ENGINEERS now can download free thermocouple calibration software from National Instruments to improve the accuracy of all thermocouple measurements.
This new software works with the NI LabVIEW graphical development environment to perform multipoint system calibration on any measurement system and any thermocouple type, improving measurement accuracy by up to 400%.
The thermocouple calibration software is comprised of two LabVIEW virtual instruments (VIs). The first works with NI signal conditioning hardware to acquire, compile and write calibration points to file.
The second VI uses the calibration points to create a best-fit polynomial correction curve that compensates for system and sensor inaccuracy through the measurement range, creating greater accuracy for subsequent thermocouple measurements.
The new LabVIEW-based system calibration software complements hardware component calibration by compensating for errors caused by uncertainties in the calibration of hardware and errors from cables and wiring. This reduces the uncertainty of the measurements in the entire instrumentation system.
The calibration software is suitable for thermocouple measurements in manufacturing test and design validation applications and is especially effective in tests where the measured temperature varies across a wide range.
NI thermocouple calibration software works with NI LabVIEW, multifunction data acquisition hardware and SCC/SCXI signal conditioning hardware, as well as third-party hardware.
The free software can be downloaded by visiting http://digital.ni.com/express.nsf/bycode/exdid6.