YOKOGAWA PH8ECP, User Manual, Page: 10 / 27

< 1. SPECIFICATIONS >
1-1
IM 12B7J3-01E
1. SPECIFICATIONS
The PH8ECP pH sensor, consisting of a complex glass electrode assembly, has high resistance
to corrosion in solutions involving highly concentrated chlorine (Cl
2
) and sodium chloride (NaCl). It
can be used to measure the pH of solutions in an electrolytic plant. This KCl filling type pH sensor is
incorporated in a flow-through type holder.
1.1 Standard Specifications
Measurement: Hydrogen ion concentration (pH) of a solution
Measurement principle:
Glass electrode method
Measuring range: 0 to 14 pH
Weight: Approx. 0.4 kg (including 3-meter cable)
Installation: Mounted in a flow-through type holder
When a sensor is built into the submersion type holder, seal materials are required.
Contact your nearest Yokogawa service station or sales representative.
Ambient temperature limits:
-10 to 50 °C.
(Do not allow KCl to condense in the reserve tank).
Wetted part materials:
Body;
Glass
Earth eIectrode; Platinum
Liquid junction material; Ceramics
Cable specifications: Four-conductor low-noise cable, O.D. approx. 6.5 mm;
3 or 5 meter length should be selected.
Operating Conditions:
Solution temperature: -5 to 105 °C
Note: The maximum solution temperature also depends on the material of the holder.
Temperature detection element: Pt1000
Solution pressure: Atmospheric pressure
(When a flow-through type holder with a medium pressure KCl solution reserve tank is used,
the maximum solution pressure is limited to 500 kPa.)
Solution flow velocity: Maximum 2 m/sec
Solution flow rate:
3 to 11 L/min (when a flow-through type holder is used)
Solution conductivity: 50 µS/cm or higher
KCl solution consumption: 3 mL/day or less (pressurized with 10 kPa)
Response time:
90% response within 10 seconds to measurement or buffer solution at 20 °C
7th Edition : Nov.20,2018-00