Endress+Hauser CUM 740 User manual

BA 232C/07/en/07.03
No. 51504299 CUM 740
Transmitter for Turbidity
and Solids Contents
Operating Instructions
Endress Hauser
The Power of Know How
Quality made by
Endress+Hauser
ISO 9001
ENDRESS+HAUSER
CUM 740

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Table of contents
1. Safety instructions ............................................................................. page.............................. 2
2. General information ........................................................................... ...................................... 3
2.1 Assembly instructions.............................................................. ...................................... 3
2.2 Functions................................................................................. ...................................... 4
2.3 Maintenance instructions......................................................... ...................................... 5
3. General description............................................................................ ...................................... 6
4. Front view of control panel................................................................. ...................................... 6
5. Programming guidelines.................................................................... ...................................... 7
5.1 Measurement Cycle ................................................................ ...................................... 8
5.2 Parameter Entry ...................................................................... ...................................... 8
5.3 Calibration Procedure.............................................................. ...................................... 9
5.4 Solids Input.............................................................................. .................................... 10
5.5 Change Frequency.................................................................. .................................... 10
5.6 Select Configuration ................................................................ .................................... 11
5.7 Selection of Foreign Language ............................................... .................................... 12
5.8 Reading Error Messages......................................................... .................................... 13
Error Messages ....................................................................... .................................... 13
6. Putting into operation......................................................................... .................................... 14
6.1 Calibration ............................................................................... .................................... 14
6.1.1 2-point-calibration:(usually sufficient) ...................................... .................................... 14
6.1.2 Multipoint calibration................................................................ .................................... 15
7. Inputs and Outputs ............................................................................ .................................... 19
7.1 Control Inputs .......................................................................... .................................... 19
7.2 Signal Outputs......................................................................... .................................... 19
7.3 Analog Output ......................................................................... .................................... 19
8. Adjustment ranges of concentration.................................................. .................................... 19
9. Terminal assignments ....................................................................... .................................... 20
10. Connecting assignments of probe plug, -socket and extension cable ................................... 20
11. Serial interface CUM 740 (Option) .................................................... .................................... 21
12. Special version “2 sensors” ............................................................... .................................... 22
13. Technical data ................................................................................... .................................... 24
Annex ................................................................................................ .................................... 26

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1. Safety Information / Sicherheitshinweise / Informations de securité
GB
lOnly authorized personnel is allowed to carry out installation, putting into operation,
handling, maintenance and repairs applying the relevant safety rules for mechanical
engineering and electrical engineering especially norm EN 292.
NOTE: Improper handling may cause personal injury
or material damage!
lThe declaration of conformity is only with reference to the measuring transformer
and not its assembly.
D
lInstallation, Inbetriebnahme, Handhabung, Wartung und Reparatur darf nur von
autorisiertem Fachpersonal ausgeführt werden. Anzuwenden sind hierbei die
einschlägigen Sicherheitsrichtlinien für Maschinenbau und Elektrotechnik,
insbesondere die Norm EN 292.
ACHTUNG: Durch unsachgemäße Handhabung können Personen- und
Sachschäden entstehen!
lDie Konformitätserklärung bezieht sich nur auf den Meßumformer und nicht auf
dessen Montage.
F
lInstallation, mise en service, manipulations, entretien et réparation doivent être effectues
que par des techniciens qualifiés. Les instructions de sécuritémachines et
électrotechniques doivent être appliquées, et tout particulièrement la norme EN 292.
ATTENTION: Des manipulations inappropriées peuvent entraîner des
dommages matériels et corporels!
lLe déclaration de conformitése réfère seulement au systéme de mesure
et non àson montage.

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2. General information
2.1 Assembly instructions
•The measuring location must allow a representative measurement.
•We recommend to equip the system with an additional protective roof against direct
weather factors (e.g. deposition of snow).
•Holding devices must ensure that the weight of the device (approx. 5 kg) can be picked
up without vibrations.
•Install the system at a location which can be easily accessed in order to avoid danger to
operating personnel (e.g. at putting into operation, maintenance and cleaning).
•The probe must be made easily accessible as well.
•The construction of the device must be secured with 1A.
•Any cable connections have to be laid in a manner that prevents mechanical damages
and disturbances by other cables.
•The load capacity of the probe cable is maximally designed for the probe with probe
weight and screen grid.
•The probes are measuring technical devices. Please note that the measuring windows
cannot be damaged, e.g. at the built-in version by weld beads in the pipeline.

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2.2 Functions
NOTE: For a correct functioning of the device please proceed according to the operation
instructions
•In the annex of this manual there is a blank which can be used to fill in by hand all
parameters specific to measuring location (important e.g. in case of loss of data).
•All adjusted parameters are battery-buffered. The battery-life is approx. 5 years.
•In the terminal cabinet, there are all fuses of the measuring transformer (refer to item 9.,
“terminal assignments“)
•Note that generally for all probe types strong scrapers and heavy contamination of the
measuring windows may impair the measuring ability.
•ATTENTION!
Start the device only when the probe plug is connected and screwed!
Plugging in or out of the probe only when the device is off!

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2.3 Maintenance instructions
Every four weeks:
Cleaning of the probe:
Remove rough deposits at the cable with a cloth.
Clean the soiled probe with a brush and soap-suds.
ATTENTION: Fact is that the measured value may be impaired by heavy scratches or damages
at the measuring windows.
The cleaning cycle may be extended depending on application (experience)
Yearly jobs:
General function test:
Electronics:
Check probe calibration.
(Battery buffer: Durability of the battery = 5 years)
Tighten cable terminals and control their position.

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3. General description
The CUM 740 is controlled by a 16-bit-microcontroller and allowsthe following functions:
lDetection and processing of measured values
lSpecial menu-driven routine with an alphanumeric display
lMonitoring of the system and probes
lStorage and control of user parameters
All user parameters such as measuring range, alarms, cleaning intervals and adjustment of output
signals are fed in a menu-driven routine and stored in a battery-buffered memory.
The 6 position keypad is used to enter program parameters and to move horizontally and vertically in the
menus on the display. During the measurement cycle, the numeric results are shown on an LCD-display
and at the same time on an LED-display which can be read from a longer distance.
LEDs are integrated in the keypad to show different states of the system, control and outputs
4. Front view of control panel
12
34
1 = LED-Display
2 = LCD-Display
3 = Keys for operation: 4 = Control LEDs:
M - for the main routine LED 1 (M) Alarm A
“MEASUREMENT”LED 2 (CE) Alarm B
CE - for backwards movements in the submenu LED 3 (
Ö ) Range exceeded
Ö - for backwards movement in the main menu LED 4 ( × ) Below range
- to increase numeric values in the submenu LED 5 (E) Call in error display
× - for forward movement in the main menu LED 6 (R) Operation cleaning program
- for decrease of numeric values in the submenu
E - to confirm main menu items
- to confirm numeric values and parameters 5 = Power switch
- to change the display during the
measurement
R - for adjuasting the calibration factor
5

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5. Programming
The main menu includes the following titles always shown in capital letters:
MEASUREMENT
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY
After the instrument is powered on, it switches automatically into the measuring state. By pressing the
“M“ key you get the main routine MEASUREMENT (same from almost any main routine or sub routine).
If the measurement program is not automatically started after switch on (e.g. if the system has not been
configured yet), press the “M“ key before turn on and until the word MEASUREMENT is shown on the
LCD display.
General:
a) Vertical movement in the main menu is done by the arrow keys ‘Ö‘and ‘ב.
To enter a main item press the “E“ key.
‘בforward movement in the main menu
‘Ö‘backward movement in the main menu
‘E’ enter main routine, continue in each submenu
‘M’ move to the start of the main menu (routine MEASUREMENT).
b) Horizontal backward and forward movement at each selected submenu by using
the “E“ and “CE“keys.
‘E’ forward movement at the submenu
‘CE’backward movement at the submenu
c) Within a subroutine, numerical values can be increased and decreased by continuously pressing
keys ’Ö‘and ‘ב. The selection is accepted by pressing the “E“ key.
‘Ö‘numerical value increase
‘בnumerical value decrease
‘E’ accept value and store it
d) Code no. to get into the submenus: Enter the number “91“.

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5.1 Routine MEASUREMENT / Main Menu
--------------- MEASUREMENT
I
Measured value (mg/l, g/l, FTU, NTU, %, ppm)
I
Analog output (mA)
I
Frequency (Hz)
Function:
Detection, evaluation and display of the probe signal,
of the anaolg current and the probe frequency as well as
setting the alarm switches
Operation:
By once pressing the key “E“ the display for the physical measured value is switched to the
corresponding analog output signal (current) By pressing the key “E“ twice the measured probe
frequency or 505 Hz appear as error display on the LCD display, as well as the corresponding measured
value on the LED display.
Return into the main menu with the key “M“.
Pressing the “K“ key allows the adjustment of the calibration factor (see 5.6, “configuration“).
‘E’selection of display measured value or display analog output and frequency
‘K’adjust calibration factor
‘M’return to main menu
5.2 Routine PARAMETER ENTRY
--------------- PARAMETER ENTRY
I
Measurement range - start (g/l, FTU, NTU, %, ppm)
I
Measurement range - end (g/l, FTU, NTU, %, ppm)
I
Alarm A (g/l, FTU, NTU, %, ppm)
I
Alarm B (g/l, FTU, NTU, %, ppm)
I
Damping (s)
I
Cleaning interval (min)
I
Cleaning period (s)
Function:
- Measuring range - start and end:
Selectable concentration range within a calibration curve, the analog output
(signal current 0-20 mA or 4-20 mA) being assigned in linear manner.
The display (LED and LCD) only indicate values which are higher than half of the
measuring ranges at the start and smaller than double the ranges at the end.
Range start and end values are the same for setting the alarms.
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY

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- Alarm values Alarm A and Alarm B:
Concentration-threshold values for alarm relays. The switch hysteresis is ± 2 % each.
- Response Time (Damping) (1 - 600 s):
The response time sets the time interval period in seconds, by which the probe average signal
(corresponding to the concentration value) can be arithmetically determined. The probe signal is
measured every 0.5 s. The selected value is valid for the actual measurement as well as the
calibration of the probe (see section 5.3).
- Cleaning interval (1 –720 min):
Selection of a time interval (in minutes) for a special cleaning routine (if selected).
- Cleaning period (1 –600 s):
Time period of the probe cleaning process in seconds.
(“Connection of solenoid valve“see annex)
Operation:
Movement through the submenu and selection of numerical values refer to item 5.b) and 5.c) “General“.
5.3 Routine CALIBRATION
------------- CALIBRATION
I
Input of code number (91)
I
Number of measuring points (n)
I
Measuring points 1...n (Hz)
Function:
For calibration the probe signals (measuring points 1...n) which
are measured by media of comparison with known concentration
are detected and stored in any order.
Before deliverytheCUM740 is calibrated at the factory(refer to item 5.6 CONFIGURATION, factory
adjustment). A calibration specific to application is necessary, as far as “standards“(e.g. formazine) for
turbidity is not worked with.
For calibration we generally recommend to set the damping to 2 seconds.
Operation:
- Code number:
Two-digit number. If it is incorrect, the submenu will be left and the main menu routine
MEASUREMENT will be returned to.
- Number of measuring points:
Number of media points for comparison to be used for calibration (min. 2, max. 8).
- Measuring points:
Display of every measuring point number and the detected probe signal (response time / damping
please refer section 5.2, “parameter entry“). Storing of measured value by pressing the key “E“.
(Attention: the previous measured value of this measuring point number is overwritten.)
Return one measuring point by “CE“. Press the key “M“ to return into the main menu.
Attention: Please use for zero-calibration (clear water) a black vessel (bucket 10 ltr.).
Please cover bucket during calibration to avoid artificial light.
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY

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5.4 Routine SOLIDS INPUT
-------------- SOLIDS INPUT
I
Input of code number (91)
I
Measuring point 1...n (mg/l, g/l, FTU, NTU, %, ppm)
Function:
In this submenu concentration values of the media
(known or subsequently detected in the lab) corresponding
to the detected probe signals from routine 5.3 “calibration“
(for the measuring points 1...n) are entered and stored.
Operation:
For movement in the submenu and selection of numerical
values, please refer to section 5.b) and c).
At the end return to the main menu with key “M“.
Setting the 3. digit: Additional to key ‘Ö‘or ‘בpress key ‘E’.
5.5 Routine FREQUENCY
-------------- FREQUENCY
I
Input of code number (91)
I
Frequency 1...n (in Hz)
Function:
At frequency input, the probe signals (see 5.3 “calibration“)
detected for the measuring points 1...n, can be examined
and manually changed if necessary.
Operation:
Movement in the submenu and selection of numeric values
refer to section 5.b) and c) “General“.
At the end return to the main menu with key “M“.
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY

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5.6 Routine CONFIGURATION
-------------- CONFIGURATION
I
Input of code number (91)
I
Probe type
I
Factory adjustment
I
Unit of measure (ppm, mg/l, g/l, FTU, NTU, %)
I
Calibration Factor (± 25 %)
I
Analog output (0-20 mA, 4-20 mA)
I
Alarm A (NC or NO - rest current or operating current)
I
Alarm B (NC or NO - rest current or operating current)
I
Error contact (NC or NO - rest current or operating current)
Function:
- Code number: Two-digit number. If it is incorrect, the submenu will be left and the main menu
routine MEASUREMENT will be displayed.
- Probe type:
Select type of used measurement probe. At present the following standard probes
are available: lCUS 65-A/, -B/, -C/, -D/, -E
lCUS 61 / 62 / 63 / 64
lfree parameters (without probetype-monitoring and detection of pollution)
further probes according to table on page 19 chapter 8
- Factory adjustment:
By pressing both arrow keys at the same time standard parameters are read in (corresponding to
the selected probe type). Please find a table about these standard parameters in the annex of
this manual.
Attention: By entering the factory adjustment the previous stored values are overwritten.
If a calibration specific to media is requested, press the key “E“ and proceed as described under
item 6, “putting into operation“.
- Unit of measure: Select the physical units to measure the concentration. Allowable units are
dependent on each type of probe selected.
- Calibration factor:Linear adaptation factor of the calibration curve at low movements of the
medium being measured. Input limits: ± 25% (is set on 0% when factory
adjustment is selected).
g/l
8,0
calibration factor > 0%
4,0 calibration curve
calibration factor < 0%
2,0
1,0 Hz
8000 4000 2000 1000
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY

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- Analog output: Select if the defined concentration measuring range (refer to 5.2 “parameter
entry“) is to be displayed in a linear manner on a current range of 0-20 mA or
4-20 mA. (Corresponding to the range start is either 0 mA or 4 mA but the end is
always 20 mA.)
- Alarm A and B, contact error:
Select the function of the corresponding relays for NO or NC contact.
Operation:
For movement in the submenu and selection of numerical values, please refer to section 5.b) and c)
“General“. At the end return to the main menu with key “M“.
5.7 Routine LANGUAGE
-------------- LANGUAGE
I
German - English - French - Swedish
- Norwegian - Dutch - Danish - Spanish
(if requested Japanese, Italian, Polish, Finnish)
Operation:
Select the change to a language with keys ‘Ö‘and ‘ב
and press the “E“ key to store.
Return to main menu with key “M“.
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY

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5.8 Routine ERROR DISPLAY
-------------- ERROR DISPLAY
I
Error report
Function:
Error messages MTF software Rev. 4.6:
0 = too high concentration
2 = wrong type of probe
3 = no probe signal
4 = no probe signal / probe contaminated
5 = test calibration
Error text brief description:
0 = too high concentration is displayed if the specified measuring range end (refer to
PARAMETER ENTRY 5.2) is exceeded by more than two times.
2 = wrong type of probe is displayed if the probe connected does not correspond with
the selected type (refer to CONFIGURATION 5.2). (“Free
parameters“without probe type monitoring and dirt detection).
3 = no probe signal is displayed if the measuring transformer does not receive a
frequency signal from the probe (e.g. cable breakthrough).
Error 3 results in a frequency display of 0 Hz independent from
ouput “disturbance“.
4 = no probe signal / probe contaminated
is displayed, if the measuring transformer receives no
frequency signal from the probe and additionally receives a
status message (e.g. contaminated probe window / does not
apply to the thick sludge probe type CUS 64 / CUS 65-E). Error 4 results
in a frequency display of 505 Hz independent from the output “disturbance.“
5 = test calibration is displayed if the calibration frequencies lie closer to each other than 15 Hz
(e.g. if the saved calibration frequencies were overwritten by mistake).
Error message at “free parameters“:- C - measuring range exceeded
- no probe signal
- test calibration
The signal output “error“is only set after a cause of error has been existing for at least 10 s.
Operation:
The error messages can one after another be called up with “E“ and called back with “CE“.
After the last message you will be asked to return into the main menu by pressing the key “M“.
Causes for disturbances in the system can be found at the measuring probe , the measuring
transformer, the cable distance between both units as well as in the range of mains supply. If in a first
putting into operation all application questions are clarified and there are still some disturbances, or
disturbances suddenly appear in a so far duly functionning measurement, you have the possibility to
send the defective unit to our following address(see back page of these Operating Instructions).
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY

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6. Putting into operation
A pre-programmed and adjusted amplifier starts the measuring cycle automatically after being switched
on, a manual setup is not necessary.
The probes CUS 63 and CUS 65-D are delivered with a pre-calibration of 0 - 100 FTU. Please check if
the data in routine “FREQUENCY“is identical to the data of the calibration sheet of probes. If the data is
not identical, please enter the data of the calibration sheet for probes at the routine “FREQUENCY“.
The probes CUS 61 / 62 / 64 und CUS 65-A/, -B/, -C/, -E are pre-calibrated at the factory with SiO2.
A calibration specific to the application is normally necessary.
Note: The probes CUS 64 und CUS 65-E cannot be set up or calibrated in clear water area.
The probe is designed for applications in thick sludge. Representative values can only be
expected, if the lowest calibration point lies at a sludge concentration > 1%. (0.8 % are
possible depending on sludge nature.)
You obtain calibration values close to practice by assigning the raw signal of the probe
(frequency) to the solids determination of the laboratory over a defined period of time (1 week).
To perform this under process conditions, the probe has to be mounted at the pipe.
Often a calibration specific to the medium is carried out by the customer (e.g. with activated sludge of a
wastewater treatment plant). Please refer to the following example:
6.1 Calibration
6.1.1 2-point-calibration: (usually sufficient)
In most cases it is enough to work with a two point calibration, alltough the measurement converter
CUM 740 allows to save up to 8 calibration points.
The two point calibration happens with tap water (1.measurement point) and with the sludge of the
respective application (2.measurement point).
In order to carry out the two point calibration in the menu point „Calibration“the amount of the
measurement points have to be set on 2.
The probe which is to be calibrated will be dipped into a dark covered up bucket filled with tap water and
the frequency is saved with the enter key. (This is not effective for the back-scattered probes CUS 64
and CUS 65-E).
As described the probe is to be installed with the respective application (e.g. aeration basin, sludge pipe)
and the measured frequency saved again with the enter key .
It is to observe, that the measurement value is stabil.
Hereupon the sludge of the application of a representative specimen (1Ltr.) is pulled and the solid
content is determined in the laboratory.
Through the menu point „place“, for the first measurement point, the concentration 0 e.g. g/I (PPM,
mgI/I, %) is put in and for the second measurement point the result of the laboratory predestination from
the sludge specimen (e.g. g/I PPM, mgI/I, %).
Should there be immediatly little deviations to the compared measurements of the laboratory, they can
be simply eliminated through the „calibration factor“(key K).
This means a displacement of the calibration curve of + 25 % or - 25 %.

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6.1.2 Multipoint calibration
Example putting intooperation TS-measurement with CUS65-A:
Setup procedure: For a 4-point calibration you will need about 5 liters of activated sludge and 4
black buckets. The minimum bucket volume for calibration is 2 liters. The first
bucket contains clear water for the zero point. The second contains a diluted
sludge 1:1 (1 liter sludge and 1liter water).The third contains the original sludge.
For the fourth bucket which contains a thickened original sludge you should wait
some time until you see the seperation of water and sludge. Carefully pour out
the water because the bucket should contain a thicker sludge than normal.
To do this you will need about 3 liters of sludge.
After the probe calibration the concentration values will be analyzed in the lab.
Important: During calibration the sludge must be stirred continuously with the
probe in order to obtain a proportionate distribution of concentration.
Start programming: Press and hold key “M“ during powerup test and until the display shows
“MEASUREMENT“.
Note: If the probe signals change too slow on the display, please check at
“PARAMETER“the response time and enter a smaller value.
For calibration a damping of 2 seconds is generally recommended.

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MEASUREMENT
1. Press Ö3x, display shows CONFIGURATION press key E.
Code No.: Ö/×91, press key E.
Type of probe Ö/×CUS 65-A, press key E.
Unit of measure Ö/×g/l, press key E.
Alarm A Ö/×operating- or rest current,
(make or break), then E.
Alarm B Ö/×operating- or rest current,
(make or break), then E.
Error contact Ö/×operating- or rest current,
(make or break), then E.
-> M press key M.
MEASUREMENT
2. Press Ö2x, display shows CALIBRATION press key E.
Code No.: Ö/×91, press key E.
No. of points? Ö/×4 (2 - 8), press key E.
Place probe in bucket 1 and stir, frequency with clear water ∼4000 Hz.
1. Value if zero stable, press key “E“.
Place probe in bucket 2 and stir, frequency with diluted sludge ∼3150 Hz.
2. Value if value stable, press key “E“.
Place probe in bucket 3 and stir, frequency with original sludge ∼2210 Hz.
3. Value if value stable, press key “E“.
Place probe in bucket 4 and stir, frequency with thicker sludge ∼1980 Hz.
4. Value if value stable, press key “E“.

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-> M press key M.
MEASUREMENT
3. Press ×3x, display shows SOLIDS INPUT press key E.
Code No.: Ö/×91, press key E.
1. Value Ö/×0.00 zero-value, press E
x.xx g/l 0.00 g/l
2. Value Ö/×1. lab-value, press E
x.xx g/l e.g. 3.5 g/l
3. Value Ö/×2. lab-value, press E
x.xx g/l e.g. 6.3 g/l
4. Value Ö/×3. lab-value, press E
x.xx g/l e.g. 8.5 g/l
-> M press key M.
MEASUREMENT
4. Press ×1x, display shows PARAMETER ENTRY press key E.
Range start Ö/×Value, press key E.
x.xx g/l
Range end Ö/×Value, press key E.
x.xx g/l

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Alarm A Ö/×Value, then press E.
x.xx g/l switch value e.g. 5.6 g/l
Alarm B Ö/×Value, then press E.
x.xx g/l switch value e.g. 8.5 g/l
Damping x s Ö/×1 - 600 s, press key E.
e.g. 5
Cleaning interval Ö/×1 - 720, press key E.
xxx min Relay-interval time
Cleaning period Ö/×1 - 600, press key E.
xxx s Relay-active time
-> M press key M.
MEASUREMENT press key E.
MTF - Display normal
5.88
Meas. value
5.88 g/l
During the measurement cycle
the actual current output can be
shown by pressing key ‘E’ once.
16.6
Analog output
16.6 mA
During the measurement cycle
the actual probe frequency and
the value belonging to it can be
displayed by pressing the key
‘E’ twice.
5.88
Frequency
2323 Hz

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7. Inputs and Outputs
7.1 Control inputs (+24V)
l24 V DC „IN“(terminals 24/25): Freezing of the measurement (The measurement is
interrupted and the currently displayed value is “frozen“.)
For control of 24 V DC „IN“you can use Ua(+24V, terminal 26).
Attention: Therefore terminal 27 (0V) has to be connected with terminal 24 (0V).
7.2 Signal outputs (switch contacts)
l“Alarm A“: Actuates exceeding or below limit value
l“Alarm B“: Actuates exceeding or below limit value
l“Hold”: Measurement interruption, values on hold
l“Error”: Error display at operation menu
l“Cleaning”: Switch contact for probe cleaning
The switch contacts are designed for DC 30 V / 1 A or AC 230 V / 2 A.
7.3 Analog output (I-1)
0/4 mA = Measurement range - start
20 mA = Measurement range - end (see 5.2, “Parameter entry“/function)
Configuration of analog output (see 5.6, “Configuration“/ analog output)
Note: Resistance max. 500 Ω
8. Adjustment ranges of concentration
The measuring range (item PARAMETER ENTRY) can be defined within the following limits,
dependent on which probe type and what kind of physical unit have been selected at item
CONFIGURATION:
Type of probe mg/l, ppm g/l FTU %
1. CUS 61 / 65-A (SAM / SAD) 100 - 100 000 0.1 - 100 0.01 - 10
2. CUS 62 / 65-C (SAV) 0.3 - 400 0.03 - 40
3. CUS 63 / 65-D (SSN) 1 - 5000 0.5 - 1000
4. CUS 64 / 65-E (SRH) 1.0 - 1000 0.1 - 100
5. CUS 65-B (SAH) 0.3 - 400 0.03 - 40
6. fr. Par. 0.1 - 10000 0.1 - 1000 0.02 - 5000 0.01 –100