Castle GA257B Noise Dosemeter
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 be reviewed on screen or downloaded to a PC for further analysis. 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.
Parameters Measured
User selectable Exchange Rate (3dB, 4dB or 5dB)
User selectable Criterion Level (75dB, 80dB, 85dB or 90dB)
User selectable Threshold Level (-5dB, -10dB or OFF)
Zpeak
% Dose
Lep'd (Lex)
% DOHR (Dose/Hour)
Pa2h (Lep'd expressed in Pascals)
Exposure Time
Lockable Keypad
Constructed from tough crack resistance plastic
EMC:
Emissions: EC 61000-6-3, EN61326-1:2006, CISPR 22:1997 EN55022:1998, FCC Rules, Part 15 2003 Class B
Immunity: IEC 61000-6-2:2005, EN61326-1:2005 Levels ±4kV (Contact), ±8kV (Air)
Amp Mod: IEC 61000-6-2:2005, Level 10V/m
Castle Noise Dosemeter
#Grup produk P111561294
Spesifikasi
| Application | Noise at Work |
|---|---|
| Batteries | 1x PP3 (9V) Approximately 12 hours continuous use |
| Calibration (dB) | 91.0 to 120.0 @ 1KHz |
| Criterion Level (dB) | 75, 80, 85 or 90 |
| Detector Characteristic | RMS and Peak |
| Dimensions (mm) | 60 (width) x 35 (depth excluding pocket clip) x 135 (height) |
| Display | Custom alphanumeric LCD, digit size 7x5mm |
| Exchange Rate (dB) | 3, 4 or 5 |
| Humidity Effect | < 0.5dB from 25% to 90% RH |
| Linear Operation Range (dB) | 70 |
| Measurement Parameters | Dose, Lep’d (LEX) |
| Memory | 4800 Data Intervals Maximum |
| Microphone Cable Length (mm) | 800 (including rubber sleeve and microphone) |
| Operating Temperature Range (°C) | -10 to +50 |
| Peak (dB) | 3 above top of selected range |
| Processing | A to D Converter: 12-bit, 325kHz sampling. 8MHz, micro-controller |
| Standards | IEC61672-1-2002 (Sound Level Meters), IEC61252-1993 (Personal Sound Exposure Meters), IEC 61672-1:2013 |
| Threshold Level (dB) | -5, -10 or OFF |
| Vibration | No Effect on Instrument |
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