
Specs at a glance
-
Measuring range
ORP: –1 500 to 1 500 mV
Application A
• pH: 1 to 12
Application B
• pH: 0 to 14 -
Process temperature
Application A: –15 to 80 °C (5 to 176 °F)
Application B: 0 to 135 °C (32 to 275 °F) -
Process pressure
0.8 to 17 bar (11.6 to 246,5 psi) absolute
Field of application
Memosens CPS16E is suitable for simultaneous pH and ORP measurement in applications with long-term stable conditions. Thanks to its pH and ORP elements, the sensor offers a better process overview and enables tighter process control. Memosens CPS16E features Memosens 2.0 digital technology, offering extended data storage for predictive maintenance. The pH/ORP sensor resists moisture and enables lab calibration which makes the operator's daily tasks easier and maximizes process integrity.
Long-term monitoring or limit control in processes with stable process conditions:
- Chemical processes
- Pulp and paper industry
- Power stations (e.g. flue gas cleaning)
- Incinerator plants
- Mining
- WastewaterWater treatment:
- Drinking water
- Cooling water
- Well water
With ATEX, IECEx, CSA C/US, NEPSI, Japan, INMETRO approvals for use in hazardous areas, zones 0, 1 and 2.
Benefits
Memosens 2.0 offers extended storage of calibration and process data, enabling better trend identification and providing a future-proof basis for predictive maintenance and enhanced IIoT services.
The additional platinum electrode enables constant monitoring of reference impedance and is a reliable indicator of the sensor quality.
Simultaneous measurement of pH, ORP and rH values (in rH mode) offers a better process overview and allows for a tighter process control.
Robust: Large PTFE ring junction and reference with ion trap prevent poisoning of the sensor.
Suitable for harsh applications: Process glass for highly alkaline media and pressure-stable up to 17 bar (246 psi).
Reduced operating costs: Lab calibration and fast sensor exchange on site minimize process downtime. Sensor regeneration in the laboratory extends the sensor lifetime.
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Non-contact, digital signal transmission ensures reliable measurements resulting in maximum process safety.
Videos
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The pH-value of a liquid can be calculated using the potentiometric measurement principle. This video shows what it is about and how this measuring principle works.
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Memosens converts the measured value to a digital signal and transfers it to the transmitter without a contacting connection. This video shows how Memosens optimizes process control and maintenance.
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
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Simplicity
Variable |
Predecessor
Success stories
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Measuring principle
Potentiometric
-
Application
Long-term monitoring and limit control in processes with stable process conditions
• Chemical processes
• Pulp and paper industry
• Waste incinerators and gas scrubbers
• Mining
• Wastewater -
Characteristic
Combination of pH and ORP electrode for standard applications in process technology and environmental engineering
Poison-resistant reference with ion trap -
Measuring range
ORP: –1 500 to 1 500 mV
Application A
• pH: 1 to 12
Application B
• pH: 0 to 14 -
Measuring principle
Gel compact electrode with PTFE ring-junction and with ion trap
Pt-disc as additional ORP element
rH measurement and control of the reference impedance -
Design
All shaft lengths with temperature sensor
Advanced gel technology -
Material
Sensor shaft: Glass to suit process
pH membrane glass: Type A, B
Metal lead: Ag/AgCl
Aperture: Ring-shaped PFTE junction
ORP measuring element: Platinum
O-ring: FKM
Process coupling: PPS fiber-glass reinforced
Nameplate: Ceramic metal oxide -
Dimension
Diameter: 12 mm (0.47 inch)
Shaft lengths: 120, 225 and 360 mm
(4.72, 8.86, 14.17 and 16.73 inch) -
Process temperature
Application A: –15 to 80 °C (5 to 176 °F)
Application B: 0 to 135 °C (32 to 275 °F) -
Process pressure
0.8 to 17 bar (11.6 to 246,5 psi) absolute
-
Temperature sensor
NTC 30k
-
Ex certification
With ATEX, IECEx, CSA C/US, NEPSI, Japan Ex and INMETRO approvals for use in
hazardous areas Zone 0, Zone 1 and Zone 2 -
Connection
Inductive, digital connection head with Memosens 2.0 technology
-
Ingress protection
IP68
-
Measuring principle
Sensor ORP / Redox
-
Application
Long-term monitoring and limit control in processes with stable process conditions
Chemical processes
• Pulp and paper industry
• Waste incinerators and gas scrubbers
• Mining
• Wastewater -
Characteristic
Combination of pH and ORP electrode for standard applications in process technology and environmental engineering
Poison-resistant reference with ion trap -
Measuring range
ORP: –1 500 … 1 500 mV
Application: A
• pH: 1 to 12
Application B
• pH: 0 to 14 -
Measuring principle
Gel compact electrode with PTFE ring-junction with ion trap
Pt-disc as additional ORP element
rH measurement and control of the reference impedance -
Design
All shaft lengths with temperature sensor
Advanced gel technology -
Material
Sensor shaft: Glass to suit process
pH membrane glass: Type A, B
Metal lead: Ag/AgCl
Aperture: ring-shaped PFTE junction
ORP measuring element: Platinum
O-ring: FKM
Process coupling: PPS fiber-glass reinforced
Nameplate: Ceramic metal oxide -
Dimension
Diameter: 12 mm (0.47 inch)
Shaft lengths: 120, 225 and 360 mm
(4.72, 8.86, 14.17 and 16.73 inch) -
Process temperature
Application A: –15 to 80 °C (5 to 176 °F)
Application B: 0 to 135 °C (32 to 275 °F) -
Process pressure
0.8 to 17 bar (11.6 to 246,5 psi) absolute
-
Temperature sensor
NTK 30k
-
Ex certification
With ATEX, IECEx, CSA C/US, NEPSI, Japan Ex and INMETRO approvals for use in
hazardous areas Zone 0, Zone 1 and Zone 2 -
Connection
Inductive, digital connection head with Memosens 2.0 technology
-
Ingress protection
IP68
-
-
Technical Information (TI)
TI Memosens CPS16E
English version - 04/2025
New version available in English
pH/ORP sensor for standard applications in process technology and environmental engineering
EN 30/04/202527/07/2021Language:
English
Version:
30/04/2025
File size:
818.9 KB
File name:
TI01600CEN_0225-00.pdf
-
-
-
Operating Instruction (BA)
Combined pH/ORP sensors CPS16E, CPS76E and CPS96E
English version - 10/2021
New version available in English
pH and ORP measurement
EN 14/10/202130/07/2021Language:
English
Version:
14/10/2021
File size:
756.6 KB
File name:
BA02142CEN_0221.pdf
-
-
-
Technical Information (TI)
TI Memosens CPS16E
-
Technical Information (TI)
English version - 04/2025pH/ORP sensor for standard applications in process technology and environmental engineering
EN 30/04/202527/07/2021Language:
English
Version:
30/04/2025
File size:
818.9 KB
File name:
TI01600CEN_0225-00.pdf
-
-
-
Operating Instruction (BA)
Combined pH/ORP sensors CPS16E, CPS76E and CPS96E
-
Operating Instruction (BA)
English version - 10/2021pH and ORP measurement
EN 14/10/202130/07/2021Language:
English
Version:
14/10/2021
File size:
756.6 KB
File name:
BA02142CEN_0221.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens pH/ORP sensors
-
Ex Safety Instruction (XA)
English version - 11/2021pH and ORP measurement
Supplement to BA01988C, BA02142C
Safety instructions for electrical apparatus in explosion-hazardous
areas
UK Ex II 1 G Ex ia IIC T3/T4/T6 Ga
UK Ex II 1G Ex ia IIC T4/T6 GaLanguage:
English
Version:
26/11/2021
File size:
684.7 KB
File name:
XA02588CEN_0221-00.pdf
-
-
-
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors
-
Ex Safety Instruction (XA)
English version - 11/2024pH and ORP measurement
Supplement to: BA01988C, BA02142C
Safety instructions for electrical apparatus in explosion-hazardous
areas
NEPSI Ex ia IIC T3/T4/T6 Ga
NEPSI Ex ia IIC T4/T6 GaEN 19/11/2024Language:
English
Version:
19/11/2024
File size:
537 KB
File name:
XA03488CEN_0124-00.pdf
-
-
-
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors
-
Ex Safety Instruction (XA)
English version - 04/2025pH and ORP measurement
EAC Ex 0Ex ia IIC T3/T4/T6 Ga X
EAC Ex 0Ex ia IIC T4/T6 Ga XEN 24/04/202509/04/202526/01/2022Language:
English
Version:
24/04/2025
File size:
423.7 KB
File name:
XA02817CEN_0325-00.pdf
-
-
-
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors
-
Ex Safety Instruction (XA)
English version - 01/2025pH and ORP measurement
Supplement to BA01988C, BA02142C
Safety instructions for electrical apparatus for explosion-hazardous areas
ATEX II 1G Ex ia IIC T3/T4/T6 Ga
ATEX II 1G Ex ia IIC T4/T6 Ga
IECEx Ex ia IIC T3/T4/T6 Ga
IECEx Ex ia IIC T4/T6 GaEN 15/01/202523/04/202118/02/202103/07/2020Language:
English
Version:
15/01/2025
File size:
496.1 KB
File name:
XA01991CEN_0424-00.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens pH/ORP sensors
-
Ex Safety Instruction (XA)
English version - 09/2021pH and ORP measurement
Supplement to: BA01988C, BA02142C
Safety instructions for electrical apparatus in explosion-hazardous
areas
NEPSI Ex ia IIC T3/T4/T6 Ga
NEPSI Ex ia IIC T4/T6 GaEN 07/09/202105/08/2020Language:
English
Version:
07/09/2021
File size:
529.3 KB
File name:
XA02113CEN_0221.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens pH/ORP sensors
-
Ex Safety Instruction (XA)
English version - 10/2021pH and ORP measurement
Supplement to BA01988C, BA02142C
Safety instructions for electrical apparatus in explosion-hazardous
areas
KOR Ex ia IIC T3/T4/T6 Ga
KOR Ex ia IIC T4/T6 GaEN 22/10/2021Language:
English
Version:
22/10/2021
File size:
425.6 KB
File name:
XA02739CEN_0121.pdf
-
-
-
Ex Safety Instruction (XA)
XA Memosens pH/ORP sensors
-
Ex Safety Instruction (XA)
English version - 11/2024pH and ORP measurement
Safety instructions for electrical apparatus in explosion-hazardous
areasEN 27/11/202426/08/2024Language:
English
Version:
27/11/2024
File size:
503.3 KB
File name:
XA03347CEN_0224-00.pdf
-
-
-
Ex Safety Instruction (XA)
Memosens pH/ORP sensors
-
Ex Safety Instruction (XA)
English version - 04/2021pH and ORP measurement
Safety instructions for electrical apparatus in explosion-hazardous
areasEN 22/04/202131/07/2020Language:
English
Version:
22/04/2021
File size:
505.2 KB
File name:
XA02082CEN_0221.pdf
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