BRUEL & KJAER 2203 Instructions And Applications

8. The 2203 is now calibrated so that a reading of 94 dB corresponds to
1 g RMS using an accelerometer with a sensitivity of 50 mV /g.
3.5. VIBRATION MEASUREMENTS
3.5.1. General Considerations
For detailed instructions on Accelerometer use see the Accelerometer
Instruction Manual.
When using the 2203 as an accelerometer preamplifier-measuring
amplifier system it must be remembered that the Accelerometer has a
high
frequency resonance which probably lies within the frequency
range of the meter. Hence measurements should be made with the use
of an appropriate supplementary low-pass filter or with an octave or
third octave filter set (such as B & K 1 613 or 1 61 6) to prevent measur-
ing results of the resonance where it is thought possible that the signal
to be measured contains such high frequencies.
The lower frequency limit of the measuring system of 10Hz, is deter-
mined by the 2203.
Hold or mount the 2203 as far as possible from the vibration environ-
ment and other unrequired influences.
3.5.2. Specific Vibration Measurement Procedure
1. Calibrate the system as described in Section 3.4.
2. Mount the Accelerometer by one of the methods described in its In-
struction Manual.
3. Set METER SWITCH to "Fast" and "Lin.".
4. Set OUTPUT ATIENUATOR (transparent) fully clockwise.
5. Adjust INPUT ATIENUATOR (black) for highest possible meter reading
without overdeflection.
6.
Select desired METER SWITCH position.
7. Adjust OUTPUT ATIENUATOR for highest possible meter reading
20

BRUEL & KJAER 2203 Specifications

General

Brand	BRUEL & KJAER
Model	2203
Category	Measuring Instruments
Language	English