Product Certificate ph and ORP Sensors Sensolyt. ph-sensor Sensolyt SEA ph-sensor Sensolyt GDA ORP-Sensor Sensolyt PtA. Logotronic GmbH Page 1 of 7

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1 ph-sensor Sensolyt SEA ph-sensor Sensolyt GDA ORP-Sensor Sensolyt PtA Logotronic GmbH Page 1 of 7

2 General The ph is one of the most important analysis parameter measured through-out the water, wastewater and many process industries. In the biological treatment of wastewater, for example, the acidic or alkaline condition of the mixed liquor has an essential influence on the activity of the micro-organisms; i.e., continuous on-line ph control is required. Precise and reliable systems for ph monitoring and control are also necessary in drinking water plants and in a variety of industrial process technologies. The reliability of ph and ORP measurements are determined to a large extent by the quality of the ph/orp electrode which commonly is exposed to extreme conditions; particularly in many industrial applications. With its special design the Sensolyt combination electrodes are superior to conventional electrodes in terms of failures and durability. The design of the applied reference system used is crucial to the overall performance of an electrode. In Sensolyt combination electrodes the reference is a conventional Ag/AgCl/Cl electrode system, completely embedded in a pressure resistant solid gel-polymer electrolyte. As concentration changes in gel-type electrolyte occur very slowly, i.e. the electrochemical characteristic of the cell is unchanged, a stable and constant reference potential will be achieved. With this electrode design, the polymer matrix/process fluid interphase consists of a pinhole diaphragm; i.e. an electrical flux is established through two fine holes in the cell of the reference system. Such a diaphragm especially reduces the risk of failures. In addition, Sensolyt combination electrodes require very little maintenance as there is no electrolyte replacement. SensoLyt SEA This pressure and temperature resistant combination ph electrode incorporates a double pin-hole diaphragm and a gel polymer solid electrolyte, which is AgCl free and therefore resistant to sulphides. This ph electrode is specially designed for use in moderately to highly polluted municipal and industrial wastewater. Applications: Highly contaminated sewage Emulsions and suspensions Media containing proteins and sulphides Logotronic GmbH Page 2 of 7

3 Measuring range: ph For operation under pressure up to 6 bar (60m depth in water) SensoLyt GDA The GDA version, employing a modified gel electrolyte and a ceramic diaphragm, is a low cost electrode for ph measurements. It is thermally stable and most often used in lightly polluted process media. Applications: Low-rate wastewater Surface waters Drinking water treatment Process fluids containing proteins Measuring range: ph For "pressure less" operation. Pressure up to 0.5 bar (1/2 m depth in water). SensoLyt PtA Similar to the Sensolyt SEA regarding its design features and electrochemical characteristics, the Sensolyt PtA is an combination ORP (Redox) electrode. It is also fitted with a pinhole diaphragm, and is primarily recommended for applications in heavily contaminated wastewater. Applications: Municipal and industrial sewage Emulsions and suspensions Media containing proteins and sulphides Measuring range:±1000 mv Technical specifications Sensolyt SEA - Electrode type: Gel-polymer solid electrolyte, double pinhole diaphragm - Measuring range: 2 ph to 12 ph - Max. Pressure: 6 bar Sensolyt GDA - Electrode type: Modified gel electrolyte ceramic diaphragm - Measuring range: 2 ph to 14 ph - Max. pressure: 0.5 bar Logotronic GmbH Page 3 of 7

4 Sensolyt PtA - Electrode type: Gel-polymer solid electrolyte, pinhole diaphragm - Measuring range: ±1000 mv - Max. Pressure: 6 bar Interface/outputs Water tight plug system Special sensor cable necessary (Coax cable with high impedance) Power supply Power supply from Gealog Measuring Interface Environmental/Mechanical Data Operating temperature range: 0 C to 60 C Dimensions: - Shaft length x diameter: L x D = 160mm x 24mm (without plug head) Protection mode: IP 68 Weight (without cable): 60g Buffer Solutions ph Sensors as well as ORB-sensors need regularly recalibration. For that purpose we recommend the following buffer solutions. Technical buffers for ph - ph 4.01, ph 7, ph Available in vessels of 1 l and 250 ml. Technical buffer for ORP - ph 7, U H = 427 mv - Available in vessel 250 ml. Logotronic GmbH Page 4 of 7

5 Origin Country of origin: European Community Production quality standard Production according to ISO9001 Logotronic GmbH Page 5 of 7

6 Ordering Information ph-sensor Sensolyt SEA o For use in heavy polluted water o Gel-polymer-elektrolyt o Measuring range 2-12 ph o Operating temperature: 0 C to 60 C o Max. operating pressure: 6 bar ph-sensor Sensolyt GDA o For use in low polluted water o Gel-polymer-electrolyte o Measuring range 0-14 ph o Operating temperature: 0 C to 60 C o Max. operating pressure: 0.5 bar ORP-Sensor Sensolyt PtA o Gel-polymer-electrolyte o Measuring range: ± 1000 mv o Operating temperature: 0 C to 60 C Accessories Connector for Sensor Cable for ph-/orp Electrodes o High quality connector for ph-coax cable o Pair of connectors on the datalogger s side Sensor Cable for ph/orp Electrodes 1 m o Coax cable for ph and ORP sensors o Incl. Coax-connector for the sensor o Cable length 1 m Sensor Cable for ph/orp Electrodes 5 m o Coax cable for ph and ORP sensors o Incl. Coax-connector for the sensor o Cable length 5 m Sensor Cable for ph/orp Electrodes 10 m o Coax cable for ph and ORP sensors o Incl. Coax-connector for the sensor o Cable length 10 m Also other cable lengths available on special requirements Buffer Solution ORP o Buffer for the calibration of the Sensolyt PtA sensor o Redox value: 427 mv Logotronic GmbH Page 6 of 7

7 Buffer Solution TEP 4 o ph 4.01 o 1 litre bottle Buffer Solution TEP 7 o ph 7.0 o 1 litre bottle Buffer Solution TEP 10 o ph 10.0 o 1 litre bottle Buffer Solution TPL 4 o ph 4.01 Buffer Solution TPL 7 o ph 7.0 Buffer Solution TPL 10 o ph 10.0 Revision List No. Revision Date Name Description of Changes Pe New release Document: Certificate_pH_ORP_Sensors_Sensolyt.doc Logotronic GmbH Page 7 of 7