| Accuracy: |
ANSI S1.4 & S1.43, IEC 61672-1 2002-5 |
| Frequency filters comply with: |
ANSI S1.11 and IEC 61260 |
| Microphone type: |
½" Free field Electret microphone & preamplifier
Type 1 or Type 2 on a removable CEL-495 preamplifier |
| Reference Conditions: |
68°F (20°C) air temperature,
65% Relative Humidity,
1013 mbar (101.325 kPa) atmospheric pressure. |
| Operating Temperature Range: |
14 to 122°F (-10 to 50°C) (Class 1)
32 to 104°F (0 to 40°C) (Class 2) |
| Effect of Humidity: |
Less than ±0.5dB over the range 30 to 90% RH
(non-condensing), rel. to value at ref. conditions |
| Operating pressure range: |
650 to 1080 mbar (65 to 108 kPa) |
| Batteries: |
3 x AA Alkaline or NiMH rechargeable types |
| Battery Life: (hours) |
Up to 12 hours without backlight |
| Dimensions w x h x d: (in/mm) |
2.8 x 10.5 x 1.2 in (71.5x 267.0x 31.0mm)
including preamplifier and microphone |
| Weight including batteries: (oz/gm) |
10.1 oz (< 291g) |
| Tripod socket for fixed measurements |
Yes via standard camera thread (1/4" size) |
| Operator controls: |
8 buttons for power On/Off + 2 x context sensitive
menu selection + 4 navigation + confirm selection |
| Total measurement range (dB) |
20 to 140 |
| Dynamic range on single measurement span (dB) |
120 |
| Noise floor (A weighted dB) |
< 20 (Class 1), < 25 (Class 2) |
| Frequency weightings |
Simultaneous A, C & Z (unweighted) |
| Time weightings |
Simultaneous Slow, Fast and Impulse |
| Displayed parameters available as per user selected list
or using pre-configured setups |
Lp, Lmx, Lmn, Lpk
Leq, LIeq, LDOD, Lavg, LAE, Ltm3, Ltm5
LDN, LDEN, CNEL, 5 x LN% |
| Narrow band real time measurements |
(B version) 11 octave bands 16 Hz to 16 kHz
(C version) 33 third octave bands 12.5 Hz to 20 kHz
with cursor readout plus A & C & Z broad band levels |
| Display of octave and third octave band levels |
Graphical spectrum including broad band values &
With listing of individual band levels in tabular format |
| Measurements in octave (& 1/3) band mode include |
Lmx and Leq with selected freq and time weightings |
| Display type |
240 x 320 full color dot matrix LCD digital
including real-time analog bar graph scale |
| Data storage for time history logging – periods and
profiles (depending on model) 1 Gb internal memory |
999 run maximum memory, long term recording is
separated into "24 hr days" that can be recombined in
Insight software for later analysis and review |
| Timed interval for regular data storage in periods and
profiles |
1 sec to 1 hour in 13 fixed intervals for Periods
1 sec to 30 mins for Profiles |
| Event capture above user selectable level with audio
recording in wav format for identification |
User selectable trigger level 40 – 140 db in 1 dB steps
Wav file stored at hi, med or lo resolution |
| Displayed time span for time history graph on LCD |
Last 60 seconds |
| Signal detected when calibrator placed over microphone
at 1 kHz frequency |
Calibration level set to 114.0 or 94.0 dB
With +/-1 dB span and 0.1 dB resolution by user |
| External power option (12 Vdc) or via USB 5V line |
Yes via universal CEL-PC18 unit |
| Analog outputs |
AC (and optional DC) via 2.5 mm jack socket |
| AC output characteristics -
(Provided for DAT tape / PC wav file recording or
headphone applications) |
Approx 0.85V RMS FSD output on selected
sound level measurement range.
Minimum load impedance 22k. |
| DC output characteristics - |
0 to 1.3V DC for FSD on selected range. |
| Digital output of stored result sets |
Via USB 2.0 mini B connector to Casella Insight program |
