31207B

Specifications*
Parameter
31207B
Range
Measurement Full Scale, Option R1k2
Sensitivity at 25°C
Option R1k2
Drift Tmin to Tmax
Zero g Bias Level
At 25°C
Drift Tmin to Tmax
Alignment
Deviation from Ideal Axes
g Sensitivity
Triaxial Rate Gyro
±1000, ±1200°/sec Range
< ±6°/sec Offset Stability
Measurement Specialties, Inc.
2236 N. Cleveland-Massillon Rd.
Akron, Ohio 44333-1255 USA
(330) 659-3312 www.meas-spec.com
precisionsensors.meas-spec.com
2
3
3
1
2
Nonlinearity
Frequency Response
Noise Density
Self Test Input Impedance
Self Test Response w/ST pin grounded
±1200°/sec FSR
±1000°/sec FSR
Temperature Sensor
Sensitivity
+25°C Bias Level
Outputs
Output Voltage Swing
Power Supply (Vs)
Input Voltage Limits
Input Voltage - Operating
Input Current
Rejection Ratio
Temperature Range (Ta)
Mass
Shock Survival
Data subject to change without notice
†Scale linearly with range option Rnnn
Min
Typical
Max
±1200†
°/sec
1.7†
mV/°/sec
% FSR
2.50
±3.0
±1.5
0.2
2.5
0.1
0
0.1
10
±6.0
1
100
0.945
[24,00]
0.354
[9,0]
0.145
0.125
V
V
9.0
2.5
mV/°K
V
0.25
4.75
0.945 0.354
[24,00] [9,0]
Third angle
3
1
2
Mounting Instructions
►Use
►
two 3.0 mm x 0.5 mm thread machine screws to attach to
one of the three 31207B mounting faces [recommended torque
5 lbf-in (0.56 N.m)]. DO NOT thread a screw more than 2.5
mm (0.100 inch or 5 turns) into any 31207B mounting face as
this can damage the gyro and will VOID the warranty.
►A
► light film of oil or silicone grease can be used to enhance
contact between two mounting surfaces.
►A
► locking compound should be used on all threads to prevent
screws loosening due to vibrations.
Three-Year Limited Warranty
Measurement Specialties, Inc. warrants this product against defects
in materials and workmanship for a period of three years from date of
shipment. During the warranty period, Measurement Specialties will, at
its option, either repair or replace products which prove to be defective.
Exclusions
This warranty does not apply to defects or damage resulting from:
•Improper installation or maintenance
•Customer supplied software or interfacing
•Unauthorized modification or misuse
•Operation outside of the product specifications
Limitations
The warranty set forth above is exclusive and no other warranty,
whether written or oral, is expressed or implied. Measurement
Specialties specifically disclaims the implied warranties of
merchantability and fitness for a particular purpose.
Some jurisdictions do not allow limitations on how long an implied
warranty lasts, so the above limitation or exclusion may not apply to
you. However, any implied warranty of merchantability or fitness is
limited to the three-year duration of this written warranty.
Warranty Service
To obtain service during the warranty period, products must be returned,
transportation prepaid, to Measurement Specialties.
31207B Rev. 8/17/13
How to Use the 31207B
Dimensions in inches [mm],
identical for each view where
applicable.
Cable to 9-pin male
D-Shell connector
V
-20
+38
V
+8.5
+36
V
18
30
mA
>120
dB
-40
+85
°C
35
grams
-2000
+2000
g
*within one year of calibration
2
Gyros measure rotation
around each axis as defined
by right hand rule.
% FSR
Hz
°/sec/√Hz
kΩ
1.115
[28,30]
0.295
[7,50]
3 mm x 0,5 mm Thread
3,5 mm [0.138] Deep
0.295
[7,50]
(6) Mounting Holes
on 3 sides
V
°/sec
degrees
°/sec/g
3
1
Units
Gyro Connections
Pin
Description
Cable Wire
1
2
3
4
5
6
7
8
9
Gyro 1
Signal common
Gyro 2
+5V Output
Gyro 3
Temperature
Self Test
Power
Ground*
Brown
Red
Orange
Yellow
Green
Blue
Violet
Grey
White
}
}
}
}
twisted pair
twisted pair
twisted pair
twisted pair
*connected to braided shield at D-shell pin
CAUTION
Improper wiring, particularly Power, may cause
permanent damage and void the warranty.
Pins other than +Vs should not exceed 5 V.
►Connect
►
a +8.5 to +36 V DC power source to pin 8, ground
to pin 9.
►Connect
►
a differential or floating input A/D converter to each
signal and signal common pins (pins 1 and 2 for Gyro 1, pins
3 and 2 for Gyro 2, pins 5 and 2 for Gyro 3 and pins 6 and
2 for Temperature). For best results, use a converter with
an input impedance greater than 1 MΩ and common mode
rejection ratio greater than 60 dB. Single-ended converters
are not recommended but if used, leave pin 2 unconnected
to eliminate ground loops. A positive rotation (labeled on the
gyro cover) causes a positive change on the corresponding
output. Rotation is measured around each axis as defined by
right hand rule.
►Keep
►
cable lengths between the angular rate sensor and A/D
converter as short as practical. Use shielded twisted pair
wiring, especially near electric motors or other noise sources.
►As
► a rule of thumb, sample frequency should be at least
10 times the signal bandwidth when linear interpolation is
used for signal reconstruction. Built-in or external low-pass
filtering can be used to lower the noise floor and eliminate
spurious peak measurements from short-duration shock
impulses with insignificant energy content.
►A
► logic 0 on the self-test input will add to all three gyro
outputs (see Specifications for amount). An output that
changes significantly more or less (±30%) than specified
indicates a defective channel, shorted pin or broken wire.
The self-test signal is approximate and should not be used for
calibration. If the self-test feature will not be used, pin 7 may
be left disconnected.
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