Knick pH Sensors
For measuring pH values in process applications, we offer different sensor versions, including glass and glass-free ISFET sensors. The digital pH measurement is performed using Memosens technology, which enables a preventative diagnostics buffer of the sensor condition.
Knick analog and digital pH sensors are available with explosion protection, in different sensor lengths, and with various connection options. They are suitable for a wide range of fittings, including SensoGate and Ceramat retractable fittings as well as inline, flow-through, and immersion fittings.
MemoSuite Sensor Management Tool
Memosens contactless sensor coupling
Polysulfone Body | For water and wastewater treatment
The standard pH sensor for water and wastewater applications; rugged and easy to maintain
- Low maintenance, no refilling or pressurizing of electrolyte
- Integrated temperature detector
- 2 ceramic junctions
- Robust due to a plastic body made of polysulfone
- Integrated probe guard
- VP connector
The SE503 pH sensor has a polysulfone plastic body and is rugged and resistant to contamination. The process sensor is also suitable for low temperature applications and provides reliable pH measurement with low cost and low maintenance.
Specifications
| Measurement Parameter: | pH |
| Connector: | VP (VarioPin) |
| Measuring Range: | 0 … 14 pH |
| Explosion protection: | No |
| Length: | 120 mm |
| Process Connection: | PG 13.5 |
| Temperature: | –5 … 80 °C ( 23 ... 176 °F) |
| Pressure, relative: | 0 … 2 bar |
| Temperature Detector: | Pt1000 |
| Body Material: | Polysulfone |
| Junction: | Ceramic (2×) |
| Reference System: | Ag/AgCl solid polymer |
Sigma glass | For water and wastewater treatment
Reasonably priced sensor for water and wastewater treatment
- Perfect galvanic isolation thanks to Memosens technology
- No influence of humidity in the connector
- Precalibration in the lab
- Digital data transfer
- Integrated sensor diagnostics
- Low maintenance, no refilling of electrolyte
- Integrated temperature detector
- Ground-glass sleeve junction
- Sigma glass; low impedance for low-temperature applications
Thanks to its ground-glass sleeve junction even applicable in heavily contaminated media. Designed for MemoRail applications. High stability and a long life cycle are achieved by the special design.
Through a ground-glass sleeve junction the reference system is in direct contact with the measured medium. There is hardly any risk of contamination or blocking of the junction.
Measurement is possible even at low temperatures thanks to a special low-impedance glass.
Specifications
| Measurement Parameter: | pH |
| Connector: | Memosens |
| Measuring Range: | 0 … 14 pH |
| Explosion protection: | No |
| Length: | 120 mm |
| Process Connection: | PG 13.5 |
| Temperature: | –5 … 80 °C ( 23 ... 176 °F) |
| Pressure, relative: | 0 … 4 bar |
| Temperature Detector: | NTC 30 kΩ |
| Junction: | Ground glass ring |
| Reference System: | Ag/AgCl, gel electrolyte |
| Sensor Material: | Low-impedance Sigma glass |
CIP/SIP capable and autoclavable
Break-proof ISFET sensor, digital, with Memosens technology
- Break-proof sensor body
- Short response time
- Integrated temperature detector
- CIP/SIP capable, autoclavable
- Perfect galvanic isolation thanks to Memosens technology
- No impact of moisture in the plug-in connection
- Precalibration in the lab
- Digital data transfer
- Integrated sensor diagnostics
The SE547N/*-NMSN-A2 digital pH sensor is a glass-free pH sensor with a break-proof PEEK body and ISFET chip.
The sensor is CIP/SIP capable and autoclavable as well. It is particularly suitable for hygienic applications in the food and pharmaceutical sectors.
In addition, Memosens technology provides all known advantages when it comes to handling and sensor diagnostics.
Applications
Hygienic and sterile applications, food and pharmaceutical sectors, and biotechnology
Specifications
| Measurement Parameter: | pH |
| Connector: | Memosens |
| Measuring Range: | 0 … 14 pH (limited useful life with concurrently high pH value and high temperature) |
| Length: | 120 mm |
| Process Connection: | PG 13.5 |
| Temperature: | -15 … 135 °C (5 … 275 °F) |
| Pressure, relative: | –0.2 ... 10 bar (100 °C/212 °F), 0 ... 3 bar (135 °C/275 °F) |
| Process-Wetted Materials: | PEEK, EPDM (both FDA-compliant) |
| Temperature Detector: | Pt1000 |
| Junction: | Ceramic (1×) |
| Reference System: | Ag/AgCl |
| Sensor Material: | ISFET chip |
CIP/SIP capable and autoclavable
Break-proof ISFET sensor, digital, with Memosens technology
- Break-proof sensor body
- Short response time
- Integrated temperature detector
- CIP/SIP capable, autoclavable
- Perfect galvanic isolation thanks to Memosens technology
- No impact of moisture in the plug-in connection
- Precalibration in the lab
- Digital data transfer
- Integrated sensor diagnostics
The SE547N/*-NMSN-A2 digital pH sensor is a glass-free pH sensor with a break-proof PEEK body and ISFET chip.
The sensor is CIP/SIP capable and autoclavable as well. It is particularly suitable for hygienic applications in the food and pharmaceutical sectors.
In addition, Memosens technology provides all known advantages when it comes to handling and sensor diagnostics.
Applications
Hygienic and sterile applications, food and pharmaceutical sectors, and biotechnology
Specifications
| Measurement Parameter: | pH |
| Connector: | Memosens |
| Measuring Range: | 0 … 14 pH (limited useful life with concurrently high pH value and high temperature) |
| Length: | 225 mm |
| Process Connection: | PG 13.5 |
| Temperature: | -15 … 135 °C (5 … 275 °F) |
| Pressure, relative: | –0.2 ... 10 bar (100 °C/212 °F), 0 ... 3 bar (135 °C/275 °F) |
| Process-Wetted Materials: | PEEK, EPDM (both FDA-compliant) |
| Temperature Detector: | Pt1000 |
| Junction: | Ceramic (1×) |
| Reference System: | Ag/AgCl |
| Sensor Material: | ISFET chip |
Ex | For very high ionic strength media
Low-maintenance sensor for demanding process application in the chemical industry, digital, with Memosens technology
- Perfect galvanic isolation thanks to Memosens technology
- No influence of humidity in the connector
- Precalibration in the lab
- Digital data transfer
- Integrated sensor diagnostics
- Low maintenance, no refilling of electrolyte
- Integrated temperature detector
- Open junctions, no blocking
- Alpha glass, medium impedance, universal glass, fluoride resistant
High accuracy, stability, rapidness, and a long life cycle are achieved by the special design. Through 2 open junctions, the reference system is in direct contact with the measured medium. There is hardly any risk of contamination or blocking of the junction. The high content and special distribution of potassium chloride in the polymer reduces measurement disturbances which could be caused by liquid junction potentials.
Applications
Industrial applications, dyes, precipitation reactions, polluted media
Specifications
| Measurement Parameter: | pH |
| Connector: | Memosens |
| Measuring Range: | 0 … 14 pH |
| Explosion protection: | Yes |
| Length: | 120 mm |
| Process Connection: | PG 13.5 |
| Temperature: | 0 … 130 °C |
| Pressure, relative: | 0 … 10 bar |
| Temperature Detector: | NTC 30 kΩ |
| Junction: | Hole (2×) |
| Reference System: | Ag/AgCl, polymer electrolyte |
| Sensor Material: | Alpha glass |
Ex | For very high ionic strength media
Low-maintenance sensor for demanding process application in the chemical industry, digital, with Memosens technology
- Perfect galvanic isolation thanks to Memosens technology
- No influence of humidity in the connector
- Precalibration in the lab
- Digital data transfer
- Integrated sensor diagnostics
- Low maintenance, no refilling of electrolyte
- Integrated temperature detector
- Open junctions, no blocking
- Alpha glass, medium impedance, universal glass, fluoride resistant
High accuracy, stability, rapidness, and a long life cycle are achieved by the special design. Through 2 open junctions, the reference system is in direct contact with the measured medium. There is hardly any risk of contamination or blocking of the junction. The high content and special distribution of potassium chloride in the polymer reduces measurement disturbances which could be caused by liquid junction potentials.
Applications
Industrial applications, dyes, precipitation reactions, polluted media
Specifications
| Measurement Parameter: | pH |
| Connector: | Memosens |
| Measuring Range: | 0 … 14 pH |
| Explosion protection: | Yes |
| Length: | 225 mm |
| Process Connection: | PG 13.5 |
| Temperature: | 0 … 130 °C |
| Pressure, relative: | 0 … 10 bar |
| Temperature Detector: | NTC 30 kΩ |
| Junction: | Hole (2×) |
| Reference System: | Ag/AgCl, polymer electrolyte |
| Sensor Material: | Alpha glass |
Ex | For very high ionic strength media
Low-maintenance sensor for demanding process application in the chemical industry, digital, with Memosens technology
- Perfect galvanic isolation thanks to Memosens technology
- No influence of humidity in the connector
- Precalibration in the lab
- Digital data transfer
- Integrated sensor diagnostics
- Low maintenance, no refilling of electrolyte
- Integrated temperature detector
- Open junctions, no blocking
- Alpha glass, medium impedance, universal glass, fluoride resistant
High accuracy, stability, rapidness, and a long life cycle are achieved by the special design. Through 2 open junctions, the reference system is in direct contact with the measured medium. There is hardly any risk of contamination or blocking of the junction. The high content and special distribution of potassium chloride in the polymer reduces measurement disturbances which could be caused by liquid junction potentials.
Applications
Industrial applications, dyes, precipitation reactions, polluted media
Specifications
| Measurement Parameter: | pH |
| Connector: | Memosens |
| Measuring Range: | 0 … 14 pH |
| Explosion protection: | Yes |
| Length: | 325 mm |
| Process Connection: | PG 13.5 |
| Temperature: | 0 … 130 °C |
| Pressure, relative: | 0 … 10 bar |
| Temperature Detector: | NTC 30 kΩ |
| Junction: | Hole (2×) |
| Reference System: | Ag/AgCl, polymer electrolyte |
| Sensor Material: | Alpha glass |
Ex | For very high ionic strength media
Low-maintenance sensor for demanding process application in the chemical industry, digital, with Memosens technology
- Perfect galvanic isolation thanks to Memosens technology
- No influence of humidity in the connector
- Precalibration in the lab
- Digital data transfer
- Integrated sensor diagnostics
- Low maintenance, no refilling of electrolyte
- Integrated temperature detector
- Open junctions, no blocking
- Alpha glass, medium impedance, universal glass, fluoride resistant
High accuracy, stability, rapidness, and a long life cycle are achieved by the special design. Through 2 open junctions, the reference system is in direct contact with the measured medium. There is hardly any risk of contamination or blocking of the junction. The high content and special distribution of potassium chloride in the polymer reduces measurement disturbances which could be caused by liquid junction potentials.
Applications
Industrial applications, dyes, precipitation reactions, polluted media
Specifications
| Measurement Parameter: | pH |
| Connector: | Memosens |
| Measuring Range: | 0 … 14 pH |
| Explosion protection: | Yes |
| Length: | 425 mm |
| Process Connection: | PG 13.5 |
| Temperature: | 0 … 130 °C |
| Pressure, relative: | 0 … 10 bar |
| Junction: | Hole (2×) |
| Reference System: | Ag/AgCl, polymer electrolyte |
| Sensor Material: | Alpha glass |
Ex | For very high ionic strength media
Low-maintenance sensor for demanding process application in the chemical industry
- Low maintenance, no refilling of electrolyte
- Integrated temperature detector
- Open junctions, no blocking
- Alpha glass, medium impedance, universal glass, fluoride resistant
High accuracy, stability, rapidness, and a long life cycle are achieved by the special design. Through 2 open junctions, the reference system is in direct contact with the measured medium. There is hardly any risk of contamination or blocking of the junction. The high content and special distribution of potassium chloride in the polymer reduces measurement disturbances which could be caused by liquid junction potentials.
Applications
Industrial applications, dyes, precipitation reactions, polluted media
Specifications
| Measurement Parameter: | pH |
| Connector: | VP (VarioPin) |
| Measuring Range: | 0 … 14 pH |
| Explosion protection: | Yes |
| Length: | 120 mm |
| Process Connection: | PG 13.5 |
| Temperature: | 0 … 130 °C |
| Pressure, relative: | 0 … 10 bar |
| Temperature Detector: | Pt1000 |
| Junction: | Hole (2×) |
| Reference System: | Ag/AgCl, polymer electrolyte |
| Sensor Material: | Alpha glass |