(1)High accuracy (regular accuracy ± 1%R, ± 0.5%R,
highest accuracy±0.2% R);
(2)Good repeatability (short-term one reaches 0.05%--0.2%),
priority to be used in trade settlement for its extremely
high accuracy in the regular calibration or on-line
calibration;
(3)Pulse frequency signal output is applicable to totality
calculation and computer connection with no zero drift
and strong anti-interference capacity;
(4)High frequency (3-4kHz) can be achieved, and has high
resolution;
(5)Wide rangeability: medium or large diameter may reach
1:20,and small diameters are 1:10.