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Integrating-averaging Sound Level Meter Type 2240 – User Guide
There is no pre-configuration necessary before making a measurement with Type 2240. The
instrument is ready as soon as you turn it on. It is suggested, however, that you calibrate your
instrument before a measurement to ensure correct measurement and display values, as well as
complying to specific measurement standards. Your sound level meter is delivered factory cali-
brated, so you can begin your first measurement immediately. Instructions for calibrating at a
later time can be found in Chapter 4, "Basic Operation" on page 17.
Measurement Procedure
Setup and measurement are quick and simple:
1) Switch the sound level meter on using the Power switch on the side panel.
An L
value is displayed and the quasi-analogue bar begins reacting, both of which reflect
A
the instantaneous sound pressure level.
2)
Select the sound level range, judging from the observed level (L
bar).
3)
Press the start button.
4) Be aware of possible under-range
sary to change the sound level range to avoid these readings. See "Selecting the Sound
Level Range" on page 23.
5)
Scroll through sound level parameters until the required parameter is displayed.
Fig.3.1
Examples of measurement options
6)
Stop the measurement as necessary. For example, when L
time has elapsed.
7)
Toggle between parameters for comparison, if needed.
8) Write down the displayed result(s).
9)
Press the start button to take a new measurement.
and overload
indications. It may be neces-
Aeq
and quasi-analogue
AF
is stable or the required
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