Output Comparison Screen and the Averaging run screens are available for display in this run mode Run screens other than thes...

Страница 150: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 136 N NO OT TE ES S...

Страница 151: ...th the default directory set to the root Data File directory see Section 18 3 Selecting a Data File causes that file to be opened and displayed in the COMPASS Data Viewer screen The Data Viewer provid...

Страница 152: ...may also be printed from within View Test Data by clicking on the printer icon 12 4 Data Plot Data File Data Plot Data File is used to generate error plots of DUT and reference flow information store...

Страница 153: ...ommon plot properties The toolbar features are summarized below Allows selection using a standard Windows file browser of a different Data File to be plotted During test execution this icon is disable...

Страница 154: ...point is plotted against the reference flow Reading Error vs Reference Flow The DUT error as a percent of reading at each flow point is plotted against the reference flow DUT Flow vs Points The DUT f...

Страница 155: ...DESCRIPTION Point Type drop down list box Determines the type of point plotting method to apply to the plot data Points and Line Applies a symbol to all data points and connects a straight line betwe...

Страница 156: ...ck the cycle numbers that you wish to include in the current plot and uncheck those that you wish to remove from the plot All formatting and other plot options are enforced on all plotted cycles Figur...

Страница 157: ...ture displays the best fit polynomial on the plot when a best fit is included in the plot The equation of the first data cycle plotted is used when multiple cycles are plotted 12 4 2 4 CUSTOM PLOT Thi...

Страница 158: ...lection X Axis Data list box Select the data that will display along the X axis The text of the selection followed by units when appropriate will appear along the bottom of the plot Press the button n...

Страница 159: ...nitialization to prepare to the device to set or read properly not needed in all cases but indispensable in some and b the actual read or set instructions Read interfaces must always be set up so that...

Страница 160: ...lization commands are not used in any way by COMPASS Therefore there is no requirement to specify set or read information See Section 13 2 4 for information on Command Editor features Figure 83 Initia...

Страница 161: ...signates that a specific set point will occur and the target portion is the numerical set point value The actual command and format are determined by the device so refer to the instrument manual for d...

Страница 162: ...ue for this example appears at position 11 Therefore ten leading characters need to be stripped prior to processing the string Alternatively if the colon following Pressure will always appear prior to...

Страница 163: ...t into every IBM compatible computer The interface connects two devices in a full duplex fashion so that both devices can talk simultaneously The connection requires that the RS 232 receive line of on...

Страница 164: ...PC However this is a rare case To use IEEE 488 with COMPASS use the Setup System IEEE 488 Card option to select the IEEE 488 card installed in your PC see Section 10 2 When this selection is made no o...

Страница 165: ...modified by COMPASS The communications time out is fixed at 10 seconds A time out is indicated by displaying COMPASS Time Out If the command does not have a response or the target communications devic...

Страница 166: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 152 N NO OT TE ES S...

Страница 167: ...Base Unit then providing the ability to change the reference pressure and temperature when applicable Fixed volumetrically based mass flow units as well as volume or actual flow units are available V...

Страница 168: ...ow unit or delete an existing flow unit The icon representations of these buttons are common to other COMPASS editors When creating a new flow unit of measure always start by selecting a Base Unit If...

Страница 169: ...quisition of pressure and temperature The Pressure Measurement and Temperature Measurement selections in Setup System determine whether or not these are read automatically or entered manually in COMPA...

Страница 170: ...ues always display with resolution based on the resolution of the original input This can be confusing if a small quantity unit is converted to a large quantity unit For example if Pa Pascal pressure...

Страница 171: ...neous pressure values If an actual flow unit is selected enter the pressure in Pascal into this field If necessary use the pressure unit converter to determine the actual pressure in Pascal Temperatur...

Страница 172: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 158 N NO OT TE ES S...

Страница 173: ...d to automatically display gas conversion factors appropriate for the DUT manufacturer process gas and calibration gas selected in a DUT Definition DUT manufacturers that do not use or require K facto...

Страница 174: ...dd action button Adds a new manufacturer to the list All items added will be available in the DUT Definition Editor in the COMPASS main program see Section 8 5 Del action button Use this button to rem...

Страница 175: ...s Record action button Record the changes to the displayed process gas information When Record is pressed a new gas can be added or edited prior to saving the file Failure to press record will undo al...

Страница 176: ...priate percentages until 100 of the blended gas is defined Up to five gases can be used to define a gas blend Then press OK to update the Process Gas Editor with the newly defined blend Press Clear to...

Страница 177: ...ion specifically refers to All The Option functions are not file specific The report Editor includes a Test Data Field Insertion Tool This tool allows links to fields in COMPASS Date Files dat to be e...

Страница 178: ...lose reports rtf and report templates tpl Edit see Section 16 3 2 Search cut and paste text These features are also available using the toolbar and standard Windows shortcuts Format see Section 16 3 3...

Страница 179: ...he selected report file opens in the Editor where it can be edited as desired Use the File Save feature or the toolbar shortcut to save the file 16 3 1 2 FILE GENERATE REPORT This feature is represent...

Страница 180: ...play in the completed report with a font point size of 20 and also have bold text Keep this in mind when generating a report template 16 3 1 4 FILE CREATE TEMPLATE This feature is represented by the t...

Страница 181: ...s the default path is also changed to reflect the new location 16 3 1 6 FILE SAVE AS Save As is used to save the current top file with a different name essentially making a copy of the file The option...

Страница 182: ...nt option for each open file see Section 16 3 1 10 16 3 1 12 FILE EXIT Selecting Exit closes the report Editor 16 3 2 EDIT The Edit menu provides common word processor editing functions Many of these...

Страница 183: ...by the toolbar icon Paste copies the contents of the Windows clipboard to the current cursor location in the document 16 3 2 5 EDIT FIND This feature is represented by the toolbar icon Find provides...

Страница 184: ...key combination CTRL F instead of making a menu selection 16 3 2 7 EDIT SELECT ALL Select All highlights all text in the active document Most frequently selecting all text is used to copy the informat...

Страница 185: ...longer operate They can be cut and pasted to new locations so long as care is taken not to alter them The formatting present in the document at the current insertion point is applied to the field lin...

Страница 186: ...each data cycle stored in the selected Data File All field keys that have a specifically assigned data cycle are ignored Each report generated will be formatted based on the selected report template...

Страница 187: ...ile paths is also located here 16 3 4 1 OPTIONS TOOLBAR The Toolbar refers to the main toolbar containing shortcuts to many of the file options Selecting this item toggles the display state of the too...

Страница 188: ...em This font is in bold Font Italic Displays and changes the current font italic setting CTRL I is a shortcut to this toolbar item This font is in italics Font Underscore Displays and changes the curr...

Страница 189: ...tion then release the mouse button to drop it This parameter has no effect on the first line of a paragraph and can be greater than or less than the left indent Right Indent Sets or displays the right...

Страница 190: ...EDITOR AUTOMATION The COMPASS Report Editor supports several Windows automation features which allow the report editor to be used with other applications The intent of these features is to allow anot...

Страница 191: ...ows documentation and Help for details 16 4 3 DDE DYNAMIC DATA EXCHANGE The COMPASS Report Editor has an object that acts as a DDE source that can be changed to generate a report or open documents To...

Страница 192: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 178 N NO OT TE ES S...

Страница 193: ...splays that contain a question mark in the top right hand corner control box To access this help first click the question mark This changes the cursor into a question mark that can be clicked on any f...

Страница 194: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 180 N NO OT TE ES S...

Страница 195: ...the DUT serial number is used specified in the DUT Definition see Section 8 5 2 The DUT based sub directories are automatically created by COMPASS at the designated location The automated Data File n...

Страница 196: ...A if the DUT did not use this type of data acquisition Set Point DMM Includes information from the DMM used to measure the DUT set point see Sections 10 2 10 3 4 If the DUT set point was not measured...

Страница 197: ...logged during the test see Section 7 2 2 Statistics Includes values calculated from the test data measurement uncertainty linearity hysteresis repeatability and the best fit straight line transfer fun...

Страница 198: ...n 10 2 Ideally the averaging times are always the same however it is possible for the averaging time to end just as a new command is issued to a supported instrument The average will not complete unti...

Страница 199: ...from point to point and may not be equal to the Ref Pts value Systematic delays with the System Configuration and basic instrument response time make it possible for some instruments to communicate f...

Страница 200: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 186 N NO OT TE ES S...

Страница 201: ...an and then applying this percentage to the DUT flow span see Sections 8 5 4 8 5 8 for information on DUT output and flow spans This calculation is used regardless of the state of the DUT s Density Co...

Страница 202: ...appropriate span and minimum value be substituted into the equation span current Q Q Q Q min S Q S S DUT span min VARIABLE DESCRIPTION Q Proportion of the DUT flow span based on the measured DUT flow...

Страница 203: ...set point flow in DUT flow units Set DUTFS E _ DUT percent of full scale set point error Set Rdg E _ DUT percent of reading set point error 19 5 DENSITY CORRECTIONS COMPASS includes two gas density co...

Страница 204: ...correction determines the flow in the normal operating conditions so any actual flow unit conversion must assume that these are the actual conditions Gas density corrections always use the reference f...

Страница 205: ...n is DUTspan or Reading the tolerance used is the greater of the two values Tolerances that are defined in DUT flow set or output units are also compared directly in flow units The conversion from set...

Страница 206: ...r reference flow It depends on the purpose of the best fit Typically it is the DUT flow yj Y axis data The data may be either the DUT or reference flow It depends on the purpose of the best fit Typica...

Страница 207: ...ng the maximum error deviation between any two cycles at the same point The value is expressed in DUTFS Single cycle tests never include a DUT repeatability value 19 11 MEASUREMENT UNCERTAINTY The DUT...

Страница 208: ...lation 19 12 FLOW UNIT CONVERSIONS COMPASS performs all internal flow conversion to and from kg s There are three types of unit conversion mass to mass mass to volume and mass to perfect Each type of...

Страница 209: ...in with sccm ccm pccm mol s or kg s Then use the appropriate formula to convert to kg s then from kg s to sccm ccm pccm or mol s Use a scaling factor as necessary to convert to the final flow unit fro...

Страница 210: ...essure and temperature must be used for P and T 7 10 6x sccm s kg T P T P Determine sccm or ccm flow from kg s at a given pressure and temperature T P T P x s kg sccm 7 10 6 Conversion from pccm to mo...

Страница 211: ...sure and temperature s kg Flow in kg of gas per second sccm P T Flow in sccm or ccm at a given pressure and temperature The only difference is if the flow unit was setup as an actual flow unit or volu...

Страница 212: ...8 1245 Carbon Dioxide CO2 44 0100 Carbon Monoxide CO 28 0106 Carbon Tetrafluoride CF4 88 0048 Ethane C2H6 30 0702 Ethylene C2H4 28 054 Fluoroform CHF3 70 0144 Helium He 4 0026 Hexafluoroethane C2F6 13...

Страница 213: ...E 01 Carbon Tetrafluoride CF4 1 13624 E 01 Ethane C2H6 3 32568 E 01 Ethylene C2H4 3 56455 E 01 Fluoroform CHF3 1 42837 E 01 Helium He 2 49838 E 02 Hexafluoroethane C2F6 7 24533 E 00 Hydrogen H2 4 960...

Страница 214: ...E 03 inWa 20 C inch of water 4 021732 E 03 inWa 60 F inch of water 4 018429 E 03 inHg 0 C inch of mercury 2 953 E 04 kcm 2 Kilogram force per centimeter square 1 019716 E 05 User User User defined coe...

Страница 215: ...88 RH P P RH P W g amb g 3 2 2 1 3 0 C T C T C T C P amb amb amb g Variable Definition W Calculated water ratio Pg Calculated water saturation pressure RH Relative humidity Pamb Ambient pressure in Pa...

Страница 216: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 202 N NO OT TE ES S...

Страница 217: ...re 0 00 or another unexpected value The DUT Read Command or Leading characters to strip entry is incorrect when the DUT data acquisition is RS 232 or IEEE 488 The DMM Read Command or Leading character...

Страница 218: ...e state of the FIFO Enabled option at the bottom of the Settings display Check the RS 232 cable to make sure that all pins are properly connected Especially pin 5 ground However rare RS 232 do go bad...

Страница 219: ...DUT device resolution Use the DUT Definition Editor to change the Output Resolution field of the DUT to get the desired output resolution 8 5 4 When running COMPASS the front panel of the molbox only...

Страница 220: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 206 N NO OT TE ES S...

Страница 221: ...tream port in the direction of the flow DUT Device Under Test Test Instrument TI Unit Under Test UUT The device that is being tested using COMPASS DUTs are defined in DUT Definitions DUT Definition Th...

Страница 222: ...perating Conditions Normal Operating Pressure and Temperature The gas pressure and temperature conditions under which a DUT is normally operated The conditions for which it is calibrated Normal Operat...

Страница 223: ...of the differential pressure across a molbloc molbox1 and molbox RFM have automated taring routines and COMPASS can cause these to execute during a test See the molbox Operation and Maintenance Manual...

Страница 224: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 210 N NO OT TE ES S...

Страница 225: ...which COMPASS is installed may make a second copy for his or her use on a second computer used only for producing reports using the COMPASS Report Editor function You may also store or install a copy...

Страница 226: ...COMPASS for molbox User s Manual 1998 2003 DH Instruments Inc Page 212 N NO OT TE ES S...

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