Multimeter passes evaluation with flying colours

Jon Lawson

A six-month evaluation of an 8081 Multimeter by Italy's national laboratory, the Istituto Nazionale di Ricerca Metrologica (INRIM), has shown that the product exceeds expectations and outperforms its published specifications.

In 2015 Transmille and INRIM entered an agreement to provide a high level evaluation report on the performance and stability of Transmille's 8.5 digit multimeter, the 8081.

Over the past 6 months INRIM has been gathering data on an 8081 and has finalised its report. A statement from INRIM says: "In this report the Transmille model 8081 high-precision DMM was evaluated by the INRIM lab for multifunction programmable instruments calibration in a six-month period. The DMM showed a satisfactory stability and a good agreement with the declared accuracy specifications that are at the level and somewhere even better than other top-class 8.5 digits DMMs.

"8081 high currents (up to 30 A range), low currents (down to 10 nA range) DC resistance up to 2 TOhms functions are very useful and not available in other DMMs. Only the 10mA and 100 mA DC current ranges have to be further verified either as declared accuracy and in the adjustment process."

The report also states: "In the 10 A and 30 A ranges in AC current, the DMM was evaluated also at 5kHz, showing a satisfactory stability. Hence, an evaluation of the specification values for these points could be made by Transmille and successively added to the current 8081 DMM specifications."