Resistance measurement using PXI2503

Similar Questions

• resistance measurement but value is not constant

  IM using the program attached in the image below, but the value of the resistance of the resistance measurement is not constant.  Also I don't understand what are a source of excitement and value. Also it is attached a picture of the items Im using.

  
  

• Current inaccurate measurement using Shunt resistance

  Hello

  I try to measure the power of a pressure sensor 4-20 my using the PCI - 6251 DAQ and 249 Ohm shunt resistance.  The measurements taken by the DAQ card are slightly lower than expected.  Performed by a digital multimeter measures appear to be more accurate.  I tried the two configurations in the link provided below.  I read on the common-mode voltages and ground loops to try to fix this problem without success.  Any help would be appreciated.

  http://zone.NI.com/DevZone/CDA/tut/p/ID/7077

  
  

• Current measurement using the NI 9203

  I'm trying to measure an output 4-20 mA, with a flow meter. I try to use DAQmx and in channel DAQmx-create, there is a shunt location option. Do I have to specify this setting if I use NI 9203?

  Thank you!

  You don't have to specify a location for the NI 9203 shunt resistance.  If you do not specify one, choose 'default' or 'internal '.  The 'external' option is for the configuration of a device of voltage (the NI 9205, for example) and plug in an external resistor.  You will be able to read the voltage at the terminals of the resistance and DAQmx would return data in amperes and do the math for you.

• resistance measurement USB-6009

  Using the DAQ 6009 to measure the resistance resistance?

  Sure.  You just need to know what you're doing.  In addition, it depends on what precision you're looking for.

• PT-100 resistance measurement

  
  

  Hi Raghunathan,

  You can find the following links to help you:

  Take measurements of temperature with the RTD: practical Guide

  With an RTD or thermistor temperature measurement

  In addition, it would be useful if develop you your condition a little more each time you post.

• Duty cycle of measurement using digital inputs DAQ

  Hi all!

  My system has a PXI-8269 card and I want to measure the duty cycle of the Digital PWM signal generated by a device.

  To acquire this signal, I'll use a digital DAQ (PFIx) instead of a counter of data acquisition (CTRx) (they are already used for other applications).

  The search of the database of examples, I found live who use meters. So I wonder if it is possible to do that and how could I.

  Thank you!

  Sorry, the correct reference is PXI-6289.

  I was determined to acquire a digital waveform, converting it to an analog waveform and then using the correct function in the range of functions->-> Analog wave.

  Thank you!

• Problem with calculation of measurement using instruction box

  Hello Experts
  
  I have a measure that calculates the percent of sales by State - "sale by States" / "Total sales" * 100 and the requirement is when the numerator of the measure is < 11 then it should be ' *'. I tried to write a next case statement case when sales by State < 11 THEN ' *' ELSE sales by State END / "Total sales" * 100. I get an error saying incompatibility of data type of ideas how I can make it work.
  
  Thank you
  RC
  
  Published by: user1146711 on July 12, 2012 07:39
  
  Published by: user1146711 on July 12, 2012 09:17

  Hi RC,.

  I used to have the same than the one that I solved it using the following statement hope, that it will aid.

  BOX WHEN ((ARRAY. NUMERATORCOLUMN< 11))="" then="" '*'="" else="" concat(cast(round((((numerator="" column)/(denominator="" column))*100),1)="" as="" char(50)),'%')="">

  Here the results of instruction box in the two values is * Alternatively, value (which is stored as varchar instead of the number data type).
  Have, so the results are varchar. you get no data type mismatch error.

  That, by your statement the case... A case get varchar and another survey number which is the offset. (Logic)

  I have concatenated with the '%' sign to show results under 15%, 16% and stores the same results (Varchar).

  I hope that this solves your problem. Please, attribute points. :) :)

  Let me know, if you still find problems.

• Calculation of measurement using the division and the instruction box

  Hello Experts
  
  I have a measure that calculates the percent of sales by State - "sale by States" / "Total sales" * 100 and the requirement is when the numerator of the measure is < 11 then it should be set to 0. I tried to write a next case statement case when sales by State < 11 THEN 0 ELSE sales by State / "Total sales" * 100. I get an error of syntax ideas how I can make it work.
  
  Thank you
  RC

  RC,

  It is always useful in the forum when you post your code and the associated error. Of what you provided; It seems that your case statement is missing from the end clause and it should look like this:

  SELECT CASE
            WHEN sales_per_state < 11 THEN 0
            ELSE sales_per_state / "Total Sales" * 100
         END
    FROM your_table
  

  Jeff

• Calc problem with fact table measure used in the bridge table model

  Hi all
  
  I have problems with the calculation of a measure of table done since I used it as part of a calculation in a bridge table relation.
  
  A table of facts, PROJECT_FACT, I had a column (PROJECT_COST) whose default aggregate is SUM. Whenever PROJECT_COST was used with any dimension, the appropriate aggregation was made at appropriate levels. But, no more. One of the relationships that project_fact is a dimension, called PROJECT.
  
  PROJECT_FACT contains details of employees, and every day they worked on a project. So for one day, employee, Joe, could have a PROJECT_COST $ 80 to 123 project, the next day, Joe might have $40 PROJECT_COST for the same project.
  
  Dimension table, PROJECT, contains details of the project.
  
  A new feature has been added to the software - several customers can now be charged to a PROJECT, where as before, that a single client has been charged.
  This fresh percentage collapse is in a new table - PROJECT_BRIDGE. PROJECT_BRIDGE has the project, CUSTOMER_ID, will BILL_PCT. BILL_PCT always add up to 1.
  
  Thus, the bridge table might look like...
  CUSTOMER_ID BILL_PCT PROJECT
  123 100.20
  123 200.30
  123 300.50
  456 400 1.00
  678 400 1.00
  
  Where to project 123, is a breakdown for multiple clients (. 20,.30.50.)
  
  Let's say in PROJECT_FACT, if you had to sum up all the PROJECT_COST for project = 123, you get $1000.
  
  
  Here are the steps I followed:
  
  -In the physical layer, PROJECT_FACT has a 1:M with PROJECT_BRIDGE and PROJECT_BRIDGE (a 1:M) PROJECT.
  PROJECT_FACT = > PROJECT_BRIDGE < = PROJECT
  
  -In the logical layer, PROJECT has a 1:M with PROJECT_FACT.
  PROJECT = > PROJECT_FACT
  
  -Logical fact table source is mapped to the bridge table, PROJECT_BRIDGE, so now he has several tables, it is mapped (PROJECT_FACT & PROJECT_BRIDGE). They are defined for an INTERNAL join.
  -J' created a measure of calculation, MULT_CUST_COST, using physical columns, which calculates the sum of the PROJECT_COST X the amount of the percentage in the bridge table. It looks like: $ (PROJECT_FACT. PROJECT_COST * PROJECT_BRIDGE. BILL_PCT)
  -J' put MULT_CUST_COST in the presentation layer.
  
  We still want the old PROJECT_COST autour until it happened gradually, it is therefore in the presentation layer as well.
  
  
  Well, I had a request with only project, MULT_CUST_COST (the new calculation) and PROJECT_COST (the original). I expect:
  
  PROJECT_COST MULT_CUST_COST PROJECT
  123. $1000 $1000
  
  I'm getting this for MULT_CUST_COST, however, for PROJECT_COST, it's triple the value (perhaps because there are quantities of 3 percent?)...
  
  PROJECT_COST MULT_CUST_COST PROJECT
  123 $1000 (correct) $3000 (incorrect, it's been tripled)
  
  If I had to watch the SQL, you should:
  SELECT SUM (PROJECT_COST),
  SUM (PROJECT_FACT. PROJECT_COST * PROJECT_BRIDGE. BILL_PCT),
  PROJECT
  Of...
  PROJECT GROUP
  
  
  PROJECT_COST used to work properly at a table of bridge of modeling.
  Any ideas on what I got wrong?
  
  Thank you!

  Hello

  Phew, what a long question!

  If I understand correctly, I think the problem is with your old measure of cost, or rather that combines with you a new one in the same request. If you think about it, your request as explained above will bring back 3 rows from the database, that's why your old measure of cost is multiplied. I think that if you took it out of the query, your bridge table would work properly for the only new measure?

  I would consider the migration of your historical data in the bridge table model so that you have one type of query. For historical data, each would have a single row in the bridge with a 1.0 BILL_PCT.

  Good luck

  Paul
  http://total-bi.com

• Variable overall station by the object to be measured using a model of batch process

  Hello

  I have 4 DUT which is tested by using individual ports of com I use global variables Station 4 to store 4 Com ports - COM port assignments are in no particular order and vary depending on the test PC station.

  Example:

  S1 = Com12

  S2 = Com14

  S3 = Com10

  S4 = Com9

  Using a model of batch process I want to test DUT all at the same time: I'm trying to understand what is the best/better way to S1 to S2 for UUT2, UUT1 and so on!

  Any help appreciated.

  Thank you best regards &,.

  Shane.

  The easiest way is to use the property Runstate.TestSockets.MyIndex to index a table.  Each socket of the batch will get an index (from 0 to n - 1, where n is the number of sockets) when it is created.  You can create an array (of strings? I can't tell if you just have channels or need a container) and use the property for the index in the array.

• Measure the resistance with PXI DMM 4072 on different frequencies

  Hi all

  I tried to get on board various and unable to find solutions for that. I'm trying to measure resistance using NI PXI-4072 on frequencey 1 kHz, but not luck. When I try to use Agilent LCR meter I see the correct value of the resistance.

  I've seen a few posts on this but don't have no satisfactory solutions.

  http://forums.NI.com/T5/Digital-Multimeters-DMMs-and/LCRmeter-test-frequency-for-resistance-measurem...

  In above post, someone said that I can use 4072 DMM OR digitizer, does not have a lot.

  Can someone please provide the right path for me to solve this problem.

  Thank you

  Hello Puneet_K,

  I checked the data sheet and the method of measurement described in the specifications of the NI 4070/4072 http://www.ni.com/pdf/manuals/371304g.pdf; indicates that the ability is measured using an alternating signal and select the test frequency range, for example 3 kHz, 1kH or 91 Hz. The resistance is simply measured using a DC signal, and it is often sufficient to measure the internal resistance of a battery. If you need a more flexible control for the measurement, you probably get a card like the function generator and then set a multimeter to measure the voltage and another DMM to measure the current and calculate the impedance of these values.

  I hope this helps!

  Kind regards

  -Natalia

• myRIO - measure unique output completed using differential input

  Hi all

  I had used myRIO 1900 to measure the power of the microphone, which varies from 0 to 5V (biased to 2, 5V).

  I used one of the analog input ports completed only connector MXP or B to read the value.

  A few reasons, I changed the microphone with amplifier and when measured using oscilloscope and other hardware DAQ, supply range of + 5V and - 5V.

  As the MXP is unable to read the voltage-ve, I realized that I need to change the connection to the MSP connector C.

  It is mentioned in the dataheet of myRIO we can measure up to differential Channels analog input +/-10 V.

  Although there are some reference materials available, I do not understand completely how to read the single ended output using differential input.

  Should I use no matter what op-amp or comes directly from their phone?

  Can someone kindly explain to me the differences and some references on how to connect!

  Although I tried to read through this white paper, I felt completely lost

  http://www.NI.com/white-paper/3344/en/

  Exit ended unique direct and/or the amplifier has 2 pins: GND and Vout

  Entered different a 3-pin: A +, A - and ALWAYS

  I had attached the screenshot of the form OP amp for your reference

  

  I think that you just connect your Vout to the + ve differential termination, MASS to Terminal - ve. (Briefly) An asymmetric measure is between the channel of GOT it and STILL while a differential measurement is between the + ve and ve - terminal. One measurement unit completed is referenced to GND is where you are measuring the tension of.

• Measurement of temperature using NI USB-6343

  Hi all

  Someone at - he temperature ever measured using an NI USB-6343 or something close to it? Encountered problems?

  I was reading on the device and it has been suggested that the conditioning of signals may not be required, and I'm a little worried...

  Normally I use a DAQ Agilent but this specific project, I'm working on that will require a unique moment and USB-6343 handles a majority of my problems along will be many examples of coding.

  -scrider

  Scrider,

  You want a device that has USB connectivity like the 6343? If so, we have several hardware based USB DAQ for thermocouples. The links below will show 3 devices, we have:

  http://sine.NI.com/NIPs/CDs/view/p/lang/en/NID/208177

  http://sine.NI.com/NIPs/CDs/view/p/lang/en/NID/201881

  http://sine.NI.com/NIPs/CDs/view/p/lang/en/NID/207471

  Now, I know that some of them will probably not ideal for your app, but I wanted to just give you options. It also depends on how fast you want your sample rate is. These devices are specific for the use of thermocouple, but you can still use them (excluding the tc01s) for voltage readings. I hope this helps!

• Using different filters on the same measure in single result table (view)

  I have a table of twelve columns, each column with different filters tailor-made same table actually. Say a filter column (several people existing on 01/01/2003) comes from people dimension (date_of_birth < = January 1, 2003 ""). Two filter in column b (number of people living in Bucharest between 1 January 2004 and 1 January 2006 "") is (between 2004 and 2006 date_of_birth) etc.
  How do I use column a & column b in the same table of results (view)? I need the different filters on the same table.
  
  Thank you!
  
  Published by: seiciu on March 27, 2010 08:51

  Hello
  This filter clause works.
  filter (using Date = current_date)
  filter (using Date = date'2010-01-01')
  filter (measures using the year between 2004 and 2006)
  Concerning