ITM Spanish Presentation 10-13-2011

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Anderson Instrument Company8/15/2013

AndersonInstrument Company, Inc.

Medicin de Turbidez

Alex Araujo

Gte. Regional
http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/


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Turbidez: ?Que es?

Normas Internaciones de medicin de turbidez

Unidades de medicin

Tcnicas analticas de medicin

Diseo de equipo bajo la norma ISO 7027

Propiedades y caractersticas que influyen la medicin

Calibracin de instrumentos

Especificaciones y funcionamiento de turbidmetros Anderson

Resume de Capacitacin
http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/


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Turbid ez -Qu es?

.

La turbidez es una caracterstica ptica o propiedad de un lquido, queen trminos generales describe la claridad u opacidad del lquido.

La turbidez no tiene que ver con el color, sino que se relaciona mscon la prdida de transparencia debida al efecto de partculas en

suspensin, material coloidal, o ambos. Una falta de turbidez resultaen la pureza ya que es, en parte, el efecto de estos diversos materialesen suspensin sobre la luz que atraviesa el lquido.


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Visible light

wavelength

radiatedpower

La longitud de onda de la radiacin visible: 400...700 nm.

Influencia del color


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Agua de Llave Leche Descremada Cola

Comparacin de Turbidez


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Existen diferentes normas vigentes con los lineamientos para ladeterminacin de turbidez en la calidad del agua, tanto internacionales

como nacionales :ISO 7027. (1999). Water quality - Determination of turbidity.

DIN 38404-10. (1995). German standard methods for the examination of water,

waste water and sludge.ASTM D1889-00. Standard test method forturbidity of water.

Method 180.1 USEPA: Determination of turbidity by nephelometry.

NMX-AA-038-SCFI-2001:Anlisis de agua - determinacin de turbiedad enaguas naturales, residuales y residuales tratadas.

NOM-127-SSA1-1994: Salud ambiental, agua para uso y consumohumano. Lmites permisibles de calidad y tratamiento a que debe

someterse el agua para su potabilizacin.

NORMAS


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Units of Measure of Turbidity:

NTU - Nephelometric Turbidity Units (only 90 degree scattered light

method)

EBC European Brewing Convention (equivalent to TE/F)

FTU Formazine Turbidity Units (Scattered light method)

FNU Formazine Nephelometric Units (independent of

measurement angle)

Unidades de medicin


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La unidad nefelomtrica de turbidez, (UNT) expresada habitualmentecon el acrnimo NTU del inglsNefelometric Turbidity Unit, es una

unidad utilizada para medir la turbidez de un fluido.

Corresponde con una concentracin del producto utilizado como patrn

llamado Formacina, que es una solucin que se puede crear utilizando

Sulfato de Hidracina y Hexametilentetraamina en unas proporciones

conocidas para formar el patrn de turbidez .

Suspensin Patrn de Formacina: Se prepara de la siguiente forma: a)

Solucin 1: disolver 1 g de sulfato de hidracina ( MUY PELIGROSO )

en agua destilada y dilyase hasta 100 ml.

El instrumento usado para su medida es el nefelmetro o turbidmetro,

que mide la intensidad de la luz dispersada a 90 grados cuando un rayo

de luz pasa a travs de una muestra de agua.

Patrn Formacina. Qu es?
http://es.wikipedia.org/wiki/Turbidezhttp://www.venturemeasurement.com/http://es.wikipedia.org/wiki/Nefel%C3%B3metrohttp://es.wikipedia.org/wiki/Nefel%C3%B3metrohttp://es.wikipedia.org/wiki/Turbidezhttp://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/


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Unidades de medicin ISO 7027
http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/


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Tcnica Analtica de Medicin

Nefelometra: Tcnica analtica basada en la dispersin de la luz por partculas

en suspensin en el seno de una disolucin, midiendo el haz de luz en la

direccin que forma un ngulo recto (90).

Turbidimetra: Tcnica analtica basada en la dispersin de la luz por

partculas en suspensin en el seno de una disolucin, la cual mide la

disminucin de la transmitancia del haz de luz al atravesar la muestra.

Big particles: > 0,1 m

Small particles: < 0,1 m


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The 90 signal is almost completey independent to the particlesize or color and is mostly affected by particle quantity.

The forward scattered light (11...25) is mostly affected by theparticle size and quantity.

TAMAO Y CANTIDAD DE PARTCULASANGULO DE MEDICIN
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Los instrumentos actual y comnmente utilizados son los turbidmetros,

que emplean un mtodo cuantitativo y deben cumplir los siguientescriterios en el diseo ptico:

La longitud de onda de la radiacin incidente debe ser de 860 nm. La fuente de

luz puede ser lmpara de tungsteno; diodos (leds) lser.

El ancho de banda espectral debe ser menor o igual a 60 nm. La convergencia de

la radiacin incidente no debe exceder 1,5 en turbidmetros de radiacin difusa

y u o 2,5 en turbidmetros de radiacin atenuada.

El ngulo de medicin entre la radiacin incidente y la radiacin difusa debe ser

de 90 2,5 en turbidmetros de radiacin difusa y u o 0 2,5 en turbidmetrosde radiacin atenuada.

La distancia recorrida por la luz incidente y dispersada dentro del tubo de

muestra, no debe exceder 10 cm.

DISENO DE EQUIPO: NORMA ISO 7027


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Cantidad de partculas

Tamao de las partculas

Longitud de onda de luz utilizada

Geometra de las partculas

Indic de refraccin de las partculas

Presencia de burbujas de aire

PROPIEDADES DEL PRODUCTO QUEAFECTAN LA MEDICIN DE TURBIDEZ


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All scattered light measurements are calibrated acc. to the Formazinestandard.

This standard was established in 1926. Instruments must becalibrated to Formazine standards and produce repeatable values.

Precondition: They must be calibrated utilizing the formazinestandard!

Calibration of scattered light measurements


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Anderson Turbidity Products

ITM-3Backscatter (reflection)

>2000 NTU

ITM-490 scattered light

0

5000 NTU


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Anderson ITM-3

Backscatter Turb id i ty Mon i tor


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Anderson Instrument Company

ITM-3 Turbidity Monitor

8/15/2013

Suitable for high turbidities

Media with a turbidity of at least

2000 NTU (ca. 6 %)

Product phase separation (e.g.

skimmed milk

milk)

Yeast harvest (process automation

in breweries)

Phase separation in cleaning

process

Functional principles: Backscatter (reflection) principle


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Sender Empfnger

Lichtwellenleiter

MediumPartikel

Functional principles: Backscatter (reflection) principle

ITM-3

Infra-red LED emits light intomedia through the sapphire

lens

Receiver measures amount

of light reflected back by

particles suspended in the

media

Generates signal that is

proportional to the amount

of particles = relative

turbidity

Transmitter

IR-LED

Receiver

photo diode


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ITM-3 Techn ical Featu res

-Measuring range starts at 2000 NTU

-Display for indication and programming

-4-20mA output assignable to 5 ranges

(10,20,50,100,200)

-DC Switched output adjustable 0- 200-Adjustable dampening 0,1,3,6,13, and 25sec

-One unit with transmitting beam, and

receiver-no need for any other parts

- 2 M12 connectors(1 needed for power withanalog output)

- 3-A


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ITM-3 Piping Ins tal lat ion

Pipe must be filled! Air bubbles adulterate measurement


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Analyt ical Ins trum entat ion

Product-to-water transitions

Water-to-product transitions

Product-to-product transitions

CIP Rinse monitoring

Effluent Monitoring

Filter Monitoring

Yeast harvest control

Applications


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ITM-3L ITM-3AViscous Products

Ice cream mix

yogurt

Low velocity flow

All other applications


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Anderson Instrument Company8/15/2013September 2010 Sales Workshop

ITM-3 Specif ic ation s


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Anderson ITM-4

4 Beam Turbid i ty Meter


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ITM-4 How Does it Work?

4-beam alternating light

Emitter 1 activeReceiver 1 is measuring transmission light

Receiver 2 is measuring scattering light

Emitter 2 activeReceiver1 is measuring scattering lightReceiver 2 is measuring transmission light

5 x Repetition = 20 Values

Measurement angle for

transmission light according

to ISO 7027: 90

Anderson ITM-4
http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/


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wave length 860 nm (colorindependent)

4 ranges selectable via display orvia digital input

switchable between NTU and EBC

Output 420 mA

Switch output 24 V / 50 mA max.

High repeatability < 1 % of f.s.

Optics: sapphire or quartz

ITM-4 Technical Features


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ITM-4 Piping Ins tal lat ion

Pipe must be filled! Bubbles and air adulterate measurement


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11 preset ranges, any 4 can be assigned for remote selection via 24Vdc

Decoupled input

4-20 mA output (4-wire)

1 24VDC switched output, referenced to ground of power supply

On-board, backlit LCD display, 2 lines x 8 digits

2 M12 connectors, 1 for power and output, 1 for switching and remote

range selection

3A Compliant

Alternating beam method compensates for fouling of lens

860 nm wavelength (color independent)LED light source provides longer life and less expensive replacement cost

Must allow 5X the pipe diameter of straight pipe (upstream) and 2X

(downstream)

Specifications of the ITM-4


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-Product standardization and quality control oflow turb id i tymedia-Control of separator speed based on solids starting to appear in

discharge stream

-Filter monitoring where solids starting to appear in downstream fluid

indicates a failed filter

-Waste water control

-Yeast dosing in a brewery

-Bottled water for QC

-COW (Condensate of whey) water

Chill media monitoring

ITM-4 App l icat ions

2011 Distributor Sales Workshop


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ITM-4-Cost of ownership

- LEDs longer life and less expensive versus tungten lamps

-Non color dependent

- ITM-4 features LED wave length

-On board display and transmitter

- Lower install cost over remote panel units.


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ITM-4 Specif ic ation s


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Anderson Instrument Company

Questions ?

http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/http://www.venturemeasurement.com/

Documents

ITM Spanish Presentation 10-13-2011