Endress+Hauser CPS12D Specifications

Technical Information

Orbisint CPS12/CPS12D/CPS13

ORP electrodes, analog and digital with Memosens technology and
reference electrode
Each with dirt-repellent PTFE diaphragm for standard applications in
process and environmental technology

Application

• Long-term monitoring and limit monitoring of processes with
stable process conditions
– Paper industry
– Plastics chemistry
– Power plants (e.g. flue gas washers)
– Incineration plants
– Food industry
– Breweries

• Water treatment
– Drinking water
– Cooling water
– Well water

With ATEX, FM1 and CSA1 approval

0

for application in hazardous areas

Your benefits

• Robust electrode requiring low maintenance thanks to large
PTFE ring diaphragm

• Application under pressures of up to 16 bar (232 psi)

• Long service life due to double junction system of metal lead
and thus long electrode poison diffusion path

• Various measuring elements for application in oxidising and
reducing media

• Three lengths: 120, 225 and 360 mm (4.72, 8.86,

14.17 inches)

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

1

approval for digital sensors pending

TI367C/07/en/05.05
51513586

Function and system design

Measuring principle Redox measurement

The redox potential is a unit of measurement for the state of equilibria between oxidising and reducing
components of a medium. Redox potential is measured similarly to the pH value. A platinum or gold electrode
is used instead of pH-sensitive membrane glass. Analog to the pH measurement, an integrated Ag/AgCl
reference system is used as a reference electrode.

General properties • Low maintenance

The dirt-repellent, sterilisable PTFE ring diaphragm of the CPS12 prevents blocking and assures long-time
stability and accuracy.

• Long service life

The double junction system of the metal lead offers better protection from electrode poisons and guarantees
a considerably longer service life.

• Durability

Depending on the ordered version, the electrode is pressure proof up to 16 bar / 232 psi and can be applied
at temperatures of up to 135 °C / 275 °F.

Important properties CPS12D Maximum process safety

The inductive and non-contacting measured value transmission of Memosens guarantees maximum process
safety and offers the following benefits:

• All problems caused by moisture are eliminated.
– The plug-in connection is free from corrosion.
– Measured value distortion from moisture is not possible.
– The plug-in system can even be connected under water.

• The transmitter is galvanically decoupled from the medium. The result: No more need to ask about
"symmetrically high-impedance" or "unsymmetrical" or an impedance converter.

• EMC safety is guaranteed by screening measures for the digital measured value transmission.

Data safety through digital data transfer

The Memosens technology digitalizes the measured value in the sensor and transfers it to the transmitter via a
contactless connection. The result:

• An automatic error message is generated if the sensor fails or the connection between sensor and transmitter
is interrupted.

• The availability of the measuring point is dramatically increased by immediate error detection.

• The digital signals are suitable for application in hazardous areas; the integrated electronics are intrinsically
safe.

Easy handling

Sensors with Memosens technology have integrated electronics that allow for saving calibration data and
further information such as total hours of operation and operating hours at very high temperatures. When the
sensor is mounted, the calibration data are automatically transferred to the transmitter and used to calculate
the current redox potential. Storing the calibration data in the sensor allows for calibration and adjustment
away from the measuring point. The result:

• The sensors can be calibrated unter optimum external conditions in the measuring lab. Wind and weather
do neither affect the calibration quality nor the operator.

• The measuring point availability is dramatically increased by the quick and easy replacement of precalibrated
sensors.

• The transmitter does not need to be installed close to the measuring point but can be placed in the control
room.

• Maintenance intervals can be defined based on all stored sensor load and calibration data and predictive
maintenance is possible.

• The sensor history can be documented on external data carriers and evaluation programs at any time. Thus,
the current application of the sensors can be made to depend on their previous history.

Communication with the transmitter

Always connect the digital sensor to a digital transmitter with Memosens technology. Data transmission to an
analog transmitter is not possible.

Orbisint CPS12 / CPS12D / CPS13

2 Endress+Hauser

Orbisint CPS12 / CPS12D / CPS13

Data storage of CPS12D Digital sensors are able to store the following system data in the sensor.

• Manufacturing data
– Serial number
–Order code
– Date of manufacture

• Calibration data
– Calibration date
– Calibrated offset (operating mode "mV")
– % slope (operating mode "%")
– Number of calibrations
– Serial number of the transmitter used for the last calibration

• Application data
– Temperature application range
– Redox application range
– Date of first commissioning
– Operating hours

These system data can be displayed with the Mycom S or the Liquiline M CM42 transmitter.

Measuring system A complete measuring system comprises:

• CPS12 or CPS12D ORP electrode

• transmitter, e.g. Liquisys M CPM223/253 (with Memosens technology for CPS12D)

• special measuring cable, e.g. CPK9 or Memosens data cable CYK10 for CPS12D

• immersion, flow or retractable assembly, e.g. Cleanfit P CPA472

Measuring system for measurement of redox potential

1 Retractable Cleanfit P CPA472 assembly
2 CPS12 / CPS12D ORP electrode
3 CPK9 special measuring cable (for electrodes with TOP68 plug-in head) / CYK10 for digital sensors
4 Liquisys M CPM253 transmitter

a0003690

Endress+Hauser 3

Orbisint CPS12 / CPS12D / CPS13

Input

Measured variables Redox potential

Measuring range -1500 ... 1500 mV

Caution!

"

Please note the process operating conditions.

Installation

Installation instructions Do not install the electrode upside down. The inclination angle must be at least 15° from the horizontal. A

smaller inclination angle is not permitted as such an inclination results in air cushion forming. This might impair
the contact of reference and metal lead.

Caution!

"

• Make sure that the assembly’s threaded connection for the electrode is clean and well running before
installing the electrode.

• Hand tighten the electrode (3 Nm)! (Given value only applies to installation in Endress+Hauser assemblies.)

• Make sure to follow the installation instructions in the operating instructions of the used assembly.

Electrode installation; inclination angle min. 15° from the horizontal

A Permitted inclination angle
B Non-permitted inclination angle

Environment

Ambient temperature

Caution!

"

Danger of frost damage

Do not use the electrode at temperatures below -15 °C / 5 °F.

Storage temperature 0 ... 50 °C / 32 ... 122 °F

Ingress protection

IP 67: GSA plug-in head (with closed plug-in connection)
IP 68: TOP 68 plug-in head (1 m / 3.28 ft water column, 50 °C / 122 °F, 168 h)
IP 68: Memosens plug-in head (10 m / 32.8 ft water column, 25 °C /77 °F, 45 days, 1 M KCl)

15°

A

15°

B

a0003686

4 Endress+Hauser

Orbisint CPS12 / CPS12D / CPS13

Process

Process temperature -15 ... 135 °C / 5 ... 275 °F

Process pressure 0 ... 16 bar / 0 ... 232 psi

Application

Design, dimensions CPS12

CPS12,
CPS12D:

• Gold electrode
for oxidising media, e.g. cyanide oxidation, nitrite oxidation, ozone measurement, hydrogen
superoxide measurement

• Platinum electrode
for reducing media, e.g. chromate reduction, chlorine dosing in swimming pools

CPS13: Single reference electrode, used in combination with the single pH electrode CPS64

Caution!

"

Danger of damage to the electrode

Never use the electrode in applications outside the given specifications!

Mechanical construction

mm / inch

1

30.2 / 1.19

2

3

52.3 / 2.06

mm/inch

1

2

3

120, 225, 360 / 4.72, 8.86, 14.17

12 / 0.47

CPS12 with GSA plug-in head

1 GSA plug-in head, PG 13.5
2 Viton O-ring with thrust collar
3 Inner metal lead
4 Ag/AgCl lead for the reference
5 "Advanced Gel" electrolyte
6 PTFE diaphragm
7 Gold pin or platinum ring

4

4

5

5

6

7

a0003689-en

CPS12 with TOP68 plug-in head

1 TOP68 plug-in head, Pg 13.5
2 Viton O-ring with thrust collar
3 Inner metal lead
4 Ag/AgCl lead for the reference
5 "Advanced Gel" electrolyte
6 PTFE diaphragm
7 Gold pin or platinum ring

120, 225, 360 / 4.72, 8.86, 14.17

6

7

12 / 0.47

a0003688-en

Endress+Hauser 5

Orbisint CPS12 / CPS12D / CPS13

Design, dimensions CPS12D

mm / inch

50 / 1.97

120, 225, 360 /

4.72, 8.86, 14.17

12 / 0.47

CPS12D with Memosens plug-in head
1 Memosens plug-in head

2 Viton O-ring with thrust collar
3 Inner metal lead
4 Ag/AgCl lead for the reference
5 "Advanced Gel" electrolyte
6 NTC 30K temperature sensor
7 PTFE diaphragm
8 Gold pin or platinum ring

1

2

3

4

5

6

7

8

a0003696-en

Design, dimensions CPS13

mm / inch

30.2 / 1.19

120/4.72

(80/3.15forCPA320)

12 / 0.47

CPS13 with GSA plug-in head

1 GSA plug-in head, Pg 13.5
2 Viton O-ring with thrust collar
3 Ag/AgCl reference lead
4 "Advanced Gel" electrolyte
5 PTFE diaphragm

mm / inch

1

2

52.3 / 2.06

1

2

3

4

3

4

120 / 4.72

(80 / 3.15 for CPA320)

5

5

12/0.47

a0004256-en

a0004255-en

CPS13 with TOP68 plug-in head

1 TOP68 plug-in head, Pg 13.5
2 Viton O-ring with thrust collar
3 Ag/AgCl reference lead
4 "Advanced Gel" electrolyte
5 PTFE diaphragm

6 Endress+Hauser

Orbisint CPS12 / CPS12D / CPS13

Weight 0.1 kg / 0.2 lb.

Material

Process connection Pg 13.5

Plug-in heads

Reference system Ag/AgCl lead with Advanced Gel 3 M KCl, AgCl free

Electrode shaft glass, suitable for processes
Redox measuring element platinum ring or gold pin
Diaphragm ring-shaped Teflon

CPS12, CPS13:

ESA: ESA plug-in head Pg 13.5, TOP68, 16 bar / 232 psi, Ex
GSA: GSA plug-in head Pg 13.5

CPS12D: Memosens plug-in head for digital, contactless data transmission,

16 bar / 232 psi, Ex or non-Ex

®

Certificates and approvals

Ex approval CPS12 (ESA) /
CPS13 (ESA)

Ex approval CPS12D • ATEX II 1G EEX ia IIC T3/T4/T6

!

• ATEX II 1G EEX ia IIC T3/T4/T6

• FM Class I Div. 2, in combination with the Liquiline M CM42 and Mycom S CPM153 transmitters

a

/ CSAa Class I Div. 2, in combination with the Liquiline M CM42 and Mycom S CPM153 transmitters

•FM

Note!
Ex versions of digital sensors with Memosens technology are indicated by an orange-red ring in the plug-in
head.

diaphragm, sterilisable

Biocompatibility Biocompatibility validated according to:

• ISO 10993-5:1993

• USP, current revision

TÜV certificate TOP68 and Memosens plug-in head

Electromagnetic compatibility of CPS12D

Pressure resistance 16 bar, min. triple overpressure safety

Interference emission and interference immunity complies with EN 61326: 1997 / A1: 1998

a) approval pending

Endress+Hauser 7

Ordering information

Orbisint CPS12 / CPS12D / CPS13

Product structure CPS12

Product structure CPS12D

Electrode type

0 Standard type

Measuring surface

NA Gold pin

PA Platinum ring

Shaft length

2 120 mm / 4.72"

4 225 mm / 8.86"

5 360 mm / 14.17"

Type of head

ESA Plug-in head Pg 13.5, TOP68, 16 bar, Ex

GSA Plug-in head Pg 13.5

CPS12- complete order code

Version

7 Basic version, max. 135 °C / 275 °F

Measuring surface

NA Gold pin

PA Platinum ring

Shaft length

2 120 mm / 4.72"

4 225 mm / 8.86"

5 360 mm / 14.17"

Approval

1 Non-hazardous areas

G ATEX II 1G EEx ia IIC T3/T4/T6

CPS12D- complete order code

Product structure CPS13

Electrode type

0 Standard type

Electrolyte

TA Advanced Gel filling (120 mm / 4.72" only)

TD Advanced Gel filling / double reference (80 mm / 3.15" only)

Shaft length

1 80 mm / 3.15"

2 120 mm / 4.72"

Type of head

ESA Plug-in head Pg 13.5, TOP68, 16 bar / 232 psi, Ex

GSA Plug-in head Pg 13.5

CPS13- complete order code

8 Endress+Hauser

Orbisint CPS12 / CPS12D / CPS13

Accessories

!

Assemblies • Cleanfit W CPA450

Note!
In the following sections, you find the accessories available at the time of issue of this documentation.
For information on accessories that are not listed here, please contact your responsible service.

Manually operated, retractable assembly for installation of 120 mm / 4.72" pH/ORP electrodes in tanks and
pipes,
Ordering acc. to product structure, see Technical Information (TI183C/07/en)

• Cleanfit P CPA471
Compact retractable stainless steel assembly for installation in tanks and pipes, manual or pneumatic
operation
Ordering acc. to product structure, see Technical Information (TI217C/07/en)

• Cleanfit P CPA472
Compact retractable plastic assembly for installation in tanks and pipes, manual or pneumatic operation,
Ordering acc. to product structure, see Technical Information (TI223C/07/en)

• Cleanfit P CPA473
Retractable stainless steel process assembly, with ball valve for a particularly safe and reliable separation of
the medium from the environment,
Ordering acc. to product structure, see Technical Information (TI344C/07/en)

• Cleanfit P CPA474
Retractable plastic process assembly, with ball valve for a particularly safe and reliable separation of the
medium from the environment,
Ordering acc. to product structure, see Technical Information (TI345C/07/en)

a0003138

Cleanfit W CPA450

a0003135

Cleanfit P CPA471 or 472

a0003137

Cleanfit P CPA473 or 474

Endress+Hauser 9

Orbisint CPS12 / CPS12D / CPS13

• Cleanfit H CPA475
Retractable assembly for installation in tanks and pipes under sterile conditions,
Ordering acc. to product structure, see Technical Information (TI240C/07/en)

• Unifit H CPA442
Process assembly for the food industry, biotechnology and pharmaceutical industry, with EHEDG and 3A
certificates,
Ordering acc. to product structure, see Technical Information (TI306C/07/en)

• Dipfit W CPA111
Plastic immersion and installation assembly for open and closed tanks,
Ordering acc. to product structure, see Technical Information (TI112C/07/en)

a0003139

Cleanfit H CPA475

a0003136

Unifit H CPA442

• Dipfit P CPA140
Immersion assembly for pH/ORP electrodes for demanding processes,
Ordering acc. to product structure, see Technical Information (TI178C/07/en)

• Flowfit P CPA240
Flow assembly for pH/ORP electrodes, for demanding processes,
Ordering acc. to product structure, see Technical Information (TI179C/07/en)

• Flowfit W CPA250
Flow assembly for pH/ORP electrodes,
Ordering acc. to product structure, see Technical Information (TI041C/07/en)

Dipfit W CPA111

a0003140

Dipfit P CPA140

a0003141

Flowfit P CPA240

a0003142

Flowfit W CPA250

a0003143

10 Endress+Hauser

Orbisint CPS12 / CPS12D / CPS13

• Probfit H CPA465

• Ecofit CPA640

Retractable assembly for installation in tanks and pipes under sterile conditions,
Ordering acc. to product structure, see Technical Information (TI146C/07/en)

Process connection adapter and cable set for 120 mm pH/ORP electrodes,
Ordering acc. to product structure, see Technical Information (TI264C/07/en)

Probfit H CPA465

a0003144

Ecofit CPA640

Buffer solutions Technical buffer solutions for ORP electrodes

• +220 mV, pH 7.0, 100 ml (0.026 US gal.); order no. CPY3-0

• +468 mV, pH 0.1, 100 ml (0.026 US gal.); order no. CPY3-1

Transmitters • Liquisys M CPM223/253

Transmitter for pH and redox, field or panel-mounted housing,

®

or PROFIBUS available

Hart
Ordering acc. to product structure, see Technical Information (TI194C/07/en)

• Mycom S CPM153
Transmitter for pH and redox, one or two channel version, Ex or Non-Ex,

®

or PROFIBUS available

Hart
Ordering acc. to product structure, see Technical Information (TI233C/07/en)

• Liquiline M CM42
Modular two-wire transmitter for Ex and non-Ex areas

®

Hart

, PROFIBUS or FOUNDATION Fieldbus available

Ordering acc. to product structure, see Technical Information (TI381C/07/en)

a0003145

Endress+Hauser 11

Measuring cables • CPK9 special measuring cable

For sensors with TOP68 plug-in head, for high-temperature and high-pressure applications, IP 68
Ordering acc. to product structure, see Technical Information (TI118C/07/en)

• CPK1 special measuring cable
For pH/redox electrodes with GSA plug-in head
Ordering acc. to product structure, see Technical Information (TI118C/07/en)

• CYK10 Memosens data cable
For digital sensors with Memosens technology
Ordering according to product structure, see below

Certificates

A Standard, non Ex

G ATEX II 1G EEx ia IIC T6/T4

Cable length

03 Cable length: 3 m / 9.84 ft

05 Cable length: 5 m / 16.41 ft

10 Cable length: 10 m / 32.81 ft

15 Cable length: 15 m / 49.22 ft

20 Cable length: 20 m / 65.62 ft

25 Cable length: 25 m / 82.03 ft

88 ... m length

89 ... ft length

Ready-made

1Wire terminals

CYK10- complete order code

!

Note!
Ex versions of CYK10 are indicated by an orange-red coupling end.

International Head Quarters

Endress+Hauser
GmbH+Co. KG
Instruments International
Colmarer Str. 6
79576 Weil am Rhein
Deutschland

Tel. [phone]
Fax[phone]
www.endress.com
[e-mail]

TI367C/07/de/05.05
51513586
Printed in Germany / FM+SGML 6.0 / DT