Endress+Hauser CPA450 Specifications
TI00183C/07/EN/14.18
71446840
2018-12-31
Products Solutions Services
Technical Information
Cleanfit CPA450
Retractable assembly for fitting and removing
12 mm sensors for pH, redox and oxygen
measurement under process conditions
Application
• Universal flow assembly for pH/ORP, oxygen and conductivity sensors
• Power stations
• Chemical industry
• Industrial water treatment
• Supply technology
Your benefits
• Simple fitting and removal of the pH/redox or oxygen sensor for easy maintenance
• Sensor cleaned and calibrated without interrupting the process
• Process is reliably screened off by stainless steel ball valve, ensuring safety during
maintenance work
• Use of ISFET sensors and standard gel electrodes 120 mm long
• Three immersion depths up to 700 mm (27.5")
• Safety equipment can be used up to 12 bar (175 psi)
• Integrated rinse connections
• Assembly available in stainless steel, ultra corrosion-resistant C22 nickel alloy and
titanium
Function and system design
1
2
3
Cleanfit CPA450
Measuring system
A complete measuring system comprises:
• Assembly Cleanfit CPA450
• Oxygen/pH/ORP electrode, length 120 mm (4.72"), e.g. Orbisint CPS11D
• Transmitter, e.g. Liquiline CM44x or Liquiline CM42
• measuring cable, e.g. CYK10
Optional:
• Junction box M12 socket/cable or cable/cable
• Extension cable CYK11
Installation instructions
1 Measuring system with CPA450
1 Transmitter Liquiline CM44x
2 Measuring cable CYK10
3 Assembly Cleanfit CPA450
Mounting
The permitted orientation of the assembly depends on the sensor used:
• Digital sensors with Memosens technology, pH/ORP glass electrodes:
Install the assembly at an angle of at least 15° to the horizontal → 2, 3.
• ISFET sensors:
For ISFET sensors, there are basically no restrictions regarding orientation. The installation angle
should be from 0 to 180°.
• All other sensors:
Pay attention to the information in the relevant TI.
A0038005
2 Endress+Hauser
Cleanfit CPA450
15°
15°
A B
A
A0011679
2 Orientations
A Glass sensors: 15 ° to the horizontal
B ISFET sensors: 0 to 180° recommended
Insert the immersion assembly into the vessel or pipe to a depth that will ensure that medium
continuously washes around the electrode, even at the minimum level.
Installation with ball valve
To replace the sensor without interrupting the process, a ball valve is required. Depending on the
version, the ball valve forms part of the assembly or must be installed by the customer.
A0010209
3 Measuring mode (ball valve is open):
assembly is retracted
4 Service position (ball valve is closed): assembly is
extended for electrode replacement, calibration,
rinsing
A Top edge of adapter
Depending on the assembly version, a mounting clearance of at least 700 or 1150 mm (27.6" or
45.3") is required from the top edge of the adapter.
A0010210
Environment
Ambient temperature range
Storage temperature
Endress+Hauser 3
0 to 80 °C (32 to 176 °F)
0 to 80 °C (32 to 176 °F)
Process
200
4
8
-15
40 60 80 100 120 140
130
A
10
p [bar]
T [°C]
B
58
116
145
p [psi]
2
29
68
32
5
104
140
176 212 248
284
266
T [°F]
6
87
12
174
12
11
10
9
8
7
1
2
3
6
5
4
Cleanfit CPA450
Process temperature
Process pressure
Pressure-temperature chart
-15 to 130 °C (5 to 266 °F)
max. 12 bar at 100 °C (175 psi at 212 °F)
At pressures above 4 bar (58 psi) the use of a safety kit is strongly recommended.
A0038118-EN
5 Pressure/temperature ratings
A Maximum process pressure (static), only for fully installed assembly
B Maximum pressure for moving the assembly (functional)
Observe the maximum permitted process temperature and process pressure of the sensor.
Mechanical construction
Design
4 Endress+Hauser
6 Assembly in operational state (ball valve open)
A0010207
1 Setting collar for fixing the immersion depth
2 Bore for hook wrench
3 Rinse connection thread ¼ (316L) NPT ¼" (alloy
C22 or titanium)
4 Service chamber
5 Safety kit
6 Sensor holder with basket protector
7 Immersion tube
8 Lever for opening/closing the ball valve
9 Lock ring (metal)
10 Thread adapter nut (black)
11 M5/SW4 hexagon socket
12 Cable protector/cable gland
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