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DULCOTEST pH Sensors

Graduated pH measuring ranges 0 – 14

pH measurements with DULCOTEST sensors: Precise, reliable and application-adapted measured values in real-time. Control, regulate and monitor chemical processes with the aid of precise measured values.

Reliable Online Measurement of pH Values – with DULCOTEST Sensors

The online measurement and adjustment of pH values must be as accurate, fast and reliable as possible and provide good availability of the measured values, be it for the monitoring, control or regulation of chemical processes.

Our product line of DULCOTEST pH sensors provides a wide range of pH sensors for different measuring tasks.

Our pH sensors are manufactured to very strict quality controls (e.g. in accordance with RoHS guidelines). Routine steps are automated but critical steps are carried out manually under expert supervision. In this way we achieve the best reproducible quality and cost reduction.

Your Benefits

  • Precise and reliable pH measurement enables efficient processes and excellent process reliability
  • The wide choice of sensor types with different constructions makes them reliable components in many applications
  • A long service life is achieved through the use of the best quality materials for the glass and diaphragms, a stable reference system and optimised production. This minimises both downtime and maintenance
  • With short storage times and fast delivery, your pH sensors can be up and running very quickly and you can make maximum use of their service life (all glass sensors start to age as soon as they leave production)
  • Wide range of special versions for fitting length, cable length and plugs for made-to-measure connection to your process
  • Unique label for OEM partners

Technical Details

  • Selection of sensor type according to the application
  • The insertion angle must be > 15° from the horizontal (except with PHEK-L: horizontal to vertical)
  • Maximum flow < 0.8 m/s
  • With cable lengths > 10 m, use the 4-20 mA transducer type PHV1
  • Calibration using quality buffer solutions

pH Sensor PHES 112 SE

pH sensor optimised for use in potable water treatment, swimming pools/hot tubs at up to 60 °C/3 bar

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Diaphragm and reference system optimised for use in swimming pools and for potable water
  • Ceramic diaphragm with special material, optimised size and optimised pore diameter
  • Long service life due to reduced diffusion (‘bleeding’) of the electrolyte
  • Long service life due to the material, which is inert to aggressive disinfectants
  • Stable reference system
  • Twist protection for the sensor cable connected. This means that the cable can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…60 °C
Max. pressure 3.0 bar
Min. conductivity 150 µS/cm
Electrolyte Gel containing potassium chloride
Diaphragm Ceramic
Sensor shaft Glass
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers All DULCOMETER controllers
Typical applications Swimming pools, whirlpools, potable water
Resistance to Disinfectant
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, gel electrolyte, ceramic diaphragm, separate temperature measurement for temperature compensation needed
Installation length Order no.
PHES-112-SE SLg100 100 ±3 mm 1051745
PHES 112 SE 120 ±3 mm 150702
PHES-112-SE SLg225 225 ±3 mm 150092

pH Sensor PHES 112 SE 3D

pH sensor optimised for use in potable water treatment, swimming pools/hot tubs and at low electrolytic conductivities of up to 60 °C/3 bar

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Diaphragm and reference system optimised for use in swimming pools
  • Ceramic diaphragm with special material, optimised size and optimised pore diameter
  • Three ceramic diaphragms optimised for low electrolytic conductivities
  • Long service life due to reduced diffusion (‘bleeding’) of the electrolyte
  • Long service life due to the material, which is inert to aggressive disinfectants
  • Stable reference system
  • Twist protection for the sensor cable connected. This means that the cable can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…60 °C
Max. pressure 3.0 bar
Min. conductivity 50 µS/cm
Electrolyte Gel containing potassium chloride
Diaphragm 3 ceramic diaphragms
Sensor shaft Glass
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers all DULCOMETER controllers
Typical applications Low conductivity water.
Resistance to Disinfectant
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, gel electrolyte, ceramic diaphragm, separate temperature measurement for temperature compensation needed
Installation length Order no.
PHES 112 SE 3D 120 ±3 mm 1045759

pH Sensor PHEP 112 SE

pH sensor optimised for use with clear process water and conditions of up to 80 °C/6 bar

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Diaphragm and reference system optimised for exacting process requirements
  • Ceramic diaphragm with special material, optimised size and optimised pore diameter
  • Long service life due to reduced diffusion (‘bleeding’) of the electrolyte
  • Long service life due to the material, which is inert to aggressive disinfectants
  • Stable reference system for high pressure/temperature requirements
  • Twist protection for the sensor cable connected. This means that the cable can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…80 °C
Max. pressure 6.0 bar
Min. conductivity 150 µS/cm
Electrolyte Gel containing potassium chloride
Diaphragm Ceramic
Sensor shaft Glass
Shaft diameter 15 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers All DULCOMETER controllers
Typical applications Drinking water, clear process water
Resistance to Disinfectant
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, gel electrolyte, ceramic diaphragm, separate temperature measurement for temperature compensation needed
Installation length Order no.
PHEP 112 SE 120 ±3 mm 150041
PHEP 112 SE SLg100 100 ±3 mm 150951

pH Sensor PHEP-H 314 SE

pH sensor optimised for use with clear process water, specifically for alkaline process solutions at high temperatures of up to 100 °C

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Diaphragm and reference system optimised for exacting process requirements
  • Optimised pH-sensitive glass for high alkali content and high temperatures
  • Long service life / excellent precision: Measurement at a high pH value of up to 14
  • Long service life: at high temperatures of up to 100 °C
  • Stable reference system for high pressure/temperature requirements
  • Twist protection for the sensor cable connected. This means that the cables can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 3…14
Temperature 0…100 °C
Max. pressure 6.0 bar (25 °C), 3.0 bar (100 °C)
Min. conductivity 150 µS/cm
Electrolyte Gel containing potassium chloride with KCI reservoir
Diaphragm Ceramic
Sensor shaft Glass
Shaft diameter 15 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers All DULCOMETER controllers
Typical applications Monitoring or control of chemical processes with neutral to highly-alkaline media and temperatures up to 100 °C.
Resistance to Disinfectant, high alkalinity
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, highly alkaline tempered glass, ceramic diaphragm, gel electrolyte, separate temperature measurement for temperature compensation needed
Order no.
PHEP-H 314 SE 1024882

pH Sensor PHEI 112 SE

Reliable online measurement of pH values in industrial wastewater/water – with DULCOTEST sensors

Your Benefits

  • Solid high-grade plastic housing with integrated process connection for direct installation in the process with ½” and ¾” NPT thread
  • Large dirt-repellent Teflon diaphragm protects against unwanted blocking of the reference
  • Double junction reference system for stability with chemically polluted water
  • Large electrolyte reservoir for long service lives
pH-range 1…12
Temperature 0…80 °C
Max. pressure 6.0 bar
Min. conductivity 50 µS/cm
Electrolyte Gel containing potassium chloride with a large KCI reservoir of gel
Diaphragm 1 x PTFE ring diaphragm and 1x ceramic diaphragm
Sensor shaft Plastic
Shaft diameter 17 ±0.2 mm (below the ½” NPT thread), 22 ±0.2 mm (below the ¾” thread)
Installation length 20 ±0.2 mm (from the lower end of the ½” thread), 60 ±0.2 mm (from the lower end of the ¾” thread)
Fitting position Vertical up to +25°
Thread ½” and ¾” NPT thread
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers all DULCOMETER controllers
Typical applications Municipal and industrial waste water, cooling water, process water: contaminated with solids and chemicals.
Resistance to Disinfectant, solids content (turbid water), water-soluble chemicals
Measuring principle, technology direct potentiometric measurement, 2 probes, double junction, gel electrolyte, large Teflon diaphragm, separate temperature measurement for temperature compensation needed
Order no.
PHEI 112 SE 1076610

pH Sensor PHER 112 SE

pH sensor optimised for use in contaminated water containing solids and for low conductivity of > 50 μS/cm at up to 80 °C/6 bar

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • The large dirt-repellent Teflon® diaphragm prevents the reference system from becoming blocked up
  • Long service life when solids are present
  • High-viscosity electrolyte combined with a salt reservoir prevents the electrolyte from ‘bleeding’
  • Long service life without drifts when there is clear water with low conductivity
  • Twist protection for the sensor cable connected. This means that the cables can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…80 °C
Max. pressure 6.0 bar
Min. conductivity 50 µS/cm
Electrolyte Gel containing potassium chloride with KCI reservoir
Diaphragm PTFE ring diaphragm
Sensor shaft Glass
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers All DULCOMETER controllers
Typical applications Municipal and industrial waste water, cooling water, process water: containing moderate amounts of solids without high levels of chemical contamination.
Resistance to Disinfectant, solids content (turbid types of water)
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, Teflon ring diaphragm, polymer electrolyte, separate temperature measurement for temperature compensation needed
Order no.
PHER 112 SE 1001586

PH sensor PHER-DJ 112 SE

pH sensor with double diaphragm (double junction) optimised for use in contaminated water containing solids and for low conductivity of > 10 μS/cm at up to 80 °C/6 bar.

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • The large dirt-repellent Teflon® diaphragm prevents the reference system from becoming blocked up
  • Long service life when solids are present
  • High-viscosity electrolyte combined with a salt reservoir prevents the electrolyte from ‘bleeding’
  • Long service life without drifts when there is clear water with low conductivity
  • Twist protection for the sensor cable connected. This means that the cables can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…80 °C
Max. pressure 6.0 bar
Min. conductivity 10 µS/cm
Electrolyte Gel containing potassium chloride with KCI reservoir
Diaphragm 2x PTFE ring diaphragm
Sensor shaft Glass
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers All DULCOMETER controllers
Typical applications Municipal and industrial waste water, cooling water, process water: contaminated with solids and chemicals, reverse osmosis, acid and alkaline gas scrubbers (without fluoride, HF), water with low conductivity
Resistance to Disinfectant, solids content (turbid types of water)
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, Teflon ring diaphragm, polymer electrolyte, separate temperature measurement for temperature compensation needed
Installation length Order no.
PHER-DJ 112 SE 120 ±3 mm 1108991

pH Sensor PHEX 112 SE

pH sensor optimised for use with contaminated water with a high solids content at 6 bar/100 °C or 16 bar/25 °C

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Diaphragm and reference system optimised for extremely high solids content
  • The solid electrolyte makes the diaphragm redundant and prevents the reference system from becoming blocked up
  • Long service life when sludge is present due to lack of a diaphragm
  • Long service life as the solid electrolyte prevents the electrolyte from ‘bleeding’
  • Stable reference system
  • Twist protection for the sensor cable connected. This means that the cable can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…100 °C
Max. pressure 16.0 bar (25 °C), 6.0 bar (100 °C)
Min. conductivity 500 µS/cm
Electrolyte Polymer containing potassium chloride (solid)
Diaphragm Circular gap diaphragm (solid electrolyte)
Sensor shaft Glass
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers all DULCOMETER controllers
Typical applications Waste process water: high solids content, no chemical contamination. Suspensions, sludge, emulsions. Not suitable in clear waters, not suitable for media with oxidation agents.
Resistance to Solids content (turbid types of water), sludge, emulsions
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, no diaphragm, polymer electrolyte, separate temperature measurement for temperature compensation needed
Installation length Order no.
PHEX 112 SE 120 ±3 mm 305096
PHEX 112 SE SLg225 225 ±3 mm 150061

pH Sensor PHED 112 SE

pH sensor optimised for use with chemically contaminated but clear water at up to 80 °C/8 bar

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Diaphragm and reference system optimised for use in chemically contaminated but clear water
  • Double junction: two coupled ceramic diaphragms protect the reference system
  • Long service life when chemical pollutants are present
  • Special construction permits a maximum pressure of 8 bar
  • Twist protection for the sensor cable connected. This means that the cables can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…80 °C
Max. pressure 8.0 bar
Min. conductivity 150 µS/cm
Electrolyte Gel containing potassium chloride
Diaphragm Double junction
Sensor shaft Glass
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers all DULCOMETER controllers
Typical applications Clear process, cooling and waste water polluted by chemicals
Resistance to Disinfectants, water-soluble chemicals
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, double junction, gel electrolyte, separate temperature measurement for temperature compensation needed
Order no.
PHED 112 SE 741036

pH Sensor PHEF 012 SE

pH sensor optimised for use with acidic water containing fluoride and abrasive water containing solids at up to 50 °C/7 bar

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Optimised pH glass for use in the presence of glass-corroding hydrofluoric acid (HF). HF is formed primarily in the presence of fluoride (F–) at a pH of < 4. Glass corrosion is promoted by a constant concentration of fluoride, a falling pH value and a rising temperature. The glass composition and structure of the PHEF type reduce the release of SiF4. Extended service life in the presence of fluoride (F–) at a pH of < 7
  • The flat shape of the glass diaphragm and large ring diaphragm facilitate use in contaminated water, which also contains abrasive solids
pH-range 0…12
Temperature 0…50 °C
Max. pressure 7.0 bar
Min. conductivity 150 µS/cm
Electrolyte Gel containing potassium chloride
Diaphragm HDPE ring diaphragm, flat (Double Junction)
Sensor shaft Epoxy
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers all DULCOMETER controllers
Typical applications A significantly longer service life can be achieved compared with standard pH sensors in media containing hydrofluoric acid, e.g. wastewater from the semiconductor industry or electroplating applications and air scrubbers.
Resistance to Disinfectant, solids content (turbid types of water), hydrofluoric acid (HF), abrasive particles
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, PE ring diaphragm, HF-compatible flat glass diaphragm, gel electrolyte, separate temperature measurement for temperature compensation needed
Order no.
PHEF 012 SE 1010511

pH sensor PHEF-DJ 112 SE

pH sensor with double diaphragm (double junction) optimised for acid water containing fluoride at up to 60 °C/8 bar

Your Benefits

  • Electrochemical combination probe: pH and reference electrode integrated
  • Precise and reliable pH measurement in water containing fluoride with low pH enables efficient processes and excellent process reliability
  • A special pH glass and dirt-repellent double junction can extend the service life of the sensor and thereby minimise downtimes as well as maintenance requirements
  • The combination of hydrofluoric acid-resistant glass and PTFE double junction makes the sensor suited to gas scrubbing applications where fluoride and dirt may be encountered at the same time
  • Twist protection for the sensor cable connection ensures that the cable can remain connected during installation and removal of the sensor, reducing moisture on the plug-in contacts
pH-range 1…12
Temperature 0…60 °C
Max. pressure 6.0 bar
Min. conductivity 10 µS/cm
Electrolyte Gel containing potassium chloride with KCI reservoir
Diaphragm 2 x PTFE ring diaphragm, double junction
Sensor shaft Glass
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers all DULCOMETER controllers
Typical applications A significantly longer service life can be achieved compared with standard pH sensors in media containing hydrofluoric acid, e.g. wastewater from the semiconductor industry or electroplating applications and air scrubbers. Low conductivity water.
Resistance to Disinfectant, dirt
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, gel electrolyte, PTFE diaphragm, separate temperature measurement needed for temperature compensation
Order no.
PHEF-DJ 112 SE 1114185

pH Sensor PHEN 112 SE

Refillable pH sensor optimised for use with chemically contaminated water at up to 80 °C/without excess pressure

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Renewable liquid electrolyte by continuous replenishment from an electrolyte bottle installed above the electrode
  • 1 ceramic diaphragm made of special material and with an optimised size / with optimised pore diameter
  • Twist protection for the sensor cable connected. This means that the cables can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Long service life in the presence of chemicals dissolved in the water, which could contaminate the reference system
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…80 °C
Max. pressure Operation at atmospheric pressure
Min. conductivity 150 µS/cm
Electrolyte KCL electrolyte, refillable
Diaphragm Ceramic
Sensor shaft Glass
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers all DULCOMETER controllers
Typical applications Process water, cooling water, waste water: chemically contaminated, clear
Resistance to Disinfectant, only for clear types of water
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, liquid electrolyte, 1 ceramic diaphragm, separate temperature measurement for temperature compensation needed
Order no.
PHEN 112 SE 305090

Delivered without PE storage tank and hose

Order no.
PE storage tank with connectors and tube 305058

For the PE storage tank, we recommend fitting approx. 0.5 – 1 m above the level of the measurement medium.

Capacity Order no.
KCl solution, 3 molar 250 ml 791440
KCl solution, 3 molar 1,000 ml 791441

pH Sensor PHEN 112 SE 3D

Refillable pH sensor optimised for use in contaminated water containing solids and water with a low conductivity of > 50 μS/cm at up to 80 °C/without overpressure

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Renewable liquid electrolyte through continuous replenishment from an electrolyte bottle installed above the electrode
  • 3 ceramic diaphragms made of special material, with optimised size and optimised pore diameter
  • Twist protection for the sensor cable connected. This means that the cable can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Long service life in water with low conductivity of > 50 µS/cm and where solids are present
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…80 °C
Max. pressure Operation at atmospheric pressure
Min. conductivity 50 µS/cm
Electrolyte KCL electrolyte, refillable
Diaphragm 3 ceramic diaphragms
Sensor shaft Glass
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers All DULCOMETER controllers
Typical applications Wastewater, water with low conductivity, e.g. from reverse osmosis.
Resistance to Disinfectant, solids content (turbid types of water)
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, liquid electrolyte, 1 ceramic diaphragm, separate temperature measurement for temperature compensation needed
Order no.
PHEN 112 SE 3D 150078

pH Sensor PHEK 112 S

pH sensor for use with manual measuring instruments, with plastic shaft, optimised for use in potable water treatment, swimming pools/hot tubs at up to 80 °C/3 bar

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Diaphragm and reference system optimised for use in swimming pools and for potable water
  • Ceramic diaphragm with special material, optimised size and optimised pore diameter
  • With plastic shaft to prevent glass breakage
  • Mechanical protection of the glass diaphragm
  • Long service life due to reduced diffusion (‘bleeding’) of the electrolyte
  • Long service life due to the material, which is inert to aggressive disinfectants
  • Stable reference system
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…60 °C
Max. pressure 3.0 bar
Min. conductivity 150 µS/cm
Electrolyte Gel containing potassium chloride
Diaphragm Ceramic
Sensor shaft Polycarbonate
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread none
Electrical Connection SN6 plug-in head
Enclosure rating IP 65
Process integration Immersion by tripod or manually
Controllers all DULCOMETER controllers
Typical applications Hand-held measurement in swimming pools, potable water.
Resistance to Disinfectant
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, gel electrolyte, ceramic diaphragm, separate temperature measurement for temperature compensation needed
Order no.
PHEK 112 S 305051

pH Sensor PHEK 112 SE

pH sensor with plastic shaft, optimised for use in potable water treatment, swimming pools/hot tubs at up to 60 °C/3 bar

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Diaphragm and reference system optimised for use in swimming pools and for potable water
  • Ceramic diaphragm with special material, optimised size and optimised pore diameter
  • With plastic shaft to prevent glass breakage
  • Mechanical protection of the glass diaphragm
  • Long service life due to reduced diffusion (‘bleeding’) of the electrolyte
  • Long service life due to the material, which is inert to aggressive disinfectants
  • Stable reference system
  • Twist protection for the sensor cable connected. This means that the cable can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…60 °C
Max. pressure 3.0 bar
Min. conductivity 150 µS/cm
Electrolyte Gel containing potassium chloride
Diaphragm Ceramic
Sensor shaft Polycarbonate
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers all DULCOMETER controllers
Typical applications Swimming pool, potable water, aquariums
Resistance to Disinfectant
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, gel electrolyte, ceramic diaphragm, separate temperature measurement for temperature compensation needed
Order no.
PHEK 112 SE 1028457

pH Sensor PHEK-L 112 SE

pH sensor with plastic shaft, optimised for use in potable water treatment, swimming pools/hot tubs, horizontal installation possible, at up to 60 °C/3 bar

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • With plastic shaft to prevent glass breakage
  • Horizontal (level) installation possible (90° angle) (usually limited to 0 – 75° angle)
  • Diaphragm and reference system optimised for use in swimming pools and for potable water
  • Ceramic diaphragm with special material and optimised size / optimised pore diameter
  • Long service life due to reduced diffusion (‘bleeding’) of the electrolyte
  • Twist protection for the sensor cable connected. This means that the cable can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Long service life due to the material, which is inert to aggressive disinfectants
  • Stable reference system
pH-range 1…12
Temperature 0…60 °C
Max. pressure 3.0 bar
Min. conductivity 150 µS/cm
Electrolyte Gel containing potassium chloride
Diaphragm Ceramic
Sensor shaft Polycarbonate
Shaft diameter 12 mm
Installation length 120 ±3 mm
Fitting position Vertical to horizontal
Thread PG 13.5
Electrical Connection SN6 plug-in head, rotatable with a ProMinent cable
Enclosure rating IP 65
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers all DULCOMETER controllers
Typical applications Swimming pools, potable water, aquaria. Horizontal installation possible.
Resistance to Disinfectant
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, gel electrolyte, ceramic diaphragm, separate temperature measurement for temperature compensation needed
Order no.
PHEK-L 112 SE 1034918

pH Sensor PHEPT 112 VE

pH sensor with integral temperature measurement, optimised for use with clear process water and changing process temperature of up to 80 °C/6 bar

Your Benefits

  • Electrochemical combination electrode: pH and reference electrode integrated
  • Diaphragm and reference system optimised for exacting process requirements
  • Ceramic diaphragm with special material, optimised size and optimised pore diameter
  • Long service life due to reduced diffusion (“bleeding”) of the electrolyte
  • Long service life due to the material, which is inert to aggressive chemicals
  • Stable reference system for high pressure/temperature requirements
  • Integrated Pt 100 temperature sensor for temperature compensation of the pH measurement in higher-order measuring instruments eliminates the need for an additional sensor housing and external temperature sensor
  • VARIO Pin plug-in head with IP 67 specification
  • Twist protection for the sensor cable connected. This means that the cable can remain connected during installation and dismantling of the sensor, avoiding troublesome moisture on the connector contacts
  • Lead-free glass for advanced and environmentally-friendly production, use and disposal (RoHS-compliant)
pH-range 1…12
Temperature 0…80 °C
Max. pressure 6.0 bar
Min. conductivity 150 µS/cm
Electrolyte Gel containing potassium chloride
Diaphragm Ceramic
Sensor shaft Glass
Shaft diameter 15 mm
Installation length 120 ±3 mm
Fitting position Vertical up to +25°
Thread PG 13.5
Electrical Connection VARIO Pin plug-in head
Enclosure rating IP 67
Process integration Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting), tank, channel: Immersion in the immersion tube
Controllers All DULCOMETER controllers (with the exception of DCCa pH)
Typical applications Drinking water, clear process water, process water with temperature change
Resistance to Disinfectant
Measuring principle, technology Direct potentiometric measurement, 2 electrodes, gel electrolyte, ceramic diaphragm, integrated temperature measurement for temperature compensation
Order no.
PHEPT 112 VE 1004571

DULCOTEST pH Sensors Kataloğu

Deha Smart

Meclis Mah. Atatürk Cad. B2 No:109 G İç Kapı No:13 Sancaktepe / İstanbul

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