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| Measurement Parameters | Dose, Lepd |
|---|---|
| Application | Noise at Work |
| Brand | Castle Group |
| Available Outside the UK? | Yes |
The SONUS Pocket Dosemeters are designed to be powerful and easy to use. These dosemeters are small and tough so measurements and data can be collected throughout the working period (Data can only be reviewed onscreen). The SONUS GA257B is a dedicated basic dosemeter fully compliant with IEC 61252:1993 and IEC 61672-1:2013, giving simultaneous sound exposure (Lep'd) and maximum peak (Zpeak) measurements, an essential feature for Noise at Work Regulations assessments. The GA257 Noise Dosemeters are easy to use and have a clear display allowing data to be read on screen. The keypad can be locked to prevent any measurements being accidentally stopped or altered. The data is stored on flash memory at user selected intervals. The built in software for this meter is designed to suit future upgrading for feature enhancements, legislative changes or instrument upgrades. With the Castle SONUS Dosemeters you will always be in step with the law.
| Standards | IEC61672-1-2002 (Sound Level Meters) IEC61252-1993 (Personal Sound Exposure Meters) IEC 61672-1:2013 |
| Linear Operating Range | 70dB |
| Detector Characteristics | RMS and Peak |
| Exchange Rate | 3dB 4dB 5 dB |
| Criterion Level | 75dB 80dB 85dB 90dB |
| Threshold Level | -5dB -10dB OFF |
| Peak | 3dB above top of selected range |
| Display | Custom alphanumeric LCD, digit size 7mm x 5mm |
| Memory | 4800 Data Intervals Maximum |
| Calibration | 91.0 to 120.0dB @ 1KHz |
| Batteries | 1 x PP3 (9V) Approximately 12 hours continuous use |
| Operating Temperature | -10 to + 50ºC |
| Humidity Effect | < 0.5dB from 25% to 90% RH |
| Vibration | No Effect on Instrument |
| Processing | A to D Converter: 12-bit, 325kHz sampling. 8MHz, micro-controller |
| Dimensions | 60mm (width) x 35mm (depth excluding pocket clip) x 135mm (height) |
| Microphone Cable Length | 800mm (including rubber sleeve and microphone) |
| Weight | 220g (including battery) |
