Datasheet

KELAG Künzli Elektronik AG Telefon [phone]
Ringstrasse 5 Fax [phone]
Ch-8603 Schwerzenbach E-Mail [e-mail]
Schweiz / Switzerland www.inclinometer.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) Related to sensing element
Two Axis Inclination Sensor
KAS901-51 and -52
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 0,01% over range
• high resolution: up to 0,001% over range
• shock resistance of the pendulum min. 50’000g
• temperature range -30 .. +85°C
• active and 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
KAS901-51 KAS901-52
Unit
Measuring range
4)
+/- 0,5
+/- 30
+/- 1
+/- 90
G
°
Repeatability at 0°
(horizontal position)
1)
at 20°C,
typically
0,25
0,014
0,25
0,014
mg
°
Resolution at 0° / 1g DC .. 10Hz
DC .. 1Hz
0,05
0,003
0,015
0,001
0,05
0,003
0,015
0,001
mg
°
typ. Offset temperature
dependency
8)
20...60°C
-0/+0,066
-0/+0,006
-0/+0,066
-0/+0,006
mg / °C
° / °C
long term stability
6)
10 years
6)
0,62
0,036
0,62
0,036
mg
°
Measuring direction horizontal x-axis x-axis
Cross axis sensitivity
2)
Max. 4 4 %
Damping -3 dB 18 18 Hz
5)
Operating temperature range -30
7)
.. +85 -30
7)
.. +85 °C
Shock resistance Chip 20’000 20’000 g
Output signal V
out
Offset = V
out
in 0° / rest pos.
Sensitivity
0,5 .. 4,5
2,5
4
0,5 .. 4,5
2,5
2
V
V
V/g
Power supply
3)
7... 36 7... 36 VDC
Analog resitive output load Min. 10 Min. 10 kOhm
Analog capacitive output load
Vout to Vdd
or GND
Max. 20 Max. 20 nF
Other versions
in other housings
:
• single and dual axis sensors in rugged
IP67 housing with cable or connector and
standardized output 4... 20mA, 2...10V and
Modbus
• smaller cases and sensors for higher
temperatures ranges