Ph And Orp - Xylem EXO Series User Manual

pH and ORP

2.9 1.9
Sensor Overview
Users can choose between a pH sensor or a combination pH/ORP sensor to measure these parameters. pH
describes the acid and base characteristics of water. A pH of 7.0 is neutral; values below 7 are acidic; values
above 7 are alkaline. ORP designates the oxidizing-reducing potential of a water sample and is useful for
water which contains a high concentration of redox-active species, such as the salts of many metals and strong
oxidizing (chlorine) and reducing (sulfite ion) agents. However, ORP is a non-specific measurement—the
measured potential is reflective of a combination of the effects of all the dissolved species in the medium.
Users should be careful not to overinterpret ORP data unless specific information about the site is known.
EXOISE1, EXOISE2,
EXOISE5, EXOISE6,
599795, 599797
Specifications
pH
pH units
Units
Temperature
-5 to + 50°C
Operating
Storage 0 to 60°C
Range 0 to 14 units
±0.1 pH units within ±10°C
of calibration temperature;
Accuracy
±0.2 pH units for entire temp
range
Response T63<3 sec
Resolution 0.01 units
Glass combination electrode
Sensor Type
ORP
millivolts
Units
Temperature
-5 to + 50°C
Operating
Storage 0 to 60°C
Range -999 to +999 mV
±20 mV in Redox standard
Accuracy
solution
Response T63<5 sec
0.1 mV
Resolution
Platinum button
Sensor Type
(continued)
(see pg 12)
(see pg 12)
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21
pg