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ISOTRON(R) Accelerometer
Model 5253A-100
* Triaxial * * * * * * * Low Impedance Output 10 kHz Bandwidth Milli-g's Resolution Hermetically Sealed Ground Isolated Single Cable, NEMA 4 Rating Industrial, General Purpose Applications
ENDEVCO
MODEL 5253A-100
Actual size
DESCRIPTION
The ENDEVCO(R) Model 5253A is a rugged triaxial piezoelectric accelerometer with integral electronics, designed specifically for measuring vibration in three orthogonal axes in industrial environments. The transducer features a NEMA 4 rated 4-pin connector for output connection, and can be screw or adhesive mounted. A centrally located captive screw is provided for 360 mounting convenience. The Model 5253A features ENDEVCO's PIEZITE(R) Type P-8 crystal elements, operating in annular shear mode, which exhibit excellent output sensitivity stability over time. This accelerometer incorporates three stand-alone, low noise internal hybrid signal conditioners, each operating in a twowire system. Its low impedance voltage outputs are connected to the same cables that supply the required constant current power. Signal grounds are connected to each other but isolated from the mounting surface. ENDEVCO Model 6929 industrial cable is supplied with this accelerometer as standard accessory. ENDEVCO Signal Conditioner Models 133, 2792B, 2793, 2775A or OASIS 2000 ComputerControlled System are recommended for use with this accelerometer.
TYPICAL AMPLITUDE RESPONSE
15
AXIS X (WHITE) GROUND (BLACK) AXIS Z (BLUE) AXIS Y (BROWN)
NOTE: COLORS APPLY IF MATED WITH OPTIONAL 6929 CABLE
.640 (16.26) .350 (8.89) .275 (6.99)
1.100 (27.94) .640 (16.26) .350 (8.89) 1.100 (27.94)
.625 (17.15)
10-32 UNF-2B THD X .200 (5.08) DEEP .885 (22.48) .325 (8.26)
10-32 UNF-2A THD
TYPICAL TEMPERATURE RESPONSE
20
10
10
dB DEVIATION
5
% DEVIATION
0
0
-10
-5
1
10
100
1000
10000
-10 100000
-20
-60
(-51)
-20
(-29)
20
(7)
60
(16)
100
(38)
140
(60)
180
(82)
220
(104)
FREQUENCY IN HERTZ
TEMPERATURE F (C)
APPLIES TO CALIFORNIA FACILITY
ENDEVCO
ISOTRON(R) Accelerometer
SPECIFICATIONS
The following performance specifications conform to ISA-RP-37.2 (1964) and are typical values, referenced at +75F (+24C), 4 mA, and 100 Hz, unless otherwise noted. Calibration data, traceable to National Institute of Standards and Technology (NIST), is supplied. DYNAMIC CHARACTERISTICS RANGE VOLTAGE SENSITIVITY 10% FREQUENCY RESPONSE RESONANCE FREQUENCY AMPLITUDE RESPONSE [1] 5% (x,y) 5% (z) 1dB (x,y) 1dB (z) TEMPERATURE RESPONSE TRANSVERSE SENSITIVITY AMPLITUDE LINEARITY [2] OUTPUT CHARACTERISTICS OUTPUT POLARITY DC OUTPUT BIAS VOLTAGE OUTPUT IMPEDANCE FULL SCALE OUTPUT VOLTAGE RESOLUTION .5 Hz to 10 kHz, broadband GROUNDING Vdc V equiv. g rms Units g mV/g 50 100 See Typical Amplitude Response 35 1 to 7000 1 to 8000 .5 to 9000 .5 to 10 000 See Typical Curve 5 1 to full scale Acceleration applied in the direction of the arrow on the unit produces positive output +11.3 to +12.7 200 5 0.0003 Each sensor (axis) is shielded by its inner case which is connected to common signal ground, but isolated from the external housing
MODEL 5253A-100
kHz Hz Hz Hz Hz % %
POWER REQUIREMENT SUPPLY VOLTAGE SUPPLY CURRENT WARM-UP TIME To within 10% of final bias ENVIRONMENTAL CHARACTERISTICS TEMPERATURE RANGE HUMIDITY SINUSOIDAL VIBRATION LIMIT SHOCK LIMIT BASE STRAIN SENSITIVITY X and Y Axis Z Axis THERMAL TRANSIENT SENSITIVITY ELECTROMAGNETIC SENSITIVITY PHYSICAL CHARACTERISTICS DIMENSIONS WEIGHT CASE MATERIAL CONNECTOR [3] MOUNTING TORQUE CALIBRATION SUPPLIED: SENSITIVITY MAXIMUM TRANSVERSE SENSITIVITY FREQUENCY RESPONSE ACCESSORIES Model 6929 [4] P/N 32150
Vdc mA sec
+18 to +24 +2 to +10 <3
g pk g pk equiv. g pk/strain equiv. g pk/strain equiv. g pk/F (/C) equiv. g rms/gauss
-67F to +221F (-55C to +105C) Hermetically sealed sensor assemblies 200 1000 0.0004 0.004 0.1 (0.18) 0.0001
gm (oz)
lbf-in (Nm)
See Outline Drawing 37 (1.28) Nickle iron alloy inner case, anodized aluminum housing 4-pin, mates with Endevco 6929 industrial cable. 18 (2)
mV/g % dB dB
20 Hz to 10 kHz (X,Y axes) 20 Hz through resonance (Z axis only) 3. Color codes with 6929 cable: Brown -Y, White - X, Blue - Z, Black - Common. 4. 4-wire PVC-jacketed cable with NEMA 4; IP65 rating. 5. 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.
ISOTRON (each channel) Constant Current Source + Voltage Supply
CABLE ASSEMBLY, 5 METER MODIFIED CAP SCREW, 10-32x3/4"
OPTIONAL ACCESSORIES Model 3027AM5 EXTENSION CABLE, 3 BNC's NOTES 1. Frequency response calibration on Axis X and Y are limited by the mounting mechanism of the calibration shaker. Actual frequency responses of Axis X & Y are similar to Axis Z. 2. Short duration shock pulses, such as those generated by metal-to-metal impacts, may excite transducer resonance and cause linearity errors. Send for TP290 for more details.
Biased Output
Decoupling Capacitor
Unbiased Output
Continued product improvement necessitates that Endevco reserve the right to modify these specifications without notice. Endevco maintains a program of constant 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 1100

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