Colormetry CMU 324

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Colorimetric Measurment Principle

colorimetric measurment principle

colorimetric measurment principle

Colormetry CMU 324 monitoring principle

 

In a colorimetric analysis process the ionic and other concentration in water is monitored by allowing a reagent to react against the target ions and others, and monitoring the transmissivity of the resultant coloration for light of a specific wavelength  →    a defined light source is activated to project light into the sample water

The Colormetry replaces this process by an electrical monitoring system and automates the entire process.
●    the analysis device measures the transmissivity of the resultant coloration for light of a specific wavelength
●    it determines the ammount of sent out light which is absorbed by the couloured water sample
●    the unit detects colour-changes and the intensity of a colour; from such informationen the concentration of ions in water can be calculated

applications for colorimetric measurments
●    determination of hardness leackages in the effluent of water softeners with an indicator reacting selective with the ions calcium and magnesium
●    mearument of free chlorine concentration in water with an indicator reacting selective with the free chlorine ions


application of the colorimetric measurment principle in Colormetry divices

application of the colormetric measurment principle in Colormetry devices

Colormetry CMU 324 monitor system 1

determination of water hardness

determination of water hardness

The indicator reacts with Calcium and Magnesium ions
forming a colour complex.

Titration with colour change

soft water   ► water sample is coloured BLUE

hard water  ► water sample is coloured RED

The unit is able to distinguish between BLUE and RED

The unit detects the cholour change
and the intensity of the colour

The unit evaluates the hardness leackage
e.g. in the effluent of water softeners

Only one single indicator is necessary
Limit values are adjustable in the device

adjustable thesholds  [ mg CaCO3 / Liter] :  

1 mg/L  0,05 °dH | 2 mg/L  0,10 °dH |  3 mg/L  0,15 °dH  | 5mg/L  0,25 °dH

 
Colormetry CMU 324 colorimetric principle HE 0
 

monitoring of free chlorine

monitoring of free chlorine

The indicator reacts with Free Chlorine ions
forming a colour complex

Titration with extinction monitoring

the more free chlorine in water the more intensive
the water sample will be coloured

the colour drives from
LIGHT ORANGE  to  DARK ORANGE

The unit evaluates the concentration 
of free chlorine in water

Only one single indicator is necessary over the
measurment range 0-2 mg / Liter

Limit values are adjustable in the device

adjustable tesholds [ mg Cl- / Liter ] :  

0,05 | 0,10 | 0,20 | 0,03 |  0,40 | 0,50 | 0,60 | 0,70 |  0,80 | 0,90 | 1,00 |
1,20 | 1,40 | 1,60 | 1,80 | 2,00

a high and a low threshold can be set

 
 Colormetry CMU 324 colorimetric principle CLE 0

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