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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 GA257L adds logging capabilities, allowing data to be downloaded to a PC using the Castle dBdataPro noise analysis software, and measures sound pressure levels and Leq.
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 (both GA257B and GA257L):
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)
Pmax
% Dose
Projected % Dose
Lep'd (Lex)
% DOHR (Dose/Hour)
Pa2h (Lep'd expressed in Pascals)
Exposure Calculations
Linearity Range 30-140dB
Lockable Keypad
Constructed from tough crack resistance plastic
The GA257L dosemeter also features:
Lp (SPL)
Leq
Real Time Clock
Data-Logging, up to 4800 intervals at user selected periods
Output to PC for further data analysis
DC Power In
AC Output
Each GA257 SONUS Dosemeter is supplied in its own plastic case complete with a handbook, windshield, calibration screwdriver and pen.
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: Operating Range: -10 to + 50șC
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
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
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)
BSRIA Instrument Solutions reserve the right to change Instrument
specifications without notification. Hire Instrument Specifications may
differ from those claimed by the manufacturer.
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