Description
Vibration Table Setting With Ambient
Part No.
Temperature at 75 50F
Vacuum Pump-Dual-
1400B (W. M. Welch,
Velocity
Seal
Chicago, Ill.) (or equal)
(In./Sec/Rms)
Frequency (cps)
Bell Jar 6-1/2 x 11 in.
95460 (Corning Glass,
2.0
*15
Corning, N. Y.) (or equal)
2.0
*30
Variable Transformer,
V-10 (General Radio Co.
2.0
50
130V, 60 cycle
Cambridge, Mass.)
2.0
100
(or equal)
1.0
250
0.5
500
Vibration Control
28024-B-2 (Consolidated
0.25
*1,000
Electrodynamics)
0.25
*1,500
Taper Plug
28024-AE-3 (Consolidate
*Not required for Type 4-118-0107.
Electrodynamics)
Straight Plug
28024-AE-4 (Consolidate
Figure 1-35. Transducer Sensitivity Test Data
Electrodynamics)
Button Setting Plug
28024-AE-5 (Consolidate
(2) Connect a 130V, 60 cycle, variable trans-
Electrodynamics)
former to Knockdown Coil Part No. 28024-AE-8.
Holding Fixture
NOTE
28024-AE-6 (Consolidate
Electrodynamics)
The velocity vibration transducer assembly
Spanner Wrench
28024-AE-7 (Consolidate
operates with a 10,000 ohms resistance load.
Electrodynamics)
(3) Set the variable transformer for 30V ac out-
Knockdown Coil, AC
28024-AE-8 (Consolidate
put, and within 5 seconds manually pass the knock-
Electrodynamics)
down coil over the velocity vibration transducer as-
s e m b l y until it is totally enclosed. Remove the
knockdown coil and again note the output voltage.
NOTE
Required for Overhaul of the Vibration
Transducer Type 4-118-0107
Do not turn off the variable transformer when-
ever the knockdown coil is in the vicinity of the
velocity vibration transducer assembly.
