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8024493/AE00/V1-0/2020-09| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100 Ex-2K
Subject to change without notice
PRODUCT DESCRIPTION
3
message is cleared again when the next functional check runs successfully. The control
value is determined with high precision through statistical evaluation of a high number of
intensity changes.
Contamination measurement
For contamination measurement, the receiver optics is swiveled into a control position and
the scattered light intensity measured. The measured value determined and the reference
value defined as factory setting are used to calculate a correction factor. This fully compen-
sates any contamination that occurs.
A value between live zero and 20 mA, proportional to the contamination, is output on the
analog output for contamination values < 40% ; when this value is exceeded, the
“Malfunction” status is output and on the analog output the set error current (
the analog outputs parameters”, page 74
).
Fig. 11: Contamination and control value measurement
Cycle restriction
The measuring system contains wearing parts which are stressed by device functions and
must be replaced after a certain number of traverses in order to permanently guarantee
the ignition protection of the system. A warning message is generated after 12,000
function check cycles (
see “Determining the function check”, page 73
) and an error
message after 15,000 cycles. The measuring system must be sent in between these times
for factory inspection.
Receiving optics in operating position
Receiving optics in control position