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1 SPECIFICATIONS
The 8350 pH and 8351 redox probes are dedicated for process measurements (fouling) and are
protected against mechanical shochs.
All these pH probes incorporate process-contact temperature sensors and impedance control.
8350.4
8350.5
8351
Glass
Junction
Tube of Pt 100
Platinum ring
PTFE Junction
Stainless steel
tube of Pt 100
Glass (flat)
PTFE Junction
Platinum ring
NOTE
: A special model, the
8350.3
, is compatible with all the current, standard accessories and
is designed for use in contact with
hydrofluoric acid
.
8350.4 8350.5 8351
Application:
Measuring pH at
high temperatures
Measuring pH in a
fouling environment
Measuring redox
Junction type
Flat, PTFE
Flat, PTFE
Flat, PTFE
Body material
PPS
CPVC
PPS
Measurement range
0…14 pH
0…12 pH
± 1500 mV
Maximum temperature (°C)
110
80
110
Maximum pressure
10 bar
10 bar
10 bar
Drift (/ week)
< 3 mV
< 3 mV
< 3 mV
Offset @ pH7
± 20 mV
± 20 mV
-
Slope
56…61 mV / pH
56…61 mV / pH
-
Reference impedance @ 25 °C < 50 kohm
< 50 kohm
< 50 kohm
Glass impedance @ 25 °C
150 … 500 Mohm
50…250 Mohm
Platinum
