SC21-AGP24电极传感器
SC21-AAP26、SC21-ALP26、SC21-AGP24、SC21-AGP26、SC21-AGP64、SC21-AGC55
SC21D-AGC55、SC21D-AAP26、SC21C-AGC55、SC21C-AGP26、SC21C-AGP64
SC25V、SC25V-AIP25、SC25V-ALP26-120、SC25V-ALP26-225、SC25V-AGP26-120
SC25V-AGP26-225、SC25V-AGP25-120、SC25V-AGP25-225、SC25V-ALP25-120、SC25V-ALP25-225
SC21 & SC25V Combined pH Electrodes
（non-flow）
Yokogawa continuously is improving the present pH sensing portfolio and designing new pH sensors integrating the latest improvements into the new design and upgrading our present.
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.
Characteristics of type
• 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.）.
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-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.
Characteristics of type SC21-ALP26
• Chemical resistant, steam-sterillisable 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
The SC25V is the latest addition to the family. Yokogawa’s first combination pH sensor in a 12 mm design with an external Liquid earth. A new design made it possible to create a large electrolyte volume making this sensor last longer then most other comparible pH electrodes.
Features SC25V
• External titanium Liquid Earth
• Pt1000 integration in pH compartment giving highly accurate temperature compensation
• ATEX certified : ATEX II1G Ex ia IIC T3...T6 Ga
• CIP and Steam cleaning possible
• Large internal KCL volume giving the sensor a longer life time
• Measuring in Pure Water applications from 10 μS/cm
• Variopin connector
• SC24V-ALP25 for chemically harsh applications and high
temperatures
• SC25V-AGP25 for all General Purpose applications
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