Temperature convection Subvi

Similar Questions

• Simulation of temperature

  This is a homework problem Yes, I have summer through readings and I can't figure out how to do this.

  We are able to use the temperature simulated in the activity file, I don't see where comes the thermometer and I want fills the degrees right now (F) to degrees (C). I know that the formula, but for the life of me I don't ' know how I plug it.

  Suggestion 1. Always have the help context window open when programming.  If the window is open and you move the tool of wiring on the cut wire, the Help window will tell you something about the cut wire. In this case it will tell you that the source is a scalar and the sink (graphic) requires a table.

  The challenge will be to get your data into a table.  I'll think about how to do

  Suggestion 2. Index in array are integers. The point of coercion at the entrance to the index of the function Index Array tells you that LV is to convert one data type to another.  In this case, you're probably OK, but you should still understand what stress and be able to explain its consequences.  Better would be to use the appropriate data type.

  Suggestion 3. The note inside the while loop mentions the call of a Subvi.  It is also a clue on a way to deal with the problem addressed in the proposal 1.

  Lynn

• Scaling of voltage of the thermocouple before voltage to temperature conversion

  Hello

  I have a module of data USB-6211 acquisition entry with Labview 8.6, and I will measure temperatures using a type R thermocouple.  Because this thermocouple voltages are very small (about 0-20 mV), I'll use an external amplifier (50 x gain) to transform the signal to 0-1 V, then read the entries using the module of data acquisition.

  At this point, I can divide the signal by my (x 50) gain and use inverse polynomials for thermocouples of type R (published online: http://www.omega.com/temperature/z/pdf/z198-201.pdf) to convert pressure into a temperature.

  However, I noticed that Labview has built in thermocouple modules.  There is a stage of creation of task, and the task is sent to a module that allows me to specify the thermocouple type, value CJC etc, then a sample clock, then a sampler with analog wafeform (see below).  I would use this structure, rather than coding in polynomials.   However, I can't find a way to divide my my (x 50) gain input voltage in order to give the thermocouple module reasonable voltage values.

  Is there a simple way to do this, or I'm better just a coding in polynomials?

  Thank you!

  

  Amplify the signal, read the voltage, then divide by 50.

  No need to code polynomials.  Search for pallets for the Subvi convert Thermocouple Reading.VI

• How to use ctrl val.get on a Subvi running?

  Hello

  I try to use the Val.Get of control 'Node to invoke' method on a Subvi running to get the values of certain controls to display in a tab. Does she not get the value of the control, it is not updated during the Subvi execution. This particular Subvi displayed a few temperature readings (because now it is just connected to a generator of random numbers for debugging reasons). I have attached my files and I'd appreciate any help I can get. Ultimately the purpose of this exercise is to display a large number of readings of temperature on several tabs with the tab before showing some summary information.

  Thanks in advance,
  Chad

  Try something like this...

  

• How to give the option to the user to select the measures of temperature or voltage with NEITHER cDAQ-9178

  Hello. I wrote two programs for the NOR cDAQ-9178 that work perfectly, but now I would like to combine... and users the ability to perform a measurement of the temperature (module NI 9214) or a measure of tension (NI 9201 module). I tried to use an Enum to a case Structure control, where the

  user can choose either 'Measure the temperature', or 'Measure the tension', but during execution of the program, only the before user input panel opens and the program stops. Could someone please look at the code below and give me advice on the placement of my two programs in a structure of case? Each program contains two screws... a Subvi user input and a measure vi. Is it possible for me to drag the temperature and tension screw in the structure of matter? Thank you.

  FYI - I am reposting this, because I couldn't get tethering to work on my previous post

  I found my solution. I had to right click on the Subvi vi... 'Subvi node Setup' and select set the front panel

• How to make a USB-TC01 temperature data a global variable?

  Hi all!  I have a simple question (probably).  I bought the box USB-TC01 and with the software came a VI called LabVIEWTempLogger.  This VI reads a thermocouple voltage and internal conversions using DAQmx and a CYC edge to give a reading of simple temperature.  My problem is that I want to use this temperature in an another VI, then I want to make a global variable of temperature of LabVIEWTempLogger.  How to set a global variable such as temperature of LabVIEWTempLogger?  Thank you!

  You must get out of the recorder temperature VI the DAQ Assistant. Put it in a Subvi if you wish.

  Your main VI has some problems. The first fact a comparison is equal to the current temperature. Never make an equal comparison on a floating point number. Use in the range and force.

  The local 'Set Temp deg C' should be replaced by a wire from the Terminal. All local variables should be replaced by a wire. You can easily have the cable terminals from outside the main loop.

  Can't the difference in code in the States True and False when you read voltage.

  Don't use VISA bytes to the Serial Port. It's just bad style. You programmed it for a terminal character LF to get rid of fixed forward and set the number of bytes to read at a high number. Playback will wait until the stop character is detected and then automatically end.

  Finally, you have already created a world so I do not understand your questions about it.

• Build a data table in a Subvi

  OK first of all, I will say that I am very new to LabVIEW.  I only started using it last week.  I'm used to other programming languages, so if I use a terminology that is not common to LabVIEW, I apologize.

  What I try to do is to collect temperature data and determine when it reaches steady state.  I collect data from a thermocouple USB DAQ in a loop with a user defined number of iterations.  Each of these iterations will in a table.  The mean and standard deviation are calculated from this table.  Everything I say is done inside a while loop and the standard deviation is low enough for the while loop ends.

  It works perfectly, but, there is always a but, I wanted to turn construction calculations, an average and standard deviation of array in a Subvi so that I can use it sometimes as steady state is a big part of what I test.  Also in this way I don't have to have the data table appear on the front.  The question that I try to convey the DAQ data in the Subvi.

  No matter what help do this, or suggestions on a more elegant way to determine the State of equilibrium is greatly appreciated.  I have attached the VI in its intact form and a JPEG of it with the part I want to put in a Subvi converted (boxed) in red.  Hope this is enough information and if you have any questions, concerns or suggestions, do not hesitate to post.  Thank you.

  -Kyle

  

  You take a single measure by the loop iteration, so to convert dynamic data to a single scalar rather than a table. Now you are left with a 1 d table after the loop and this whole mess to remodel is no longer necessary. All you nead is the Subvi to SD and the average which comes with LabVIEW and so you already have.

  You have a lot of conversions. "itérations" and "numeric" should be I32 (right clic... representation...) I32)

  This sequence of rube goldberg comparison is stupid. All you need is a single comparison "SD".<0.005" and="" wire="" the="" output="" to="" the="" loop="" termination="" condition.="" (btw,="" there="" is="" also="" a="" primitive="" for=""><>

  Seems silly to write all the raw numbers to a file every 10ms. It is probably enough for the 'means' in a log file.

  Why do you not use acquisition of single point and a loop FOR. You can not make an acquisition of hardware timed with points N and dT data, eliminating the loop FOR entirely?

• Préallouée Subvi in a loop

  I inherited the Labview 2012 code, and it runs slower that users would like. I have determined that by changing a certain Subvi to préallouée clone, it speeds up execution significantly. However, I want to assure you that I don't get myself having problems with it.

  I have attached a simplified snippet. Basically, the array of values is made up of temperatures, pressures, flow rates, calculated values. The Subvi consists of an instruction box with a number of different calculations that modify the output. The picture of the card determines the index values are used for the inputs & outputs.

  My question is:
  If the first iteration of the main loop changes an index in the array of values which is then used as input for the second iteration, Labiew will use the most recent value, or based on cloning it will use the older one?

  I won't run anything parallelized loop.

  Thank you

  Jacob

  You are the table storage in the shift register and passing a version of that in the Sub - VI.  So it will use the most recent value of the table.

  The prealloue Clone done create a copy of the VI everywhere where it is used.  Each have their own memory space and can operate in parallel.

  No concave only allows one copy of VI, meaning that it cannot have as a caller at a time.  If being called at several places, and then that happened there must wait the VI ends running before it can use it.

  The other reentrant option is shared Clone, which creates a "pool of cloning.  This is similar to the clone preallocated except that clones are created only when necessary.  This causes a small latency time more, but is more effective memory.

• Running a Subvi independently in a stacked sequence

  Of expensive Labviewer. We have an instrument that is controlled by a labview program. The program consists of a bunch of operations in sequence and each operation is implemented using sequences la_ROSE923/flat. At some point in the sequence, I want to ramp a furnace (owen) external to a given temperature, for a period of 5 to 10 minutes to do this, I did a Subvi who works for this purpose (using a while loop set). If I put the Subvi in the structure (sequence stacked/flat) all of the process holds it until my Subvi is finished, but I want the overall process to move to the next sequence just after starting Subvi. How do I implement that?

  Any help is highly appreciated

  Warmly optimistic

  Morgan

  You can use any loop in parallel.

• How to determine the maximum temperature in a row of 2 minutes?

  I make the following request:

  (1) temperature signal reads in all the 1 second, set in a while loop;

  (2) I want to assure you that in a consecutive 2 minute, the temperature value is always less than a value, say 10 degree C;

  (3) if she can meet the test, returns the value true, otherwise, continue to follow until it is true.

  Possible ways to define a 1 d array with 120 elements, but I would like to know if there is a more elegant way? I can't put the table in a Subvi, when it is destroyed once the Subvi is left. LabVIEW edition offers the function of calculation of "RMS" (everything is in a under VI) and I do not have the function used in this VI.

  If I understand the message of openness he wants to just wait that temperature is less than a threshold for at least 2 minutes, then exit?

  Something like this should do if that's the case.

  

• Updated entries on day of a Subvi with while loop

  Hi there guys! It's my first serious experience with LabVIEW, so the question may seem trivial to you, but it's not obvious to me how to solve this problem. So I do an installation that integrates a number of flow regulators, a temperature regulator, DAQ, some taps and a mass spectrometer basic tasks. All these must be automated using LabVIEW. I started by doing a VI for each separate task is going very well. Now I need to combine the latter in an experience of master VI, and of course I run into trouble.

  The problem is that I want of course to control this experiences with some selected buttons/dials/what is on the face before of the main VI. However, each of these VI runs a while loop in which fact acquisition of continuous/data communication / whatever. Of course, I want to change settings online. If I just naively tie them at the entrance to the Subvi these will be read only when the Subvi is started, not during each iteration of the while loop.

  I added a very basic example of the problem, so we are all on the same page. The main VI has a button, the State which should update something in the Subvi. However once the Subvi is started it takes control of the execution and the hand-VI seems to be ignored (appears to hang) even if the program has a lot of spare time to read the buttons and put on day of admission. What is the official solution for this kind of problem? My experience in programming that I prefer to keep the intact Subvi, so I can use it as a reusable standard library. Of course a similar question can requested the sub - VI output which will be updated only once the execution is completed (which is never during normal operation).

  PS. I'm using LABView 8.6 on XP

  The best way to set up a BT program must initialize first your settings, and then launch a while loop where you communicate/aquire data or whatever, then after the while loop is finished close and clean up your references.

  Inside the while loop, you can place your code in many of the screws and it is possible to run those in parallel, but I defenetly does not recommend the use of loops in slot face, especially without having to open the front panel or a stop test.

  If your code is completely executed up to your Sub - VI, the main.vi will wait for the sub - Vi ends before continuing the code.

• hourly temperature missing in the complication of weather watch bones 3

  Previous complication of time authorized tapping the current temperature displayed to go to a schedule which compose when typed recycled through hourly weather forecast temperature and all hours. Watch OS 3 the thermostat is absent, and I miss it a lot. Is it possible to configure?

  Hello

  Under watch OS 3, it must now, in the weather app, firmly press the screen to toggle the display between Condition, rain and temperature.

  If you want Apple to consider restoring the previous functionality, you can submit a request here:

  https://www.Apple.com/feedback/watch.html

• MacBook Pro lights at room temperature.

  Hello

  I had this problem with my late 2008 unibody Macbook Pro since last year that he only turns on when I use a blow dryer and blow directly to the logic board to increase its temperature to above 70 ° c/160 degrees Fahrenheit.

  I only found on this quick fix to turn it on a few days ago, before I had kept on for several months and as long as it's on it's a machine works well without any problems no matter what was the temperature of House of logic. I brought in a genius bar earlier for a verification of the material but they could not identify any problems.

  Any idea of what this could be the cause?

  Thank you.

  Just speculating, but maybe a cold or damaged joint to weld. When you heat, parts develop a connection. Cold, parts of contract, leaving a void in the weld joint.

  Take it to an authorized for assessment service center. Don't forget that your 2008 computer can be obsolete: Vintage and obsolete products - Apple Support

• Room temperature for SSD - iMac 2011

  I had a company local 'geek' install a 1 TB Samsung EVO 850 SSD in my iMac 2011 after the factory 1 TB WD HDD went belly upwards. The iMac works fine after installation, but the fan runs continuously. I think (and check with technician) they have not connect the thermal sensor that I understand other forums, there is a spare cable. anyway. I installed Mac Fan Control, which was extremely easy and place the SSD fan to operate "sensor value based on '-'Ambient '. the default value for the SSD shows the temperature the fan will begin to increase is 75 degrees F, with a temperature Max to 95 degrees f. once set the fan has appeased and now always so gently purr, but I wonder if the settings are correct.

  The Question: what would be the temperature for a SDS now in an iMac 2011? are the default settings listed above in the correct range? where can I find this info. I searched on the web...

  Thanks in advance.

  The vendor who installed the SSD correct wiring, the fan control installation should work (although I don't recommend generally), but the seller must install things correctly. after 2009 iMacs had HD with temporary sensors integrated in the HD, your SSD does not only so you are correct in your statement that he needs the heat sensor wire. OWC provides one with their kits.

  BTW, if you have taken your computer to Best Buy, which was your first mistake. I would not let any tech BBY within 5 miles of my equipment.

• iMac at VERY high temperature

  Is it a good idea for a temperature GPU iMac to go above 80 degrees and sometimes reach 90?

  If this Celsius, then no..

  These times are not good.

  Your iMac is overheating.

  Maybe all the different events are hooked upward with the dust and fluff?

  Maybe the inside of your iMac and its internal fans are inlaid upward with the dust, dirt and lint, too.

  If it's that get hot, it's time to look at have your iMac diagnosed and repaired.

  Your iMac may be required for some services to an Apple Retail Store or Apple authorized service center.

  I saw just that it's a fairly new iMac.

  How long have you had this?

  Do you have AppleCare on this iMac?

  Out of curiosity, when the time of your iMac get this high, what the room temperature where your iMac?