Casella CEL CEL-281 - Manual (Page 41)

a store identity number between 1 and 20,
odd numbers show start times, and even
numbers show stop times (Section 3.3.9).
All times use the twenty-four hour clock.
1 MIN Sampling period of currently displayed
parameter (average or maximum levels).
10 SEC/1 SEC Sampling period of currently displayed
parameter (average or maximum levels).
OVERLOAD Signal overload (greater than 200 Pa) has
occurred.
LOW BAT Battery level too low for reliable operation.
TC= Time constant (weighting) in use:
= Fast, (125 ms)
= Slow, (1 s)
= Impulse, (35 ms rise time, 1.5 s decay)
= Data (very short: 18.75 ms).
Q= Exchange rate in use: 3, 4, 5, 6.
ON
MAX
LAVG
TIME
1 MIN
10 SEC
RUN
DATE
P%Dose
Pa h
dBAC
ThrCri TC= Q=
OVERLOAD LOW BAT
2
900166
Figure 7: Display showing all possible legends
(Normally they will all appear at the same time only during power-up)
CEL-281 Operator's Handbook - Page 33
How It Works