MODEL 7120A ACCELEROMETERSPECIFICATIONS

DIMENSIONSIEPE Modal Accelerometer
Wide Bandwidth to 10kHz
10-32 Side Connector
Miniature Cube

The Model 7120A is a high performance IEPE
accelerometer designed for modal applications. Theaccelerometer is available in ±50g to ±1000g dynamic
ranges and offers a flat frequency response to >6kHz. The
model 7120A is designed for adhesive mounting andfeatures a hermetic welded Titanium construction with aside mount connector. The standard operating temperature
range extends from -55°C to +100°C.

FEATURES±50g to ±1000g Dynamic Range
Modal Testing
Welded Construction, Titanium
Hermetically Sealed
Annular Shear Mode
Stable Temperature Response
TEDS Option

APPLICATIONSSENSOR SOLUTIONS /// Model 7120A Rev D

Modal Testing
Vibration & Shock Monitoring
Laboratory Testing
General Purpose Usage

07/2017

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MODEL 7120A ACCELEROMETERPERFORMANCE SPECIFICATIONS
All values are typical at +24°C, 80Hz and 4mA excitation unless otherwise stated. Measurement Specialties reserves the right to update
and change these specifications without notice.
Parameters
DYNAMIC
Range (g)Sensitivity (mV/g)
Frequency Response (Hz)Frequency Response (Hz)Natural Frequency (Hz)Phase Response (Hz)Non-Linearity (%FSO)
Transverse Sensitivity (%)
Shock Limit (g)±50100
0.5-4000
0.3-6000
37000
1-3000±1<510000±500
100.5-5000
0.3-7000
37000
1-3000±1<510000±1000
50.5-6000
0.3-8000
42000
1-3000±1<510000

ELECTRICAL
Compliance Voltage (Vdc)
Excitation Current (mA)
Bias Voltage (Vdc)
Bias Voltage (Vdc)
Output Impedance (Ω)
Full Scale Output Voltage (V)Residual Noise (g RMS)
Discharge Time Constant (sec)Grounding

18 to 30
18 to 30
2 to 102 to 108 to 128 to 126 to 13
6 to 13<100<100±5±50.0004
0.00080.8 to 1.2
Case Grounded

18 to 30
2 to 108 to 126 to 13<100±50.0012

ENVIRONMENTAL
Temperature Response (%)
Operating Temperature (°C)
Storage Temperature (°C)
Humidity

See Typical Temperature Response Curve-55 to +100-55 to +100
Hermetically Sealed

PHYSICAL
Sensing Element
Case Material
Electrical Connector
Weight (grams)
Mounting

Ceramic (shear mode)
Titanium
10-32 Coaxial Receptacle
4.0AdhesiveNotes±5%±1dB±5%Room Temperature-55 to +125°C
Broadband 1Hz to 10kHz

Calibration supplied:

CS-FREQ-0100

NIST Traceable Amplitude Calibration from 20Hz to ±1dB Frequency Response Limit

Optional accessories:

310-XXX
314-XXX
116
161A

Cable Assembly, 10-32 to 10-32 (XXX designates length in inches, 10ft standard)
Cable Assembly, 10-32 to BNC (XXX designates length in inches, 10ft standard)
16 Channel IEPE Signal Conditioner, Rack Mount
4-Channel PE & IEPE Signal Conditioner, Bench Top

The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Furthermore, thisinformation does not convey to the purchaser of such devices any license under the patent rights to the manufacturer. Measurement Specialties, Inc. reserves the rightto make changes without further notice to any product herein. Measurement Specialties, Inc. makes no warranty, representation or guarantee regarding the suitabilityof its product for any particular purpose, nor does Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit andspecifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different applications.
All operating parameters must be validated for each customer application by customer’s technical experts. Measurement Specialties, Inc. does not convey any licenseunder its patent rights nor the rights of others.

SENSOR SOLUTIONS /// Model 7120A Rev D07/2017

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MODEL 7120A ACCELEROMETERFrequency Response
Phase Response

Typical Frequency and Phase Response
401035830620102500-5-2-10-15

Phase (degrees)

415-4-20-6-25-30-8-35-40-10110100

1000

10000

Frequency (Hz)Typical Temperature Response
10%8%
Sensitivity Deviation (%)

Sensitivity Deviation (%)

256%
4%2%0%-2%-4%-6%-8%-10%-60-40-20020406080

100120140

Temperature (°C)

SENSOR SOLUTIONS /// Model 7120A Rev D07/2017

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MODEL 7120A ACCELEROMETER

ORDERING INFORMATIONPART NUMBERING

Model Number+Range

7120AT-GGGG-XXlll_____ Optional Thread Dash Numberll_____ Range (0050 is 50g)
l_____ TEDS compliant to IEEE 1451.4 when ‘T’ option is included

Dash Number-01

Thread Options#5-40 UNC-2B

Example: 7120A-0050
Model 7120A, 50g

TE.com/sensorsolutions
Measurement Specialties, Inc., a TE Connectivity company.
Measurement Specialties, TE Connectivity, TE Connectivity (logo) and EVERY CONNECTION COUNTS are trademarks. All other logos, products and/or company names referred to herein
might be trademarks of their respective owners.
The information given herein, including drawings, illustrations and schematics which are intended for illustration purposes only, is believed to be reliable. However, TE Connectivity makes
no warranties as to its accuracy or completeness and disclaims any liability in connection with its use. TE Connectivity‘s obligations shall only be as set forth in TE Connectivity‘s Standard
Terms and Conditions of Sale for this product and in no case will TE Connectivity be liable for any incidental, indirect or consequential damages arising out of the sale, resale, use or misuseof the product. Users of TE Connectivity products should make their own evaluation to determine the suitability of each such product for the specific application.
© 2015

TE Connectivity Ltd. family of companies

All Rights Reserved.

SENSOR SOLUTIONS /// Model 7120A Rev D07/2017

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