Environment Impact Assessment

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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 which is also fully compliant with IEC 61252:1993 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

• 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

• Lp (SPL)
• Leq
• Cpeak
• LE (SEL)
• Real Time Clock
• Data-Logging
• DC Power In
• AC Output

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The Castle GA257B SONUS Industrial Dosemeter is an advanced personal noise exposure meter designed to monitor the sound exposure of employees at work in accordance with the Noise at Work Regulations 1989. It can measure sound from 75dB to 140dB at frequencies between 20Hz and 8kHz. The meter is capable of measuring sound exposure (LEpd) and peak (Zpeak) simultaneously and can also give readings for projected LEpd over an eight-hour exposure. Dose is provided as a percentage and as dose-per-hour whilst actual sound pressure readings can be shown in either decibels or Pa2h.

Frequency weighting is set at A but the criterion level and exchange level are user-adjustable. The one-line, eight-digit screen shows readings clearly and can also show time elapsed, battery level and overload warnings. Operation is undertaken via the simple push-button interface and the 12-hour battery life is perfect for monitoring personal noise exposure over an entire at work. As a SONUS meter, the Castle GA257B is very compact and sturdy enough to withstand the knocks of day-to-day use in industrial environments and complies with regulations such as IEC 61252-1:1993. A pocket clip allows an employee to carry the dosemeter throughout his/her working day.

Castle part number: GA257B

• Measuring range: 75dB to 140dB
• Max linear range: 67dB
• Frequency range: 20Hz to 8kHz
• Integrated sound level exposure
• Peak, dose, dose per hour, projected dose
• Adjustable criterion level and exchange rate
• Meets Noise at Work Regulations 1989
• Simultaneous average and peak measurement
• 12-hour battery life

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Monitoring your employees Personal Sound Exposure has never been easier. Capture, record and calculate workers’ noise exposure with Pulsar’s innovative NoisePen Dosemeter – a Personal Sound Exposure Meter (PSEM) that is designed to make your job easier.

• 30 hours battery life – start your recording with peace of mind knowing the battery will last multiple shifts.
• Easy to use – there are no buttons, screens, or cables meaning employees are unable to tamper with the device.
• Schedule your recordings – you can fit your NoisePen to your employees at the start of a shift and have the recording start/finish whenever you like.
• Covers all essential Noise at Work parameters – such as LAeq, LEP,d, % Dose and TWA for compliance with occupational noise regulations
• Meets industry standards – meets IEC 61252:1993 and ANSI S1.25:1991 standards
• No additional reader of charger needed – This NoisePen comes with everything you need to complete your measurements
• License-free software included – Easily complete your report with our free AnalyzerPlus software

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We are the only company in India providing Environmental Noise Assessment Services conforming to International Standards. Adept has excelled in providing a complete range of services related to environmental noise coupled with unique engineering expertise in noise control. Having completed prestigious projects viz. EIA study for the laying of New Corridor for Indian Railways, our reputation is based on providing clients with thorough, accurate and reliable assessments and predictions, coupled with innovative and very low cost noise control methods.

A complete cycle of Environmental Noise and Vibration Services involves:

• Detailed Surveys
• State-of-art equipment based monitoring
• Accurate and reliable prediction
• Environmental impact assessments
• Mitigation and environmental noise control

The environmental noise and vibration assessments application areas include :

• Proposed residential developments near roads,
• Railways, industry, airports, proposed new road and railway schemes, industrial premises, airports,
• New or extended quarries, landfill sites, extended industrial sites and facilities,
• Construction noise and vibration reduction, demolition noise and vibration assessment and control.