PRODUCT DATA
DC Response Accelerometers —
Types 4570, 4571, 4572, 4573, 4574, and 4575
The DC Response Accelerometers are designed to
measure low-frequency vibration down to DC. The gas-
damped sensing element offers a wide dynamic range
and very stable frequency response even after subjection
to high shock levels. The accelerometer has built- in
conditioning, where the sensing element and electronics
are shielded, sealed and insulated from the housing.
D-versions are available offering high thermal stability
from –55 to +121°C.
USES AND FEATURES
USES
• Low-frequency, motion and tilt measurements
• Flight testing
• Road load testing
• Transportation
• Modal analysis
FEATURES
• High temperature stability
• Hermetically sealed
• 2 to 500 g full scale
• 10000 g shock survivability
• Low power consumption
Characteristics
The DC response accelerometers are gas-damped, resulting in minimal influence of thermal
changes. These low-impedance units operate with a supply voltage from 8 to 24 V DC, and a
supply current of 5 mA. The ±2 volt differential output is DC-coupled at a bias voltage of
2.5 V DC, and a 2.5 V reference is built-in for differential measurements. The units can be
used with either differential or single-ended input.
Fig. 1 Typical frequency response
Sensitivity [mVg]
Typical Frequency Response
100
1000
10
1
1 10 100 1k
Hz
10 100 1k
10k
–8
–12
–16
–4
0
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
Amplitude
Phase
Typical Frequency Response for 4570
Sensitivity [dB] Phase [Degrees]
4570, 4570-D
4571, 4571-D
4572, 4572-D
4573, 4573-D
4574, 4574-D
4575, 4575-D
070004
10k
Hz
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