How The Vetscan Ua Works - Zoetis VetScan UA User Manual

How the VETSCAN UA Works

The UA analyzer is composed of optical-electronic sensor system, mechanism and I/V converter
(Fig. 4)
Optical-electronic sensor system
Lamp Photoelectric cell
Sample/Test Strip
I/V Converter
Strip Tray/Carriage
CPU
Power
Display Printer
Fig. 4
The optical-electronic sensor system consists of a light source and a light receptor. The light
from the light source falls on the reagent pads on the strip. The absorbance and reflectance vary
with the color development of reagent pad. The degree of color development is proportional
to the concentration of analyte in the urine. If the color of reagent pad is darker, more light is
absorbed and less light is reflected, and vice versa.
The reflected light is transmitted into the optical-electronic sensor system where the optical
signals are transformed into electric signals. Then, the electric signals are transformed by I/V
converter, then processed by CPU.
VETSCAN UA USER'S MANUAL | 9