15201A 25201A 35201A Digital Accelerometers User Configurable

15201A 25201A 35201A
Uniaxial
Biaxial
Triaxial
Digital Accelerometers
User Configurable ±1 g to ±2 g
1A
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. An RS-485 to
RS-232 adapter is available. Free, downloadable Instrument Configuration
Utility (ICU) software is available online.
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 temperature
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 triaxial accelerometer with digital signal processing in
approximately two cubic inches.
­ uilt-In Power Supply Regulation
B
Unregulated DC power from +8.5 to +36 volts is all that is required to measure
accelerations on all axes. Digital accelerometers are ideal for automotive
applications as they survive both continuous reverse battery and load dump
transients. MIL-STD-704A compatible.
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.
They survive 3500 g powered and unpowered.
Warranty
Measurement Specialties’ digital accelerometers come with a three-year
factory warranty.
15201A.25201A.35201A 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
Specifications for 15201A, 25201A and 35201A - 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
Conditions/Notes
Accelerometers Full Scale Range
Sensitivity Drift 25°C to Tmin or Tmax
Zero g Drift 25°C to Tmin or Tmax
±20
mg
Alignment
±1.5
degrees
Transverse Sensitivity
0.25
%
Nonlinearity
0.2
Frequency Response
Noise Density
Temperature Sensor
Range
Resolution
Accuracy
-55
0.25
±2
Digital Signal Processor
Internal Word Size
Sensor Scan Rate
15,000
Analog Outputs
Voltage Swing
Impedance to Analog Nonlinearity
0.2
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
80
120
+80
+36
V
V
mA
dB
-80 V continuous, >38 V if ≤550 ms, duty <1%
Continuous
Temperature Range (Ta)
-40
85
°C
Terminal block Opt. T000 rated to -30°C
Mass
Shock Survival
-1500
†
±2
±0.3
0†
g
On each axis. User configurable
%
Percent of sensitivity at 25°C
1.25
% FSR
2100†
Hz
110
Deviation from ideal axes
Inherent sensor error, excluding misalignment
Best fit straight line
Lower filter cutoffs are user configurable
μg/√Hz
125
±3.5
°C
°C
°C
Ta = -40 to 85°C
32
42,500
bits
Hz
User configurable, channels processed in parallel
4.5
220
0.15
V
Ω
% FSR
78
Excluding sensor nonlinearity
DC
grams
+1500
g
Any axis for 0.5 ms., powered or unpowered
User configurable low-pass filter 3dB cutoff (number poles configurable)
Mechanical
Connections
T000
0.167 0.354
[4,25] [9,00]
0.494
[12,55]
0.354
[9,00]
0.354
[9,00]
0.354
[9,00]
0.575
[14,60]
0.354
[9,00]
0.354
[9,00]
0.354
[9,00]
1
1.437
3 [36,50]
T004
3 mm x 0,5 mm Thread
0.138 [3,50] Deep
16 Places on 2 Views
0.240
[6,10]
Pin
1
2
3
4
5
6
7
Signal Analog1+Analog2+Analog3+ Signal- RS485- RS485+ Aux
Wire Brown
Red
Orange Yellow Green
Blue
Violet
8
+Vs
Grey
9
Gnd
White
3
1
2
2
Spring and cable
added with cable
options
0.187
[4,76]
0.689
[17,50]
2.049
[52,05]
Rear View
Bottom View
Dimensions in inches [mm]
Ordering Information
35201A
R002
T004
C002
Instrument
35201A
25201A
15201A
Accelerometer
R002 : ±2 g 2100 Hz
Termination
T004 : 4 ft. cable with DB9M
T000 : Terminal block
Tnnn : Custom length, nnn ft.
Mounting
adapters
(sold
separately)
Calibration
C001 : Standard room temp cal only
C002 : C001 cal plus offset data
over -40 to +85°C range
35170A Horizontal
15201A.25201A.35201A Digital Accelerometers
precisionsensors.meas-spec.com 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)
35172A Vertical
2236 N. Cleveland-Massillon Road
Akron OH 44333 PH : 330-659-3312 8/2/2013
www.meas-spec.com