Datasheet

KELAG Künzli Elektronik AG Telefon [phone]
Ringstrasse 5 Fax [phone]
Ch-8603 Schwerzenbach E-Mail [e-mail]
Schweiz / Switzerland www.accelerometer.ch/en
Revision January 2011 We reserve the right to modify this specification without prior notice
1)
Repeatability:
maximum offset occurring
with position change after return to initial
position (corresponds to achievable
precision,
including temperature hysteresis
after temperature compensation and
linearization).
2) Cross axis sensitivity: maximum error
occurring with (additional) inclination or
acceleration from another direction than
the measuring plane
3) Supply stabilized
4) Measuring range: Trigonometric function:
angle = arcsin






−
ySensitivit
(Offset) 2,5Vout
(paste values without units)
5) Typical values;
6) Long term stability: calculated values
from HTB tests. Test results available at
request.
7) Cable is specified for -15°C for dynamic
and -30°C for static applications
8) In 0° (horizontal) position the proof-
mass (pendulum) is bending down
(earth's gravitational force)
If the sensor will be turned 90° to the
side then the output will be nominal
2,5V
Single Axis Acceleration Sensor
KAS901- 05 (Z-axis
8)
)
The sensors are based one an advanced “bulk micro machined” technology. The three dimensional structure of
these sensors comprise a pendulum made of mono crystalline silicon. The pendulum is hermetically enclosed
between two silicon discs. From this construction results a long term stable, high resolution und shock resistant
sensor. A gas damping prevents overshooting and interfering resonance oscillation. An ASIC measures the
capacitive change caused by the movement of the pendulum.
• senses in positive and negative direction
• static and dynamic acceleration measured
• high repeatability up to 0,05% over range
• high resolution: up to 0,005% over range
• shock resistance of the pendulum min. 50’000g
• temperature range -30 .. +85°C
• passive temperature compensation
• small, solid brass housing with fixing holes
• rugged PVC cable
• large output span: 0.5 .. 4.5V output over measuring range
• power supply requirement: 7... 36 VDC, stabilized
red
brown
orange
black
+7... 36VDC
Out X
Out Y
0V
Shield/Housing
Fixing holes for M3 cylinder head screws
Outputs have no protection
against polarity reversal
Height 12mm
27.0
8.0
35.0
25.0
060721-9011011
X
KAS901-xxX
Inclination
Y
Parameter Conditions
KAS901-04
Unit
Measuring range
4)
+/- 1,7
+/- 90
G
°
Repeatability at 0°
(horizontal position)
1)
at 0...40°C,
20°C typ
4
0,2
mg
°
Resolution at 0° / 1g DC .. 1Hz 0,2
0,01
mg
°
typ. Offset temperature
dependency
20...60°C 0.6 mg/°
long term stability
6)
10 years
6)
approx. 1,5 mg
Measuring direction
z-axis
8)
Cross axis sensitivity
2)
4 %
damping -3 dB 50 Hz
5)
Operating temperature range -30
7)
.. +85 °C
Shock resistance (Chip) 20’000 g
Output signal V
out
Offset = V
out
in 0°/position
8)
Sensitivity
0,5 .. 4,5
1,3
8)
4
V
V
8)
V/g
Power supply
3)
7... 36 VDC
Other versions
:
• single and dual axis sensors in IP67
housing with cable or connector and
standardized output 4... 20mA, 2...10V and
Modbus
• smaller cases and sensors for higher
temperatures ranges