KROHNE Summit 8800 Vol 2 - Manual (Page 96)

96 www.krohne.com 08/2013 - MA SUMMIT 8800 Vol2 R02 en
SUMMIT 8800 STREAM CONFIGURATION 06
Correction points The size of the table can be selected from 2 to 30 points or as none: no
correction.
Correction type Linear, where the correction is applied through the operating range
by linear interpolation between the two nearest data points and linear
extrapolation for low and high flow.
MID, where the correction is limited under Low and high flow conditions
as required by the MID approval. There is no extrapolation done for
these conditions.
%Qmax-%Error A data set of a flow rate (as a percentage of Qmax) and the associated
error (%). The Qmax refers to the meter at hand not the reference
meter. Always start with the lowest flow rate and each following must
be higher than the previous.
%Qmax is in % of maximum flow (Q max.) of the meter and can range
from – Qmax to + Qmax to allow for different linearity in both flow
direction
%Er.rd is the % error of reading. If the output from the meter is less
than the actual flow through the meter then the error is entered as a
negative value.
Calculate A calculation button allows the user to simply check the correction
that would be applied at any flow rate entered. In case the flow for
the reference meter is given, the Qmax for the meter at hand can be
calculated and v.v.:
Figure 88 Gas or steam flow rate calculations
Linear correction is only applied if the meter produces at least 10 pulses per second at Qmin.