Burkert 8228 ELEMENT - Fluid Data

15
Technical data
Type 8228
6.3 Fluid data
Fluid temperature
• 8228 with conductivity sensor in PVDF
• 8228 with conductivity sensor in PP
• 8228 with conductivity sensor in PEEK
The fluid temperature may be restricted by the fluid pressure,
the material the conductivity sensor holder is made of and the
material the S020 fitting used is made of (see Fig. 2).
• -15 °C to +100 °C
• 0 °C to +80 °C
• -15 °C to +130 °C
Fluid pressure
• 8228 with conductivity sensor in PVDF
• 8228 with conductivity sensor in PP
• 8228 with conductivity sensor in PEEK
The fluid pressure may be restricted by the fluid temperature,
the material the conductivity sensor holder is made of and the
material the S020 fitting used is made of (see Fig. 2).
• PN6
• PN6
• PN10
Conductivity measurement
• Measurement range
• Resolution
• Measurement deviation ("measurement bias" as
defined in the standard JCGM 200:2012)
• Linearity
• Repeatability
• Response time (90%)
• 100µS/cm to 2 S/cm.
• 0,1 µS/cm
• ±(2% of the measured value + 5µS/cm)
• ±2%
• ±(0,2% of the measured value + 2µS/cm)
• from 3 s (without filter) to 40 s (with "slow" filter)
Temperature measurement
• Measurement range
• Resolution
• Measuring uncertainty
• Response time (90%)
• -40 °C to +150 °C, restricted by the conductivity sensor used
• 0.1 °C
• ±1 °C
• < 280 s (without filter)
Temperature compensation • none or
• according to a predefined curve (NaCl, NaOH, HNO
3
or
H
2
SO
4
) or
• or according to a curve defined especially for your process
12
11
10
9
8
7
6
5
4
3
2
1
0
-200+20 +40 +60 +80 +100 +140
PP
T (°C)
P (bar)
+120
PVDF
PEEK
Fig. 2: Fluid temperature - pressure dependency for a 8228 with a conductivity sensor in PVDF or a conductivity sensor
in PP or a conductivity sensor in PEEK, with a fitting S020 in stainless steel
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