Calibration of the scxi-1520 and scxi-1314

Similar Questions

• SCXI-1314 ground wire

  Hello

  We try to understand what position signal name to use for our ground wire. Should we attach ground wires to safety ground? Alternatively, do we even need to use the ground on a fullbridge gauge wire?

  Thank you!

  Gauges of full-bridge and load cells have usually 4-wire, Signal +, Signal-, excitement +, and excitement - these four sons are all that are needed to get a reading from the gauge.

  Connections for these sons are detailed in the manual of the SCXI-1314 module

  http://www.NI.com/PDF/manuals/322859a.PDF

  If there is a separate ground of the sensor can have a shielded cable. The reference guide for wiring here to learn more about review of termination and noise shield.

  Field guide for wiring

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

  In my experience where to connect the shielding is a very debated topic, but my understanding is as follows.

  IF the sensor is grounded, connect the shield to the sensor ONLY.

  Connect the shielding to BOTH the sensor and the chassis of the device of data acquisition on the ground IF the sensor is floating.

• Change the type of sensor pressure strain for SCXI-1314

  Hello!

  I would like to ask how to change the type of strain sensor.

  I use SCXI-1314 and one of my pressure sensor is a type of 4-wire. (Output 100mV, excitement: 10vdc)

  , but I want to replace the sensor by another type of current output type. (Output 4 ~ 20mV, excitement: 12-30Vdc)

  I checked the output voltage cable 4. (Defined as full-bridge OR max)

  Power + = Ex +.

  Food - = Ex-

  CH+        =  S+

  CH-         =  S-

  However, I don't know how to connect the type 2-wire with SCXI-1314.

  In addition, I don't have enough experience on the types of bridge (bridges and whole, quarter half)

  Can you explain what I need to do?

  One thing you migth try is to put a 5 Ohm resistor in the current loop. causing a drop in voltage 100mV on resistance, however check the soil conditions.  Since you will need a new calculation of sensitivty sensor anyway you can use a resistor 4.7 Ohm or 2 10 ohms in parallel... just find a good match between your 1314 input voltage range and the 4-20mA.

  And you will have an external power supply for the sensor.

• Using the SCXI-1520 module for measurement of torque

  Hello

  I'm working on a project that requires a measument couple in real time on a speed-shaft drivetrain configuration phase.

  I have the SCXI-1520 module, and I think with a with a configuration of full-bridge strain gauge to do this.

  The problem is that it is not possible to connect to a real-time measurement, so my first solution was using some sort of wireless transmission to receive data in the SCXI-1520 module

  The Arduino + Xbee seems to be the best way to go, but at the same time, I think I might have a few problems of conditioning of the signal while transmitting data to LabVIEW through the SCXI-1520.

  Don't you think it's the best way to do it, or is there a better solution?

  Thank you!

  Hi Kenny,

  What type of operating system are you using? When you say 'Real time', do you mean look at a signal when it occurs? If you use communication networks, you will not be able to get truly control in real-time because communication networks is not deterministic, and you cannot guarantee the synchronization.

  If you try to get a signal and he discovers that you buy it, you should be able to use the Arduino and LIFA with LabVIEW. Adding the SCXI-1520 will not add any additional resolution in this circumstance.

  Best regards

  Anna L

• Rear connector of the SCXI-1520 module as input?

  Good morning,
  
  Regarding connectors on the SCXI-1520, is it possible to use the rear connector as a 68-pin input (instead of an output)? 
  
  I have the following hardware and wanted to know if it's feasible to pipe a signal from an SC-2345 to a PC through the path below.
  
  NI SC-2345 (Signal Cond. Block)  --> NI SCXI 1520 (Universal Strain/Bridge) via 68-pin cable   -->  NI SCXI 1600 (USB Digitizer Card) --> PC
  
  Thanks
     
  

  Hello hma1,

  Unfortunately, you will not be able to do.  The only "entry" would be taken in chassis cascading signals.

• Can a module SCXI 1102 with a block of 1303 b cause some channels of reading of the voltage signals and other signals of current reading at the same time?

  Hello

  I'm trying to use two sensors of moisture Omega HX85BA and experience two CFI mass flowmeters in current loop. Humidity sensors have three outputs 0 - 10V, while flow meters have two outputs 4-20 Ma. Can I have all four sensors to wire to the same block of connection SCXI-1303 and read all the signals in the same VI? the block is connected to an SCXI 1102 b card and a 6052E DAQ of NI PCI card.

  Thanks in advance!

  Hello BBalmforth,

  Yes it can. Although you will need external resistances (I recommend resistors precision for better accuracy) for current signals. The SCXI 1102 b is indirectly measuring the current by measuring the voltage drop across the resistance. The table below describes the current diagram and how it will seek in LabVIEW and DAQ assistant.

  Wiring diagram

  

  LabVIEW

  

  DAQ Assistant

  

  Kind regards

  Izzy O.

  Technical sales engineer

  National Instruments

  NI.com/support

• multiplexing of the strain gages with the scxi-1001

  I am trying to write a MatLab program that uses the C++ functions.  I managed in the collection of data of an extensometer, but I do not understand how to configure the multiplexing.

  I use a DAQ, SCXI-1600 in a SCXI-1001 chassis with 9 input modules 8 channel universal bridge SCXI-1520.

  I know that the hardware is possible to multiplex all 9 SCXI-1520 for the acquisition of data because we did it in LabView.  I have currently no LabView on my computer.

  My question is:

  How labview use C++ functions to implement this material to record 72 straingage channels.

  That's what my code looks like:

  Clear, clc
  rate = 100
  time = 1

  If ~ libisloaded ('myni')
  DISP ('Matlab: load nicaiu.dll')
  [notfound, warnings] = loadlibrary ("C:\WINDOWS\system32\nicaiu.dll",...)
  "C:\Program NIUninstaller Instruments\Shared\CVI\include\NIDAQmx.h",...
  'alias', "myni")
  end

  cards = 1
  Chans = 8
  taskh (1) = uint32 (1);

  % This is the C++ function called from MatLab-> int32 DAQmxCreateTask ('master', taskh (1))

  [a, b, taskh (1)] = calllib ('myni', 'DAQmxCreateTask', "master", taskh (1))

  chains of % for both channels 0 through 7 on each and SCXI-1520 cards.

  taskchans = {'SC1Mod3 / ai0:7 ',' SC1Mod4 / ai0:7'};

  samples = time * rate;

  chanName = ";
  minV = - 10F-4;
  Discharge = + 10-4;
  excitV = 3;
  gageFactor = 2.09;
  iniBrdgV = 0;
  nomGageR = 350;
  poissonR = 0.3;
  wireR = 0;
  scaleName = ";

  DAQmx_Val_Strain = 10299;
  10065 = DAQmx_Val_FromCustomScale;
  DAQmx_Val_QuarterBridgeI = 10271;
  DAQmx_Val_Internal = 10200;
  DAQmx_Val_Rising = 10280;
  DAQmx_Val_FiniteSamps = 10178;
  DAQmx_Val_GroupByScanNumber = 1;

  % creation of extensometer (virtual) channel

  [c] = calllib ('myni', 'DAQmxCreateAIStrainGageChan', taskh (1), tank (taskchans (i)),...)
  chanName, minV, discharge, DAQmx_Val_Strain, DAQmx_Val_QuarterBridgeI...
  DAQmx_Val_Internal, excitV, gageFactor, iniBrdgV, nomGageR, poissonR...
  wireR, scaleName);

  % set samplerate and number of samples
  for i = 1:cards
  [a, b] = calllib ('myni', 'DAQmxCfgSampClkTiming', taskh (i), cm, rate, DAQmx_Val_Rising,...)
  DAQmx_Val_FiniteSamps, samples)
  end
   
  Disable the trigger for the start of the %
  for i = 1:cards
  [a] = calllib ('myni', 'DAQmxDisableStartTrig', taskh (i))
  end

  % create variables to read data

  readarray1 = Ones (CARDS, Samples);
  readarray1_ptr = libpointer ('doublePtr', readarray1);
  arrayLength = samples;

  sampread = 0;
  sampread_ptr = libpointer ('int32Ptr', sampread);
  void = [];
  empty_ptr = libpointer ('uint32Ptr', Empty);

  Organization and reading raw data
  strain = ones (maps * chans + 1, samples);
  t = 0:1 / rate: time-1/rate;
  Strain(1,:) = t;)

  for i = 1:cards
  [readarray1, sampread, empty] = calllib ("myni', 'DAQmxReadAnalogF64', taskh (i),-1,-1,...)
  DAQmx_Val_GroupByScanNumber, readarray1_ptr, empty_ptr, sampread_ptr, arraylength);
     
  strain (chans * i-(chans-2): chans * i + 1, :) = readarray1;)
  end

  % Stop all tasks

  for i = 1:cards
  [a] = calllib ('myni', 'DAQmxStopTask', taskh (i));
  If a == 0
  fprintf (' slaughter task %s...) OK \n ", tank (j (i)));"
  on the other
  fprintf (' start task %s...) Failed \n ", tank (j (i)));"
  end
  end

  % Clear all tasks

  for i = 1:cards
  [a] = calllib ('myni', 'DAQmxClearTask', taskh (i));
  If a == 0
  fprintf (' task claire %s...) OK \n ", tank (j (i)));"
  on the other
  fprintf (' task claire %s...) Failed \n ", tank (j (i)));"
  end
  end

  It is the General form of my code.

  I tried to do one task per channel, but I can start only one task at a time.

  I tried to use DAQmxSwitchCreateScanList and DAQmxSwitchSetTopologyAndReset.

  -> but I don't know what the name of device for the switch.

  If anyone can explane how all these SCXI-1520 multiplex LabVIEW cards that would help a lot.

  Thank you.

  OK, I found the solution to this problem.

  The SCXI-1600 multiplexes based on which channels have set you up.  I simply add all 72 channels to the taskh (1) with the function DAQmxCreateAIStrainGageChan (...) then my samples are multiplied by the number of channels, I added.

• Outref pin the SCXI-1540 module

  Hi all

  According to the manual on the rear connector of the add-on SCXI-1540 is a PIN (19) described as OUTREF.

  It connects directly on spindle AISENSE E series data acquisition cards.

  But there is no mention of this PIN in the manual.

  Is it possible to generate a voltage ref in the scxi 1540 and thus a measure of NRSE on data acquisition?

  Is there any detailed of the circuit diagrams of the module scxi-1540 so that I can see whats up with this PIN outref?

  see you soon

  Frank Greenslade

  Christchurch

  New Zealand

  Hi Frank,.

  So first of all, you can certainly use the Ref Out as your floor floating for NRSE measurement.  If we look at the considerations of field wiring tutorial, he talks about these configurations a little more away.  I have trouble understanding what you're trying to reach beyond that.

• How to replace the SCXI-1600?

  Since our IT obliges us to switch to Win7, 64-bit edition, our SCXI-1600 becomes unnecessary because there is no 64 bit driver (Sidenote: the device is still available in the online catalog without obvious by the lack of such a driver warning). in an another tread on this subject, Seth_B advise

  For example, the USB-6251 device mass termination that provides 5 x faster sampling with 7 x better accuracy, USB 2.0 transfer speeds of data transfer more reliable and is only about $300 more including the cable between the DAQ hardware and the SCXI chassis.

  I need more information - I don't understand how exactly who will replace the SCXI-1600 as a connection to the SCXI block, for me, it looks like an ordinary e/s USB device must connect directly to several types of e/s analog and digital through a CBS. What cable should I connect the chassis SCXI containing other maps, how she will turn upward in MAX - in short: I need to decide if the replacement is more trouble with respect to particular software rewriting labview and other efforts that fight OUR guys to keep the System 32 bits for this testbed.

  Hello MBohnet,

  To avoid work or acquisition of new equipment on your part then I would recommend against your IT Department to maintain 32-bit system.

  If you need to upgrade to Windows 7 64 bit then the 6251 is an option at your disposal to communicate and scanning information of you modules SCXI.

  There are steps for setting this up

  1. Remove the 1600 chassis.
  2. Fix a module SCXI-1349 in the back one of the SCXI modules. Then use an SH68-68-EPM cable (the cable is listed on the pricing for the device 6251 tab) to connect the SCXI-1349 module to the PCI-6251.
  3. Your configuration in Measurement & Automation Explorer would be alike in what concerns the addition of your device, but you will point to the 6251 as the digitizer.
  4. The quote above regarding the (5 x faster sampling rate) applies only when using the USB-6251 in parallel mode.
  5. You wouldn't have to make changes to code with switching on the material element.
  6. Also, if you are not connected to the USB take a look at the PCIe-6320 or PCIe-6341 with the SHC-68-68-EPM cable. They are less expensive than the USB-6251 housing alternatives.

  Kind regards

  Izzy O.

  Technical sales engineer

  National Instruments

  www.NI.com/support

• The SCXI-1530/1531 devices support

  Hello

  I found confusing information on the SCXI-1530 support software. Now it is entirely supported by the Traditioanl DAQ and DAQmx?

  I found that some document said that "DAQ traditional only when you are using an SCXI-1530, SCXI-1531 or SCXI-1540 device with accelerometer, linear voltage differential transformer (LVDT) or the virtual channels Rotary variable differential transformer (RVDT), which are not supported by NOR-DAQmx.» It should be outdated information?

  Thank you

  Hi Oly,

  To be sure, it would help if I knew what document you look. However looking at the Readme for DAQmx looks the SCXI-1530 is supported only for accelerometers and microphones, which means that the LVDT and RVDT task are not available.

  NOR-DAQmx 9.0.2 ReadMe

  http://FTP.NI.com/support/softlib/multifunction_daq/nidaqmx/9.0.2/Readme.html

  Hope that helps,

  Thank you

  Scott M.

• Is - what antialiasing does not work for the scxi 1141?

  Hello

  uses a chassis PXI-1052 with a DAQ 6052E for dynamic analysis.  I use a module SCXI 1140 cascading with a filter of 1141 , SCXI and 1120 SCXI D amplifier. My goal is to achieve low noise, filtered data. I have set up my gear so that data travels in SCXI 1120D ahead in parallel with the SCXI - 1141 and in parallel with SCXI 1140. In short, I want to test if the smoothing works. I generated a sinusoidal data with a frecvency of 600 Hz rates and sample of 1024 and I got an alias of 424Hz. The filter is disable. The alias does not disappear when I activate the filter with a cut-off of 500 Hz frecvency. What's wrong. What is antialiasing working for this module? My channels is set to traditional NI-DAQ title.

  Hi Avi,

  I'm having a hard time trying to reconstruct how samples are defined and how your signal is actually routing through material.  Is the 1120D on the front of the 1141 and then the 1140 is in the slot next to those?  You said there were many things in parallel and now I'm confused.  Thanks for the clarification!

• 6361 versatile usb data acquisition does not automatically detect the SCXI chassis/accessories

  versatile usb data acquisition 6361 will detect automatically SCXI chassis and accessories?

  Hello kdCMC,

  As far as I know that the SCXI-1600 USB Module is able to auto-detect SCXI Modules.
  This is also mentioned on page 11 and 12 of the following SCXI to start document:
  http://www.NI.com/PDF/manuals/373236m.PDF

  All data (including USB-variants such as the NI USB-6361) have only a 68 pin shielded cable (IO) between the DAQ hardware and the SCXI chassis.
  This cable does not auto-detect opportunities since it basically just "transfers analog and digital signals" between SCXI chassis and DAQ hardware.

  Is there a specific document that created the confusion on this subject?

• Error - 10401 with the SCXI-1600

  Hi all

  I have a system of aquistion of data based on the SCXI-1600 and already work with LV6.1 software and I want it to be used with LV12 improve.

  When I tried to record data using MAX I have, it works very well. but trying to save data in labVIEW with function "I acquire waveforms", it gives me error attached 10401.

  can someone help me solve this problem?

  Thanks in advance,

  Ahmed Elsayed

  This function is part of the outdated traditional DAQ driver and your image shows DAQmx is active for the device. You should carry all your code to use DAQmx. DAQmx was introduced with LabVIEW 7. If you choose to stay with the outdated driver, you will need to do a reset and switch drivers, but assistance will be limited.

• is there a protection on the channels of the excitement of the scxi-1540 module

  Hi all

  Is there a protection integrated in the circuit of the SCXI-1540 so that if the primary winding of an LVDT short-circuit and the excitement of the 1540 will not be destroyed.

  Kind regards

  Frank Greenslade

  Christchurch

  New Zealand

  Hi Frank,.

  The SCXI-1540 module provides excitement, so the same amount of excitement is provided by the module, even if the LVDT shorts.  No additional current should come.  Hope this helps!

• Accuracy of measurement of the SCXI-1100 module

  Dear team,

  I'm figuring an accuracy of measurement for SCXI-1100 (http://digital.ni.com/manuals.nsf/websearch/0790D3C92CF4B16E8625665E00712865) devices.

  It is not described in the standard table, it has precision stage of entry / exit (must be added?). I can't reach a precision which is a result of precision calculator. If you have any equatuions / examples please post.

  Concerning

  Michal

  Hi Michal,

  I'm not sure I understand your question. Are you trying to calculate the accuracy of the SCXI-1100 module, but you do not have the data specification for the calculation, or you don't know how to calculate the accuracy?

  If you need performance data, you can consult the technical data sheet 1100 SCXI. If you want to calculate your accuracy of the device, I can recommend you following KB: How can I calculate absolute precision or the accuracy of the system?

  I hope that this is the info you are looking for.

  Kind regards

  D. Barna

  National Instruments