13
8011703/XF49/V3-1/2019-09| SICK
O P E R A T I N G I N S T R U C T I O N S | VICOTEC320
Subject to change without notice
PRODUCT DESCRIPTION
3
3.5
Layout and function
Fig. 3: Layout of measuring device components
3.5.1
Functional principle
The VICOTEC320 is a sensor system for continuous measurement of NO, NO
2
and CO
(option) concentrations as well as visibility and temperature in road tunnels.
The following functional principles are used:
●
NO, NO
2
: DOAS (Differential Optical Absorption Spectroscopy)
●
CO: Electrochemical cell
●
Visibility: Transmission measurement with blue LED
1
Reflector
2
LED matrix to signal automatic beam tracking
3
Sender/receiver unit
4
Dust protection tube
5
Connection unit
6
Plug connections
