SICK DUSTHUNTER SB30

47
OPERATING INSTRUCTIONS | DUSTHUNTER SB30
8014551/1COY/3-0/
2016-08| SICK
Subject to change without notice
START-UP AND PARAMETER SETTINGS 4
 Enter the regression coefficients
There are two options:
– Direct input of K2, K1, K0 in a measured value computer.
– Use the regression function of the measuring system (use without measured value
computer).
In this case, the correlation to the scattered light intensity has to be determined. To
do this, calculate the regression coefficients cc2, cc1, cc0 to be entered in the mea-
suring system from K2, K1, K0.
Using (2) in (1), the result is as follows:
Using (3), the result is as follows:
Now enter the regression coefficients cc2, cc1 and cc0 determined in directory
“Configuration/Application parameters” (see “SOPAS ET menu: Configuration/Application
parameter (example)”, page 44) (set sender/receiver unit to “Maintenance” state and
enter the Level 1 password.
Reset the sender/receiver unit back to “Measurement” state afterwards).
NOTE:
In this case, the regression coefficients set in the sender/receiver unit and the
measuring range set in the MCU (option) may not be changed anymore. On the
LC-Display of the MCU (option), the dust concentration is shown in mg/m³ as
uncalibrated value.
ccc2SL
2
⋅ cc1 SL⋅ cc0++=
(3)
cK2LZSL
20mA LZ–
MBE
-----------------------------
⋅+


2
K1 LZ SL
20mA LZ–
MBE
-----------------------------
⋅+


K0+⋅+⋅=
cc1 2 K2 LZ K1+⋅⋅()
20mA LZ–
MBE
-----------------------------


⋅=
cc0 K2 LZ
2
⋅ K1 LZ⋅ K0++=
cc2 K2
20mA LZ–
MBE
-----------------------------


⋅
2
=
This method allows changing the parameters for the selected measuring range as
desired.
CAN-Bus