Bosch Rexroth AG
, RE 95156/02.2017
8
PR4
| BODAS Pressure sensor
Characteristics
Characteristics
Output voltage as function of the pressure
The signal output voltage is (up to the nominal pressure)
calculated from the actual pressure as follows:
U
OUT
= (
c
1
×
p+
c
0
)
×
U
S
where
U
OUT
= Signal output voltage
U
S
= Supply voltage (typ. 5 V)
p
= Pressure [MPa]
c
0
= 0.1
c
1
= 0.8 :
p
n
p
n
= Nominal pressure [MPa]
0
p
n
0.96
U
S
(4.8 V)
0.90
U
S
(4.5 V)
0.10
U
S
(0.5 V)
0.04
U
S
(0.2 V)
Upper range for signal range check (SRC)
Lower range for signal range check (SRC)
Values for
U
S
= 5 V
in brackets
Pressure p
Tolerance over temperature, pressure and life time
0
new condition / after life time
p
nenn
p
nenn/2
Temperature
−40 °C
1.10 % /
1.50 %
0.90 % /
1.30 %
0.70 % /
1.10 %
−0 °C
0.70 % /
1.20 %
0.60 % /
1.10 %
0.50 % /
1.00 %
100 °C
0.70 % /
1.20 %
0.60 % /
1.10 %
0.50 % /
1.00 %
140 °C
1.10 % /
1.50 %
0.90 % /
1.30 %
0.70 % /
1.10 %
Pressure
The tolerance for the pressure measurement is given in
% FS = "full scale". FS denotes the sensor nominal pressure
p
nenn
or the usable range. The relative tolerance is depen-
dent on the pressure and temperature, and increases over
the service lifetime. Here, the service lifetime encompasses
the entire lifetime. The tolerances for new parts are statisti-
cally observed with 3 s per manufacturing batch. Delivery of
100 % sorted products is permitted. After lifetime the toler-
ance for new parts can broaden to the values given in the
diagram. Here the given tolerances also represent the 3 s
limit.
