Yokogawa PH sensor SC21C-AGP26

Yokogawa PH sensor SC21C-AGP26

The SC21 series, already for many years Yokogawa’s trusted range of combination pH electrodes, still has the same variety of choices making it easy to find the best electrode for each application.Yokogawa PH sensor SC21C-AGP26

Characteristics of type SC21-AGP24
• Ag/AgCl wire reference system.
• pH bulb with cage protection.
• Less maintenance due to the gelled electrolyte and porous PTFE.
• Thickened electrolyte (3.3 m.). Yokogawa PH sensor SC21C-AGP26

Characteristics of type SC21-AAP26
• High quality Ag/AgCl reference system (pin) which can stand high temperatures and temperature fluctuations.
• Built-in salt bridge to prevent poisoning of the reference system.
• A large area PTFE junction to resist fouling to a high degree.

Characteristics of type SC21(C)-AGP26
• High quality Ag/AgCl reference system (pin) which can stand high temperatures and temperature fluctuations.
• Double junction (thickened saturated KCl-solution). The built-in salt bridge prevents poisoning of the reference system.
• Heavy duty glass membrane for prolonged operation in corrosive, abrasive and fouling environments (withstanding traces of HF).
• A large area PTFE junction to resist fouling. Yokogawa PH sensor SC21C-AGP26

Characteristics of type SC21(C)-ALP26
• Chemical resistant, steamsterilisable pH-glass.

Characteristics of type SC21C-AGP64
• Ag/AgCl wire reference system.
• Less maintenance by the combination of gelled electrolyte and porous PTFE.
• 3.3 m KCl electrolyte

SC21C Combined pH Electrodes (Flow)
This flowing electrolyte sensors uses a ceramic reference junction, with the electrolyte (3.3 molal KCl). The flow of electrolyte through the junction, while small, remains the safest way to prevent clogging and to protect the internal reference against poisoning and diffusion.

Features for type SC21C-AGC55
• For tough application where pollution of the reference system is to be expected.
• Low ionic application where the possitive flow of electrolyte provides the conductivity needed to measure pH(< 50 µS/cm)
• Heavy duty pH sensitive glass.
• Flowing reference system for pollution resistance, and highly stable reference potential.
• PG13.5 standard DIN electrode connection.
• Adapter to ensure compatibility with full fitting program.
• Use in combination with the presurisable electrolyte reservoir to obtain a positive flow towards the process (K1520YA). For compatibility with the Yokogawa ”Compact” range of electrode holders, the SC21C-AGC55 combined sensor, has a  PG13.5 DIN connector. For temperatures higher than 85°C we recommend to use the PVDF version.


Detailed Models:
SC21-ALP26      Combined pH sensor 
SC21C-AGC55     Combined pH sensor 
SC21C-AGP26     Combined pH sensor 
SC21C-AGP64     Combined pH sensor 
SC21-AGP24
SC21D-AAP26     Combined pH sensor 
SC21D-ASP23     Combined pH greenhouse
SC21C-AGC55

Yokogawa PH sensor SC21C-AGP26

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