Description
Overview
GAOTek Digital Noise Dose Meter is ideal for quick on–site surveys and for monitoring personal noise exposure in accordance with European ISO or USA OSHA, MSHA, DOD AND ACGIH standards. The meter is two overlapping measurement ranges. Linear & C Peak weightings, Fast & Slow time weightings, and energy exchange rates (Q) of 3, 4, 5 & 6. In dose measurement mode, it displays % dose, % dose projected for an 8-hour period, peak level and measurement duration.
Features
- Simple operation, including direct read–out of results
- Eight built–in standard dose measurement setups
- Nine user – defined measurement setups
- A single sound level meter (SLM) setup
- 50 dose (DATA) result stores
- Download of setups from PC to the meter
- Keypad lock protects meter against accidental operation
- Timer’s support pre–selection of measurement time and duration
- Use USB data output to connect with PC
Technical Specifications
| Microphone | 0.5 in (12.7 mm) electret condenser microphone with 31 in (787 mm) integral cable |
| Display | Liquid Crystal Display |
| Measurement Ranges (Linearity and Indicator ranges at 4 KHz) | 60 dB to 130 dB: 60 dB to 130 dB (A and C) |
| 70 dB to 140 dB: 70 dB to140 dB (A and C) | |
| Peak Ranges (C–weighted or Linear Peak over the top 40 dB of each measurement range) | 60 dB to 130 dB: 93 dB to 133 dB Peak |
| 70 dB to 140 dB: 103 dB to 143 dB Peak | |
| Frequency Weightings | RMS Detector: A or C |
| Peak Detector: C or Z (Linear) | |
| Time Weightings | Fast and Slow (RMS detector) |
| Exchange Rate | 3 dB, 4 dB, 5 dB or 6 dB |
| Stabilization Time | 10 seconds from power on |
| Threshold and Criterion Levels (From the setup, predefined in the built – in setup according to applicable standards) | User–defined setups in the following ranges: |
| Threshold Level: 70 dB to 90 dB in 1 dB steps | |
| Criterion Level: 80 dB, 84 dB, 85 dB or 90 dB | |
| Criterion Level: 80, 84, 85 or 90dB | At 0.1 dB above the top of the selected measurement range |
| At 0.1dB above the top of the selected measurement range | Under–Range Indications |
| High Level Detector | 115 dB |
| Keypad Lock | Lock and unlock by pressing key combinations: Up and right arrows to lock; left and down arrows to unlock |
| Clock | Real–time clock with calendar |
| Memory | Results from 50 measurements can be stored for later viewing and download |
| Measurement Control | Measurement Duration: May be set to 5, 10, 15, or 30 minutes or 1, 2, 4, 8, 10, 12, or 24 hours |
| Timers | Up to 16 timers (automatic start and stop) can be set (maximum up to one month ahead of measurement time) |
| Timer Controlled Started / Stop | Set up from the PC software or meter keypad |
| Logging | All measurement parameters values can be logged |
| Logging Period (LP) | 1 s, 2 s, 5 s, 10 s, 15 s, 20 s, 30 s, 1min, 2 min, 5 min, 10 min, 15 min, 20 min, 30 min or 60 min |
| Logging Capacity | 120000 values can be stored at any one time |
| Setup | Eight built–in (predefined) default setups are included. Nine additional user–defined setups can be stored |
| Output | USB interface |
| Power Supply | 4 x 1.5 V AAA Size (UM-4) Battery |
| Battery Indicator | Symbol indicates battery voltage level in 4 steps. Indicator flashes when voltage is insufficient for operation |
| Operating Temperature & Humidity | 32 ºF to 122 ºF (0 ºC to 50 ºC) ,10% RH to 90% RH |
| Storage Temperature & Humidity | 14 ºF to 140 ºF (-10 ºC to 60 ºC) ,10% RH to 75% RH |
| Standard Accessories | Main Unit |
| External Probe | |
| Screwdriver | |
| Carrying Case (B04) | |
| Operation Manual | |
| Optional Accessories | USB Data with Software |
| Bluetooth Data Adapter with Software | |
| Size | 5.5 in x 2.8 in x 1.3 in (140 mm x 72 mm x 34 mm) |
| Weight | Approx. 0.77 lb (350 g) (including batteries) |