Hach-Lange POLYMETRON 9500 Ultrapure pH_ORP Module User Manual - Manual (Page 3)

Specifications
Specifications are subject to change without notice.
pH/ORP sensors
8350.3 8350.4 8350.5 8351
Application
Measuring pH in
samples containing
hydrofluoric acid
Measuring pH at
high temperatures
Measuring pH in a
waste water
environment
Measuring ORP
Material PPS PPS CPVC PPS
Measurement range 0—12 pH 0—14 pH 0—12 pH ± 1500 mV
Maximum
temperature
110 °C 110 °C 80 °C 110 °C
Maximum pressure 10 bar 10 bar 10 bar 10 bar
Repeatability (week) < 0.05 pH < 0.05 pH < 0.05 pH < 0.05 pH
Offset @ pH7 ± 0.34 pH ± 0.34 pH ± 0.34 pH N/A
Slope 56—61 mV/pH 56—61 mV/pH 56—61 mV/pH N/A
Reference
impedance @ 25 °C
< 50 Kohm < 50 Kohm < 50 Kohm < 50 Kohm
Glass impedance @
25 °C
100—150 Mohm 150—500 Mohm 50—250 Mohm N/A
8362 8417
Application
Measuring pH in pure or ultra pure
water
Measuring pH in industrial and
waste water treatment plants
Material 316L stainless steel Glass membrane, ceramic junction
Measurement range 2—12 pH 0—14 pH
Maximum temperature 80 °C 110 °C
Maximum pressure
16 bar @ 25 °C;
6 bar @ 100 °C
10 bar @ 25 °C
Repeatability (24 hours) < 0.01 pH 0.02 pH
Input impedance > 10 6 Mohm 100 Mohm
Antimony electrode sensors
8346 / 8347
Application Measuring pH or ORP in dirty water
Material Polypropylene
Maximum temperature
80 °C (pH measurements with 8346)
120 °C (pH measurements with 8347)
50 °C (ORP measurements)
Sample pressure Atmospheric
Maximum pressure (electrolyte container) 5 bar
English 3