SCA100T Series
The equation of fitted 2
nd
order polynome curve for sensitivity compensation is:
Scorr
= −
0.00011*
T
2
+
0.0022 *
T
+
0.0408
Where:
Scorr:
T
2
nd
order polynome fitted to average sensitivity temperature dependency curve
temperature in °C
The calculated compensation curve can be used to compensate the temperature dependency of
the SCA100T sensitivity by using following equation:
SENScomp
=
SENS
* (1
+
Scorr
/ 100)
Where:
SENScomp
SENS
temperature compensated sensitivity
Nominal sensitivity (4V/g SCA100T-D01, 2V/g SCA100T-D02)
The typical offset and sensitivity temperature dependency after external compensation is shown in
the pictures below.
Temperature dependency of externally compensated
SCA100T offset
1
0.8
0.6
offset error [degrees]
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-40
-20
0
20
40
Temp [°C]
60
80
100
120
Average
+3 sigma
-3 sigma
Figure 6.
The temperature dependency of an externally compensated SCA100T offset
Temperature dependency of externally compensated
SCA100T sensitivity
1
0.8
0.6
sensitivity error [%]
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-40
-20
0
20
40
Temp [°C]
60
80
100
120
Average
+3 sigma
-3 sigma
Figure 7.
The temperature dependency of an externally compensated SCA100T sensitivity
VTI Technologies Oy
www.vti.fi
Subject to changes
Doc. nr. 8261800
8/18
Rev.A
VTI [ VTI TECHNOLOGIES ]
