| General |
| Power Requirements |
Ni-Cad Rechargeable battery pack |
| Warm-Up Time |
1 minute |
| Dimensions |
6.8" (H) x 3.1" (W) x 1.1" (D), (172x80x28mm) |
| Weight |
18 oz. (500g) including battery pack |
| Case Construction |
Anodized aluminum extrusion |
| Security Feature |
Locks-in operating function |
| Real Time Clock |
Clock continues running in all functions |
| Performance Capability |
Conforms to ANSI S1.4-1983 and IEC 651-1971 for sound level function and ANSI S1.25-1978 for dosimeter function and ANSI S1.25-1978 for dosimeter function |
| Sound Level Mode |
| Ranges |
50 to 100dB, 80 to 130dB |
| Accuracy |
True RMS, Type S2 |
| Dynamic Range |
Selectable from 50 to 100dB and 80 to 130dB |
| Frequency Response Weighting |
"A" Weighting |
| Response Time |
Slow (1 second) |
| Crest Factor |
10:1 at maximum indication |
| Frequency Range |
20Hz to 8KHz |
| Dosimeter Mode |
| Threshold Level |
Selectable from 50-99dB in 1dB increments |
| Criterion Level |
Selectable, 70, 80, 84, 85 or 90dB |
| Criterion Duration (TC) |
Eight (8) Hours |
| Exchange Rate |
Selectable 3, 4 or 5dB |
| Maximum Indication |
999.9% DOSE |
| Resolution |
0.1% DOSE to 999.9% |
| Elapsed Time |
Displays either Hours: Minutes or Minutes: Seconds, up to 99 Hours 59 Minutes, 59 Seconds. Timing Accuracy: 0.05% |
| 140dB Peak |
Displays number of 140dB peaks that have been detected |
| Microphone |
| Type |
0.52" (13.2mm) Diameter Electret Condenser, Omnidirectional 70° angle of incidence. Maximum sound pressure level 148dB |
| Display |
| Numerical |
4 Digit LCD |
| Annunciators |
Lo Batt, Spl Max, Int 60, % Dose, dBA, plus a colon and decimal point |
| Environmental |
| Operating Temperature |
Operating Temperature: -10° to 50°C |
| Temperature Coefficient |
±0.05dB per °C (25° to 50°C) for reference mea-surement of 105dB at 1000Hz |
| Relative Humidity |
<0.5dB (0-95% RH) |
| Storage Range |
-30° to 45°C (without batteries) |
| Magnetic Field Influence |
No effect in field of 1 oersted (80A/m) |