ENDEVCO
MODEL
63B-10
-100
ISOTRON®Accelerometer
4 PIN RECEPTACLE
1/4-28 UNF-2A MATES WITH
ENDEVCO 3027A CABLE
ENDEVCO
MODAL
63B
S/N YYYY
.562
(14.27) CUBE
.918
(23.32)
STANDARD TOLERANCE
INCHES (MILLIMETERS)
.XX = +/- .03 (.X = +/- .8)
.XXX = +/- .010 (.XX = +/- .25)
MODAL 63B-10, -100
•Shock-Proof, Overload Protected
•Small Size (<15 mm3, <9 gram)
•Single Connector, Flexible Cable
•Z-mount Compatible, Reduces
Installation Time
•Ideal for Modal Analysis
DESCRIPTION
The ENDEVCO®MODAL 63B is a lightweight triaxial
piezoelectric accelerometer with integral electronics,
designed specifically to measure modal responses in three
orthogonal axes. This accelerometer offers exemplary
dynamic range and frequency response in a very small
package. MODAL 63B is designed to withstand typical
handling in the laboratory environment without sustain-
ing internal damage. The triaxial accelerometer also
takes advantage of ENDEVCO's unique Z-mount
quick release mounting system which reduces set-up
time and improves mounting accuracy.
The MODAL 63B features ENDEVCO's PIEZITE®
Type P-8 crystal elements operating in annular shear
mode, which offers very high transduction efficiency
without sacrificing ruggedness. This accelerometer
incorporates three independent internal hybrid signal
conditioners operating in constant current mode. Its
low impedance voltage outputs are connected to the
same 4-wire cable that supplies the required constant
current power. Signal ground is isolated from the
mounting surface. The model number suffix indicates
acceleration sensitivity in mV/g; i.e., 63B-100 features
output sensitivity of 100 mV/g.
ENDEVCO Signal Conditioner Models 133, 2792B,
2793, 4416B or OASIS 482A, 433, 428 are
recommended for use with this accelerometer.
-20
-15
-10
-5
0
5
10
15
20
-60 20 100 180 260
% DEVIATION
TEMPERATURE
o
F (
o
C)
TYPICAL TEMPERATURE RESPONSE
(-51) (-7) (38) (82) (127)
-20
-15
-10
-5
0
5
10
15
20
1 10 100 1000 10000
% DEVIATION
FREQUENCY IN HERTZ
TYPICAL AMPLITUDE RESPONSE
Actual size
APPLIES TO CALIFORNIA FACILITY
ENDEVCO
MODEL
63B-10
-100
SPECIFICATIONS (EACH AXIS)
The following performance specifications conform to ISA-RP-37.2 (1964) and are typical values, referenced at +75°F (+24°C), 4 mA, and
100 Hz, unless otherwise noted. Calibration data, traceable to National Institute of Standards and Technology (NIST), is supplied.
DYNAMIC CHARACTERISTICS Units -10 -100
RANGE g ± 500 ± 50
VOLTAGE SENSITIVITY, Typical mV/g 10 100
FREQUENCY RESPONSE [1] See Typical Curves
Amplitude Response
± 5% Hz 1 to 3000
±1dB, typical Hz .5 to 10 000
Resonance Frequency Hz 25 000
TRANSVERSE SENSITIVITY % ≤5
TEMPERATURE RESPONSE See Typical Curve
AMPLITUDE NONLINEARITY % ≤1
OUTPUT CHARACTERISTICS
OUTPUT POLARITY See arrows on outline drawing
DC OUTPUT BIAS VOLTAGE Vdc +9.5 to +10.5
OUTPUT IMPEDANCE Ω ≤ 100
FULL SCALE OUTPUT VOLTAGE ± 5
RESOLUTION (0.5 Hz to 10 kHz bandwidth) eq. g rms 0.001 0.0005
GROUNDING Signal ground is connected to the case and isolated from the mounting surface
POWER REQUIREMENT
COMPLIANCE VOLTAGE Vdc + 21 to + 24
SUPPLY CURRENT mA + 2 to + 10
WARM-UP TIME (to reach 90% of final bias) sec < 5
ENVIRONMENTAL CHARACTERISTICS
TEMPERATURE RANGE - 67°F to + 257°F (- 55°C to + 125°C)
HUMIDITY Epoxy sealed
SINUSOIDAL VIBRATION LIMIT g ± 500 ± 200
SHOCK LIMIT g pk 8000
BASE STRAIN SENSITIVITY eq. g/µstrain 0.001
At 250 µstrain
THERMAL TRANSIENT SENSITIVITY eq. g /°F (/°C) 0.01 (0.02)
PHYSICAL CHARACTERISTICS
DIMENSIONS See Outline Drawing
WEIGHT gm (oz) 9 (0.32)
CASE MATERIAL Aluminum Alloy, Anodized
CONNECTOR Microtech DR-4S-4H receptacle mates with Endevco Model 3027A/AM3/AM4 cable
MOUNTING [2] Adhesive, stud, or Z-mount
CALIBRATION
SUPPLIED:
VOLTAGE SENSITIVITY mV/g
MAXIMUM TRANSVERSE SENSITIVITY %
FREQUENCY RESPONSE % 20 Hz to 4 kHz
ACCESSORY
Model 3027AM3 (10 ft) TRIAXIAL CABLE, 85°C [3]
(3X BNC's at instrument ends)
P/N 30908 Z-mount, X3
OPTIONAL ACCESSORIES
Model 3027A-120 (10 ft) TRIAXIAL CABLE, 125°C
(Pigtails at instrument ends)
Model 3027AM4-120 (10 ft) TRIAXIAL CABLE, 125°C
2981-12 (Transducer extension cable,
mates with Model 3027AM3)
NOTES
1. Frequency response of the unit will be limited to 1kHz when the
Z-mount is used.
2. Stud mounting of triaxial accelerometer is generally not
recommended due to the difficulty in X-Y alignment. Various
adhesives, such as hot-melt glue, cyanoacrylate, and petro wax,
can be used effectively for mounting within their strength and
temperature limitations.
ISOTRON®Accelerometer
Constant
Current
Source
+ Voltage Supply
Decoupling
Capacitor Unbiased
Output
ISOTRON
(each channel)
Biased
Output
3. Model 3027AM3 cable should only be used for applica-
tions under +85°C. For +125°C environment, use
3027AM4 together with 3027AM3 cable.
4. Maintain high levels of precision and accuracy using
Endevco's factory calibration services. Call Endevco’s
inside sales force at 800-982-6732 for recommended
intervals, pricing and turn-around time for these services
as well as for quotations on our standard products.
Continued product improvement necessitates that Endevco reserve the right to modify these specifications without notice. Endevco maintains a program of con-
stant surveillance over all products to ensure a high level of reliability. This program includes attention to reliability factors during product design, the support of
stringent Quality Control requirements, and compulsory corrective action procedures. These measures, together with conservative specifications have made the
name Endevco synonymous with reliability.
ENDEVCO CORPORATION, 30700 RANCHO VIEJO ROAD, SAN JUAN CAPISTRANO, CA 92675 USA (800) 982-6732 (949) 493-8181 fax (949) 661-7231
www.endevco.com Email:applications@endevco.com
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