Equivalent Continuous A-Weighted Sound Pressure Level（L; Aeq ）Measurement - Kanomax 4431 Instruction Manual

Equivalent continuous A-weighted sound pressure level (L
measurement
①Frequency
weighting key
(A･C, Z)
⑤Measuring
time key
②Display
mode key
＜ ＜ ＜ ＜ Parameter setting ＞ ＞ ＞ ＞
1） The key operation is similar to the measurement of A-weighted sound pressure level (L
except that it needs [Start/Stop] key input for starting the measurement
(automatic calculation).
2）To display the value L
screen.
① Frequency weighting key
② Display mode key
③ Time weighting key
④ Range key
【Method of selecting [Range] Key】
⑤ Measurement time key ：1s、3s、5s、10s、1m、5m、10m、15m、30m、1h、8h、24ｈ
＜ ＜ ＜ ＜ Display ＞ ＞ ＞ ＞
Measurement
Rec:Blinking during
recording
Stp: Holding state
・ Measurement starts with [Start/Stop] key pushed, and ends up automatically at the
measurement time. Digital display indicates the halfway result at the current point of
time. ( Display " Rec " blinks while the measurement.)
・ When Interval is set to Repeat in <Memory> 2/3 screen, the measurement is repeated in every
measurement time. (This is used when continuous measurement is needed.)
・By pushing [Start/Stop] key in course of the measurement, calculation is done using the data
so far.
・By pushing [Pause] key in course of the measurement, the calculation can be done without
using the data in the latest 3 or 5 seconds.
・To set this function, see the description of data delete in "Section 4 Menu 2.Menu(1/2) " .
This function can be set in the Data delete in the <System> 1/3 screen.
・When *** is selected, the final data is calculated and displayed only when [Start/Stop] key is
pushed or 199 hours have gone through.
・All the keys do not respond during the measurement : [Start/Stop], [Mode], [Light]
, keep the "LAeq" key ON in advance in the <View Mode> 3/3
eq
Press [Range] key, and choose by cursor keys▲▼, and press [Range] key
again to register.
and ＊＊＊(until the [Start/Stop]
1s 1s 1s 1s ０００ ０ ０ ０ ｈ ｈ ｈ ｈ ００ ００
００ ００
63.5 dB 63.5 dB 63.5 dB 63.5 dB
60 60 60 60
Stp Stp A A A A
Stp Stp
2) [Menu] key
③Time weighting
key
(F:Fast, S:Slow)
④[Range] key
：A
：L
eq
：F or S
：Select a range where the bar graph indicates
approximately 2/3 of the full scale.
００ｍ ｍ ｍ ｍ ００ ００ｓ ｓ ｓ ｓ
００ ００ ００ ００
130 130 130 130
Fast Leq Fast Leq
Fast Leq Fast Leq
Time weighting：Any of F, S or Imp (doesn't
Frequency weighting：A
32
)
Aeq
＜ ＜ ＜ ＜ Menu＞ ＞ ＞ ＞
<View Mode>
Lp ：INST
(A)View
LAeq ： ： ： ： ON LAeq LAeq LAeq ON ON ON
LAE ：OFF
LAmin：OFF
LAmax：OFF
Stop] key pushed again)
Stop] Stop]
Display mode
Leq
influence the measurement.)
3/3
LA05 ：OFF
LA10 ：OFF
LA50 ：OFF
LA90 ：OFF
LA95 ：OFF
)
A