SAFETY PRECAUTIONS
Only qualified person should operate, install and assure the maintenance.
All International and European recommendations on electrical installation should be applied.
• The device may only be connected to supply power, which complies with the specifications included in the technical data.
• The device must be disconnected from all sources of power during installation and maintenance work.
• The device may only be operated under the conditions specified in the operating instructions.
FUNCTIONS - DESCRIPTION
The turbidity-measuring device determines the turbidity of liquids using the light absorption and scattered light measuring method.
The inline measuring cell at the sensor set makes use of two IR transmitters and one IR receiver in pulsating light mode (IR mea-
suring method according ISO 7027). The interconnected BAMOPHOX TUR measuring amplifier (option) analyses the 4 to 20 mA
signal generated by the sensor set.
MOUNTING
- The fixture must be installed
vertically
. – Best installation is the mounting in an ascending pipe with slow down section 600 mm
in front and 400 mm behind the turbidity-measuring device.
- The sensor fixture must be completely filled with liquid during the performance of measurements.
Install to the vertical portion of a siphon trap if necessary.
- Air bubbles distort measurement results.
- Glass windows must be clean – clean them at regular intervals as required.
SET UP – DISPLAYS
The sensor set consists of a receiver module with microprocessor-controlled analysis electronics and two emitter modules.
The sensor set generates a 4 to 20 mA output signal in accordance with the following diagram. Measuring ranges are selected with
the help of the DIP switches on the receiver module.
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Note:
The tubidity measuring instruments are calibred with the internationally
specified standard suspension Formazin.
The indication takes places thus not in form of the measured light intensity, but
as concentration of the Formazin calibration suspension.
During the measurement with any liquid, this means thus that the liquid
concerned causes the same light scattering as the standard suspension of
the indicated concentration.
Measured values of other turbidity measuring instruments, wich use other
calibration suspensions and measuring angle, cannot be compared direcly
with those with Formazin calibrated measuring instruments.
Signal 4-20 mA
FNU
Turbidité hors échelle
T
DIP-switch
range Set-up
Terminals
Calibration
potentiometers
Receiver module PCB
Over range
In case of measure out of
the rang, the 4-20mA signal
is froze to 22mA
Indication
Green LED = 1Hz blinking
Ready, measuring in operation
Green LED = permanent ON
Ready, measuring not in operation
Green LED = OFF
No power supply, or defective
Fault indication
Red LED = ON
Measuring circuit faulty, (short circuit, or broken)
(court circuit ou rupture)
*) DIP5 and 6
= not connected / no function
**) Armatures with nominal diameter > DN 65
Measuring range
DIP1
DIP2
DIP3
DIP4
DIP5* DIP6*
MB1 = 0.1... 50 FNU
OFF
OFF
OFF
ON
NC
NC
MB2 = 0.1...100 FNU
ON
OFF
OFF
ON
NC
NC
MB3 = 0.1...200 FNU
OFF
ON
OFF
ON
NC
NC
MB4 = 0.1...500 FNU (**300)
ON
ON
OFF
ON
NC
NC
MB5 = 100...1000 FNU
OFF
OFF
OFF
OFF
NC
NC
