45CA0 pages

45CA Charge Amplifier
The 45CA Charge Amplifier conditions and amplifies charge-mode
accelerometer signals. It is a rugged device designed to be used in
engine test cells and other environments where charge-mode
accelerometers are used to measure machinery vibration.
Each 45CA Charge Amplifier provides one (1) channel of charge
amplification, and provides a buffered acceleration output signal as well
as an integrated (velocity) signal output.
Outputs may be configured (at the MTI Instruments factory) for either
differential or singled ended configurations, for optional highpass filter
settings, and for one of three different gain settings to match
accelerometer sensitivities.
INPUTS
Differential Input
Input Connection
Input Impedance
Maximum Input Charge
DC Power
CONFIGURATION OPTIONS
Static discharge protected
Differential with shield connected to case,
MS3101E-10SL-3P
10Ω maximum
16,000 pC pk, maximum
20 – 30 volts DC
OUTPUTS - Outputs are normally differential, factory option single ended
Velocity Output
Acceleration Output (buffered)
Output Impedance
Capacitance Load
DC Output Bias
Linear Output Voltage
Output Current
Linearity
Residual Noise (RTD)
DB-9 connector
DB-9 connector
10Ω maximum
0.1µF maximum
0 Vdc
17Vpk-pk max
25 mA maximum
2%
1.0 mV RMS maximum at gain =1,
4.0 mV RMS max at gain = 10.
Channel gain settings:
Highpass filter options:
Outputs (ACC & VEL):
1, 4, 10 mV/pC
10, 15, 20, 25 Hz
Differential or Single Ended
PHYSICAL CHARACTERISTICS
Dimensions
Weight
Case Material
Mounting
1.6” H X 2.6” W X 4.77” D
(40.6 mm x 66 mm x 121mm)
8 oz.
Aluminum
DIN rail standard
Flange mount optional
325 Washington Avenue Extension
Albany, NY 12205 USA