Bürkert 8012 Series, Operating Instructions Manual, Page: 22 / 136

22
Technicaldata
Type 8012
Type of fluid
(optical sensor) transparent to infrared rays
Max. temperature
of the fluid Fitting in stainless steel, brass, PVDF:
a) 100 °C if the ambient temperature
≤
+45 °C
b) 90 °C if the ambient temperature is
between 45 °C and 60 °C
Fitting in PP: 80 °C
Fitting in PVC: 60 °C
Min. fluid
temperature Fitting in stainless steel, brass: -15 °C
Fitting in PP or PVC: +5 °C
Fitting in PVDF: -15 °C
Fluid pressure depends on the fitting material; see the
pressure / temperature diagramme in chap.
7.1
Fluid viscosity 300 cSt max.
Rate of solid
particles 1% max.
Measurement
range 0.3 m/s to 10 m/s (depending on the fitting)
Measurement
accuracy
≤
± (0.5% of the full scale (10 m/s) + 2.5%
of the measured value), with standard K
factor
Linearity
≤
±0.5 % of the full scale (10 m/s)
Repeatability 0.4% of the measured value
Measuring
element magnetic or optical sensor
Velocity of fluid [m/s]
Typical Bürkert
curve
With standard K
factor (no cali-
bration on site)
Max. error [%]
1 9 2 3 4 5 6 7 8 10
2
4
6
8
10
-2
-4
-6
-8
-10
Fig. 2 : Measurement accuracy. These values were determined in
the following reference conditions:
medium = water, water and ambient temperatures 20 °C,
min. upstream and downstream distances respected,
appropriate pipe dimensions
English