SICK DUSTHUNTER T100 User Manual

11
8012428/YWL2/3-0/2016-08| SICK O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER T
Subject to change without notice
PRODUCT DESCRIPTION 2
2 Product Description
2.1 Measuring principle, measured variables
2.1.1 Functional principle
A high performance LED sends light in the visible range (white light, wavelength approx.
450 to 700 nm) through the active measuring path containing particles to the reflector
where it is bounced back to the receiver. A highly sensitive measurement receiver accepts
the signal weakened by particles, amplifies the signal electrically and feeds it to the mea-
suring channel of a microprocessor as central part of the measuring, control and evalu-
ation electronics.
Continuous monitoring of the sender output (partial beam to monitor receiver) registers the
smallest changes in brightness of the light beam sent which then serves to determine the
measurement signal.
Fig. 1: Measuring principle
Measured variables
The measuring system uses transmission (T) as primary optical measured variable. The
other measured variables opacity (O), relative opacity (ROPA), extinction (E) and dust con-
centration (c) are derived from this variable.
Transmission, opacity, relative opacity:
Transmission, opacity and relative opacity are usually specified in percent.
Extinction:
1 LED 4 Active measuring path
2 Concave mirror 5 Monitor receiver
3 Reflector 6 Measurement receiver
1
2
3
4
5
6
TN
I
meas
I
mon
------------
•=
O1T–=
ROPA 1 e
E
D
Do
2D
meas
•
---------------------- -
•
–=
N = scaling constant
I
meas
=light received
I
mon
= monitor signal
D
Do
= stack diameter at the top end
D
meas
=active measuring path
E
1
T
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
log=

SICK DUSTHUNTER T100 Specifications

General

Brand	SICK
Model	DUSTHUNTER T100
Category	Measuring Instruments
Language	English