Cylinder Pressure Sensor0 pages

Pressure
Cylinder Pressure Sensor
Type 6351A
for Continuous Monitoring
Sensor with M5 mounting thread and swivel nut designed with
optimum service life for continuous cylinder pressure monitoring in diesel and gas engines. Thanks to its very small size, it
is particularly suitable for compact engines where there is only
a limited amount of space available for mounting a sensor.
Because of its very high long term stability and low thermal
shock, this sensor is suitable for demanding monitoring and
control tasks.
•t Very small size
•t Easy mounting
•t Long service life
Description
The piezoelectric sensor is connected to the charge amplifier
by an integral cable. The small but very robust sensor can be
used both for performance evaluation and determining the
knock limit on gas engines. Because the time constant in the
charge amplifier is short, a stable output signal is ensured, even
during rapid changes in engine load and engine speed. The life
expectancy of the sensor has been designed so that an average
service life of >16 000 hours can be achieved in a 4-stroke
engine running at 1500 rpm.
6351A_000-703e-09.08
Application
This sensor is especially suitable for fast running diesel and gas
engines; the very small size permits the sensor to be incorporated into engine components (e.g. mounting in the gas injection
valve). The sensor is not suitable for slow running 2-stroke
engines or engines using heavy fuel oil.
Technical data
Measuring rangett
t Ranget
bart
Sensitivitytt
t Range I (± 0,5%)t
mV/bart
Overloadt
bart
Linearityt
% FSOt
Sensitivity to accelerationt
bar/gt
Operating temperature ranget
t Sensort
°Ct
t Connector with charge amplifiert °Ct
Thermal shock at 1 500 rpm,
t pmi = 9 bart
bart
Change in sensitivity
t 200 ± 50 °Ct
%t
t 200 ±50 °Ct
%t
Frequency range (–3 dB)t
Hzt
Output voltage (with 1 mA load)
t max.t
Vt
t min.t
Vt
Signal spant
Vt
Zero pointt
Vt
Supply voltaget
VDCt
Output impedancet
Ωt
DIN connectort
M12x1t
Weightt
gt
Tightening torquet
N·mt
Connectort
8 pint
0 ... 250
15
300
≤±1%
0,001
–50 ... 250
–10 ... 85
≤±0,5
≤±2
≤±1
0,032 ... 20 000
4,4 ... 5
>0
4
1 ... 1,1
7 ... 32
100
IP67
140
2
M12x1
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This information corresponds to the current state of knowledge. Kistler reserves
the right to make technical changes. Liability for consequential damage resulting
from the use of Kistler products is excluded.
©2008, Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland
Tel. +41 52 224 11 11, Fax +41 52 224 14 14, info@kistler.com, www.kistler.com