BRUEL & KJAER 1018 Instructions And Applications page 27

Acceleration Ranges: Full scale readings 1 g, 10 g, 100 g, and 1ooo g (peak
value). Accuracy
± 4%
from 10-2ooo c/ s.
Velocity Ranges: Full scale readings o.1 in./sec. (o.25 em/sec.), 10 in/sec.
(25 em/sec.), and 100 in./sec. (250 em/sec.), peak value. Accuracy
± 4%
from 5-2ooo c/s.
Pick-up Sensitivity: The vibration meter is adjusted for a velocity pick-up
output of 96.3 mV sec. per inch. (Peak-value volts and peak-value velocity) .
Pick-up Impedance: Maximum 2 k.!J.
Input Impedance: Approximately 200 kQ.
2. Accelerometer with Cathode Follower as Controlling Element.
Displacement Ranges: o.01" (o.025 em), peak-to-peak value. :::' ; ::
4%
from
100 c/ s to 2ooo c/ s. Approximately
4
%
down at 50 c/ s.
o.l" (o.25 em), 1" (2.5 em), and 10" (25 em), peak-to-peak value,
± 4%
from
10-2ooo c/ s. Approximately
4%
down at 5 c/ s.
Acceleration Ranges: Full scale readings 1 g, 10 g, 100 g, and looo g (peak
value). Accuracy
±
4
%
from 10- 10ooo c/ s.
Pick-up Sensitivity: The vibration meter is adjusted for an accelerometer
( +
cathode follower ) output of 10 m V per g. (Peak-value volts and peak-
value acceleration). The maximum allowable output impedance of the
cathode follower is 1500 Q.
Input Impedance: Approximately 80 kQ.
\feter Scale: Semi-logarithmic.
Gradated: 0-10 (Volts,
G,
inches, inches/ sec.'! .
0-25 (em, em/ sec. ).
-10 to
+
20 db (decibels).
I
COMPRESSOR SECTION
I
Frequency Range: 5-10ooo c/s.
Regulation Speeds: 10-30-100-300-1ooo and 3ooo db/ sec. Can be selected
manually as a fixed speed for a complete frequency sweep or automatically
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