Technical Data - Burkert 8221 Manuel Utilisateur

Type 8221 Hygienic Conductivity Sensor Operating Instructions

Technical Data

Range
Linearity (relative)
Cell constant
Temperature range
Pressure range
Temperature sensor Pt 1000
Electrode material
Shaft materials
Surface quality
Protection class
O-ring material
Process connection
Electrical connection High temperature cable, length 5 m; instrument side
1)
Indeterminacies of ± 5 % arise when using only ONE single cell constant for the full range. ± 0.5% accuracy can
be achieved when calibration is performed in a conductivity range close to that of the sample. Remember also
that linearity is strongly influenced by the transmitter used.
2)
Individual cell constant measured with Bürkert standard procedure. The cell constant can be influenced by the
assembly situation.
Type 8221 hygienic conductivity sensor
Insertion type: 0.1µS/cm to 500,000 μS/cm
Flush type: 1µS/cm to 500,000 μS/cm
1)
± 0.5 - 5 %
Insertion type: 0.147 cm
-1 2)
Flush type: 0.360 cm
Insertion type: -20 to 135 °C
Flush type: -20 to 150 °C
Insertion type: 6 bar at 135°C
Flush type: 6 bar at 150°C
higher pressure possible at lower temperatures
stainless steel 1.4435
PEEK with FDA approval (CFR 177.2415)
stainless steel 316L (1.4435)
0.4 μm, electro polished
Insertion type: IP67
Flush type: IP67 with Vario-Pin cable plug connected
and tightened
EPDM with FDA approval
Insertion type: Tri-Clamp® 1.5"
Flush type: Tri-Clamp® 2"or Varivent DN50/40
with open wire or Vario-Pin (VP 6.0) plug
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