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pH/ORP Sensor DPA405
pH/ORP Electrodes for Chemical Processes
DPA405/DPA485

Yokogawa's process pH and ORP meters are highly reliable and feature advanced functions. They are useful in a broad range of applications including production process water quality management and medium-sized wastewater treatment plants, or as general pH and ORP control systems. Based on Yokogawa's track record and years of experience, a comprehensive range of products has been produced to provide solutions best suited to individual applications.

In addition to our standard Ryton pH electrodes, our line of pH electrodes has been strengthened by the inclusion of the pH electrode for chemical processes DPA405 to cope with applications where standard electrodes cannot be used.

Like the pH electrode series, the ORP electrode series is also offered with the DPA485 ORP electrode for chemical processes in addition to our standard Ryton ORP electrodes.

*

Extremely long life span for pH measurement in electrolytic processes
* With the pressurized inner solution there is no need for a pressure holder.
* The silver barrier incorporated in the reference electrode inhibits the generation of sulfide around the liquid junction.
1. pH Electrodes for Chemical Processes (DPA405)

Measuring range pH 0 to 14
Measuring temperature 0 to 100 degree C
(See our GS when using holder)
Measuring pressure Atmospheric pressure to 250kPa
(See our GS when using holder)
Internal electrolyte High-viscosity gel
Temperature compensation sensor None (Manual temperature compensation on the converter or transmitter)
(Use adapter with temperature sensor
(SA405) for application where the temperature varies)
Applicable holder Flow-through holder (PH8HF), Submersion
holder (PH8HS)
(An optional adapter is needed, but not
needed when using an adapter with
temperature sensor SA405.)
Use O-ring covered by Teflon (K9148MR) when using a special holder for electrolytic processes
(Note) This electrode cannot be used outdoors and with guide-pipe holder.

Wetted part materials Body; Glass
O-ring; Silicon rubber or Daielperfrow rubber
Adapter; Stainless steel (SUS316), polypropylene,
rigid polyvinyl chloride or heat-resistant
polyvinyl chloride

2. ORP Electrodes for Chemical Processes DPA485

Measuring range -1500 to 1500 mV
Measuring temperature 0 to 100 degree C (See our GS when using holder)
Measuring pressure Atmospheric pressure to 250kPa
(See our GS when using holder)
Internal electrolyte High-viscosity gel
Applicable holder Flow-through holder (PH8HF), Submersion
holder (PH8HS)
(An optional adapter is needed.)
Use O-ring covered by Teflon (K9148MR)
when using a special holder for electrolytic
processes
(Note) This electrode cannot be used outdoors and for throwing use.

Wetted part materials Body; Platinum-glass, silicon rubber or
Daielperfrow rubber
Adapter; Stainless steel (SUS316), polypropylene,
rigid polyvinyl chloride or heat-resistant
rigid polyvinyl chloride

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