
Timer
CAL
Delay
Calibration
Fully Operational
Check
Battery
Set
Time Wtg
Set
Freq Wtg
20 second
Level Dose
Distribution
Profile
Time Info.
Press Run
dB
Pa h
%Dose
P%Dose
Select 5 Threshold levels
Select Fast/Slow/Imp. SPL
Select Fast/Slow/Imp. Max
Select L AVG with 4
Select 6 Criterion values
Select 5 Threshold levels
Select Measurement with 4
Cum'lative%
Probability%
%
dB
%
dB
Time
dB
Select Fast/Slow/Imp. SPL
Select 1 min Leq
different Q values
different Q values
Select 10 sec Leq
Select 1 sec Leq
Select Impulse 1 min Max
Select 1 min L AVG with Q = 3 (Leq)
Select 1 min L AVG with Q = 4, 5, 6
Select Fast 1 min Max
Select Slow 1 min Max
Time
Level dB
Select Under Range % Elapsed Time
Select Current Date
Select Current Time
Select Run Elapsed Time
Select Overload % Elapsed Time
Select First Time 200 Pa Exceeded
Clock
Set Current Date
Set Current Time
Set up to 10 Start Times
Set up to 10 Stop Times
Display
On/Off
Off
940025
2
Stopped
Select Time Max occurred
(Once only)
Select Last Time 200 Pa Exceeded
Select Impulse 10 sec Max
Select Fast 1 sec Max
Select Fast 10 sec Max
Select Slow 10 sec Max
Select Slow 1 sec Max
Select Impulse 1 sec Max
Figure 5: Operational areas in the CEL-281
How It Works
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