A-96.250.511 / 091120
AMI Turbiwell
Product Description
12
Measuring
Principle
Nephelometric system: A water sample colored by dissolved sub
-
stances is a homogeneous system that only attenuates radiation
passing through the sample. A water sample containing undissolved
substances attenuates radiation and, additionally, the insoluble parti
-
cles scatter the radiation unequally in all directions.
To obtain the turbidity value of the sample, the diffuse radiation is de
-
termined at an angle of 90°.
The AMI Turbiwell uses a non-contact turbidimeter to avoid fouling of
optical surfaces.
The light beam of the LED (light emitting diode) impinges the water
surface and is refracted. At an angle of 90°, the detector measures
the incoming, scattered light.
The barrier avoids measurement errors due to light reflections.
Depending on the model, the LED emits light with a wavelength of
860 nm (near infrared LED) according to ISO 7027 or in the range
from 400 to 600 nm (white LED) as an approved alternative method
to US EPA 180.1.
On-line
Operation
The sample enters at the sample inlet [G]. The constant head [H]
guarantees a constant sample flow into the measuring chamber [J],
and air bubbles are removed. Excess sample overflows directly into
waste 1 [I]. The sample flows into the measuring chamber, fills it, and
then flows via overflow [F] into waste 1. The LED beam impinges con
-
tinuously on the calm surface.
A
B
C
LED
Sample
Light beam
D
E
F
Barrier
Detector
Drain
C
D
A
B
E
F
Содержание AMI Turbiwell
Страница 1: ...Operator s Manual Firmware V6 23 and higher AMI Turbiwell A 96 250 511 091120 ...
Страница 35: ...A 96 250 511 091120 AMI Turbiwell Installation 35 Degasser G B C Degasser sample inlet Drain Waste B G C ...
Страница 108: ...A 96 250 511 091120 AMI Turbiwell Notes 108 12 Notes ...
Страница 109: ...A 96 250 511 091120 AMI Turbiwell Notes 109 ...
