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Load Cells with USB output
USB Load Cells have a quick plug-and-measure capability. They work with a personal computer (PC) and typically have easy-to-use, small footprint software to allow engineers to read, log and plot forces, weights and pressures.
Setting up a USB load cell only requires a connection to a computer with a USB port. The USB port provides the power required to activate a load cell as well as the communications link for the software to talk to the load cell.
ASCII commands can be sent to the USB load cell via the software to display force readings. This could be the standard HyperTerminal software offered within Windows XP or other similar Terminal Emulators offered by other 3rd party software developers.
Load Cell Options
Load Cells with USB output can be made of conventional strain gauge technology or with capacitive force measurement technology.
Resistive Load Cells with USB output
Loadstar Sensors offers DI-100U and DI-1000U digital load cell interfaces that work with most any conventional Wheatstone bridge circuits with mV/V outputs. They accept a load cell, torque sensor or pressure sensors with analog millivolt outputs and output a USB signal.
Optionally the DI-1000Z and DI-1000ZP offer wireless output using the IEEE 802.15.4 communications protocol. The DI-1000ZP offers a battery backup option as well for totally cable free operation of the load cell.
Capacitive Load Cells with USB output
Loadstar offers the iLoad Series capacitive load cells with fully integrated signal conditioning and USB communications protocols in a single package - for customers who prefer the fully integrated solution instead of using a separate external interface device. The capacitive devices are smaller in size, lower in profile and have a single cable with USB connectors attached to the load cell. You just plug in the USB load cell to a PC and start measuring!
One can also easily integrate these digital load cells into custom programs written using NI LabVIEW or Matlab, or one can write customer programs in C/C++/VisualBasic/Visual Studio or any other development platform.