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Electrodes for Process

pH combination electrodes

  | EGA133I | EGAT150VP | EGAT173VP | EGA150I |
  | EGA153I | EGA161L/PG | EGA173I | EGA233I |
  | EGC151I/S | EGS150I |

EGA133I

  • pH combination electrode for swimming pool and aquarium water
  • robust plastic shaft with integrated pH membrane protection
  • gel electrolyte

EGA233I

  • pH combination electrode for measurements in so called "electrode toxins" (sulphides)
  • double-junction reference system
  • gel electrolyte
Type EGA133I EGA233I
Shaft plastic, Ø 12 mm plastic, Ø 12 mm
Immersion length 120 mm 120 mm
Temperature sensor - -
Membrane shape cylinder cylinder
Reference system Ag/AgCl Ag/AgCl
Electrolyte (KCl) gel (3 M) gel (3 M)
Diaphragm 2 x ceramic 4 x ceramic
Isopotential point 7.0 ± 0.3 7.0 ± 0.3
pH range 0 ... 14 0 ... 14
Temperature range -5 ... 80 °C -5 ... 80 °C
Pressure < 6 bar < 6 bar
Minimum conductivity 
of the medium
100 µS/cm 100 µS/cm
Application raw water, waste water, surface water, swimming pools waste water, electroplating, mediums in so called "electrode toxins"
Electrical connection S8 coaxial plug head with thread PG 13.5 S8 coaxial plug head with thread PG 13.5
Order code EGA133I EGA233I

EGA150I

  • pH combination electrode for swimming pool and aquarium water
  • gel electrolyte

EGAT150VP

  • pH combination electrode for beverage industry
  • integrated temperature sensor
  • gel electrolyte
Type EGA150I EGAT150VP
Shaft glass, Ø 12 mm glass, Ø 12 mm
Immersion length 120 mm 120 mm
Temperature sensor - Pt 1000 or Pt 100 or NTC 30 kΩ
Membrane shape cylinder cylinder
Reference system Ag/AgCl Ag/AgCl
Electrolyte (KCl) gel (3 M) gel (3 M)
Diaphragm 1 x ceramic 2 x ceramic
Isopotential point 7.0 ± 0.3 7.0 ± 0.3
pH range 0 ... 14 0 ... 14
Temperature range -5 ... 80 °C -5 ... 80 °C
Pressure < 6 bar < 6 bar
Minimum conductivity 
of the medium
100 µS/cm 100 µS/cm
Application raw water, waste water, surface water, swimming pools surface water, soap water, beverages
Electrical connection S8 coaxial plug head with thread PG 13.5 Variopin plug head with thread PG 13.5
Order key EGA150I EGAT150VP ...

EGA153I

  • pH combination electrode for waste water and electroplating
  • 3 ceramic diaphragms
  • gel electrolyte with KCl reserve pipe

EGA161L/PG

  • pH combination electrode for low ionic mediums
  • side tube realises connecting to an electrolyte reservoir → constant outflow of electrolyte
  • flexible sleeve junction
Type EGA153I EGA161L/PG
Shaft glass, Ø 12 mm glass, Ø 12 mm
Immersion length 120 mm 120 mm
Temperature sensor - -
Membrane shape cylinder cylinder
Reference system Ag/AgCl Ag/AgCl
Electrolyte (KCl) gel (3 M) fluid (3 M)
Diaphragm 3 x ceramic flexible sleeve junction
Isopotential point 7.0 ± 0.3 7.0 ± 0.3
pH range 0 ... 14 0 ... 14
Temperature range -5 ... 80 °C -5 ... 80 °C
Pressure < 6 bar < 1 bar with pressure load at side tube connector
Minimum conductivity 
of the medium
100 µS/cm 20 µS/cm
Application heavily waste water, electroplating low ionic mediums, drinking water with low conductivity
Electrical connection S8 coaxial plug head with thread PG 13.5 S8 coaxial plug head with thread PG 13.5 (shaft)
Order code EGA153I EGA161L/PG

EGA173I

  • pH combination electrode for heavily polluted waste water and electroplating
  • ring-shaped sleeve junction
  • gel electrolyte with KCl reserve pipe

EGAT173VP

  • pH combination electrode for heavily polluted waste water
  • ring-shaped sleeve junction
  • integrated temperature sensor
  • gel electrolyte
Type EGA173I EGAT173VP
Shaft glass, Ø 12 mm glass, Ø 12 mm
Immersion length 120 mm 120 mm
Temperature sensor - Pt 1000 or Pt 100 or NTC 30 kΩ
Membrane shape cylinder cylinder
Reference system Ag/AgCl Ag/AgCl
Electrolyte (KCl) gel (3 M) gel (3 M)
Diaphragm sleeve junction sleeve junction
Isopotential point 7.0 ± 0.3 7.0 ± 0.3
pH range 0 ... 14 0 ... 14
Temperature range -5 ... 80 °C -5 ... 80 °C
Pressure < 6 bar < 6 bar
Minimum conductivity 
of the medium
50 µS/cm 50 µS/cm
Application drinking water, water soluble lacquers, low ionic mediums, electroplating, waste water low ionic mediums, heavily polluted waste water, electroplating
Electrical connection S8 coaxial plug head with thread PG 13.5 Variopin plug head with thread PG 13.5
Order code EGA173I EGAT173VP ...

EGC151I/S

  • pH combination electrode for pressureless application in process chemistry (sugar industry)
  • thermally stable up to 100 °C
  • long-term stable (electrolyte with saturated KCl solution and KCl reserve)

EGS150I

  • pH combination electrode for measurements in process chemistry
  • sterilisable, autoclavable, thermally stable up to 130 °C
  • gel electrolyte
Type EGC151I/S EGS150I
Shaft glass, Ø 12 mm glass, Ø 12 mm
Immersion length 120 mm 120 mm
Temperature sensor - -
Membrane shape cylinder ball
Reference system Ag/AgCl Ag/AgCl
Electrolyte (KCl) fluid (saturated) with KCl reserve pressurized gel, with KCl reserve
Diaphragm 1 x ceramic 1 x ceramic
Isopotential point 7.0 ± 0.3 6.8
pH range 0 ... 14 0 ... 14
Temperature range -5 ... 100 °C -5 ... 140 °C
Pressure pressureless vacuum to 10 bar
Minimum conductivity 
of the medium
100 µS/cm 100 µS/cm
Application hot (100 °C) mediums with extreme pH values process chemistry, high temperatures, biotechnology, fermenters
Electrical connection S8 coaxial plug head with thread PG 13.5 S8 coaxial plug head with thread PG 13.5
Order code EGC151I/S EGS150I