Endress+Hauser ISEmax CAM40 User manual

BA427C/07/en/04.08
71072748
Operating Instructions
ISEmax CAM40/CAS40
Ion selective electrode system

Endress+Hauser
ISEmax CAM/CAS40
Table of contents
1 Safety instructions . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning and operation . 4
1.3 Operational safety . . . . . . . . . . . . . . . . . . . 4
1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Notes on safety icons and symbols . . . . . . . 5
1.6 Cross references and other symbols . . . . . . 5
2 Identification . . . . . . . . . . . . . . 6
2.1 Device designation . . . . . . . . . . . . . . . . . . . 6
2.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . 7
2.3 Certificates and approvals . . . . . . . . . . . . . . 7
3 Installation . . . . . . . . . . . . . . . . 8
3.1 Incoming acceptance, transport, storage . . . 8
3.2 Installation conditions . . . . . . . . . . . . . . . . 8
3.3 Installation instructions . . . . . . . . . . . . . . . 9
3.4 Installation example . . . . . . . . . . . . . . . . . 10
3.5 Post-installation check . . . . . . . . . . . . . . . 11
4 Wiring . . . . . . . . . . . . . . . . . . 12
4.1 Electrical connection to the transmitter . . 12
4.2 Sensor connection . . . . . . . . . . . . . . . . . . 12
4.3 Post-connection check . . . . . . . . . . . . . . . 13
5 Operation . . . . . . . . . . . . . . . . 14
5.1 Human interface . . . . . . . . . . . . . . . . . . . 14
5.2 Operating concept . . . . . . . . . . . . . . . . . . 14
5.3 Local operation . . . . . . . . . . . . . . . . . . . . 15
6 Commissioning. . . . . . . . . . . . 31
6.1 Function check . . . . . . . . . . . . . . . . . . . . 31
6.2 Switching on . . . . . . . . . . . . . . . . . . . . . . 31
6.3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . 32
7 Maintenance. . . . . . . . . . . . . . 35
7.1 Maintenance schedule . . . . . . . . . . . . . . 35
7.2 Cleaning the membrane . . . . . . . . . . . . . 35
7.3 Replacing the membrane cap and electrolyte
35
8 Accessories. . . . . . . . . . . . . . . 37
8.1 Installation accessories . . . . . . . . . . . . . . . 37
8.2 Maintenance kits . . . . . . . . . . . . . . . . . . . 39
8.3 Electrodes . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.4 Standard solution . . . . . . . . . . . . . . . . . . . 39
8.5 Air compressor . . . . . . . . . . . . . . . . . . . . . 39
9 Trouble-shooting. . . . . . . . . . . 40
9.1 Trouble-shooting instructions . . . . . . . . . . 40
9.2 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . 40
9.3 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . 41
10 Technical data . . . . . . . . . . . . . 42
11 Operating structure. . . . . . . . . 43
Index. . . . . . . . . . . . . . . . . . . . 44

Safety instructions ISEmax CAM/CAS40
4Endress+Hauser
1 Safety instructions
1.1 Designated use
The ion-selective electrode system is designed for measuring tasks in the activated sludge basin
of municipal sewage treatment plants.
The following parameters can be monitored depending on the device version:
•Nitrate
• Ammonium
• Potassium (to compensate ammonium)
• Chloride (to compensate nitrate)
• pH value
Any other use than the one described here compromises the safety of persons and the entire
measuring system and is, therefore, not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.
1.2 Installation, commissioning and operation
Please note the following items:
• Installation, commissioning, operation and maintenance of the measuring system must only
be carried out by trained technical personnel.
The technical personnel must be authorized for the specified activities by the system operator.
• Electrical connection must only be carried out by a certified electrician.
• Technical personnel must have read and understood these Operating Instructions and must
adhere to them.
• Before commissioning the entire measuring point, check all the connections for
correctness. Ensure that electrical cables and hose connections are not damaged.
• Do not operate damaged products and secure them against unintentional
commissioning. Mark the damaged product as being defective.
• Measuring point faults may only be rectified by authorized and specially trained
personnel.
• If faults can not be rectified, the products must be taken out of service and secured against
unintentional commissioning.
• Repairs not described in these Operating Instructions may only be carried out at the
manufacturer’s or by the service organization.
1.3 Operational safety
The sensor has been designed and tested according to the state of the art and left the factory in
perfect functioning order.
Relevant regulations and European standards have been met.
As the user, you are responsible for complying with the following safety conditions:
• Installation instructions
• Local prevailing standards and regulations.

ISEmax CAM/CAS40 Safety instructions
Endress+Hauser 5
1.4 Return
The CAM40 or CAS40 is repaired on site.
Contact your Endress+Hauser Service.
1.5 Notes on safety icons and symbols
1.6 Cross references and other symbols
#
Warning!
This symbol alerts you to hazards. They can cause serious damage to the instrument
or to persons if ignored.
"
Caution!
This symbol alerts you to possible faults which could arise from incorrect operation.
They could cause damage to the instrument if ignored.
!Note!
This symbol indicates important items of information.
È ä 1 This symbol indicates a cross reference to a defined page (e.g. p. 1).
È å 2 This symbol indicates a cross reference to a defined figure (e.g. fig. 2).
Additional information, tips
Permitted or recommended
Forbidden or not recommended
An explanatory video-clip for the topic in question is provided on the original CD.

Identification ISEmax CAM/CAS40
6Endress+Hauser
2 Identification
2.1 Device designation
2.1.1 Nameplate
2.1.2 Product structure
Transmitter CAM40
a0009824
Fig. 1: Example for CAM40
a0009825
Fig. 2: Example for CAS40
Power supply
A 100 - 240 VAC; 50/60 Hz
Signal output
1 4 x 0/4 - 20 mA
CAM40- Complete order code
70839 Gerlingen, Germany
ISEmax CAM40
Ser.No.:
CAM40-A1
12345678I01
Outputs: 4x0/4-20 mA
Mains: 100-240V AC,
48/62Hz, max.60VA
IP54
-20 ..+50°C
Channels: max. 2x CAS40
Contacts: 5 relays, max. 5A,
max. 250V AC
Order Code:
Ambient temp:
70839 Gerlingen, Germany
ISEmax CAS40
Order Code:
Serial No.:
CAS40-B2B1
A234EF05I00
IP68
Process temp.: 0 ... +60°C
Meas. range 2 NO3-N: 0,5 - 1000 mg/l
Meas. range 1 NH4-N: 0,1 - 1000 mg/l

ISEmax CAM/CAS40 Identification
Endress+Hauser 7
Sensor CAS40
2.2 Scope of delivery
The scope of delivery comprises:
• 1 transmitter
• 1 sensor (version as per nameplate)
• 1 set of Brief Operating Instructions
• 1 set of Operating Instructions on CD-ROM
If you have any questions, please contact your supplier or your sales center responsible.
2.3 Certificates and approvals
Declaration of conformity
The product meets the requirements of the harmonized European standards. It thus complies
with the legal requirements of the EC directives.
The manufacturer confirms successful testing of the product by affixing the 4symbol.
Application
A Aeration basin, nitrification, denitrification, with reference electrode
B Inlet aeration basin, with pH compensation (only ammonium)
Ion-selective parameter
1 Ammonium + nitrate
2 Ammonium
3Nitrate
Compensation electrode
ANone
B Potassium (only ammonium)
C Chloride (only nitrate)
Cable length
110m(33ft)
9 Special version, to be specified
CAS40- Complete order code

Installation ISEmax CAM/CAS40
8Endress+Hauser
3 Installation
3.1 Incoming acceptance, transport, storage
• Make sure the packaging is undamaged!
Inform the supplier about damage to the packaging. Keep the damaged packaging until the
matter has been settled.
• Make sure the contents are undamaged!
Inform the supplier about damage to the delivery contents. Keep the damaged products until
the matter has been settled.
• Check that the scope of delivery is complete and agrees with your order and the shipping
documents.
• The packaging material used to store or to transport the product must provide shock
protection and humidity protection. The original packaging offers the best protection. Also,
keep to the approved ambient conditions (see "Technical data").
• If you have any questions, please contact your supplier or your sales center responsible.
3.2 Installation conditions
a0009592
Fig. 3: CAM40 dimensions
256 (10.1)
157 (6.18)
216 (8.50)
112 (4.41)
122 (4.80)
70 (2.76)
mm (inch)

ISEmax CAM/CAS40 Installation
Endress+Hauser 9
3.3 Installation instructions
"Caution!
• Select a measuring place that is easily accessible so that no hazards for operating staff can
occur.
• Select a measuring place with representative concentration levels.
• If mounting the transmitter outdoors, you must use a weather protection cover which you can
order as an accessory.
1. Secure the transmitter to an upright post, a railing or a wall.
2. Mount the sensor using the optional bracket. The sensor must be immersed in the medium
over approx. 30 cm (12").
3. Route the cables in such a way that no mechanical damage or interference influences can
arise from other cables.
4. Connect the compressed air to the sensor.
a00095923
Fig. 4: CAS40 dimensions
75 (2.95)
107 (4.21) 43 (1.69)
360 (14.2) 660 (26.0)
12 (0.47)
107 (4.21)
64 (2.52)
mm (inch)
6 (0.24)

Installation ISEmax CAM/CAS40
10 Endress+Hauser
3.4 Installation example
A complete measuring system comprises:
• CAM40 transmitter
• CAS40 sensor
– Ion-selective electrode(s) for ammonium and/or nitrate
– Reference electrode
– Ion-selective electrode for compensating cross-interference
– pH glass electrode
Optional
• Upright post with boom
• Wall retainer
• Weather protection cover - absolutely essential if mounting the transmitter outdoors!
• Compressor (if no compressed air is available on site)
a0009239
Fig. 5: Example: measuring system on basin rim
1
2
CAM40 transmitter
Upright post with weather protection
cover
3
4
CAS40 sensor
Compressed air supply (cleaning)
12
3
4

ISEmax CAM/CAS40 Installation
Endress+Hauser 11
3.5 Post-installation check
• After mounting, check all the connections to ensure they are secure and leak-tight.
• Check all cables and hoses for damage.
• Check whether the cables are routed such that they are free from electromagnetic
interference influences.

Wiring ISEmax CAM/CAS40
12 Endress+Hauser
4 Wiring
#Warning!
• The electrical connection must only be carried out by a certified electrician.
• Technical personnel must have read and understood the instructions in this manual and must
adhere to them.
• Ensure that there is no voltage at the power cable before beginning the connection work.
4.1 Electrical connection to the transmitter
4.2 Sensor connection
Connect the sensor directly to the transmitter via the cable connector.
You can connect a maximum of 2 sensors to CAM40.
Electrode connection in the sensor:
Terminal Assignment
a0009558-en
Fig. 6: CAM40 wiring diagram
L1, N
1, 2
3, 4
5, 6
7, 8
9, 10
21, 22
23, 24
25, 26
27, 28
PE, PE
230 V AC power supply
Relay 1, max. 230 V AC, 2 A
Relay 2, max. 230 V AC, 2 A
Relay 3, max. 230 V AC, 2 A
Relay 4, max. 230 V AC, 2 A
Relay 5, max. 230 V AC, 2 A
Analog output 1
Analog output 2
Analog output 3
Analog output 4
Protective earth
!Note!
A compressor can optionally be controlled to terminals
9 and 10. In such instances, relay 5 is no longer
available.
Electrode Color of the screw head Color of the membrane cap Cable label
Ammonium RD RD 1
Nitrate BU GY 2
Potassium YE BK 3
Other BK BK ...
L1
N
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
PE
PE
+-+-+-+-+- +-+-+-+-
230 V AC
0/4..20mA
Analog
outputs
(Channel 1-4)
Ground
Relay LV 2
(2)Limit value
Power supply
Relay LV 1
(Limit value 1)
(Alarm relay)
Relay LV 3
(3)Limit value
Relay LV 4
(4)Limit value
Relay Error

ISEmax CAM/CAS40 Wiring
Endress+Hauser 13
4.3 Post-connection check
Checks Notes
Is the supply voltage correct? 100 to 240 V DC
Are the installed cables strain-relieved and not twisted?
Are all the cable entries installed, firmly tightened and leak-tight?

Operation ISEmax CAM/CAS40
14 Endress+Hauser
5 Operation
5.1 Human interface
5.2 Operating concept
a0009551
Fig. 7: ISEmax CAM40 display
Call up the menu functions Measure + release the output signals
Confirm, switch, scroll Call up calibration routines
"Freeze" (hold) the display Trigger manual cleaning
Call up a menu
Call up the editing mode +
Navigate in the menu ,
Scroll
Select function/position
Change position/value ,
Save the settings Cursor on "Menu", twice
CAM40

ISEmax CAM/CAS40 Operation
Endress+Hauser 15
5.3 Local operation
5.3.1 Measuring channels
You can change the measuring channel displayed and other displays by pressing the key.
!Note!
The factory settings are highlighted in bold in the following tables.
You have to wait 10 minutes before the settings are saved automatically to the EEPROM.
If you want to save your changes immediately, you have to select "Save data" under "Display/change" in the
"Sensor data" main menu.
Otherwise, the changes are lost if you switch off the device before 10 minutes have elapsed.
Exit the menu
Characters available for user-defined fields:
AB CDE F GHI J K L MNOP QR S T UV
WXYZabcdef ghi j kl mnopqr
stuvwxyz !"#$%&’()*+,-
. /0123456789: ; <=>? @
a0009711-en a0009712-en
a0009713 a0009714-en
ISE : Nitrat
ISEmax CAM40
Slope : 91.03
Offset: 0.55
Caltyp: Offset
mg/l 3.05
T 19.8°C
Addr.No: 002
Error: none
Cleaning:
Interval: 02.0
Duration: 004
Signal: 55.08
Date: 12.05.08
Time: 10:55:05
Ammonium
ISE : Nitrat
ISEmax CAM40
Slope : 84.03
Offset: 1.45
Caltyp: Offset
mg/l 8.25
T 17.3°C
Addr.No: 002
Error: none
Cleaning:
Interval: 02.0
Duration: 004
Signal: 56.08
Date: 12.05.08
Time: 10:48:05
Nitrate
Version 10.2
ISEmax CAM40
Ammonium... 29.03 mg/l
Nitrate ------
8.17 mg/l
12/10 12/10
13:45 14:00

Operation ISEmax CAM/CAS40
16 Endress+Hauser
5.3.2 Sensor data
!Note!
This menu is available for every measuring channel. You have to make the settings separately
for each individual measuring channel (=electrode).
Since the functions are the same, the menu is only explained once here.
Main menue
Switch to the measuring channel you want to configure, e.g. nitrate:
The key takes you to the "Sensor data" main menu.
Function Configuration options Description
Name Addr:xx1) User-defined text Enter a tag name.
Sensor data
Slope 0.00 to 100% Relative slope in relation to the nominal value 59.1 mV,
at 25 °C (77 °F)
Offset -9.99 to +9.99 pX Electrode zero point
The electrode offset changes with the duration of use.
Regular calibration is required to adapt the zero point of
the transmitter to the actual zero point of the electrode.
Electrode • Ammonium
•Nitrate
• Potassium
•Chloride
•pH-Type
Select the electrode type.
This enables factory settings that apply for this electrode
type.
Zero line 00.00 mg/l Corresponds to the lower determination limit.
Do not change this value.
Calibration
Actual value 00.00 to 99.99 mg/l Calibration value
Enter the laboratory value of a sample with added
standard.
Method • Offset
•2-Point( )
•StdAdd.( )
•C-Curve( )
Only use offset calibration. The other types of calibration
are possible but are not recommended and are thus not
explained here.
ISE : Nitrat
ISEmax CAM40
Slope : 84.03
Offset: 1.45
Caltyp: Offset
mg/l 8.25
T 17.3°C
Addr.No: 002
Error: none
Cleaning:
Interval: 02.0
Duration: 004
Signal: 56.08
Date: 12.05.08
Time: 10:48:05
Nitrate

ISEmax CAM/CAS40 Operation
Endress+Hauser 17
General
Start position • Measure
•Service
Mode of the transmitter after power-up.
In the "Maintenance" position, the analog outputs are set
to "Hold". You have to press the key to switch to the
"Measure" operating mode.
Checktype • Off
•Normal
•Medium
•Strong
Here you can specify what criterion should apply to
electrode function monitoring.
In the "Off" position, the electrode is only checked during
the calibration. In all other positions, it is checked
constantly with different tolerances.
Auto zero • Manual
•Automatic
• Manual: zero adjustment with the calibration. Normal
situation for large measuring ranges.
• Automatic: internal zero adjustment. Increases the
accuracy in the lower measuring range.
Current outputs (2nd page, scroll with )
mA-Range • 4 to 20 mA
• 0 to 20 mA
You define the signal range that corresponds to your
measuring range.
Start point 00.00 to 99.99 mg/l
0.00 mg/l
Enter the concentration that should correspond to the 0
mA or 4 mA signal (= start of measuring range).
End point 00.00 to 99.99 mg/l
20.00 mg/l
Enter the concentration that should correspond to the
20 mA signal (= end of measuring range).
Limit values
Prealarm 00.00 to 99.99 mg/l
25.00 mg/l
The prealarm or alarm is triggered if the value is overshot.
Alarm 00.00 to 99.99 mg/l
30.00 mg/l
Hysteresis 00.00 to 99.99 mg/l
00.01 mg/l
Switching threshold
Delay 000.0 to 999.9 min
000.0 min
The alarm is delayed by the time configured.
Function Configuration options Description

Operation ISEmax CAM/CAS40
18 Endress+Hauser
Display
Units Depending on the measuring
channel:
•NH4-N
•NO3-N
•NH4
• NO3
•g/l
•log
•mV
•pH
The options and the factory settings depend on the
electrode configured.
Modification • allowed
• locked
•savedata
•loaddata
This setting only refers to the measuring channel in
question.
• Allowed:
Changes are saved automatically after 10 minutes
• Locked:
Changes are not saved
•Savedata:
Changes are saved immediately
• Load data:
You load the data last saved
System • Reset
•Default
• Test ( )
• Reset: restart with the current settings
• Default: restart with factory settings
All user settings are lost!
• Test: test operation, do not use!
Zero point 00.00 to 99.99 mg/l
00.02 mg/l
Lowest concentration that can be displayed and output at
the signal outputs.
Rinsing (3rd page, scroll with )
Intervall 00.00 to 99.99 h
01.00 h
Interval between two rinses
Duration 000 to 999 s
004 s
Rinsing duration
Hold time 000 to 999 s
010 s
Time during which the measured value is held after a
rinse.
Automatic • Yes
•No
Automatic function active or not
Function Configuration options Description

ISEmax CAM/CAS40 Operation
Endress+Hauser 19
Winter service
Intervall 00.00 to 99.99 h
00.10 h
Interval between two rinses
Duration 000 to 999 s
001 s
Rinsing duration
Hold time 000 to 999 s
005 s
Time during which the measured value is held after a
rinse.
Temperature 000 to 999 °C
008 °C
The winter service is enabled if this temperature is
undershot.
Automatic • Yes
•No
Function active or not
Menue • MainMnu
•CalMnu
•SensorMnu
• AddOnMnu ( )
From here, switch to the calibration or sensor menu. If
you accept the MainMnu factory setting, you remain in
this menu.
1) xx stands for the measuring channel number actually displayed
Function Configuration options Description

Operation ISEmax CAM/CAS40
20 Endress+Hauser
Sensor menue
Function Configuration options Description
Name Addr:xx1) User-defined text Only change this field in the main menu. Otherwise, you
overwrite your entries in the main menu.
Cross-Sensitivity Ions that have an identical charge and a comparable ion
radius exhibit cross-sensitivity.
For this reason, potassium interferes with ammonium
measurement, and chloride with nitrate measurement. A
potassium concentration of 20 mg/l feigns an ammonium
concentration of 1 mg/l, and 240 mg/l of chloride feigns
1 mg/l nitrate.
Channel number 00 to 99
01
Here, enter the channel to which you have connected an
optional compensation electrode.
Example: You are in the sensor menu for ammonium.
Enter the channel to which you have connected a
potassium electrode.
Coeffizient -9.99 to +9.99
-9.99
Logarithmic factor which is used to compensate the
cross-sensitivity of the interference ion.
-9.99 = 10-9.99, virtually corresponds to no compensation
Addition • Yes
•No
•Yes:
The measured value is increased depending on the
concentration of the interference ion and the factor.
•No:
The measured value is decreased depending on the
concentration of the interference ion and the factor
(normal situation).
Electrode-Specification
Buffer solution -999 to 999 mV
+270 mV
Sensor-specific data
Assigned automatically.
Do not change anything here.
Norm-Offset -9.99 to +9.99 pX
+0.00 pX
mA-Outputs
Averaging over 000 to 999 points
000 points
In the event of severely fluctuating measuring signals, you
can obtain a more stable signal at the analog output by
averaging over the set number of measuring points.
mA-simulation 00.00 to 99.99 mA
00.00 mA
Use this function to test communication via the current
output.
Specify a current value that should be output at the
analog output.