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 *
6,000 d: 0.6 mV/V @ 5 V supply [0.5 μV/d]
Linearity*
<0.01 %
Zero point stability error
(TK
0
)*
<0.05 µV/K RTI; ≤0.01 %/10 K at 1 mV/V
SPAN stability error
(TK
span
)*
< ±4.0 ppm/K
* at a measurement time of 160 ms.
15.4.4 Sensitivity
Sensitivity
0.5 µV/d @ 6,000 d
Max. resolution
4.28 million internal steps at 20 mV
Measurement input
(measuring
dead load)
U
DC
= 0…max. 20 mV, symmetrical to zero
