Casella CEL CEL-281 - Manual (Page 134)

6 different criterion levels, and 5 different threshold levels.
Memory capacity: 14 hours*.
Time information:
Date and time,
Elapsed time,
Proportion of overload time (%),
Proportion of under-range time (%),
Time maximum level occurred with Fast time weighting,
Time maximum level occurred with Slow time weighting,
First time 200 Pa level exceeded,
Last time 200 Pa level exceeded.
System information:
Overload indication,
Under range indication
Battery level (V),
Low battery indication.
Note:* If the logging time exceeds 14 hours, memory overflow may cause incorrect
results to be stored with no indication of error.
User adjustable parameters:
Time weighting: Fast, Slow and Impulse to IEC 651, or Data,
(18.75 ms),
Frequency weighting: A- or C-weighting,
Exchange rate Q: 3, 4, 5, 6,
Criterion levels: 70, 75, 80, 84, 85, 90 db,
Threshold levels: 70, 75, 80, 85, 90 dB,
Time and date,
10 Measurement start times,
10 Measurement stop times.
Memory:
32 kBytes RAM with battery back-up.
Technical Information
CEL-281 Operator's Handbook - Page 125