Burkert 8756, Operating Instructions Manual

Page: 23 / 88

Type 8756
Technical data
english 23
Measurement accuracy after
1 minute warm-up time ±0.2% of the measured value
PLUS ±0.0014 kg/h. If Qmin <
0.3 kg/h, then the control ac-
curacy can be lower.
0.0014 kg/h = zero-point stabil-
ity
Maximum measurement range 1:160
The measurement range is
defined as the ratio of Qnominal
of the product to Qmin. Qmin =
0.05 kg/h. Refer to figure
MFC
with pump: Measurement
range depending on nominal
flow rate [
}
23]
Settling time (t95%) < 1 s, for water at 20 °C
The settling time depends on
the operating fluid used.
Tab. 16: Mass flow rate measurement
0
1 2 3 4 5 6 7 8
[kg/h]
40
20
60
80
10
30
50
70
90
100
140
120
160
110
130
150
Nominal flow rate Q
Measurement range
Fig. 10: MFC with pump: Measurement range depending on nom-
inal flow rate
Calibration fluid Water
Temperature of the calibration
fluid 25 °C
Calibration pressure 4 bar
Tab. 17: Calibration conditions
Density range 0...5 kg/l
Measurement accuracy for
mass flow rate values higher
than 1.5 kg/h ±0.01 kg/l