Burkert 8012 Manuel D'utilisation page 22

Type of fluid transparent to infrared rays
(optical sensor)
Max. temperature Fitting in stainless steel, brass, PVDF:
of the fluid 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 Fitting in stainless steel, brass: -15 °C
temperature 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 1% max.
particles
Measurement 0.3 m/s to 10 m/s (depending on the fitting)
range
≤ ± (0.5% of the full scale (10 m/s) + 2.5%
Measurement
accuracy of the measured value), with standard K
factor
≤ ±0.5 % of the full scale (10 m/s)
Linearity
Repeatability 0.4% of the measured value
Measuring magnetic or optical sensor
element
22
English
Type 8012
Technicaldata
Max. error [%]
10
8
6
4
2
1 2 3 4 5 6 7 8
-2
-4
-6
-8
-10
Velocity of fluid [m/s]
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
Typical Bürkert
curve
9 10
With standard K
factor (no cali-
bration on site)