Brief Operating Instructions

Stamosens CXM750/CXS70# Warning!
These Brief Operating Instructions do not substitute the Operating Instructions!

In particular pay attention to the safety instructions in chapter 1 and to the special notes in the other chapters of the Operating Instructions!

Installation and Wiring

Electrical connection
Terminal assignment

Installation

185 (7.28)
60 (2.36)

DuoVersion:Sensor 1 Sensor 2-33- 30+32+ 29

Shield/31
Schirm

28

24V DC / 100mA

Terminals voltage to ground even when the unit is switched off !!!

I1I2
0/4-20 mA

Klemmen führen auch bei ausgeschaltetem Gerät Spannung !!!

Output /Ausgang

23TxD

270V

22RxD

NO

26+24V

21CTS

25+24V

20

GND

240V

19Shield/Schirm

Input /Eingang

NCCOM

181512961714118516131074F132N1LT 500 mA

Cleaning/ Error/
Hold Alarm 1/ Alarm 2/
GW 2
GW 1
Reinigung Störung

RS232

a0000952

Fig. 3:

Electrical connection transmitter with power supply 80 to 250 V AC

51509391

DuoVersion:
Sensor 1 Sensor 2-33- 30+32+ 29

Shield/31Schirm

28I1
I20/4-20 mA

Supply voltage only 24V DC/AC !!!
Versorgungsspannung nur 24V DC/AC !!!

Output /Ausgang

23270V

22RxD

26+24V

21CTS

25+24V

20

GND

240V

19Shield/Schirm

Input /Eingang

TxD
Relais: Load/Last max. 250V~/2A, 30V=/1ANONC
COM

18

15

12

9

6

17

14

11

8

5

16

13

10

74

Cleaning/ Error/
Hold Alarm 1/ Alarm 2/
GW 2
GW 1
Reinigung Störung

RS232

F132
1

LL+T 2A

a0000953

Fig. 4:

Electrical connection transmitter with power supply 24 V AC/DCtransmitters.

Cleaning unit
FusePE

198 (7.80)

Supply / Netz:
80-250 V~

Relais: Load/Last max. 250V~/2A, 30V=/1A! Note!
The duo version with a second sensor is not available for the CNM750 and CSM750

115 (4.53)
60 (2.36)

145 (5.79)
15 (0.59)

241 (9.49)
212 (8.35)

26 (1.02)! Note!
Make sure to observe the maximum length of the air line tubing (15 m (49.2 ft))
because the power of the cleaning unit compressor is not sufficient to guarantee
reliable cleaning over longer distances.

51509157

24V DC / 100mA• Select a measuring point where representative measurement can be taken.
Do not mount the sensor where medium flow is turbulent and fast-flowing.
• We recommend to fit the transmitter with a weather protection cover (see"Accessories").
• Never carry the sensor by its cable.
• Attach the sensor to a special extension tube. The best fixture is a pendulum frame
which holds the sensor vibration-free.
• Install the system at an easily accessible position to prevent danger for the operating
personnel (during commissioning or when carrying out maintenance and cleaningwork).
• Route all cable connections to prevent mechanical damage and interference fromother lines.
• Install the measuring channels of the sensor in the direction of flow to obtain a selfcleaning effect.
• The activated sludge version of the sensor is equipped with a cleaning unit which
prevents soiling or blocking due to particles by blowing compressed air into themeasuring slit. For other applications with soiling contents, the cleaning unit isavailable as an accessory.
Install the air outflow of the cleaning unit at the narrower slit.

L1NPE

Internal wiringT69 (2.72)

External connections

329 (12.95)

145 (5.71)

15 (0.59)

1A/230V AC
2A/115V AC

198 (7.80)

mm (inch)a0000949

Abb. 1:

3

Transmitter dimensions

1812

L

N

230V AC / 50Hz
or
115V AC / 60Hz

323 (12.72)

Ø 127 (5.0)

a0000951-en

Fig. 5:a0000950

Abb. 2:

Sensor dimensions

Power supply

Transmitter

G1½

mm (inch)

KA215C/07/en/09.08

16

Connection of the cleaning unit

Commissioning

One-point calibration! Note!
One-point calibration is only useful for the clear water sensor. If you are using anactivated sludge sensor, perform a three-point calibration. See chapter "Three-pointcalibration".

Operating keys and their function
The operating keys and the integrated indicator LEDs have the following functions:
KeyKey functionmeasuring” option
H –– “Autoback to the main menu from all sub-menus
in the sub-menu
K – backwards(horizontal, see Appendix,)in the main menu (vertical)
V –– backwards
increase value
in the main menu (vertical)
W –– forwards
reduce value
optionF –– selectadopt value, forwards in the sub-menu (horizontal)
J – selection in the sub-menu

Indicator LED function

ActionAlarm value 1 exceeded

Leave the sensor to rest in the medium for approx. 1 hour.

Alarm value 2 exceeded

Take a sample in the direct vicinity of the sensor.
Write down the sensor frequency displayed at the time of sampling. To do so, press H.
Then press F three times within 4 sec. to display the sensor frequency.

Measuring range exceeded
Measuring range undershot
Retrieve error message

Press H.

MEASUREMENT

Press twice W and confirm with F.

CALIBRATION PTS
Press the W key to set the "99" code and confirm with F.

Use the W key to set the number of measuring points to "1". Confirm with F.

Note!
• Before switching the system on for the first time, familiarize yourself with theoperation of the transmitter. For this, see the "Safety instructions" and "Operation"
chapters.
• The sensor should be left in the medium for approx. 1 hour, so that it can adapt tothe medium temperature.
• The transmitter has already been pre-configured at the factory and starts measuring
automatically when switched on. Due to the different waste water composition, themedia can vary greatly. Therefore, we recommend using an application-specificcalibration for commissioning.

Action

Display

Switch the transmitter on.
Press H.

Press five times W and once F.

Press the W key to set the "99" code and confirm with F.

Use the W or V keys to select the desired unit of measure and confirm with F.

Hold down the W and V keys simultaneously to activate the default setup for theselected sensor type.

!

Note!
The default setup is compulsory for initial start-up, in order to use the correct default
calibration.
Confirm the "Correction factor 0%" function with F.

Use the W or V keys to select the number of measured values for forming the meanvalue and confirm with F.

Press H.

Press three times W and confirm with F.

Press the W key to set the "99" code and confirm with F.

Use W or V to set the 1st measured value to the laboratory value. To set the last digit,
use W or V and simultaneously keep the F key pressed.
After the complete value is input, confirm with F.
Press H.

CONFIGURATION

Press four times W and confirm with F.

Code No.
99

Press the W key to set the "99" code and confirm with F.

Type of sensor
NOx BS 0-30

Use W or V to set the previously noted sensor frequency value.

Unit of measure
mg/l-N

Press H. The one-point calibration is now completed.

Select the configuration for the diagnostic alarm similar to the alarm value setting.

Use the V, W and F keys to set the current date and time (DD.MM.YY hh:mm).
Confirm with F.

Press once W and six times F. Use the V, W and F keys to set the time of the 1stmeasurement (DD.MM.YY hh:mm). If the measurement is to start immediately, set thetime in the past. Confirm with F.
Press H. The system is ready for measurement now.

Code No.
99
1. Value
5.00 mg/l-N

FREQUENCY

Code No.
99
Frequency
4836 HzMEASUREMENT

Three-point calibration
Correct. factor
0%n mean value
10

Alarm Anormally open
Alarm Bnormally open

A one-point calibration is not useful for the activated sludge sensor. Therefore, carryout a three-point calibration:
1.

Take three samples at three times of different nitrate concentration and note down
the displayed frequency at the time of sampling.

!

Note!
The concentrations must differ by 1 mg/l at minimum.

2.

Determine the nitrate content of the samples in the laboratory.

3.

Enter the value pairs of determined concentrations and noted frequencies (in orderof increasing or decreasing concentrations):a. Proceed as with the one-point calibration (see above).
However, enter "3" instead of "1" for the number of measuring points in theCALIBRATION POINTS menu .

Diagnostic alarm
normally open

b. Enter three concentrations in the CONCENTR. INPUT menu.

act. Date/Time

d. After entering the last frequency, return to the measuring mode.
The calibration is then finished.

10.02.02. 11:38
Press H.

CONCENTR. INPUT

Default setup
y: + n:E

Analog output
4-20 mA

Repeat the previous step for alarm value B.

No. of points
1

MEASUREMENT

Use the W or V keys to select the current output and confirm with F.

Use the W or V keys to select the configuration for alarm value A and confirm withF.

Code No.
99

MEASUREMENTMEASUREMENT

Use the W or V keys to select your sensor and confirm with F.

Frequency
4836 Hz

Determine the nitrate content of your sample in the laboratory.

Unassigned

First commissioning!

Display

MEASUREMENT

1. Measurement
01.01.99 00:00
MEASUREMENT

c. Enter the three frequency values accordingly.

!

Note!
It is recommended to create a data table for the values.