Page 1
TI00191C/07/EN/14.20
71478134
2020-04-27
Products
Solutions Services
Technical Information
Orbipac CPF81D/CPF82D and
CPF81/CPF82
pH/ORP sensors, with digital Memosens
technology or analog
For mining operations, industrial water and
wastewater treatment
Application
• Flotation
• Leaching
• Neutralization
• Outlet monitoring
Your benefits
• With patented KNO3 electrolyte bridge for improved protection against electrode
poisons such as S2- or CN- ions
• Optionally available with flat membrane for improved wear resistance
• Threaded connection NPT ¾" top and bottom for easy installation at user end
• Suitable for measurements in the 0 to 14 pH range and in the 0 to 110 °C
(32 to 230 °F) temperature range
• Digital pH sensors with integrated temperature sensor, analog pH sensors with or
without integrated temperature sensor
• Protection guard against damage
Other advantages provided by Memosens technology
• Maximum process safety
• Data security thanks to digital data transmission
• Very easy to use as sensor data are saved in the sensor
• Predictive maintenance can be performed by recording sensor load data in the
sensor
Page 2
Function and system design
2
1
3
Orbipac CPF81D/CPF82D and CPF81/CPF82
Measuring principle
Measuring system
pH measurement
The pH value is used as a unit of measurement for the acidity or alkalinity of a medium. The
membrane glass of the electrode delivers an electrochemical potential that depends on the pH value
of the medium. This potential is generated by the selective accumulation of H+ ions on the outer
layer of the membrane. As a result, an electrochemical boundary layer with an electrical potential
difference forms at this point. An integrated Ag/AgCl reference system serves as the required
reference electrode.
The measured voltage is converted to the corresponding pH value using the Nernst equation.
ORP measurement
The ORP potential is a unit of measurement for the state of equilibria between oxidizing and
reducing components of a medium. The ORP is measured using a platinum or gold electrode. Analog
to the pH measurement, an integrated Ag/AgCl reference system is used as a reference electrode.
A complete measuring system comprises:
• Sensor CPF81D, CPF81, CPF82D or CPF82
• Transmitter, e.g. Liquiline CM44x/R or Liquiline M CM42
• Measuring cable, e.g. CYK10 or sensor fixed cable
1 Example of a measuring system
1 Sensor CPF81D
2 Transmitter Liquiline CM44x
3 Measuring cable CYK10
Communication and data transmission
Communication with the transmitter
Always connect digital sensors with Memosens technology to a transmitter with Memosens
technology. Data transmission to a transmitter for analog sensors is not possible.
A0024721
2 Endress+Hauser
Page 3
Orbipac CPF81D/CPF82D and CPF81/CPF82
Digital sensors can store measuring system data in the sensor. These include the following:
• Manufacturing data
• Serial number
• Order code
• Date of manufacture
• Calibration data
• Calibration date
• Calibrated slope at 25 °C (77 °F) (CPF81D)
• Calibrated zero point at 25 °C (77 °F) (CPF81D)
• Calibrated offset (CPF82D, ORP mV measuring mode)
• Slope as % (CPF82D, ORP % measuring mode)
• Temperature offset
• Number of calibrations
• Serial number of the transmitter used for the last calibration
• Calibration database (stores the last 8 calibrations in the Memosens head)
• Application data
• Temperature application range
• pH application range (CPF81D)
• ORP application range (CPF82D)
• Date of first commissioning
• Maximum temperature value
• Operating hours at temperatures above 80 °C (176 °F) and 100 °C (212 °F)
• Operating hours at very low and very high pH values (Nernst voltage below -300 mV, above
+300 mV)
Dependability
Interference immunity
Safety
Reliability
Easy handling
Sensors with Memosens technology have integrated electronics that store calibration data and other
information (e.g. total hours of operation or operating hours under extreme measuring conditions).
Once the sensor has been connected, the sensor data are transferred automatically to the transmitter
and used to calculate the current measured value. As the calibration data are stored in the sensor,
the sensor can be calibrated and adjusted independently of the measuring point. The result:
• Easy calibration in the measuring lab under optimum external conditions increases the quality of
the calibration.
• Pre-calibrated sensors can be replaced quickly and easily, resulting in a dramatic increase in the
availability of the measuring point.
• Thanks to the availability of the sensor data, maintenance intervals can be accurately defined and
predictive maintenance is possible.
• The sensor history can be documented on external data carriers and in evaluation programs.
• Thus, the current application of the sensors can be made to depend on their previous history.
Data security thanks to digital data transmission
Memosens technology digitizes the measured values in the sensor and transmits the data to the
transmitter via a non-contact connection that is free from potential interference. The result:
• Automatic error message if sensor fails or connection between sensor and transmitter is
interrupted
• Immediate error detection increases measuring point availability
Maximum process safety
With inductive transmission of the measured value using a non-contact connection, Memosens
guarantees maximum process safety and offers the following benefits:
• All problems caused by moisture are eliminated:
• Plug-in connection free from corrosion
• Measured values cannot be distorted by moisture
• Can even be connected under water
• The transmitter is galvanically decoupled from the medium. Issues concerning "symmetrical highimpedance" or "asymmetry" or an impedance converter are a thing of the past.
• EMC safety is guaranteed by screening measures for the digital transmission of measured values.
Endress+Hauser 3
Page 4
Input
GN/YE
YE
GN
BN
WH
GND
+
–
Com A
Com B
GY
1
pH/ORP
+ Pt 100
PM
Coax BK
WH
GN
BN
WH
YE
Ref.
pH
Temp
Temp.
Temp.
PM
Measured values CPF81D and CPF81
pH value
Temperature
CPF82D and CPF82
ORP
Measuring range CPF81D and CPF81
Version LH
• pH: 0 to 14
• Temperature: 0 to 110 °C (32 to 230 °F)
Version NN
• pH: 0 to 14 (11 to 14 with reduced accuracy)
• Temperature: 0 to 80 °C (32 to 176 °F)
CPF82D, CPF82
-1500 mV to +1500 mV
Pay attention to the operating conditions in the process.
Orbipac CPF81D/CPF82D and CPF81/CPF82
Power supply
Electrical connection CPF81D and CPF82D
The electrical connection to the transmitter is established using measuring cable CYK10.
2 Measuring cable CYK10
CPF81 and CPF82 with TOP68 plug-in head
3 Measuring cable CPK9
1 Shield connection
A0024019
A0024668-EN
4 Endress+Hauser
Page 5
Orbipac CPF81D/CPF82D and CPF81/CPF82
BK
BK
GN/YE
BN
BK
BK
GN
WH
YE
GN/YE
BN
GN
WH
YE
A B
Reference
pH/ORP
Temperature
Temperature
Temperature
Outer screen
PM / n. c.*
CPF81 and CPF82 with fixed cable
4 Fixed cable connection
A Fixed cable CPF81 without temperature sensor and CPF82
B Fixed cable CPF81 with temperature sensor
* The PML is connected only in the case of sensor versions with an internal PML (CPF81-xxx2xx)
Performance characteristics
A0024680-EN
Resistance Glass impedance
150 MΩ at 25 °C (77 °F)
Installation
Installation instructions
• Before screwing in the sensor, make sure the assembly thread, the O-rings and the sealing surface
are clean and undamaged and that the thread runs smoothly.
• Pay attention to the installation instructions provided in the Operating Instructions of the
assembly used.
Screw in the sensor and tighten by hand with a torque of 3 Nm (2.21 lbf ft) (specifications only
‣
apply if installing in Endress+Hauser assemblies).
5 Flow installation
Endress+Hauser 5
A0024681
Page 6
Orbipac CPF81D/CPF82D and CPF81/CPF82
1
2
3
A0024690
6 Installation with immersion assembly with Flexdip CYA112
1 CYH112 holder
2 CYA112 assembly
3 Sensor
6 Endress+Hauser
Page 7
Orbipac CPF81D/CPF82D and CPF81/CPF82
60
80
100
20
40
0
2
4
6
8
10
140
180
220
60
10032
40
120
°C
°F
bar
psi
80
15
1
145
Environment
Ambient temperature range
Storage temperature
Degree of protection CPF81D and CPF82D
Electromagnetic compatibility (EMC)
NOTICE
Danger of frost damage
The sensor must not be used at temperatures below 0 °C (32 °F).
‣
0 to 50 °C (32 to 122 °F)
IP 68 (10 m (33 ft) head of water at 25 ˚C (77 ˚F) over 45 days, 1 mol/l KCl)
CPF81 and CPF82 with TOP68 plug-in head
IP 68 (1 m (3.3 ft) water column, 50 °C (122 °F), 168 h)
CPF81 and CPF82 with fixed cable
IP67
Interference emission and interference immunity in accordance with EN 61326-1:2006, EN
61326-2-3:2006
Memosens versions
for ESD > 8 kV: reduced accuracy ±1.5 pH
Process
Process temperature range
Process pressure range
Pressure-temperature ratings
Conductivity Minimum conductivity
CPF81D, CPF81
• Version LH: 0 to 110 °C (32 to 230 °F)
• Version NN: 0 to 80 °C (32 to 176 °F)
CPF82D, CPF82
0 to 80 °C (32 to 176 °F)
1 to 10 bar absolute, at 80 °C (15 to 145 psi absolute, at 176 °F)
7 Pressure-temperature ratings
50 μS/cm
A0024703
Endress+Hauser 7
Page 8
Mechanical construction
58.5 (2.3)
150 (5.91)
Ø 22 (0.87)
35 (1.38)
1
2
3
4
2
12.5 (0.49)
140 (5.51)
Ø 22 (0.87)
35 (1.38)
1
2
3
4
2
23 (0.91)
150 (5.91)
Ø 22 (0.87)
35 (1.38)
1
2
3
4
2
5
Design, dimensions Integrated preamplifier (optional)
Structure cast in sensor body
Power supply via integrated coin cells
Reference potential: reference electrode
With preamplifier versions, the sensor check function (SCS) of the transmitter is ineffective and
should be turned off.
Dimensions CPF81D, CPF82D
Orbipac CPF81D/CPF82D and CPF81/CPF82
A0024671
A0024672
9 CPF81D with flat membrane.
8 CPF81D with long shaft.
Dimensions: mm (in)
1 Memosens plug-in head
2 NPT ¾" thread
3 Across flats AF 26
4 Protection guard
Dimensions: mm (in)
1 Memosens plug-in head
2 NPT ¾" thread
3 Across flats AF 26
4 Flat membrane
10 CPF82D with short shaft.
Dimensions: mm (in)
1 Memosens plug-in head
2 NPT ¾" thread
3 Across flats AF 26
4 Platinum ring
5 Protection guard
A0024673
8 Endress+Hauser
Page 9
Orbipac CPF81D/CPF82D and CPF81/CPF82
12.5 (0.49)
140 (5.51)
Ø 22 (0.87)
1
2
3
4
2
Ø 22 (0.87)
23 (0.91)
150 (5.91)
1
2
3
4
2
Ø 22 (0.87)
58.5 (2.3)
150 (5.91)
1
2
3
4
2
CPF81, CPF82
Weight
Materials
Process connections
A0024676
11 CPF81 with TOP68 plug-in
head and short shaft.
Dimensions: mm (in)
1 TOP68 plug-in head
2 NPT ¾" thread
3 Across flats AF 26
4 Flat membrane
12 CPF82 fixed cable version
and short shaft. Dimensions:
mm (in)
1 Fixed cable
2 NPT ¾" thread
3 Across flats AF 26
4 Protection guard
A0024674
13 CPF82 fixed cable version
and long shaft. Dimensions:
mm (in)
1 Fixed cable
2 NPT ¾" thread
3 Across flats AF 26
4 Protection guard
0.12 to 0.15 kg (0.26 to 0.33 lb), depending on the version and excluding a cable
Housing, sensor shaft
PPS
pH sensor (in contact with medium) Lead-free membrane glass, suitable for process
applications
ORP sensor (in contact with medium) Platinum
Double chamber reference system KNO3 and KCl/AgCl
NPT ¾"
Certificates and approvals
A0024677
Ex approval
EAC
FM IS NI Cl. I Div.1&2, Groups A-D
CSA C/US
IS CL. I. Div 1&2, Group A-D T4/T6
The product has been certified according to guidelines TP TC 004/2011 and TP TC 020/2011 which
apply in the European Economic Area (EEA). The EAC conformity mark is affixed to the product.
Endress+Hauser 9
Page 10
Ordering information
Orbipac CPF81D/CPF82D and CPF81/CPF82
Product page
Product Configurator
Scope of delivery
www.endress.com/cpf81d
www.endress.com/cpf81
www.endress.com/cpf82d
www.endress.com/cpf82
On the product page there is a Configure button to the right of the product image.
1. Click this button.
The Configurator opens in a separate window.
2. Select all the options to configure the device in line with your requirements.
In this way, you receive a valid and complete order code for the device.
3. Export the order code as a PDF or Excel file. To do so, click the appropriate button on the right
above the selection window.
For many products you also have the option of downloading CAD or 2D drawings of the
selected product version. Click the CAD tab for this and select the desired file type using
picklists.
The delivery comprises:
• Sensor in the version ordered
• Operating Instructions
Assembly
Measuring cables
Buffer solutions
Accessories
The following are the most important accessories available at the time this documentation was
issued.
For accessories not listed here, please contact your Service or Sales Center.
‣
Flexdip CYA112
• Immersion assembly for water and wastewater
• Modular assembly system for sensors in open basins, channels and tanks
• Material: PVC or stainless steel
• Product Configurator on the product page: www.endress.com/cya112
Technical Information TI00432C
Memosens data cable CYK10
• For digital sensors with Memosens technology
• Product Configurator on the product page: www.endress.com/cyk10
Technical Information TI00118C
Measuring cable CPK9
• Terminated measuring cable for connecting analog sensors with TOP68 plug-in head
• Selection in accordance with product structure
• Ordering information: Endress+Hauser sales office or www.endress.com.
High-quality buffer solutions from Endress+Hauser - CPY20
The secondary buffer solutions have been referenced to primary reference material of the PTB
(German Federal Physico-technical Institute) or to standard reference material of NIST (National
Institute of Standards and Technology) according to DIN 19266 by a laboratory accredited by the
DAkkS (German accreditation body) according to DIN 17025.
Product Configurator on the product page: www.endress.com/cpy20
ORP buffer solution CPY3
• 220 mV, pH 7, 250 ml (8.5 fl oz)
• 468 mV, pH 0.1, 250 ml (8.5 fl oz)
10 Endress+Hauser
Page 11
Orbipac CPF81D/CPF82D and CPF81/CPF82
Product Configurator on the product page: www.endress.com/cpy3
Endress+Hauser 11
Page 12
www.addresses.endress.com
Loading...