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TI283C/07/en/04.06
51506685

Technical Information

Tophit CPS471 and CPS471D

Sterilizable and autoclavable ISFET sensor for the pH measurement 
Analog or digital sensors with Memosens technology

1

Standard Number 74-02

R

0

Application

• Hygienic and sterile applications
• Food industry and pharmaceutical industry
• Biotechnology

With ATEX, FM and CSA approval for application in hazardous 
areas

Your benefits

• Resistant to breaking

– Sensor body made completely of PEEK
– Direct installation into the process, reduces effort and costs 

for sampling and laboratory analysis

• Certified biocompatibility
• Double-chamber reference system:

– poisoning resistant
– polyacrylamide free gel

• Application possible at low temperatures

– Short response time
– Constantly high accuracy

• Sterilisable and autoclavable
• Longer calibration intervals than glass electrodes

– Lower hysteresis with alternating temperatures
– Low measuring error after high-temperature loading
– Almost no acid and alkaline errors

• With built-in temperature sensor for effective temperature 

compensation

• Ideal for CIP processes when combined with an automatic 

retractable assembly

Further benefits offered by Memosens technology

• Maximum process safety through contactless inductive signal 

transmission

• Data safety through digital data transmission
• Easy handling due to storage of sensor-specific data
• Predictive maintenance possible thanks to registration of 

sensor load data

Summary of Contents for Tophit CPS471

Page 1: ...ference system poisoning resistant polyacrylamide free gel Application possible at low temperatures Short response time Constantly high accuracy Sterilisable and autoclavable Longer calibration interv...

Page 2: ...table sensor circuits use the dependence on the ion selective gate potential to create an output signal proportional to the concentration of the ion type pH selective IsFET The gate isolator serves as...

Page 3: ...lues 0 09 and 13 86 a0003867 en Fig 3 Comparison of acid and alkaline errors Measurement stability and sensor response time The ISFET response times are very short over the whole temperature range Wit...

Page 4: ...H value can be worked out from this equation isothermic curve potential change per pH value at a defined temperature The isothermic curves of the ISFET sensor are very close to the theoretical values...

Page 5: ...mitter and used to calculate the current measured value Storing the calibration data in the sensor allows for calibration and adjustment away from the measuring point The result Sensors can be calibra...

Page 6: ...sembly e g Cleanfit P CPA471 CPA450 with digital sensor only There are additional accessories available depending on the application Topclean S CPC30 or Topcal S CPC310 automatic cleaning system Exten...

Page 7: ...tomatic measurement cleaning and calibration system CIP cleaning The sensor built into the retractable assembly is automatically moved out of the medium before cleaning In the rinse chamber of the ret...

Page 8: ...mmersion assembly Dipfit W CPA111 3 Special measuring cable CPK12 or CYK10 4 Transmitter Liquiline Pharmaceuticals and biotechnology a0003877 Fig 8 Measuring system for pharmaceutical and biotechnolog...

Page 9: ...ote The cable cors Yellow and White are connected on the sensor side Make sure you comply with the instructions for connecting the sensor wiring diagram in the Operating Instructions of the transmitte...

Page 10: ...s Longer dry storage of the sensor up to 30 minutes Installation Installation angle ISFET sensors can be installed in any position as there is no liquid internal lead However in case of an overhead in...

Page 11: ...he rotable plug in head When installing the sensor in an assembly use the engraved serial number on the connection head for correct sensor orientation The serial number is always located in the same p...

Page 12: ...alibration and operation Normal environment light does not influence the measurement Process Medium temperature depending on pH At high temperatures over a long period of time alkalis irreversibly des...

Page 13: ...en Fig 14 Pressure and temperature Caution Danger of damage to the sensor Never use the Tophit for applications outside the given specifications Recommended cleaning Depending on the degree of polluti...

Page 14: ...acc to DIN IEC 751 Plug in head CPS471 ESB TOP68 rotatable CPS471D Memosens rotatable Diaphragm Ceramics sterilizable a0003903 Fig 15 Tophit CPS471 depending on the sensor version a0003904 Fig 16 Sens...

Page 15: ...l EPDM Application range pH 0 to 14 15 to 135 C 5 to 275 F For Ex and Non Ex applications Product structure CPS471 Product structure CPS471D Shaft length 2 120 mm 4 72 in 4 225 mm 8 86 in 5 360 mm 14...

Page 16: ...obtained are representative of the ISFET Sensor TopHit type CPS 471 and type CPS 441 Materials in contact with medium are FDA certified Certified acc to the 3 A standard no 74 02 Accessories Transmit...

Page 17: ...iable process termination parts in contact with medium of PP PEEK or PVDF Technical Information TI345C 07 en Cleanfit H CPA475 Retractable assembly for tank and pipe installation under sterile conditi...

Page 18: ...sheath max 130 C 266 F HC Cable length 15 m 49 23 ft TPE sheath max 130 C 266 F HD Cable length 20 m 65 64 ft TPE sheath max 130 C 266 F HF Cable length 5 to 20 m 16 41 to 65 64 ft TPE sheath max 130...

Page 19: ...of e g Memosens CUS31 CUS41 2 wires twisted pair with shield and PVC sheath 2 x 2 x 0 5 mm2 shield Sold by the meter order no 51502543 Junction boxes Junction box VBA With 10 high impedance terminals...

Page 20: ...TI283C 07 en 04 06 51506685 Printed in Germany FM SGML 6 0 DT...

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