Installation and Commissioning
................................................................................................................................................................................................
................................................................................................................................................................................................
Manual TRZ 04 · EN04 · February, 1st 2017
20
1.9 Accuracy
of
measurement
The following error limits apply within the permissible measuring range:
Measuring range:
Qmin to 0.2 Qmax
0.2 Qmax to Qmax
Calibration limit
1)
2 %
1 %
TRZ 04
1 %
0.5 %
TRZ 04-K
2 %
(DN 50, DN 80:
3 %)
1 %
(DN 50:
1.5 %)
1)
maximum error due to the German Metering and Calibration Rules
It will be checked whether these limits are observed. They also apply to the high-pressure
range.
Figure 2: Calibration curve of a turbine meter
The reproducibility, i.e. the difference between the results of two measurements under
identical conditions, is as follows:
TRZ 04, TRZ 04-K:
0.1%
+
2
-
2
-
1
%
0
+
1
10
50
100
Introduction
