76
8020216/19YN/V3-0/2020-12| 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-3K
Subject to change without notice
9
CONFIGURING
Defining regression coefficients
The “Configuration / Application parameters” directory also contains the “Calibration
coefficients for calculating concentration from scattered light” window. There a set of
coefficients with free choice of coefficients (Set 0) or fixed presetting (Set 1 to 3) can be
selected to convert the received measurand scattered light into a dust concentration (
“Calibration for dust concentration measurement”, page 82
). Select Set 0 when the
application requires calibration of the measuring system or when very accurate measured
values are required. Set 1 to 3 can be used when approximately correct dust concentration
values are sufficient for the application.
Fig. 42: SOPAS ET menu: DH SP100/Configuration/Application parameters (bottom window)
Table 15: Regression coefficient sets overview
9.5.2
Assigning the control unit to the sender/receiver unit
The control unit must be set to the sender/receiver unit to be connected. A malfunction is
reported in case of a mismatch. Assignment must be made after installation when the
setting is not possible at the factory (e.g., when several devices are delivered at the same
time or when the device is swapped later). The following steps are then necessary:
1
Connect the measuring system to the SOPAS ET program.
2
Enter the Level 1 password (
see “Password for SOPAS ET menus”, page 68
).
3
Set the sender/receiver unit to “Maintenance”: Click “Maintenance sensor”.
Fig. 43: SOPAS ET menu: MCU/Maintenance/Maintenance
Set
Regression coefficient setting Typical application
Regression coefficients
Quadratic Linear
Absolute
Set 0
Freely selectable
Any
0
1
0
Set 1
Fixed: For small particle sizes
(on average 2
μ
m)
Usage after cloth filter
units
0
0.5
0
Set 2
Fixed: For medium particle
sizes (on average 5
μ
m)
Application after electro-
filter
0
2
0
Set 3
Fixed: For large particle sizes
(on average 10
μ
m)
Application after pre-
filter (cyclone filter)
0
3
0
The regression coefficients in Sets 1 to 3 refer to dusts with an average density of
2.5 g/cm³, almost spherical particle structure and even dust distribution across the
duct cross-section.
The sender/receiver unit must be connected to the control unit.
