Overview
DI-1000UHS-10K High Speed USB Load Cell Interface is used to capture dynamic force information at high sampling rates. Examples of such applications include failure strength testing, impact force measurements, vibration testing and material characterization. It can be used with with any resistive load cell.
Features
- Data capture up to 50 kHz sample rates over USB, 1 kHz if you use it over Bluetooth. Note: Loadstar sensors does not currently provide software to operate the unit over Bluetooth mode.
- USB data acquisition
- Plug and play operation with included software and factory calibrated load cells.
- True force measurement (not just G-values)
- Analog calibration feature for easy calibration of your load cell.
Package Contents
- DI-1000UHS-10K High Speed USB Load Cell Interface
- Power supply (12 V). The unit will accept between 9 to 24 V.
- USB Cable to connect to the computer
- Resistive load cell with capacity option of up to 100,000 pounds.
Since impact loads can be extremely large depending on duration of contact of impacting objects, object drop heights, coefficients of rigidity etc, care must be taken to choose the appropriate load cell. Loadstar Sensors is not liable for damage due to any overloading of load cells.
Software
LV-1000HS-10K software compatible with Windows XP, 7, 8, 10 included with purchase. See user guide for software and driver installation, software configuration, features and operation.
Product Dimension
9.18 in x 5.25 in x 1.5 in
Operation
Software Installation
Install the LV-1000Hs-10K software and drivers first before connecting the unit to the computer. Please see the software user guide. You MUST reboot when asked to do so by the driver installation program.
Interface Connections
- Connect a 4 wire load cell as shown in figure above. Slots 5 and 8 (nor marked) are to be used for calibration only and are not used during normal operation. Connect only the shield to slot 8.
If your unit has been shipped with a calibrated load cell, simply plug the provided terminal in to the 8-pin terminal receptacle.
- Connect the included power supply as shown.
- Connect the included USB cable to the PC as shown.
Data Capture
Please follow the instructions on the software user guide to capture impact data.
Load Cell Calibration
We recommend that every load cell be recalibrated at least once a year, more depending upon usage. If your unit has been shipped with a precalibrated load cell, we suggest you ship the unit back to us for a certified calibration. However if you can apply known loads to the load cell (preferably full load), it is very easy to calibrate the DI-1000UHS-10K interface.
- With no load on the load cell, adjust the R1 offset potentiometer (pot) to read approximately 0.5 V between pins 5 and 8.
- With full load, adjust the R2 (pot) to read approximately 4.5 V between pins 5 and 8. This will also change the offset setting made in step 1, which will now be slightly different from 0.5 V
- Take the load off and adjust R1 pot.
- You may have to go back and forth a few times between steps 1 and 2 to get the desired readings at both zero load and full load.
- For example, for a 3000 lb capacity load cell, if the load at 0 lb. is measured to be 0.494 V and at 3000 lb is measure to be 4.653 V, then
lb. / volt = 3000 / (4.653-0.494) = 721
You will need to enter this number in Select/Configure Sensor option of LV-1000HS-10K software, as shown below.
Note: Pin 8 is used to connect and ground the shield of the load cell, if one is present, as well as to read the output voltage during calibration. Please connect a wire if necessary to pin 8 to read the voltage between pins 5 and 8. Once calibration has been performed, this wire can be removed.
Writing your own software for DI-1000UHS-10K
The unit’s architecture is built around Measurement Computing BTH-1208LS Wireless Multifunction DAQ device. You can write your own programs to access the device through several languages and environments such as LabView, Java, .NET languages, Android etc. You can find the specifications, API and programming assistance for BTH-1208LS at Measurement Computing web site.
