CPF201 EH

Document overview

  • Manufacturer or author: Provided By www.digicamel.com(free datasheet download site)
  • PDF pages: 8

Technical content

TI 366C/07/en/06.03 51512476 Compact pH Electrode PuriSys CPF 201 Compact electrode for pH measurement in pure and ultrapure water Application

  • Boiler feed water
  • Power plant applications
  • Pharmaceutical water for injection (WFI) Your benefits
  • 316 SS low flow assembly: – stable pH reading – elimination of flow dependency errors
  • Simple, maintenance-free replacement electrode
  • Temperature compensation
  • TOP 68 quick disconnect, water tight connector
  • Patented porous PTFE reference junction
  • Easy installation

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Function and system design Measuring principle pH measurement The pH value is used as a unit of measurement for the acidity or alkalinity of a liquid medium. The membrane glass of the electrode supplies an electrochemical potential which is dependent upon the pH value of the medium. This potential is generated by the selective penetration of H+ ions through the outer layer of the membrane. An electrochemical boundary layer with an electric potential forms at this point. An integrated Ag/AgCl reference system serves as reference electrode. The transmitter converts the measured voltage into the corresponding pH value using the Nernst equation. Important properties PuriSys CPF 201

  • Reference system The CPF 201 electrode has a porous Teflon reference junction in a double reference chamber for long life in all high purity water applications.
  • Temperature compensation In addition, a Pt 100 or Pt 1000 temperature sensor is embedded in the pH glass bulb stem for quick temperature response.
  • Easy connection The electrode is connected via the water-proof plug-in system TOP 68.
  • Flow assembly The flow cell has been designed to dissipate static electrical charges inherent in flowing water with low conductivity. The flow assembly design minimizes trapped particles and contaminants. Measuring system The complete measuring system comprises:
  • PuriSys CPF 201 electrode with stainless steel body
  • PuriSys CPF 201 stainless steel flow assembly with compression fitting on inlet and outlet
  • CPK 9 measuring cable (not included in scope of delivery)
  • Transmitter, e.g. Liquisys M CPM 223, Mycom S CPM 153 (not included in scope of delivery) C07-CPF201xx-14-05-00-xx-001.eps /c31 /c105/c62/c195/c213/c192 /c136 /c152/c125 /c202 /c195/c222/c195 /c204/c105/c147 /c202/c105/c221 /c62/c147/c171 /c143/c105 /c163 /c34 /c213/c204 /c143/c105/c204 /c211 /c42 /c54 /c10/c202/c147 /c156/c213/c152/c204 /c136 /c152/c125 /c202 /c171/c143/c62/c204 /c105/c202/c118 /c156/c192/c202 /c105/c143 /c105 /c86/c204/c192/c136/c86/c62/c143/c202/c136/c195 /c156/c143 /c62/c204 /c136/c156/c152 /c206 /c42 /c213/c192/c136/c45 /c222/c195/c202 /c10/c42 /c19/c202/c211/c228/c163 /c202/c118 /c143 /c156/c220 /c202/c62/c195/c195 /c105/c147/c76 /c143/c222 /c123 /c22/c152/c143/c105/c204 /c120 /c10/c42 /c28 /c202/c153/c202 /c147/c105/c62/c195 /c213/c192/c136/c152/c125/c202 /c86/c62/c76 /c143/c105 /c200 /c42 /c213/c192/c136/c45 /c222/c195/c202 /c10/c42 /c19/c202/c211/c228/c163 /c202/c105/c143/c105/c86/c204 /c192/c156/c96/c105 /c199 /c29/c136/c181 /c213/c136/c195/c222/c195 /c202/c31 /c202/c10/c42 /c31 /c202/c211/c211/c206/c202 /c204/c192 /c62/c152/c195/c147/c136/c204 /c204/c105/c192 6 7 013 0 pH ENDRESS+HAUSER LIQUISYS M CAL REL REL 1 REL 1 ALARM REL 2 REL 2E Setpoint R232

Response time t90 <1 0 s Cable specifications The CPF 201 electrode is connected to the measuring transmitter using the CPK 9 measuring cable (version without potential matching line). C07-CPK9xxx-03-11-00-en-002.eps /c10/c42 /c28/c202 /c153/c202/c147 /c105/c62/c195/c213/c192/c136/c152/c125 /c202/c86 /c62/c76/c143/c105 Wiring of CPK 9 to transmitter pH value 0 ... 14 pH Coax BK Coax WH GN WH YE Plug Shield connection Cable Transmitter CPK 9 Liquisys M CPM 223 / 253 Mycom S CPM 153 Pin Function Terminal Function Terminal Function Coax BK Reference Ref Reference Ref Reference Coax WH pH pH pH pH pH GN Temp. (Pt 100) 11 TC 11 TC WH Temp. (Pt 100) 12 TC common 13 TC common YE Temp. (Pt 100) 13 TC 12 TC Shield EMC protection S Shield Shield connection / Pg thread Shield

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Calibration When installing a new CPF 201 electrode, perform a two-point calibration using pH 4 and 7 buffer solutions to establish that the electrode and the transmitter are functional together. To do so, refer to the operating instructions of the transmitter. Rinse the electrode thoroughly with ultra-pure water to remove all traces of the buffer solutions prior to inserting the electrode into the flow assembly. Since the pH variation in ultra-pure water is very small, routine one-point calibration of the CPF 201 electrode is performed by comparative sample measurement according to the ASTM test method. When performing sample measurements take note of the following:

  • The sample chamber and the sample line must avoid exposure of the ultra-pure water to the atmosphere. – Ultra-pure water is highly unbuffered and the slightest amount of contamination can change the pH value significantly. Specifically, ultra-pure water rapidly absorbs CO2 gas from the atmosphere which lowers the pH value of the sample. – The sample may contain volatile substances that will rapidly dissipate when exposed to the atmosphere.
  • The sample to be measured should be at the same temperature as the medium stream because ultra-pure water has a significant temperature coefficient.
  • To obtain repeatable measurement results, the flow rate of the sample chamber must be stabilised. Also, the pressure must be stable. Installation instructions The electrode is threaded into the flow assembly and hand-tightened. When mounting the flow assembly, make sure that the inlet and outlet ports are vertical with the inlet on the bottom. In this fashion, the electrode mounting hole will be at the top right. This will ensure that bubbles in the water stream will not collect and interfere with the measurements. The supplied PVC mounting plate for electrical isolation ensures a noiseless pH reading. To mount the PVC mounting plate on posts or pipes, use the mounting brackets included in the package. C07-CPF201xx-11-05-00-xx-001.eps /c22/c152/c195/c204 /c62/c143/c143 /c62/c204 /c136/c156/c152/c202/c136/c152/c202 /c204/c133/c105/c202 /c118/c143/c156/c220/c202 /c86/c105/c143/c143 /c163 /c211 /c206 /c42 /c54/c10 /c202/c147 /c156/c213/c152/c204/c136/c152/c125 /c202/c171 /c143/c62/c204/c105 /c10/c42 /c19/c202/c211/c228/c163 /c202/c105/c143/c105/c86/c204 /c192/c156/c96/c105 /c31/c156 /c213/c152/c204/c136/c152/c125 /c202/c133/c156/c143/c105/c195/c202 /c173/c76 /c192/c62/c86/c142 /c105/c204/c195/c202 /c118/c156 /c192/c202/c171 /c156/c195/c204 /c202/c147 /c156/c213/c152/c204 /c136 /c152/c125 /c202 /c136/c152/c86/c143/c213/c96/c105/c96 /c202 /c136/c152/c202/c195/c86/c156/c171 /c105/c202 /c156/c118/c202 /c96 /c105/c143 /c136/c219 /c105/c192/c222/c174 /c123 /c120 /c200 /c22/c152/c143/c105/c204 /c202/c171 /c156/c192/c204 /c19/c143/c156/c220/c202/c62/c195 /c195/c105/c147 /c76/c143/c222 /c34 /c213/c204/c143/c105/c204 /c202/c171 /c156/c192/c204 5 2

Ingress protection IP 68 (1m / 3.28 ft water column, 50 °C / 122 °F, 168 h) / NEMA 6 (TOP 68 plug-in system) Process Process temperature max. 75 °C / 167 °F Process pressure max. 3.45 bar / 50 psi Medium conductivity < 100 µS/cm Drift < 0.02 pH/week at 0.5 µS/cm at 25 °C / 77 °F Flow rate 50 ... 250 ml/min Optimum: 150 ml/min The flow rate must be stable to obtain accurate measurement results. Mechanical construction Design, dimensions C07-CPF201xx-16-05-00-xx-002.eps /c10/c42 /c19/c202/c211/c228/c163/c202 /c105/c143/c105/c86/c204/c192 /c156/c96/c105/c202 /c96 /c105/c195/c136/c125/c152 /c163 /c47/c34 /c42/c202 /c200/c110/c202 /c86/c156/c152/c152/c105/c86/c204/c156/c192 /c211 /c45 /c204/c62/c136/c152/c143/c105/c195/c195/c202 /c195/c204 /c105/c105/c143/c202/c76 /c156/c96 /c222 /c206 /c34 /c135/c192/c136/c152/c125 /c123 /c47/c105/c118/c143/c156/c152/c202 /c192/c105/c118 /c105/c192/c105/c152/c86/c105/c202 /c141 /c213/c152/c86 /c204/c136/c156/c152/c202/c62 /c152/c96/c202 /c171 /c21/c202/c125 /c143/c62/c195/c195/c202 /c76 /c213/c143 /c76 /c202 C07-CPF201xx-16-05-00-xx-001.eps /c10/c42 /c19/c202/c211/c228/c163/c202 /c156/c152/c135/c143/c136/c152/c105/c202/c213 /c152/c136 /c204 /c202/c96 /c105/c195/c136/c125 /c152 /c163 /c42 /c54/c10/c202 /c147/c156 /c213/c152/c204/c136/c152/c125 /c202/c171 /c143/c62/c204/c105 /c211 /c10/c42 /c28/c202 /c153/c202/c147 /c105/c62/c195/c213/c192/c136/c152/c125 /c202 /c86/c62/c76/c143/c105 /c206 /c10/c42 /c19/c202/c211/c228/c163/c202 /c105/c143/c105/c86/c204/c192 /c156/c96/c105 /c123 /c22/c152/c143/c105/c204 /c202/c171 /c156/c192/c204 /c120 /c19/c143/c156/c220/c202/c86/c105 /c143 /c143 /c200 /c34 /c213/c204/c143/c105/c204 /c202/c171 /c156/c192/c204

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Process connection OD 6 mm stainless steel compression fitting ¼" stainless steel compression fitting Temperature sensor Pt 100 RTD, Pt 1000 RTD Cable connection TOP 68 plug-in system Certificates and approvals Test report Design according to ASTM standard D 5128, "Standard Test Method for On-Line pH Measurement of Water of Low Conductivity" C07-CPF201xx-06-05-00-en-002.eps /c10 /c42/c19/c202 /c211/c228/c163/c202/c105 /c143 /c105/c86/c204 /c192/c156/c96 /c105/c202/c96 /c136/c147/c105/c152 /c195/c136/c156/c152/c195 C07-CPF201xx-06-05-00-en-001.eps /c10 /c42/c19/c202 /c211/c228/c163/c202 /c156/c152/c135/c143/c136 /c152/c105/c202 /c213/c152/c136/c204/c202 /c96 /c136 /c147 /c105/c152/c195/c136/c156/c152/c195 27.2/ 1.07 171 / 6.73 mm/inch17.5 / 0.69 73.7 / 2.9 mm / inch 241.3 / 9.5 Electrode: approx. 213 g Complete on-line unit incl. mounting brackets: approx. 2275 g Electrode shaft stainless steel SS 316, Viton ® Reference junction Teflon ® Glass bulb pH membrane glass Reference system KCl/AgCl Flow assembly stainless steel SS 316, Viton ® Inlet / outlet ports stainless steel SS 316

Ordering information

Scope of delivery The scope of delivery includes:

  • 1 CPF 201 electrode
  • 1 flow assembly
  • 1 PVC mounting plate incl. mounting brackets
  • Technical Information TI 366C/07/en Accessories Measuring cable ❑Measuring cable CPK 9 (version without PM) for electrodes with TOP 68 plug-in head ordering by product structure, see Technical Information TI 118C/07/en Buffer solutions Technical buffer solutions, accuracy 0.02 pH, acc. to NIST/DIN ❑pH 4.0 red, 100 ml (0.026 US gal.), order no. CPY 2-0 ❑pH 4.0 red, 1000 ml (0.264 US gal.), order no. CPY 2-1 ❑pH 7.0 green, 100 ml (0.026 US gal.), order no. CPY 2-2 ❑pH 7.0 green, 1000 ml (0.264 US gal.), order no. CPY 2-3 Technical buffer solutions for single use, accuracy 0.02 pH, acc. to NIST/DIN ❑pH 4.0 20 x 20 ml (0.005 US gal.), order no. CPY 2-D ❑pH 7.0 20 x 20 ml (0.005 US gal.), order no. CPY 2-E O-rings ❑O-ring set for electrode, TOP 68 plug and flow assembly lid; order no. 51512789 Flow assembly lid ❑Flow assembly lid including seal and screws; order no. 51512795 Compression fittings ❑Compression fitting ¼"; order no. 51512793 ❑Compression fitting OD 6 mm; order no. 51512792 Mounting plate ❑PVC mounting plate incl. screws and mounting brackets; order no. 51512788 Process adaption A Compression fitting, OD 6 mm, 316L B Compression fitting, ¼", 316L C Replacement electrode Electrode type / temperature compensation

1 Integrated Pt 100

2 Integrated Pt 1000

A TOP 68, no cable CPF 201- complete order code

Transmitter ❑Liquisys M CPM 223/253, Technical Information TI 194C/07/en; order no. 51500277 ❑Mycom S CPM 153, Technical Information TI 233C/07/en; oder no. 51503788 Measuring cable ❑CPK 1-12, Technical Information TI 118C/07/en; order no. 50068526 Endress+Hauser GmbH+Co. KG Instruments International P.O. Box 2222 D-79574 Weil am Rhein Germany Tel. (07621) 975-02 Tx 773926 Fax (07621) 975 345 e-mail: info@ii.endress.com Internet: http://www.endress.com 11.01 TI 366C/07/en/06.03 51512476 Printed in Germany / FM+SGML 6.0 / DT