Problems Reading gas meter flow rate ni 9402 counter

2015/07/13
Can any one help with this?
I have been trying to overcome the problem of the delay were a value is retained at the output of the counter for a period after the gas meter has stopped. This is causing me a problem as I am feeding this value into an integrator to get a measurement of energy used.(in the system I have other inputs such as gas pressure, barometric pressure and temperature)
To solve this I decided to use the quadrature encoder input. I have taken the pulses from the gas meter and built a ripple counter from two JK flip flops (with logic to convert output to gray code) I have also added extra gates to counter propagation delay in the circuit. I am using a line driver IC SN75158PE4 at the output of the circuit. Can you see any problem with this method. I only ask because if I use X1 mode I get intermittent reading as in 0, reading, 0 reading etc. If I use X2 mode I get a value that I believe is correct but am still unsure about it. and in X4 mode I get a value that is lower than expected.?

Some ideas:
Monitor the raw DIO data showing the pulses, to make sure there are no spurious pulses after the flow is stopped or if there is any "bouncing" of the signal that might give a false hgh flow as the flow drops to zero - if there are you'll need to find something to deal with that.
What is the max/min range of pulse speeds you are working with and are the default clocks used in the counters and the update rate for your flow / energy calculations are all approrpiate - if you do the calcs faster the "delay" should be smaller ?
Are you using DAQmx channels or DAQassistant to do programming - using DAQmx will give you much more flexibility on how the measurements are processed, and may be better
I presume you are using a counter to produce a frequency output - if you switch to outputing the counter value itself, this will be the cumulative flow over time and that might be useable directly in your energy calculation without having to do an integration (assuming you are using the frequency to give flow rate (e.g. litres per second) which is being integrated). This might eliminate both any delay in seeing the measurement change and the effect of a delay on the integration.
Hope this helps (and is understandable!)

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Message - There was a problem reading this document (57)

Anyone else have this problem?
Purchased version of Windows 32 bit version of Acrobat XI update will not install properly or work.
First error info message is as per title after initial red screen which only appears once.
Second error info message is verify operation failed.
2 downloads, 3 installs and 2 repairs produce same result.
Adobe Australia called three times on 1800614863 but only automated selections 322323 made and transfer promised.
First call at 0901 local time.
All calls placed on hold first two timed out.
31 minutes into third call got an answer from a man in India.
In answer to my question:
Are you receiving reports of problems installing purchased upgrade versions of Acrobat XI Pro?
The answer was No.
He took details of messages and offered to help but I declined.
I have purchased and used all Acrobat Pro upgrades since 6.
Complete installation attempted.
Being done on a clean install of Windows XP SP3 on an OQO02 with only other program installed Office 2007 SBE.
Message was edited by: OQOroger to reflect inability to connect to seller Adobe Australia. Also Adobe site can't stay on Australia but reverts to USA. Full price of $A282 paid. USA purchasers only pay $US199 ($A191.57 at present exchange rates.) Credit card account already debited for purchase made yesterday. Subject line corrected 'as' changed to 'was'.
Message was edited by: OQOroger Corrected the price paid and currency conversion amount to show extra paid by Australians for 'local' support (from India). Added 'Message -' to title to make it less cryptic.
Message was edited by: OQOroger Typical setup installation results in same problems except
'There was a problem reading this document (57)'
window does not appear.
First window displaying and asking for acceptance of license conditions has no bottom section when first displayed so there is no way to accept these conditions except to close this window (confirm window appears) and launch program again when bottom panel is displayed.

Despite my advice of some of the many faults I have experienced with Acrobat XI Pro, Adobe support has never asked me to provide a 'Systems Report' which is available under the 'Help' tab.
This report indicates:
'Installed Acrobat: C:\Program Files\Adobe\Acrobat 11.0\Acrobat\Acrobat.exe
    Version: 11.0.0.379
    Creation Date: 2012/09/23
    Creation Time: 8:43:44 PM'
So if anyone has a working version other than 379 please let me know.
Complete 'Systems Report' is in a window named 'System Information' as is set ot below.
From first window
Adobe Acrobat Pro
menu
Help/Online Support/Generate System Report
returns window
System Information
with 2 parts
'System Parameters' and 'Installed Plug-ins'
first part details:
System Parameters
Account Detail:
   User Rights: Admin
   User Account Control: Undefined
   Process Integrity: Undefined
   Profile Type: None
Acrobat Detail:
   Sandboxing: Off
   Captive Reader: No
   Multi-Reader on Desktop Support: Off
Available Physical Memory: 530036 KB
Available Virtual Memory: 1993360 KB
BIOS Version: OQO    - fe60019
Default Browser:
Default Mail: Microsoft Office Outlook
    mapi32.dll
    Version: 1.0.2536.0 (XPClient.010817-1148)
Display Detail:
   Screen Width: 800
   Screen Height: 480
   Number of Monitors: 1
   Number of Mouse Buttons: 8
   Has Mouse Wheel: Yes
   Has Pen Windows: No
   Double Byte Character Set: No
   Has Input Method Editor: Yes
   Inside Screen Reader: No
Graphics Card: VIA/S3G UniChrome Pro II IGP
    Version: 6.14.10.385
    Check: Not Supported
Installed Acrobat: C:\Program Files\Adobe\Acrobat 11.0\Acrobat\Acrobat.exe
    Version: 11.0.0.379
    Creation Date: 2012/09/23
    Creation Time: 8:43:44 PM
Locale: English (Australia)
Monitor:
    Name: VIA/S3G UniChrome Pro II IGP
    Resolution: 800 x 480 x 60
    Bits per pixel: 32
OS Manufacturer: Microsoft Corporation
OS Name: Microsoft Windows XP Professional
OS Version: 5.1.2600 Service Pack 3
Page File Space: 2203236 KB
Processor: x86 Family 6 Model 10 Stepping 9 CentaurHauls ~1496 Mhz
Session Detail:
   Boot Type: Normal
   Is Shutting Down: No
   Network: Available
   Inside Citrix: No
   Inside VMWare: No
   Remote Session: No
   Remote Control: No
System Name: YOUR-1561454D88
Temporary Directory: C:\DOCUME~1\OQOuser\LOCALS~1\Temp\
Time Zone: Pacific Standard Time
Total Physical Memory: 911792 KB
Total Virtual Memory: 2097024 KB
User Name: OQOuser
Windows Detail:
   Tablet PC: No
   Starter Edition: No
   Media Center Edition: No
   Slow Machine: No
Windows Directory: C:\WINDOWS
Installed Plug-ins
C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\Accessibility.api
    Version: 11.0.0.379
    Creation Date: 2012/09/23
    Creation Time: 8:43:52 PM
C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\AcroForm.api
    Version: 11.0.0.379
    Creation Date: 2012/09/23
    Creation Time: 8:43:54 PM
C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\Annots.api
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    Creation Date: 2012/09/23
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C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\DigSig.api
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    Creation Date: 2012/09/23
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C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\EScript.api
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    Creation Date: 2012/09/23
    Creation Time: 8:43:52 PM
C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\IA32.api
    Version: 11.0.0.379
    Creation Date: 2012/09/23
    Creation Time: 8:43:52 PM
C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\PPKLite.api
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C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\SendMail.api
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C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\Updater.api
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    Creation Date: 2012/09/23
    Creation Time: 8:43:54 PM
I can easily see 2 matters which an inexperienced support desk staff member could home in on.
Acrobat XI Pro system requirements include
1024x768 screen resolution and
Internet Explorer 7, 8, 9, or 10; Firefox Extended Support Release; Chrome
Well my OQO report above includes
Display Detail:
   Screen Width: 800
   Screen Height: 480
and leaves blank
Default Browser:
(actually Firefox 17.0.1)
Yet 'Firefox Extended Support Release' is described by
Mozilla:
'Who is it not for?
Individual users who always want the latest features, performance enhancements and technologies in their browser without waiting for them to become available in ESR several development cycles later.'
http://www.mozilla.org/en-US/firefox/organizations/
Since starting this post, I loaded Adobe Acrobat XI Pro on another similar computer I own and use regularly. This was in a dock and connected to an external display. Same problems and reports experienced.
'Systems Report' for this installation follows:
Account Detail:
   User Rights: Admin
   User Account Control: Undefined
   Process Integrity: Undefined
   Profile Type: None
Acrobat Detail:
   Sandboxing: Off
   Captive Reader: No
   Multi-Reader on Desktop Support: Off
Available Physical Memory: 614280 KB
Available Virtual Memory: 1988144 KB
BIOS Version: OQO    - fe60019
Default Browser:
Default Mail: Outlook Express
    %ProgramFiles%\Outlook Express\msoe.dll
    Version:
Display Detail:
   Screen Width: 1280
   Screen Height: 1024
   Number of Monitors: 1
   Number of Mouse Buttons: 8
   Has Mouse Wheel: Yes
   Has Pen Windows: No
   Double Byte Character Set: No
   Has Input Method Editor: Yes
   Inside Screen Reader: No
Graphics Card: VIA/S3G UniChrome Pro II IGP
    Version: 6.14.10.358
    Check: Not Supported
Installed Acrobat: C:\Program Files\Adobe\Acrobat 11.0\Acrobat\Acrobat.exe
    Version: 11.0.0.379
    Creation Date: 2012/09/23
    Creation Time: 20:43:44
Installed Acrobat: C:\Program Files\Adobe\Reader 10.0\Reader\AcroRd32.exe
    Version: 10.1.3.23
    Creation Date: 2012/04/04
    Creation Time: 16:53:54
Locale: English (United Kingdom)
Monitor:
    Name: VIA/S3G UniChrome Pro II IGP
    Resolution: 1280 x 1024 x 60
    Bits per pixel: 32
OS Manufacturer: Microsoft Corporation
OS Name: Microsoft Windows XP Professional
OS Version: 5.1.2600 Service Pack 3
Page File Space: 2006176 KB
Processor: x86 Family 6 Model 13 Stepping 0 CentaurHauls ~1496 Mhz
Session Detail:
   Boot Type: Normal
   Is Shutting Down: No
   Network: Available
   Inside Citrix: No
   Inside VMWare: No
   Remote Session: No
   Remote Control: No
System Name: OKETT143
Temporary Directory: C:\DOCUME~1\oqo\LOCALS~1\Temp\
Time Zone: AUS Eastern Standard Time
Total Physical Memory: 911792 KB
Total Virtual Memory: 2097024 KB
User Name: oqo
Windows Detail:
   Tablet PC: No
   Starter Edition: No
   Media Center Edition: No
   Slow Machine: No
Windows Directory: C:\WINDOWS
C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\Accessibility.api
    Version: 11.0.0.379
    Creation Date: 2012/09/23
    Creation Time: 20:43:52
C:\Program Files\Adobe\Acrobat 11.0\Acrobat\plug_ins\Updater.api
    Version: 11.0.0.379
    Creation Date: 2012/09/23
    Creation Time: 20:43:54
(I did not bother installing plug-ins and deactivated installation before removal of program.)
With 5 installs producing the same error reports, I am convinced Acrobat XI Pro won't work for me on my computers and have little confidence of useful support from Adobe.
THERE ARE SO MANY GLARING PROBLEMS WITH MY INSTALLATIONS WITH THE SUPPORT DESK'S RESPOSES UNHELPFUL AND UNINFORMED. I REALLY DON'T ENJOY DOING ADOBE'S QUALITY CONTROL FOR THEM FOR FREE, BUT I CONTINUE TO POST HERE IN THE HOPE THAT SOMEONE WITH REAL AUTHORITY WILL EVENTUALLY TAKE NOTICE AND ARANGE A FIX OF THE PROBLEMS.
15 Dec 2012 1409 local time.
Further feedback provided that 1Ghz memory preferred. Problem not addressed. Reply
Notes from Customer
Friday, December 14, 2012 7:07:57 PM PST
System reports at #12 on http://forums.adobe.com/message/4862987#4862987
Alert- although ordered in Australia from Australian site and paid in Australian dollars by MasterCard, Adobe chose without warning to process this payment through an overseas account incurring an extra foreign transaction charge for me.
Adobe support to date has been of no use and their billing practices unreasonably expensive.

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I am trying to control the flow rate of a Merck-Hitachi L-6200A HPLC pump. I already found a VI in this forum in the post listed below:
http://forums.ni.com/t5/LabVIEW/HPLC-pump-feedback-control/td-p/1612428
I set the pump switches according to the manual as well as I have switched the pump to remote mode. Also I adjusted the settings of my COM port in the windows system manager according to pump and LabView settings. The problem is, that the pump won't react do any signal sent from the computer. I used "free serial port monitor" to ensure that a string is sent througt the COM port. Does anyone have any idea what might be the problem here? I'd really appreciate some help. Thank you all in advance,
Greetings,
Hendrik
Solved!
Go to Solution.
Attachments:
pump protocol (SubVI).vi ‏16 KB

dubbehendrik wrote:The problem was apparently the type of string I sent to the pump. In the abovementioned discussion the space string was sent as "\s" but apparently it can directly be sent as " ".
Hi,
It is not the type of string, but how the string is displayed. \s and the space character " " are the same thing. It is mentioned in the response by johnsold in the link you had in your first post. http://forums.ni.com/t5/LabVIEW/HPLC-pump-feedback-control/td-p/1612428

Dual syringe pump control for sinusoidal volume flow rate

Hello All,
What I am trying to do is produce a sinusoidal volume flow rate using two syringe pumps simultaneously; one for the steady-state level (DC) and the other for the time-varying component (AC). I plan to produce the sinusoidal volume flow rate by iniating the steady-state flow rate from the direct controls on one syringe pump and using Labview to produce the AC component on a second syringe pump. One of the pumps that I have available to me is a Harvard Apparatus PHD 2000 syringe pump which does have unsupported labview drivers. Examining the Vi's for the PHD 2000, it looks like I can only set a continuous volume flow rate.
If anyone has experience with programming syringe pumps in Labview or advice on where to find useful reading sources, I would greatly appreciate your assistance.

Hi mpjoseph,
Regarding a specific example, it might be a bit difficult to find a lot of people who have been through that exact application. However, ni.com discussion forum search gave me the following results: http://search.ni.com/nisearch/main/p/sn/catnav:df/pg/2/q/syringe%20pump%20/sb/navsRel
Also, I've found this example program written for LabVIEW 8.0 online: http://astro.temple.edu/~shackman/downloads/HarvardPump.zip The main page is: http://astro.temple.edu/~shackman/downloads.html
You may have already seen these yourself, but I just wanted to show you what I have found so far. Perhaps if you had not seen them, it may at least start you off in the right direction.

Flow rate

Hello,
Does NI have any flow rate sensors to measure blood flow rate? If not, does any one know which company has these sensors?
Moreover, to receive the data from any sensor and process with LAbView what do i need? Do i need DAQ?
Thnaks

Hello utd,
NI doesn't provide blood flow rate sensors and I wouldn't know what sensor to recommend. You don't necessarily need a DAQ card, but in order to know if you'll need one, I would need more information regarding your sensor. Therefore, the first step would be to find an appropriate sensor. Some sensors may even be able to connect directly to your computer if they provide the proper cable, but many times the sensor outputs currents or voltages that DAQ cards read. Once the DAQ card reads this sensor output, you can process it and scale it accordingly. Here is a document that could be a good starting point:
http://www.ni.com/white-paper/3536/en
Other people also use discrete amplifiers, filters, and ADC's and then send the information to a computer port, but this can be much more complicated than using DAQ. Good luck on your sensor search!
Andres G
Applications Engineer
National Instruments

Read Dictionary Meta Data with a Single Server Connection

Hello,
I've Enterprise Portal 6.0 SP4 NetWeaver Stack 2 Developer Workplace Sneak Preview from https://www.sdn.sap.com/sdn/downloads.sdn running on my computer and implemented the Tutorial: "Creating A Web Dynpro Application Accessing ABAP Functions" from https://www.sdn.sap.com/sdn/developerareas/webdynpro.sdn?page=TutWD4_AccessingABAP.htm.
During the setup of the JCo Conneciton for the WD_FLIGHTLIST_RFC_METADATA_DEST in the Web Dynpro Content Administrator in Step 3 I came across the problem that I can not use a Single Server Connection to read Dictionary Meta data.
So my Question: Why is it not possible to read Dictionary Meta Data with a Single Server Connection?
Regards
Gregor

Hi Ruth,
Thanks for the guideline.
I entered an entry in the etc/service file on the m/c which is having SAP WAS 6.40 J2ee installed.(let say ip address 172.16.1.38)
for e.g.
sapmsSA1 3600/tcp
I restated the webAS server.
Then from SAP GUI when i am connecting to SAP R/3 backend system and checking the 'smlg' transaction.....i can see 3 Logon groups with the same name 'PUBLIC'.
Now i have created the BC Message server connection in SLD with this information.
caption - SA1 01
Message server IP = 172.16.1.242
port 3600
After that i specified this message server information to WD_MetaData connection in JCO content administrator.
When i tetsed this connection it gives me error as follow.
com.sap.mw.jco.JCO$Exception:(102) RFC_ERROR_COMMUNICATION: Connect to SAP gateway failed
connect_PM TYPE=B MSHOST=172.16.1.242 GROUP=PUBLIC R3NAME = SA1 MSSERV=sapmsSA1 PCS=1 LOCATION CPIC(TCP/IP)on localhost with Unicode ERROR partner not reached(host 172.16.1.38,service sapgwoo)
connection refused
can u guide me what i am missing?
Thanks,
Mital.

Problems Reading gas meter flow rate ni 9402 counter

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