31
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
2.2.8 Device check accessories
2.2.8.1 Test equipment for linearity test
A linearity test can serve to check the correct function of transmission measurement (see
Service Manual). In this case, filter glasses with defined transmission values are positioned
in the beam path and the values compared against those measured by the DUSTHUNTER T.
Compliance within the allowed tolerance means the measuring system is working correctly.
The filter glasses with holder required for the check are deliverable as a set including a car-
rying case (see “Device check accessories”, page 124).
2.2.8.2 Adjusting stand for scaling
Adjusting stands are available to check transmission measurement in smoke-free
measuring paths (see “Preparatory work”, page 61) and are fitted with a sender/receiver
unit and reflector in a defined distance from each other and aligned so that the optical axes
match (see “Focussing the sender light beam for transmission measurement”, page 64).
The transmission value determined is set as 100% and serves as standard for mea-
surement in the path containing dust.
2.2.8.3 Zero tube for scaling
The measuring system can also be scaled using a tube with a defined length instead of the
adjusting stand (see “Preparatory work”, page 61). Assembling and aligning the sender/
receiver unit and reflector in a dust-free path are then easier and more precise. We espe-
cially recommend this option when a dust-free environment cannot be guaranteed for
scaling.
The zero tube is closed off with end flaps when not in use so that no dust can penetrate the
tube.
Use the specified check filter set for a check according to US-EPA standard.
To Next Page
Loading...
Need help?
General
