15. Specification | 15.4 - Weighing electronics data | 142
15.4.2 Principle
Principle Direct current, Delta-Sigma converter, ratiomet
ric to supply voltage
Conversion time/
measurement time
10, 20, 40, 80, 160, 320, 640 ms
Digital filter Can be activated, active 4th order (low-pass)
characteristics: Bessel, aperiodic, Butterworth,
Tschebyscheff
Cut-off frequency adjustable
15.4.3 Accuracy and stability
Accuracy* ≤6,000 d, acc. to OIML R76 Klasse III
Min. measuring signal * 6,000d: 0.6 mV/V @5V supply [0.5 μV/d]
Linearity* <0.01%
Zero point stability error
(TK
0
)*
<0.05µV/K RTI; ≤0.01%/10 K at 1mV/V
SPAN stability error
(TK
span
)*
<±4.0ppm/K
* at a measurement time of 160 ms.
15.4.4 Sensitivity
Sensitivity 0.5µV/d @ 6,000 d
Max. resolution 4.28 million internal steps at 20 mV
Measurement input
(measuring signal +
dead load)
U
DC
= 0…max. 20mV, symmetrical to zero
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