Is there a strain gauge bridge on the 6025E?

No, however, there are several ways in which you can perform a strain gage measurements with NI products, you can buy SCCs, which are small signal conditioning modules. There is a set of strain gauge modules that can serve that purpose. Depending on the number of channels you need to measure strain in you might want to go for SCXI, which will give you a much higher channel count and configuration options. There is an E-Series board with signal conditioning that will take care of that too. You can find plenty of additional information in this tutorial: Strain Measurement with a Strain Gauge. And of course, you can always just build a small Wheatstone Bridge
yourself.

Similar Messages

How to measure voltage changes using a NI-9219 with strain gauges and use the data in labview

I am updating an old LabView/Data Acquisition system that uses strain gauges to measure two forces (normal and axial) as well as two moments (Pitch and Roll). I am having trouble reading the voltage changes over my strain gauges using my NI-9219 as well as filtering the data with both a lowpass and smoothing filter. The program attached has the project and should have all the sub-vi's used in the program. This program was written on LabView version 8.5 and is being updated to a 2013 version of LabView. Also, the hardware previously used was a combination of a NI SCB-68 and NI USB-6251. If anyone could help me it would be greatly appreciated!
Attachments:
New SSWT.zip ‏751 KB

Hi Coffeyfj,
Did you ever had this set up working? The first thing that I would do as I mentioned in the previous comment would be to use one of the LabVIEW examples. I recommended to you using the (strain - Continuous Input.vi). If you can read any voltage changes with the example vi, then we will know the problem we are having is in your code. If you cannot read any voltage changes using the example I mentioned, we can start trouble shooting the hardware connections. Are you connecting the excitation voltage? If yes, Are you making the right connections. Please refer to page 19 of the following document (half and full bridge modes)
NI 9219 Operating Instructions and Specifications - February 2009
http://digital.ni.com/manuals.nsf/websearch/4197ED4BD126E0B486257546005851CA
Regards,
William Fernandez
Applications Engineer
National Instruments

Can anybody recommend me on the strain gauges which are attached along a steel bar, say, 3 mm in diameter, and can respond at a sampling rate of 100 kHz?

Or anybody has similar application, it would be very grateful if you can share your experience.

Many thanks for your information. We are about to investigate the dynamic performance of soil anchorage subject to dynamic impulse in a geotechnical centrifuge. Basically, 5 model anchorages (3 mm in diameter) are to be constructed. Each model anchorage is instrumented with 1 accelerometer, 1 load cell and 6 strain gauges. Therefore, the minimum instrumentation would be
1) 30 strain gauges
2) 5 accelerometers
3) 5 load cells
It is worth noting that all the instruments would eventually reside in a geotechnical centrifuge operating in a 10g gravitational field. Whilst the DAQ system would experience much less 'g force' since they are to be placed close to the rotation axis of the machine.
These model anchorages would be tested one by one dyn
amically on each individual basis, whilst the other four are also preferably to be monitored during the tests. For an active model anchorage which is under testing, simultaneous sampling is preferred for its 8 sensors to be measured at the same instant in time (Besides, it is also understood that the natural frequency of the model anchorage is estimated to be in the range of several kHz). For the other four model anchorages, simultaneous sampling could be less demanding. It would therefore be ideal that simultaneous sampling can be switched among the active testing model anchorages.
I am greatly appreciated if you can further advise me on this. Thanks in advance.

Error 200077 during Strain Gauge Calibration in Measurement and Automation Explorer V5.3.1f0

Hey Guyz!
I am experiencing a problem perfomring my shunt calibration using a 350ohm(GF 2) strain gauge connected with NI9949 and NI9237 in a NI cDAQ-9178 Hardware.
When i click on strain callibration under configuration-Device: R3 being my shunt of 100k ohm, i can measure the errors and calibration but when i hit the calibration tab, it gives me an error 200077 occured at Strain Gauge Calibration (see aatached jpeg file for the error type).
I don't know what is wrong, i have doublt-tripple checked my circuit, and have read the forums regarding the same error and have come across the "signal input range", in my case it is default kept at 1m max and -1m min. I am not sure how these values work.
Any guidance would be appreciated.
Thanks in advance.
Attachments:
error 200077.jpg ‏73 KB

Hi
This error code may be occurring due to the specified signal input range in max (-1m to 1m), being set to a value outside of the expected readings from your strain gauge.
Also the Gage Factor, Gage Resistance, Initial Voltage, Vex Source, Vex Value (V), Lead Resistance and Strain Configuration need to be configured based on your sensor specification.
This link gives more details on connecting strain gages to a DAQ device:
http://www.ni.com/gettingstarted/setuphardware/dataacquisition/straingages.htm#StrainGageCalibration
Hope this helps.
Andrew.N
Applications Engineer
National Instruments

My strain gauges (full Wheatstone bridge) give me a constant negative voltage

Hi, I'm currently trying to calibrate strain gauges to work with a one-axis tribometer...I'm using XP, LabVIEW 8.5.1, have the latest version of NIDAQmx and SignalExpress 2.5.1. Right now the strain gauges are hooked up to a SC-2043-SG signal conditioning board, which in turn is hooked up to a PCI 6251.
The problem right now is that while the computer recognizes the device and is getting output from it, I'm getting a constant negative voltage (-10.2 V or something like that). My configuration for the SC-2043-SG is as follows:
Custom voltage w/ excitation
-External excitation (can't switch to internal excitation source- apparently it doesn't exist even though I've set the switch on the board to INT)
-Full Wheatstone bridge
-Differential terminal configuration
-Not using ex for scaling
-Ex value is 1m
-Channel is ai0
I've currently got this set up in SignalExpress 2.5.1 and have been generating VIs from the task that I've made there.
Another odd thing is that the gauges don't seem to respond to when I put pressure on them.
So what I mainly need to know is
1) Do I have bad gauges?
2) Do I have an incorrect configuration?
I guess on a side note I've noticed that when I set the terminal configuration to RSE, the values oscillate around 0.08V. Should I use that instead and calibrate it from there, so that at least the configuration reads 0 by default?

Hi balaclava,
Since the SC-2043-SG is an older signal conditioning board
is does not support programmatic control of its excitation or settings. This is
why there is no internal excitation available to select in your DAQmx task. These
setting must be configured on the SC-2043-SG using the on-board jumpers.
You will want to set the jumpers for internal power and
excitation and set for full bridge gauges. More information on all of the
jumper settings can be found in the SC-2043-SG User Manual. Also page 30 of the
manual shows how to connect a full bridge sensor.
Once you have the SC-2043-SG configured correctly it then
does the bridge signal conditioning and provides the DAQ card with a voltage signal
referenced to AI Sense. You can measure this signal using a normal analog input
voltage task with the terminal configuration set to NRSE or RSE. It does not
provide the DAQ card with a differential signal.
Please let me know if you have any questions and take care.
Thanks,
Nathan
National Instruments
Digital Hardware Engineer

How do I connect 16 strain gauges in quarter bridge arrangement to a SCXI 1322 connecter block?

Specifically, do I connect 4 bridge completion resistors to each VEX- channel or do I need to wire them together somehow first?

I have attached a bitmap image that explains how to wire a quarter-bridge strain gauge to the SCXI-1122 (with 1322 terminal block.) The 1122 only provides half-bridge completion, so you have to wire an extra resistor into the circuit to complete the bridge.
You can find this image in the SCXI-1122 User Manual, which is available for download at:
http://search.ni.com/search/query.html?col=alldocs&qp=%2Bcontenttype%3Aproductmanual&lk=2&layout=ProductManual&qt=1122
Attachments:
1122_strain.bmp ‏920 KB

Using the convert strain gauge reading vi

I am having difficulty with wiring the convert strain gauge reading vi. Are there any examples of this vi showing how to connect it?
thanks
HS
Solved!
Go to Solution.

Have you consulted the help file on it?
http://zone.ni.com/reference/en-XX/help/371361G-01/lvinstio/conv_strain_read/
There don't appear to be any stock examples using it, but the help files for these VIs can be VERY helpful.

Hi there, I cannot open bridge and I get this warning, "Adobe Bridge Cannot be Opened because of a problem. Check with the developer to make sure Adobe Bridge CC works with this version of Mac OS X. You may need to reinstall any updates for this applicati

Hi there, I cannot open bridge and I get this warning, "Adobe Bridge Cannot be Opened because of a problem. Check with the developer to make sure Adobe Bridge CC works with this version of Mac OS X. You may need to reinstall any updates for this application and Mac OS X" although bridge has been running on my Mac for over a yera. I have installed all current updates for Mac and reinstalled Bridge again from CC and still get the same issue? Any advice?

Would you please provide details about your setup?
BOILERPLATE TEXT:
Note that this is boilerplate text.
If you give complete and detailed information about your setup and the issue at hand,
such as your platform (Mac or Win),
exact versions of your OS, of Photoshop (not just "CS6", but something like CS6v.13.0.6) and of Bridge,
your settings in Photoshop > Preference > Performance
the type of file you were working on,
machine specs, such as total installed RAM, scratch file HDs, total available HD space, video card specs, including total VRAM installed,
what troubleshooting steps you have taken so far,
what error message(s) you receive,
if having issues opening raw files also the exact camera make and model that generated them,
if you're having printing issues, indicate the exact make and model of your printer, paper size, image dimensions in pixels (so many pixels wide by so many pixels high). if going through a RIP, specify that too.
etc.,
someone may be able to help you (not necessarily this poster).
a screen shot of your settings or of the image could be very helpful too.
Please read this FAQ for advice on how to ask your questions correctly for quicker and better answers:
http://forums.adobe.com/thread/419981?tstart=0
Thanks!

Bridge CS6 crashing when there is a GIF file in the folder.

Out of the box, Adobe Bridge has been crashing "randomly" when opening folders.
To pinpoint the cause of the crash, I created a new folder and dragged the files one by one from one of the other folders that crashed Bridge.
It all works fin until I drag a GIF file, then it just stops responding and crashes immediately.
I have tried with several different GIF files, and they all seem to crash Bridge.
Any ideas of any settings to stop this from happening?
I, of course, need to work with gifs, so filtering those out is not a solution.
Thanks!

THanks for your answer,
It seems to be any gif causing the crash, at least I haven't found one that doesn't crash it so far, here's an example:
It doesn't have to be animated either. Still gifs crash it too.
I'm using Windows 7 Enterprise, Service Pack 1, 64-bit OS, 24Gb RAM, Intel Core i7 CPU, I have a GeForce GTX 590 video card. I have a similar setup at my home office, and bridge seems to work just fine there (with the same files even).
I searched around here and I found issues popping up with Bridge and GIFs, but nothing answered or exactly like my problem. Weird.
Is there a way for Bridge to not try to render GIFs, but still show them so I can change metadata, open them in PS, etc?

When I open Bridge Master Collection CS6, I get the message: There was a mistake in Bridge, therefor the cache cannot be read. Try to erase the central cache to solve the problem.

When I open Bridge Master Collection CS6, I get the message: There was a mistake in Bridge, therefor the cache cannot be read. Try to erase the central cache to solve the problem. The solutions given by Adobe don't help me. Does anyone have another solution....????
Als ik Bridge open krijg ik een venster te zien met de boodschap: Er is een fout opgetreden in Bridge waardoor de cache niet kan worden gelezen. Probeer de centrale cache te wissen in de cachevoorkeuren om de situatie op te lossen. De oplossingen van Adobe verhelpen het probleem niet, heeft iemand anders een oplossing .....????
Alvast bedankt. Jaap Wals.

When launching Bridge, press and hold down Command-Option (Mac) or Control-Alt (Win) + Shift to choose “Reset Preferences”, Purge Entire Thumbnail Cache”, and/or Reset Standard Workspaces”.

In CS4 I had bridge on the top tool bar, How do I get it there in CS6

In CS 4 I had bridge on the top tool bar, how do i get it there in CS6?

Not that I advocate keeping Bridge running all the time (heck, I don't use it at all), but one possibility that comes to mind is to set the configuration for it to start in the background when you log into your system. Then it can be running and available on your Taskbar (or dock).
-Noel

Use NI 9237 to Measure the Strain Gauge

I'm a newbie and I have no idea how to use NI 9237.
I'm trying to meaure the strain gauge with NI9237. I dropped down from .
The data type of is Double. I want to know is it the output (the difference of Al+ and Al-) of strain gauge? Or is it something else?
Thank you very much!

Please help!

Constant current excitation for strain gauges

Ideally I would like to log 46 strain gauges using a scxi-1000. At the moment we have two 1102B modules, one 1100 module, and a 1122 module.
The 1122 module supports quarter bridge strain gauges but is very limited in scan rates when logging 16 strain gauges all at once.
Stuart from ni gave me an idea of constant current excitation for the strain gauges. The 1581 would be very suitable seem it delivers 32 channels of costant current and would suit the 32 channels of the 1102B we already have. Only problem is whether the 100 micro amps will be sufficient current to excite the strain gauges with reasonable accuracy.
The remaining strain gauges that wouldn't fit into the 1581 would run on a 6 channel strain gauge amplifier and then run through the other 1102 module we have and use a datataker for any left overs.
Any other suggestions? I have looked into buying either the 1521B for 24 channel quarter bridge or two 1520's but am unable to purchase these at the current time.
Thanks for your time.
Message Edited by Peter W Brown on 01-11-2006 09:55 PM

The full range of a strain gage in most applications is going to be
less than 1 ohm, which means that a typically strain application needs
to be able to measure the output on the order of fractions of an ohm to
be even remotely close to accurate.
The reason strain gages are typically put in a bridge configuration is
so that their output can be centered around 0V which enables the signal
conditioning module to apply very large amounts of gain to the
measurement (up to 2000 on the SCXI-1520). Without this gain, the
sensitivity of the strain gage is so small that you will be very
hard-pressed to get remotely accurate readings.
For this reason alone, I don't think there is a current-excitation
solution available that will enable you to get sufficient resolution
from the strain gage reading.
The SCXI-1521 is probably your best solution for measuring a large
number of quarter bridge strain gages. If you also need to measure
other bridge configurations (i.e. half or full) then the SCXI-1520 is
your other option.
-Logan K

Setting up DAQ system for testing (using pressure transducer, linear position sensor and strain gauges)

Hello,
I like to get your suggestion in setting up the DAQ system. I am very beginner in this issue.
These SCXI listed below are what we have in the laboratory. I will use DAQ card 6062E.
SCXI 1000
SCXI 1520
SCXI 1140
SCXI 1142
SCXI 1305 , 1302 , 1300
SCXI 1122
SCXI 1100
I will use linear position sensor in my experiment. But I'm not sure which SCXI shoud I connect to this sensor.
This sensor gives 4-20mA output. it requires +13 to +28Vdc excitation.
I will use pressure transducer (strain gauge type) which gives 100mV output and requires 10Vdc supply.
I will use strain gauges 350 ohm.
Regarding to the number of channels used in my experiment, I will use 1 channel of pressure transducer, 1 channel of linear position sensor and 3 or 4 strain gauges.
Could you please suggest me which SCXI should be used with pressure transducer, linear position sensor and strain gauges.
Now I'm thinking to use SCXI 1520 with strain gauges and pressure transducer. Is that ok?
But I'm not so sure on the linear position sensor which gives current output.
And regarding to sampling rate, I like to get minimum of 60-70 KS/s for pressure transducer. And around 1KS/s for linear position sensor and 1KS/s for each channel of strain gauge are enough. Can I archieve these sampling rate from the available SCXI modules mentioned before? I attached the datasheet of pressure transducer and linear position sensor for you. Please see attached files.
I'm reallly look forward for your suggestion.
Thank you in advance,
Ganchai.
Attachments:
XPM6_mini. pr. transducer.pdf ‏115 KB
linear-position-sensor.pdf ‏1683 KB

Hi Ganchai,
I would recommend the 1520 with a 1314 terminal block for connecting your pressure transducer and strain gauge. It is designed for excitation, bridge completion and has many other features to fit these applications. For your linear position sensor, try using the 1100 module with an additional precision shunt resistor. For example, our 1308 terminal block has built in 249Ohm shunt resistors for taking current inputs for your 1100. These connections should give you the readings you would like.
As far as sampling rate goes, you should be fine with your requirements. Good luck and I hope you are succesful.
PBear
NI RF

Can I measure Vibrating Wire Strain Gauges using Field Point Inputs?

Is wish to connect a Vibrating Wire Strain Gauge using Field Point.
The sensor requires a swept frequency excitation (typically 400 to 1500 Hz) and then generates a frequency output proportional to the strain applied on the vibrating element. The frequency (roughly upto 1kHz) needs to be measured.

What sort of resolution is needed on the frequency sweeping? There are currently four FieldPoint modules that can be used for generating pulsed outputs; the FP-CTR-500, FP-CTR-502, FP-PWM-520 and FP-PG-522. For the remained of this posting, I will use FP-CTR-50X to represent both the FP-CTR-500 and FP-CTR-502 as they are identical in functionality, different in their input/output stages.
The FP-PWM-520 is a Pulse Width Modulation output with 12 bit resolution on duty cycle and 16 bit resolution on the pulse period. The period is adjustable from 1 to 655535 milliseconds, which makes the module slightly less than ideal for frequency sweeping as it's highest frequency is 1 kHz and it's second highest frequency is 500 Hz.
The FP-PG-522 is a Pulse Generator module that can operate in an continuous pulse mode. The On Time, Off Time and resolution (time base) are adjustable. The smallest time base is 100 ms, for a maximum output frequency of 5 kHz. Like the FP-PWM-520, the FP-PG-522 adjusts it's output rates by changing the time rather than the frequncy, making it difficult to smoothly sweep across frequencies.
Finally, the FP-CTR-50X modules may be used. The FP-CTR-50X modules have 8 16 bit counters, 4 Gates and 4 outputs. The module has two internal clocks, 1 kHz ad 32 kHz that can be used to feed the counters. The outputs can be configured to toggle each time an adjustable terminal count is reached, allowing output pulse generation of up to 16 kHz (32 kHz internal clock divided by 2). The FP-CTR-50X modules have the advantage over the above modules in that the counters can be cascaded and set for differing terminal counts allowing multiple pre-scalers which may allow better resolution of generated frequncies.
For measuring the output frequency generated by the gauge, the only current modules that will allow you to directly measure the output are the FP-CTR-50X modules. However, as they were primarily designed for event counting, it takes a little bit of extra programming to allow them to be used to measure frequencies. The effectiveness of frequency measurement on the FP-CTR-50X modules varies on the sampling period, the programming and the network module. There are several KnowledgeBase and Developer Exchange articles talking about how to use a FP-CTR-50X module to measure frequencies, so I will not duplicate the information in this post.
Regards,
Aaron

Is there a strain gauge bridge on the 6025E?

Similar Messages

Maybe you are looking for