Analog and digital sensors
For measuring pH, ORP, conductivity, and oxygen in process applications, we offer a variety of analog and digital Memosens sensors that were developed and optimized in close collaboration with users. Knick sensors require little maintenance and provide highly precise measurements with a robust design and long-lasting materials for the chemical, pharmaceutical, and food industries, as well as in the areas of energy and the environment.
The digital measurement is performed using Memosens technology, which enables preventative diagnostics for sensor health and offers many advantages.
Memosens Sensors – The Advantages at a Glance
- Plug & measure – sensor replacement in a matter of seconds with pre-calibrated sensors
- Easy and safe plugging thanks to its bayonet coupling
- Contactless, digital data transmission
- All critical data are available in the sensor
- Longer sensor service life
- Error-free measurements even under the most adverse conditions
- Only one cable system for all sensors
- The measurements are not affected by excessive cable lengths
SE554 pH Sensor | Memosens | 120 mm | Ex | For very high ionic strength media
SE554X/1-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE558 pH Sensor | Memosens | 120 mm | Ex | For ultrapure water, water and analytical chemistry
SE558X/1-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE555 pH Sensor | Memosens | 120 mm | Ex | Sterilizable | For aggressive media
SE555X/1-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE554 pH Sensor | Memosens | 225 mm | Ex | For very high ionic strength media
SE554X/2-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE560 pH Sensor | VP | 120 mm | For low-conductivity media and low temperatures
SE560
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE564 ORP Sensor | Memosens | 120 mm | Ex | For highly contaminated media with pressure fluctuations
SE564X/1-NMSN-B1
Measuring Range: ± 1500 mV
Process Connection: PG 13.5
SE571 pH Sensor | Memosens | 120 mm | Ex | For demanding applications in the chemical industry
SE571X/1-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE559 pH Sensor | Memosens | 120 mm | Ex | For water and analytical chemistry
SE559X/1-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE554 pH Sensor | VP | 120 mm | Ex | For very high ionic strength media
SE554X/1-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE603 4-Electrode Conductivity Sensor | Fixed cable | Very high corrosion resistance
SE603
Electrode Material: Platinum
Measuring Range: Approx. 0.5 µS/cm … 600 mS/cm
Process Connection: Special flange
SE555 pH Sensor | Memosens | 225 mm | Ex | Sterilizable | For aggressive media
SE555X/2-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE740 Optical Oxygen Sensor | M12 (8 pins) | 120 mm | For demanding hygienic environments
SE740/1
Measuring Range: DO: 4 ppb … 25 ppm, pO₂: 0.1 ... 600 mbar
Process Connection: PG 13.5
SE630 Conductivity Sensor | 2 Graphite electrodes | Memosens | NPT 1 | Measurement of conductivities up to 20 mS/cm
SE630N-N1MSYB0M
Electrode Material: Special graphite
Measuring Range: 10 µS/cm … 20 mS/cm
Process Connection: NPT 1"
SE558 pH Sensor | VP | 120 mm | Ex | For ultrapure water, water and analytical chemistry
SE558X/1-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE615 Conductivity Sensor | 2 Graphite electrodes | Memosens | 120 mm | For water and wastewater treatment
SE615/1-MS
Measuring Range: 10 µS/cm … 20 mS/cm
Process Connection: PG 13.5
SE515 pH Sensor | Memosens | 120 mm | Sigma glass | For water and wastewater treatment
SE515N/1-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE604 2-Electrode Conductivity Sensor | Memosens | Ex | Measuring range from ultrapure water to 500 μS/cm
SE604X-MS
Electrode Material: Stainless steel 1.4571
Measuring Range: 0.001 … 500 µS/cm
Process Connection: G 1"
SE554 pH/ORP Sensor | Memosens | 225 mm | Ex | For very high ionic strength media
SE554X/2-AMSN-B1
Measuring Range: 0 … 14 pH, ± 1500 mV
Process Connection: PG 13.5
SE555 pH Sensor | Memosens | 325 mm | Ex | Sterilizable | For aggressive media
SE555X/3-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE503 pH Sensor | VP | 120 mm | Polysulfone Body | For water and wastewater treatment
SE503N/1-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE604 2-Electrode Conductivity Sensor | Memosens | Measuring range from ultrapure water to 500 μS/cm
SE604-MS
Electrode Material: Stainless steel 1.4571
Measuring Range: 0.001 … 500 µS/cm
Process Connection: G 1"
SE554 pH Sensor | VP | 225 mm | Ex | For very high ionic strength media
SE554X/2-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE555 pH Sensor | Coax (S8) | 120 mm | Ex | Sterilizable | For aggressive media
SE555X/1-NS8N
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE571 pH Sensor | Memosens | 225 mm | Ex | For demanding applications in the chemical industry
SE571X/2-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE555 pH/ORP Sensor | Memosens | 120 mm | Ex | CIP/SIP capable | Sterilizable | For aggressive media
SE555X/1-AMSN-B1
Measuring Range: 0 … 14 pH, ± 1500 mV
Process Connection: PG 13.5
SE706 Oxygen Sensor | Memosens | 120 mm | Ex | Measuring range (resolution) 0 ... 50 mg/l (6 μg/l)
SE706X/1-NMSN
Measuring Range: pO₂ < 1,200 mbar (17.4 psi)
SE707 Oxygen Sensor | Memosens | 120 mm | Ex | Measuring range (resolution) 0 ... 50 mg/l (1 μg/l)
SE707X/1-NMSN
Measuring Range: pO₂ < 1,200 mbar (17.4 psi)
SE715 Oxygen Sensor | Memosens | 120 mm | For water and wastewater treatment
SE715/1-MS
Measuring Range: 0 ... 20 mg/l
Process Connection: PG 13.5
SE680 Digital Toroidal Conductivity Sensor | Clamp 2" | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680N-J2N4U00M
Measuring Range: 0 … 2,000 mS/cm
Process Connection: Clamp 2"
SE554 pH/ORP Sensor | Memosens | 120 mm | Ex | For very high ionic strength media
SE554X/1-AMSN-B1
Measuring Range: 0 … 14 pH, ± 1500 mV
Process Connection: PG 13.5
SE555 pH/ORP Sensor | Memosens | 225 mm | Ex | CIP/SIP capable | Sterilizable | For aggressive media
SE555X/2-AMSN-B1
Measuring Range: 0 … 14 pH, ± 1500 mV
SE655 Toroidal Conductivity Sensor | Memosens | 7 m Fixed cable | PEEK | High chemical resistance
SE655N-GEFTT0AM
Measuring Range: 0 … 2,000 mS/cm
Process Connection: G3/4“ (Union nut A/F36 and FKM (Viton) seal in package contents)
SE655 Toroidal Conductivity Sensor | Fixed cable | PEEK | High chemical resistance
SE655
Measuring Range: 0 … 2,000 mS/cm
Process Connection: G3/4“ (Union nut A/F36 and FKM (Viton) seal in package contents)
SE555 pH Sensor | VP | 225 mm | Ex | Sterilizable | For aggressive media
SE555X/2-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE555 pH Sensor | Memosens | 425 mm | Ex | Sterilizable | For aggressive media
SE555X/4-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
MemoSuite Advanced Sensor Management Tool | Calibration function, diagnostics and database documentation
SW-MS1400-A
SE656 Toroidal Conductivity Sensor | Memosens | Fixed cable | Ex | PFA | Resistant to highly oxidizing media
SE656X -GEFTW0KM
Measuring Range: 0 … 2,000 mS/cm
Process Connection: G3/4“ (Union nut A/F36 and FFKM (Chemraz) seal included in package contents)
SE555 pH Sensor | VP | 120 mm | Ex | Sterilizable | For aggressive media
SE555X/1-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE655 Toroidal Conductivity Sensor | Memosens | 3 m Fixed cable | PEEK | High chemical resistance
SE655N-GEFFT0AM
Measuring Range: 0 … 2,000 mS/cm
Process Connection: G3/4“ (Union nut A/F36 and FKM (Viton) seal in package contents)
SE558 pH Sensor | VP | 225 mm | Ex | For ultrapure water, water and analytical chemistry
SE558X/2-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE656 Toroidal Conductivity Sensor | Fixed cable | PFA | Resistant to highly oxidizing media
SE656
Measuring Range: 0.002 … 2,000 mS/cm
Process Connection: G3/4“ (Union nut A/F36 and FFKM (Chemraz) seal included in package contents)
SE670 Toroidal Conductivity Sensor | Coupling nut G 1 1/2“ | PP | Insensitive to contamination and corrosion
SE670/U1
Measuring Range: 0.02 … 2,000 mS/cm
Process Connection: Coupling nut G1½″
SE625 2-Electrode Conductivity Sensor | Memosens | Measuring range 0 … 1,000 μS/cm
SE625-MS
Measuring Range: 0 … 1,000 µS/cm
Process Connection: NPT 3/4"
SE600 4-Electrode Conductivity Sensor | Fixed cable | For high pressure/high-temperature
SE600
Measuring Range: Approx. 0.5 µS/cm … 600 mS/cm
Process Connection: 1" weld-in socket
SE565 ORP Sensor | Memosens | 120 mm | Ex | For hygienic processes and sterile applications
SE565X/1-NMSN-B1
Measuring Range: ± 1500 mV
Process Connection: PG 13.5
SE707 Oxygen Sensor | Memosens | 220 mm | Ex | Measuring range (resolution) 0 ... 50 mg/l (1 μg/l)
SE707X/2-NMSN
Measuring Range: pO₂ < 1,200 mbar (17.4 psi)
SE555 pH Sensor | VP | 425 mm | Ex | Sterilizable | For aggressive media
SE555X/4-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE615 Conductivity Sensor | 2 Graphite electrodes | Memosens | 225 mm | For water and wastewater treatment
SE615/2-MS
Measuring Range: 10 µS/cm … 20 mS/cm
Process Connection: PG 13.5
SE605H 2-Electrode Conductivity Sensor | Memosens | Ingold socket | Hygienic design
SE605H-NMSH
Measuring Range: 0 … 1,000 µS/cm
Process Connection: Ingold socket
SE554 pH Sensor | Memosens | 325 mm | Ex | For very high ionic strength media
SE554X/3-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE610 2-Electrode Conductivity Sensor | Fixed cable | For measuring low conductivities in water
SE610
Electrode Material: Stainless steel 1.4571
Measuring Range: 0.1 … 1,000 µS/cm
Process Connection: Thread G1/2"
SE555 pH Sensor | Coax (S8) | 225 mm | Ex | Sterilizable | For aggressive media
SE555X/2-NS8N
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE706 Oxygen Sensor | Memosens | 220 mm | Ex | Measuring range (resolution) 0 ... 50 mg/l (6 μg/l)
SE706X/2-NMSN
Measuring Range: pO₂ < 1,200 mbar (17.4 psi)
SE680 Digital Toroidal Conductivity Sensor | Dairy pipe DN 50 | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680N-C1N4U00M
Measuring Range: 0 … 2,000 mS/cm
Process Connection: Dairy pipe N 50
SE557 pH Sensor | Memosens | 120 mm | Ex | Omega glass | For process media requiring high measurement stability
SE557X/1-NMSH-B1
Measuring Range: 0 … 14 pH
SE655 Toroidal Conductivity Sensor | Memosens | 7 m Fixed cable | Ex | PEEK | High chemical resistance
SE655X-GEFTT0AM
Measuring Range: 0 … 2,000 mS/cm
Process Connection: G3/4“ (Union nut A/F36 and FKM (Viton) seal in package contents)
SE680 Digital Toroidal Conductivity Sensor | SMS 2" | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680N-M2N4U00M
Measuring Range: 0 … 2,000 µS/cm, 0 … 2,000 mS/cm
Process Connection: SMS 2"
SE559 pH Sensor | Memosens | 225 mm | Ex | For water and analytical chemistry
SE559X/2-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE707 Oxygen Sensor | Memosens | 320 mm | Ex | Measuring range (resolution) 0 ... 50 mg/l (1 μg/l)
SE707X/3-NMSN
Measuring Range: pO₂ < 1,200 mbar (17.4 psi)
SE680 Digital Toroidal Conductivity Sensor | For ARF 210/215 | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680N-K8N4U00M
Measuring Range: 0 … 2,000 mS/cm
Process Connection: For ARF210/215
SE680 Digital Toroidal Conductivity Sensor | Varivent DN 50 | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680N-V1N4U00M
Measuring Range: 0 … 2,000 mS/cm
Process Connection: Varivent DN 50
SE656 Toroidal Conductivity Sensor | Memosens | Fixed cable | PFA | Resistant to highly oxidizing media
SE656N -GEFTW0KM
Measuring Range: 0 … 2,000 mS/cm
Process Connection: G3/4“ (Union nut A/F36 and FFKM (Chemraz) seal included in package contents)
SE706 Oxygen Sensor | VP | 220 mm | Measuring range (resolution) 0 ... 50 mg/l (6 μg/l)
SE706/2
Measuring Range: pO₂ < 1,200 mbar (17.4 psi)
Process Connection: PG 13.5
SE555 pH Sensor | VP | 325 mm | Ex | Sterilizable | For aggressive media
SE555X/3-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE707 Oxygen Sensor | VP | 120 mm | Measuring range (resolution) 0 ... 50 mg/l (1 μg/l)
SE707/1
Measuring Range: pO₂ < 1,200 mbar (17.4 psi)
SE554 pH Sensor | Memosens | 425 mm | Ex | For very high ionic strength media
SE554X/4-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE655 Toroidal Conductivity Sensor | Fixed cable | Ex | PEEK | High chemical resistance
SE655X
Measuring Range: 0.002 … 2,000 mS/cm, 0 … 2,000 mS/cm
Process Connection: G3/4“ (Union nut A/F36 and FKM (Viton) seal in package contents)
SE660 Electrodeless Conductivity Sensor
SE660/11
Measuring Range: 0 … 2,000 mS/cm
Process Connection: Coupling nut G1½″
SE680 Digital Toroidal Conductivity Sensor | Varivent DN 50 | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680X-V1N4U00M
Measuring Range: 0 … 2,000 µS/cm
Process Connection: Varivent DN 50
SE680 Digital Toroidal Conductivity Sensor | For ARD 75 | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680N-KUN4U00M
Measuring Range: 0 … 2,000 mS/cm
Process Connection: For ARD75
SE620 2-Electrode Conductivity Sensor | VP | Pharma compliant hygienic design
SE620/1
Electrode Material: Stainless steel 1.4435
Measuring Range: 0 … 50 µS/cm
Process Connection: Clamp DN 25
SE656 Toroidal Conductivity Sensor | Fixed cable | Ex | PFA | Resistant to highly oxidizing media
SE656X
Measuring Range: 0.002 … 2,000 mS/cm
Process Connection: G3/4“ (Union nut A/F36 and FFKM (Chemraz) seal included in package contents)
SE547N pH Sensor | Memosens | 120 mm | CIP/SIP capable and autoclavable
SE547N/1-NMSN-A2
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE547N pH Sensor | Memosens | 225 mm | CIP/SIP capable and autoclavable
SE547N/2-NMSN-A2
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE547X pH Sensor | Memosens | 120 mm | Ex | CIP/SIP capable and autoclavable
SE547X/1-NMSN-A2
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE547X pH Sensor | Memosens | 225 mm | Ex | CIP/SIP capable and autoclavable
SE547X/2-NMSN-A2
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE740 Optical Oxygen Sensor | M12 (8 pins) | 325 mm | For demanding hygienic environments
SE740/3
Measuring Range: DO: 4 ppb … 25 ppm, pO₂: 0.1 ... 600 mbar
Process Connection: PG 13.5
SE680 Digital Toroidal Conductivity Sensor | For ARD 75 | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680X-KUN4U00M
Measuring Range: 0 … 2,000 mS/cm
Process Connection: For ARD75
SE680 Digital Toroidal Conductivity Sensor | Dairy pipe DN 50 | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680X-C1N4U00M
Measuring Range: 0 … 2,000 mS/cm
Process Connection: Dairy pipe N 50
SE740 Optical Oxygen Sensor | M12 (8 pins) | 425 mm | For demanding hygienic environments
SE740/4
Measuring Range: DO: 4 ppb … 25 ppm, pO₂: 0.1 ... 600 mbar
Process Connection: PG 13.5
SE565 ORP Sensor | Memosens | 225 mm | Ex | For hygienic processes and sterile applications
SE565X/2-NMSN-B1
Measuring Range: ± 1500 mV
Process Connection: PG 13.5
SE706 Oxygen Sensor | VP | 120 mm | Measuring range (resolution) 0 ... 50 mg/l (6 μg/l)
SE706/1
Measuring Range: pO₂ < 1,200 mbar (17.4 psi)
Process Connection: PG 13.5
SE558 pH Sensor | Memosens | 225 mm | Ex | For ultrapure water, water and analytical chemistry
SE558X/2-NMSN-B1
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE680 Digital Toroidal Conductivity Sensor | Clamp 2" | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680X-J2N4U00M
Measuring Range: 0 … 2,000 mS/cm
Process Connection: Clamp 2"
SE740 Optical Oxygen Sensor | M12 (8 pins) | 215 mm | For demanding hygienic environments
SE740/2
Measuring Range: DO: 4 ppb … 25 ppm, pO₂: 0.1 ... 600 mbar
Process Connection: PG 13.5
SE604 2-Electrode Conductivity Sensor | 7-Pole | Measuring range from 1 nS/cm to 1000 μS/cm
SE604
Electrode Material: Stainless steel 1.4571
Process Connection: Thread G1"
SE554 pH Sensor | VP | 325 mm | Ex | For very high ionic strength media
SE554X/3-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5
SE680 Digital Toroidal Conductivity Sensor | SMS 2" | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680X-M2N4U00M
Measuring Range: 0 … 2,000 mS/cm
Process Connection: SMS 2"
SE680 Digital Toroidal Conductivity Sensor | For ARF 210/215 | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680X-K8N4U00M
Measuring Range: 0 … 2,000 mS/cm
Process Connection: For ARF210/215
SE554 pH Sensor | VP | 425 mm | Ex | For very high ionic strength media
SE554X/4-NVPN
Measuring Range: 0 … 14 pH
Process Connection: PG 13.5