HACH LANGE Polymetron 8350 Manuel D'utilisation page 6

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
Glass
Tube of Pt 100
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.
Application:
Junction type
Body material
Measurement range
Maximum temperature (°C)
Maximum pressure
Drift (/ week)
Offset @ pH7
Slope
Reference impedance @ 25 °C < 50 kohm
Glass impedance @ 25 °C
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8350.5
Junction
PTFE Junction
Platinum ring
Stainless steel
tube of Pt 100
8350.4
Measuring pH at
high temperatures
Flat, PTFE
PPS
0...14 pH
110
10 bar
< 3 mV
± 20 mV
56...61 mV / pH
150 ... 500 Mohm
PTFE Junction
Glass (flat)
8350.5
Measuring pH in a Measuring redox
fouling environment
Flat, PTFE Flat, PTFE
CPVC PPS
0...12 pH ± 1500 mV
80 110
10 bar 10 bar
< 3 mV < 3 mV
± 20 mV -
56...61 mV / pH -
< 50 kohm < 50 kohm
50...250 Mohm Platinum
8351
Platinum ring
8351