Contactless. Digital. MEMOSENS. The Industry Standard for Sensors

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1 Contactless. Digital. MEMOSENS. The Industry Standard for Sensors Inductive connection for contactless energy and data transmission The inductive connector system offers contactless energy and data transmission between electrochemical sensors and process analyzers. The built-in intelligence allows sensor-related data close to the process to be saved and evaluated. In late 2008, the two companies Endress + Hauser and Knick agreed to work closely together in the development of and general cooperation on contactless and digital sensor technology. The result of this cooperation is (logo). A new generation with a greatly expanded range of functions is currently in the final stage of development. The new generation will display significantly enhanced predictive diagnostics, record sensor history, and reliably measure glass and reference impedances. Together with all common fieldbuses, can be used with all process control and asset management systems. In addition to digital ph measurement, technology is available for ORP, conductivity and oxygen parameters. As an open standard, is supported by many other manufacturers. Advantages of at a Glance up to 40 % longer lifetime of sensors reduction in process downtimes with simple sensor replacement fewer calibration cycles thanks to longer sensor life more precise process management with exact calibration in the laboratory under reproducible conditions predictive maintenance as an integrated element of the sensor technology improved asset management Intelligent ph Sensors With analog ph measuring points, humidity can cause faults and thus failure of the measuring point. Problems like these are effectively rectified by the contactless, inductive data transfer of technology. In outdoor areas, impurities in the plug connector present no measurement problems with digital ph sensors. Stresses on the ph sensor are logged and can be used for preventive maintenance. sensors can be precalibrated in the lab under optimal conditions and then only need to be replaced on site. As a result, there is no need for calibration in dirty or dangerous conditions and measuring points which are difficult to access no longer present a problem. 20

2 New from Knick Isolation Amplifiers Transmitters Indicators Process Analytics Portable Meters Laboratory Meters Sensors Fittings Contacting Conductivity Sensors technology is also used for contacting conductivity sensors. The contactless and digital data transfer reduces the influence of cable capacitance, cable resistance, or contacts susceptible to corrosion. In addition, the fully galvanic decoupling of analyzer and sensor element simplifies wiring. Here, the corresponding transmitters in the Stratos Pro series or the Protos measuring systems complete the conductivity measuring point. Of course, the relevant measurement and process data, such as minimum and maximum conductivity value and the number of cleaning and sterilization cycles, are also stored in conductivity sensors with technology. Oxygen Measurement Using oxygen sensors, the measured value is also digitized directly in the sensor and can be transmitted as an interference-free digital signal to the analyzer and processed further there. When a sensor is replaced, the last sensorspecific data are loaded onto the analyzer and operation promptly continues. The oxygen sensors can also be calibrated locally in the laboratory or workshop and then commissioned at short notice at the relevant installation point without further work. In addition to standard data such as sensor ID, various operating data are recorded and made available for asset management (number of calibrations, operating hours taking account of the different process conditions, SIP cycles, and electrolyte stress). Patented Connector System The contactless system is characterized by a patented quick connector that enables easy opening/ closing without twisting the cable. 21

3 Contactless. Digital. MEMOSENS. Contactless Energy and Data Transfer The key element of the system is the signal processing carried out in the sensor cap using inductive, contactless data transfer and power supply. Sensor ph/orp Sensor tem perature µcontroller/ ADC/ memory Power receiver and data modulator/ demodulator Coupling element (inductive) Coupling element (inductive) Power transmitter and data modulator/ demodulator µcontroller/ memory Modem (RS 485) Primary electric supply Data Energy Field Elimination of Measurement Problems technology allows reliable measurement completely insensitive to ambient conditions such as humidity corrosion salt bridges poor contacts poor galvanic isolation cables that are unsuitable or too long The system can even be connected under water. The connector is metalfree. Perfect galvanic isolation enables disturbance-free data transfer, unaffected by ground potential. Connection of a solution ground or equipotential bonding (EB) is not required. 22

4 New from Knick Isolation Amplifiers Transmitters Indicators Process Analytics Portable Meters Laboratory Meters Sensors Fittings Time is Money Varying Workflows in the Use of Conventional and Sensors The following comparison illustrates the differences in workflow following an error message. The considerably less time required for maintaining the digital sensors on site reduces process downtimes. Together with the other benefits, such as the longer sensor lives, this results in quick amortization of the investment. Workflow with use of conventional sensors Workflow with use of sensors Error message/ Maintenance request Take along cleaning solution Take along buffer solution 1 Take along new sensor Error message/ Maintenance request Take along new sensor, = Maintenance requirement, = Maintenance requirement On Site: Replacement Cleaning Regeneration Calibration 1.) Register at control center 2.) Remove sensor 3.) Clean/calibrate or replace sensor 4.) Calibrate sensor with buffer 1 5.) Calibrate sensor with buffer 2 6.) Reinstall the sensor 7.) Enable measuring point 8.) Keep records On-site calibration mandatory On Site: Replacement 1.) Register at control center 2.) Remove sensor 3.) Reinstall the sensor 4.) Enable measuring point In the lab: Cleaning Regeneration Calibration Automatic record 23

5 Contactless. Digital. MEMOSENS. Overview of Knick Memosens Sensors ph/orp, SE 532 For standard ap plications with gel electrolyte and temperature detec tor, sterilizable, autoclavable and CIP compliant. Uni versal, lowmaintenance sensor for chemistry applications., SE 533 For high pressure and heavily polluted media with solid polymer electrolyte, solution ground, and temperature detector. Reliable sensor for challenging chemical processes., SE 551 Refillable liquid electrolyte sensor with long service life for special requirements and high-precision measurements. Elimination of typical junction problems., SE 552 Low-maintenance and precise ph sensor with in tegrated temper a- ture detector. CIP capable, steam sterilizable and autoclavable. For an extensive range of applications at moderate pressures., SE 554 Low-maintenance sensor for demand ing process application in the chemical industry. High accuracy, stability, rapidness and a long life cycle are achieved by the special design., SE 555 Steam-sterilizable sensor providing high reliability and precision; enables a very fast and stable response and makes the sensor CIP- and SIP-capable, even in the harshest of environments., SE 559 For uncomplicated measurement in ultrapure water, water, and an a lyt i- cal chemistry. The calibrated annular junction enables precise measurements in media of very low conductivity virtually without influence of flow. Specifications : C (135 C for sterilization) Pressure: 1 to 6 bars Highly alkali-resistant glass Ag/AgCl with silver ion trap, gel electrolyte, acrylamide-free Ceramic (1 x) pro tec tion: : C (reduced service life above 110 C) Pressure: 16 bars (25 C), 8 bars (130 C) Highly alkali-resistant glass Ag/AgCl, solid polymer, incl. KCl, acrylamidefree open hole junction (2 x) : C Pressure: 1 to 6 bars : C (135 C for sterilization) : C Pressure: Pressure: up to 4 bars up to 10 bars Highly alkali-resistant glass Ag/AgCl with silver ion trap, gel electrolyte, acrylamide-free Electrolyte: Friscolyt-B ZU 0591 Ceramic (2 x) Highly alkali-resistant glass Ag/AgCl, prepressurized liquid electrolyte with silver ion trap Ceramic (1 x) Low-impedance standard ph glass, fast response Ag/AgCl, polymeric electrolyte Hole (2 x) : : C C Pressure: 1 to 10 bars Pressure: NTC 30 up to 10 bars kohms Special ph glass for high temperatures (SIP) and high ph values Ag/AgCl, prepressurized liquid electrolyte with silver ion trap Ceramic (1 x) Certificates: Cytotoxicity certificate Low-impedance standard ph glass, fast response Ag/AgCl, polymeric electrolyte Calibrated annular junction 24

6 New from Knick Isolation Amplifiers Transmitters Indicators Process Analytics Portable Meters Laboratory Meters Sensors Fittings Conductivity Oxygen, SE 546 Break-resistant and glass-free ph sensor using ISFET technology. Broad range of ap pli cations; outstanding features for hy gien ic and sterile applications, food and pharmaceutical industry, bio technol ogy C (hazardous areas), 135 C (safe areas) Pressure: 0 to 10 bars ISFET (ion-sensitive field-effect transistor) Ag/AgCl, gel electrolyte Hygienic design: EHEDG-validated Process-wetted material: PEEK, EPDM, FDA-conforming Ceramic (1 x), SE 604 Robust 2-electrode sensor. For precise and reliable measurement of low and very low conductivities, par tic u- larly in ultrapure water down to 200 μs/cm. Coaxial stainlesssteel electrodes. Specifications Cell constant: 0.029/cm µs/cm Material: Cell and electrodes: stainless steel; Insulator: PVDF Gaskets: FKM (Viton) Medium: C; Environment: C Pressure: max. 25 bars ( 20 to 70 C); max. 10 bars (120 C) Process adaptation: G 1;, SE 605H Robust 2-electrode sensor. For precise and reliable measurement over a broad range of low and very low conductivities in hygienic ap pli cations, particularly in ultrapure water down to 200 μs/cm with only one sensor model. Cell constant: 0.029/cm µs/cm Material: Cell and electrodes: stainless steel; Insulator: PEEK Medium: C; Environment: C Pressure: max. 25 bars ( C); max. 10 bars (135 C) Process adaptation: See product line (p. 94), SE 630 Low-maintenance and precise 2-electrode sensor with integrated tem perature detector. CIP capable, steam sterilizable and autoclavable. For an extensive range of applications at moderate pressures. Cell constant: 1/cm 10 µs/cm 20 ms/cm Material: Body: PES; electrodes: Special graphite probe Titanium : Max. 135 C Pressure: Max. 16 bars (20 C) Process connection: G 1;, SE 706 Digital oxygen sensor in robust and hygienic stainless steel design. High accuracy and low detection limit. Simple and fast maintenance due to special membrane. Specifications po2 < 1200 mbars Detection limit: 6 ppb Signal in ambient air: na Residual signal in O 2 -free medium: 0.1 % of signal in ambient air Dependency on flow: 5 % Permissible pressure range: (12) bars absolute 0 80 C ( C steam sterilizable/autoclavable) Certificates: EHEDG, 3A, 3.1 (EN 10204), SE 707 Reliable meas urement of oxygen traces also under sterile and hygienic conditions; signalstable and robust. Simple and costefficient sensor calibration in ambient air. po2 < 1200 mbars Detection limit: 1 ppb Signal in ambient air: na Residual signal in O 2 -free medium: 0.1 % of signal in ambient air Dependency on flow: 5 % Permissible pressure range: (12) bars absolute 0 80 C ( C steam sterilizable/autoclavable) Certificates: EHEDG, 3A, 3.1 (EN 10204) 25

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