Hach-Lange POLYMETRON 9500 pH_ORP Sensors 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
General information
In no event will the manufacturer be liable for direct, indirect, special, incidental or consequential
damages resulting from any defect or omission in this manual. The manufacturer reserves the right to
make changes in this manual and the products it describes at any time, without notice or obligation.
Revised editions are found on the manufacturer’s website.
Safety information
N O T I C E
The manufacturer is not responsible for any damages due to misapplication or misuse of this product including,
without limitation, direct, incidental and consequential damages, and disclaims such damages to the full extent
permitted under applicable law. The user is solely responsible to identify critical application risks and install
appropriate mechanisms to protect processes during a possible equipment malfunction.
English 3