LP Series Data sheet

Accelerometers
GENERAL PURPOSE, LP SERIES
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High Performance, 1-Axis and
3-Axis Accelerometers
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Small, Low-Cost
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Reliable Packaging with
Screw-Down Mounting
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Factory Calibrated
New
DigCal Option!
Applications
Automotive Testing
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Instrumentation
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Equipment Monitoring
accelerometers
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Standard Package
LP Series
The LP Series accelerometers are low
cost, general purpose, linear acceleration and/or vibration sensors available
in ranges of ± 4 g, ± 10 g, ± 25 g,
± 50 g, and ± 100 g. Common
applications are automotive testing,
instrumentation, and equipment
monitoring. The LP Series sensing
element is a silicon micro-machined
capacitive beam. The capacitive beam
is held in force balance for full scale
non-linearity of less than 0.2 %.
The LP Series offers wide dynamic
range, has excellent frequency
response, operates on a single +5
VDC power supply, and is easy to
interface to standard data acquisition
systems. The scale factor and the 0 g
output level are both ratiometric to
the power supply so the accelerometer
and any following circuitry will track
each other if the supply voltage varies.
Alternatively, by specifying the -R
option, an unregulated 8-30 V power
supply can be used.
The LP Series is offered with a standard 5-pin female connector. The
highly flexible, low-mass cable
prevents disruption of the measurement.
In addition, Crossbow offers its new
DigiCal cable and connector option.
The DigiCal connector allows the user
to read the sensor ID, serial number,
and calibration information using an
I2C bus commonly available on
microcontrollers. This new option
functions as a TEDS or Transducer
Electronic Datasheet, allowing
customers to automatically readout
the sensor parameters upon power up.
Crossbow recommends its new
ACCEL-WIZARD data acquisition
system for use with the LP Series and
DigiCal . The ACCEL-WIZARD data
logger and real-time data acquisition
system is described on page 25. The
ACCEL-WIZARD is a capable highspeed data acquisition system that
works with personal computers and
laptops via RS-232. The new DigiCal
Compared to traditional piezoelectric
LP sensors plug into the ACCELand piezoresistive accelerometer
WIZARD. ACCEL-WIZARD recognizes
technologies, the silicon microthe sensors, their measurement range,
machined sensors offer equivalent perand calibration data. The ACCELformance at a significantly lower cost.
WIZARD and LP Series combination
allows for turn-key test and measurement that can be set up and configured in a matter of minutes.
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Document Part Number: 6020-0001-01
c r o s s b o w t e c h n o l o g y, i n c
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41 daggett drive
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san jose, ca 95134-2109
C
Weight
CXL10LP1
CXL10LP1Z
CXL10LP3
CXL25LP1
CXL25LP1Z
CXL25LP3
CXL50LP1
CXL50LP1Z
CXL50LP3
CXL100LP1Z
±4
± 0.2
500 ± 25
±5
± 0.2
±2
10
DC -100
± 10
± 0.2
200 ± 10
±5
± 0.2
±2
10
DC -100
± 25
± 0.2
80 ± 4
+5
± 0.2
±2
10
DC -100
± 50
± 0.2
40 ± 2
±5
± 0.2
±2
50
DC -100
± 100
± 0.2
20 ± 4
±5
± 0.2
±2
80
DC -100
-40 to +85
2000
-40 to +85
2000
-40 to +85
2000
-40 to +85
2000
-40 to +85
2000
+ 5.0
+ 8.0 to 30
5/axis
+ 2.5 ± 0.1
± 2.0 ± 0.1
> 10 kΩ, < 1 nF
+ 5.0
+ 8.0 to 30
5/axis
+ 2.5 ± 0.1
± 2.0 ± 0.1
> 10 kΩ, < 1 nF
+ 5.0
+ 8.0 to 30
5/axis
+ 2.5 ± 0.1
± 2.0 ± 0.1
> 10 kΩ, < 1 nF
+ 5.0
+ 8.0 to 30
5/axis
+ 2.5 ± 0.1
± 2.0 ± 0.1
> 10 kΩ, < 1 nF
+ 5.0
+ 8.0 to 30
5/axis
+ 2.5 ± 0.1
+ 2.0 + 0.2
> 10 kΩ, < 1 nF
Standard package
Aluminum package
Standard package
Aluminum package
Remarks
± 5%
0°C to 70°C
typical
typical
typical
typical
@25°C
0.75” x 1.875” x 1.00 (1.90 cm x 4.76 cm x 2.54 cm)
0.95” x 2.00” x 1.20” (2.41 cm x 5.08 cm x 3.05 cm)
1.62 oz (46 gm)
2.40 oz (68 gm)
Notes
Sensitivity is ratiometric to supply: Vout = [Vs/2 + (sensitivity x Vs/5 x accel)]. Zero g Output is ratiometric to
supply, proportional to Vs/2. Non-linearity is the deviation from a best fit straight line at full scale.
Transverse sensitivity is error measured in the primary axis output created by forces induced in the
orthogonal axis. Transverse sensitivity error is primarily due to the effects of misalignment (i.e., much of it
can be tuned out by adjusting the package orientation or mathematical compensation). Zero g drift is
specified as the typical change in 0 g level from its initial value at +25°C to its worst case value at Tmin or
Tmax. Specifications subject to change without notice.
Pin
Color
Function
1
2
3
4
5
Red
Black
White
Yellow
Green
Power In
Ground
X-axis Out
Y-axis Out
Z-axis Out
accelerometers
Specifications
Performance
Input Range (g)
Zero g Drift (g)
Sensitivity (mV/g)
Transverse Sensitivity (% Span)
Non-Linearity (% FS)
Alignment Error (deg)
Noise (mg rms)
Bandwidth (Hz)
Environment
Operating Temp. Range (°C)
Shock (g)
Electrical
Supply Voltage (Volts)
Supply Voltage -R option (VDC)
Supply Current (mA)
Zero g Output (Volts)
Span Output (Volts)
Output Loading
Physical
Size
CXL04LP1
CXL04LP1Z
CXL04LP3
Pin Diagram (w/o DigiCal)
1
6
DigCal Connector
(Right Hand British-Telcom)
High Temperature Package
Model
Axes
CXL04LP1
CXL04LP1Z
CXL04LP3
CXL10LP1
CXL10LP1Z
CXL10LP3
CXL25LP1
CXL25LP1Z
CXL25LP3
CXL50LP1
CXL50LP1Z
CXL50LP3
CXL100LP1Z
OPTIONS
-R
-AL
-D
X
Z
TRI
X
Z
TRI
X
Z
TRI
X
Z
TRI
Z
Ordering Information
Span
Sensitivity
(g)
(mV/g)
±4
±4
±4
± 10
± 10
± 10
± 25
± 25
± 25
± 50
± 50
± 50
±100
500
500
500
200
200
200
80
80
80
40
40
40
20
Noise
(mg rms)
10
10
10
10
10
10
10
10
10
50
50
50
80
Bandwidth
(Hz)
DC-100
DC-100
DC-100
DC-100
DC-100
DC-100
DC-100
DC-100
DC-100
DC-100
DC-100
DC-100
DC-100
Voltage Regulator, 8 – 30 VDC input (not available with DigiCal)
High Temperature Package (see package drawing above)
Digital Calibration EEPROM (DigiCal)
Document Part Number: 6020-0001-01
phone: 408.965.3300
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f a x : 4 0 8 . 3 2 4 .4 8 4 0
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e - m a i l : i n f o @ x b o w. c o m
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w e b : w w w. x b o w. c o m
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