K-Shear ® Accelerometer, Miniature, Stud Mount, Voltage Mode Accelerometer0 pages

Acceleration

K-Shear® Accelerometer

Type 8730A...

Miniature, Stud Mount, Voltage Mode Accelerometer
Small, 1,9 gram weight general purpose accelerometer for vibration measurements in wide range of applications. Available
with an integral 5-40 UNC mounting stud (Type 8730AE500:
M3), this light weight hermetically sealed accelerometer features a wide frequency response.
•t Low impedance voltage mode
•t Quartz shear sensing element
•t Ultra-low base strain sensitivity
•t Minimal thermal transient response
•t Ground isolated version available
•t Conforming to CE
Description
The light weight, Type 8730A… accelerometer series uses
Kistler’s uniquely designed K-Shear quartz sensing element.
Operating in the shear mode with precisely cut quartz plates,
allows the accelerometers to exhibit ultra low sensitivity to
thermal transients, base strain and transverse motion. Housed
in a hermetically sealed titanium case, the quartz sensing elements afford excellent long-term stability that ensures repeatable and accurate measurements.

8730A_000-248e-06.13

The standard Type 8730A… and the low temperature
8730A500M8 accelerometer weighs only 1,9 grams while the
M1 version which is slightly larger and "off-ground" weighs
2,5 grams. Internal microelectronic Piezotron® signal conditioning circuit converts the charge developed in the quartz
element as a result of the accelerometer being subjected to
a vibration, into a useable high level voltage signal at a low
impedance output. The low impedance output provides high
immunity to noise and insensitivity to cable motion. Kistler’s
design allows the use of rugged, low cost coaxial cable between the accelerometer and power/readout equipment.
Where minimum cable and connector weight are desirable,
Type 1761B… general purpose cable is recommended.

Dimensionst
Type 8730A…t
Type 8730A…M1t
Type 8730AE…t

AtB
16,3t 9/32
17,3t 5/16t
16,3t 8 mm

Mounting
Type 8730A… can be attached to the test structure by its integral 5-40 stud. Reliable and accurate measurements require
that the mounting surface be clean and flat. The instruction
manual for Type 8730A… accelerometer series provides detailed information regarding mounting surface preparation.
Technical Data
Specification
Acceleration range

Unit
g

Type 8730A500
±500

Acceleration limit

gpk

±1 000

Transverse acceleration limit

gpk

±1 000

Threshold (noise μVrms), nom.
Type 8730A ... M1, M8

grms
grms

0,01 (130)
0,02 (200)

Sensitivity, ±10%

mV/g

10

Resonant frequency mounted, nom.

kHz

76

Frequency response, ±5%
Type 8730A ... M1

Hz
Hz

2 ... 10 000
2 ... 7000

Amplitude non-linearity
Time constant, nom.
Transverse sensitivity nom. (max. 3)

%FSO

±1

s

0,5

%

1,5

Application
The light weight and small size of Type 8730A… series is recommended for precision measurements on small, thin-walled
structures or where space is limited. Changes in dynamic response of the test article due to accelerometer mass loading
are minimize when using this family of accelerometers. It is
ideal for high frequency vibration measurements.

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This information corresponds to the current state of knowledge. Kistler reserves
the right to make technical changes. Liability for consequential damage resulting
from the use of Kistler products is excluded.

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Tel. +41 52 224 11 11, Fax +41 52 224 14 14, info@kistler.com, www.kistler.com