“Performance by Design” was the
mantra and passion behind the
development of the microK. On Day
1 a decision was made, “ no tweak
pots” (such as used on AC Bridges
to correct for flux leakage), no
software adjustment, no “self calibration”
but performance by design.
The microK achieves its resistance
ratio accuracy by design, not
adjustment and is uniquely drift free.
To be clear, as a ratio bridge the
microK is drift free. This is a benefit
of the substitution topology used and
provides one of the microK’s most
exciting features, it is inherently drift
free.
The microK realizes its superior
linearity and low noise through a
number of novel approaches,
including a new noise reduction
technique, new solid state switching,
new guarding arrangements and a
sophisticated substitution topology
to achieve zero drift.
So perhaps it will be of no surprise
to learn it also uses a new type of
ADC, the concept for the core ADC
technology was licensed from NPL
(the UK’s national standards
laboratory) and operates under
NPL’s “Technology Applied”
scheme.