Analog Accelerometer 15208A

PRELIMINARY
15208A 25208A 35208A
Uniaxial
Digital Accelerometers
User Configurable ±250 g, ±500 g
Wide Bandwidth to 10 kHz
Biaxial
Triaxial
8A
This Measurement Specialties product is subject to U.S. Export Law.
Technical Data*
Features and Benefits
User Configurable Settings
The analog/digital output range and low-pass filter of each digital
accelerometer axis can be set via a built-in RS-485 interface using a free,
downloadable Instrument Configuration Utility (ICU). An RS-485 to RS-232
adapter is available.
RS-485 Serial and Analog Outputs
Calibrated, ranged and filtered data can be streamed out at up to 3 Mbit/
sec via RS-485. Analog output of up to three calibrated, ranged and filtered
channels are provided for compatibility with existing systems.
High Accuracy and Linearity over Wide Temperature Range
Accelerometer accuracy is improved by minimizing variations due to
temperature and aging effects. Each axial sensor has been tested and
compensated over the -40 to +85°C temperature range.
Built-in Calibration
Calibration data for each sensor is maintained in the accelerometer. All
digital data output is fully calibrated and easily converted to user specified
engineering units.
Self-Test
Self-test commands help verify channel integrity and wiring connections.
Small Size
Complete conditioned uniaxial, biaxial and triaxial accelerometers with
digital signal processing in just two cubic inches.
­ uilt-In Power Supply Regulation
B
Continuous unregulated DC power from +8.5 to +36 volts is all that is
required to measure accelerations on all axes. Reverse power voltages
of up to -80 V can be withstood indefinitely. Transients of +80 V for 550 ms
compatible with MIL-STD-704A can be withstood with full operation.
Easy Installation with Minimal Wiring Requirements
A built-in terminal block or cable with 9-pin connector simplifies wiring.
Wiring can be minimized by daisy-chaining the two multidrop RS-485 pins on
up to 30 digital accelerometers. Tapped holes on bottom and back simplify
horizontal or vertical mounting.
Suitable for Harsh Environments
These accelerometers are robust and can be used in harsh environments,
surviving 1500 g powered or unpowered.
Warranty
Measurement Specialties digital accelerometers come with a three-year
factory warranty.
15208A.25208A.35208A Digital Accelerometers
precisionsensors.meas-spec.com Inertial Measurements
Made Fast and Easy
These Measurement Specialties digital
accelerometers are complete, easy-touse, user-configurable sensors containing one to three accelerometers, a temperature sensor, signal processor, RS-485
interface and three analog outputs in a
small, easy-to-install package.
All channels are sampled simultaneously
to avoid data skewing. The digital signal
processor takes 16-bit samples, filters,
ranges, and calibration compensates
at up to 42,500 samples/sec/channel.
Digital data can be streamed out at up
to 3 Mbit/sec.
The output range, filter frequency and
calibration of each channel, as well
as telemetry configuration, can be set
by the user via the RS-485 command
processor. CRC-8 and CRC-16 error
checking is used to ensure command
and data integrity.
The built-in temperature sensor can be
used by critical applications to correct
for any residual temperature effects.
2236 N. Cleveland-Massillon Road
Akron OH 44333 PH : 330-659-3312 8/2/2013
www.meas-spec.com
PRELIMINARY
Specifications for 15208A, 25208A and 35208A - improved specifications available upon request
Ta = Tmin to Tmax; acceleration = 0 g unless otherwise noted; within one year of calibration.
Parameter
Min
Typical
Max
Units
Accelerometer Full Scale Range
Option R250
Option R500
±250
±500
g
g
Sensitivity Drift 25°C to Tmin or Tmax
1% (TBD)
%
Percent of sensitivity at 25°C
Zero g Drift 25°C to Tmin or Tmax
±1.5
g
Some units to 3 g
Alignment
±3.0
degrees
Transverse Sensitivity
0.25
Nonlinearity
0.2
%
2
% FSR
Deviation from ideal axes
Inherent sensor error, excluding misalignment
Best fit straight line
Noise Density
Temperature Sensor
Range
Resolution
Accuracy
-55
0.25
±2
Digital Signal Processor
Sensor Scan Rate
Analog Outputs
Voltage Swing
Impedance to Analog Nonlinearity
0.25
100
130
Digital Output Word Size
16
bits
Filtered, gained and calibration corrected
Power Supply (Vs)
Input Voltage Limits
Input Voltage - Operating
Input Current
Rejection Ratio
-80
+8.5
50
>120
+80
+36
V
V
mA
dB
-80 V continuous, >38 V if <550 ms, duty <1%
Temperature Range (Ta)
-40
+85
°C
Terminal block Option T000 rated to -30°C
Mass
0
kHz
2.8
125
±3
°C
°C
°C
Ta = - 40 to +85°C
42,500
Hz
User configurable, channels processed in parallel
4.75
220
0.15
0.494
[12,55]
0.354
[9,00]
0.354
[9,00]
0.354
[9,00]
0.354
[9,00]
0.354
[9,00]
3 mm x 0,5 mm Thread
0.138 [3,50] Deep
16 Places on 2 Views
0.575
[14,60]
0.354
[9,00]
1
1.437
3 [36,50]
V
Ω
% FSR
Configurable to sensor
Iout = 1 mA max
Excluding sensor nonlinearity
DC
grams
0.167 0.354
[4,25] [9,00]
Lower filter cutoffs are user configurable
mg/√Hz 10 Hz to 400 Hz
78
Mechanical
Lower ranges are user configurable
Frequency Response
10†
Shock Survival
±1500
±1500
†User configurable low-pass filter 3dB cutoff (number poles configurable)
Conditions/Notes
0.240
[6,10]
g
Any axis for 0.5 ms, powered or unpowered
Connections
T000
T004
Pin
1
2
3
4
5
6
7
Signal Analog1+Analog2+Analog3+ Signal - RS485- RS485+ Aux
Wire Brown
Red
Orange Yellow Green
Blue
Violet
9
Gnd
White
3
1
2
2
0.689
[17,50]
2.049
[52,05]
Rear View
Bottom View
Spring and cable
added with cable
options
0.187
[4,76]
Ordering Information
35208A
Dimensions in inches [mm]
R500
T004
C002
Instrument
35208A
25208A
15208A
Accelerometer
R500 : ±500g 10kHz
R250 : ±250g 10kHz
Mounting
adapters
(sold
separately)
Termination
T004 : 4 ft. cable with DB9M
T000 : Terminal Block
Tnnn : Custom length, nnn ft.
35170A Horizontal
15208A.25208A.35208A Digital Accelerometers
precisionsensors.meas-spec.com 8
+Vs
Grey
35172A Vertical
Calibration
C001 : Standard room temp cal only
C002 : C001 cal plus offset data
over -40 to +85°C range
2236 N. Cleveland-Massillon Road
Akron OH 44333 PH : 330-659-3312 K11
Adapter
0 : None
1 : 35170A Horizontal mounting adapter
3 : 35172A Vertical mounting adapter
Interface kit
0 : None
1 : Interface kit with US power supply
2 : Interface kit with int’l power supply
3 : Interface kit for terminal block (US)
4 : Interface kit for terminal block (int’l)
8/2/2013
www.meas-spec.com
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