Shock Accelerometer
Page 11
002-096e-01.19
Caution: Many industrial monitors have adjustable current controls.
Exceeding the maximum current rating of any accelerometer may
cause permanent damage and void the warranty.
7.1.2
Kistler Couplers
Kistler offers a comprehensive line of power supply/couplers and dual
mode amplifiers. If the user is utilizing these instruments, they are
designed for compatibility with K-Shear accelerometers. The chart
below provides a listing of available power supply/couplers. Please
request data sheets on specific models.
Type
Description
5108A
Passive coupler. Customer provides power.
5114
Battery or line powered single channel coupler for hand held
or surface use.
5118B
Same as features as Type 5114 plus front panel adjustable
gain and filter provision.
5148
16-channel rack mountable AC powered coupler with unity
gain. LEDs indicate circuit integrity. Front panel BNC
output connectors.
5165A
Universal laboratory charge amplifier for dynamic measure-
ments; charge, Piezotron (IEPE) and voltage inputs; integra-
ted data acquisition; Ethernet interface; TEDS
Table 4:
Coupler Table
7.1.3
The Constant Current Power Supply/Coupler
To better understand the purpose of the current source, a review of
the Piezotron* impedance converter is in order.
Figure 6 is a simplified schematic diagram of the shock accelerometer.
When excited, the quartz element produces a charge proportional to
the measurand. The resultant voltage(developed across Cr in Figure
6) is applied to the input of the internal impedance converter
(Electrometer Amplifier). The impedance converter will produce an
output voltage that follows the input faithfully.
