Cirrus Research plc

- Model CK:675 and CK-685 - Environmental Noise Measurement Kits

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The latest environmental noise measurement kits from Cirrus provide a robust, reliable solution for short, medium and long-term measurements in any environment. Protecting your sound level meter and microphone capsule from adverse weather and environmental conditions, the kits provide power, security and connectivity for your Optimus Sound Level Meter under any conditions giving you accurate, informative and actionable data that allows you to stay compliant and informed, wherever you are. When combined with the power of the industry-leading Optimus Sound Level Meters, the new outdoor kits provide a powerful and cost-effective way to stay in control of noise levels in any environment.

Applications
  • Unattended outdoor noise measurements
  • Noise monitoring in remote areas
  • Construction site noise monitoring
  • Environmental impact assessments
  • Wind Farm noise monitoring
Key Features of all versions
  • Take noise measurements outdoors in all weather conditions
  • Provides protection for the sound level meter & measurement microphone from adverse conditions
  • Easy to transport & install with a secure, lockable case
  • Flexible power options using internal batteries & external power
Additional features provided by the CK:685B version
  • Get real-time notifications to the Optimus Cloud Notifications App to help you manage and control noise levels
  • Simple setup & configuration using a standard SIM card & a data connection
  • Download measurements remotely to the NoiseTools software
  • GPS location data stored with each measurement
  • Modem with worldwide certification
Features provided by the Optimus Green Sound Level Meters
  • Options of Class 1 or Class 2 instruments
  • Acoustic Fingerprint triggers with markers & audio recordings
  • Level, Rate-of-change, Frequency or Tonal noise-based triggers*
  • 1:1 & 1:3 Octave Bands*
  • Tonal noise detection*
  • Data logging of all parameters simultaneously
  • 4GB standard memory with 32GB option
  • Triggered audio recording with pre & post triggers

*Some features are dependent upon the type of Optimus Sound Level Meter used.

Real-time notifications with Optimus Cloud

What is Optimus Cloud?

Optimus Cloud is a web-based platform that allows Cirrus noise measurement instruments to communicate with either the NoiseTools desktop software, the Optimus Cloud Notifications App or a web page on a hand-held device such as a smartphone or tablet.

Optimus Cloud works with the CK:685 Environmental Noise Measurement Kits and the Optimus Green Sound Level Meters.

Stay on top of your noise measurement with real-time notifications

When used with an Optimus Green Sound Level Meter, Optimus Cloud allows real-time notifications to be sent directly to the Notifications App, removing the need for costly SMS subscriptions.

By using the power of the level, rate of change and frequency-based triggers within the Optimus Green instruments, notifications can be sent when specific noise conditions occur.

Trigger rules can be as simple or complex as needed. For example, triggers can be set to activate when:

  • The measured LAFmax exceeds 65dB(A) for more than 5 seconds or
  • When the accumulated noise energy has reached 75% of an hourly limit or
  • When the 125Hz 1:3 Octave Band has exceeded 60dB AND the 63Hz 1:1 Octave Band has exceeded 70dB

The power and sophistication provided by the triggers within the Optimus Green Sound Level Meters allows almost any noise condition to be monitoring and notifications sent when those conditions are breached or exceeded.

Optimus Cloud allows these triggers notifications to be sent quickly and easily to the Notification App, which is available for iOS & Android, giving you the power to stay informed and in control of your noise measurements.

The CK:670 outdoor noise kit has been designed to protect the sound level meter and the microphone capsule from adverse weather and other containments that may affect the measurements.

The robust, lockable case contains the sound level meter and a battery pack capable of powering the instrument for 7 days.

A further battery pack can be added quickly to extend the operation to 14 days and the batteries can be hot-swapped. Each battery pack contains an intelligent charging system to maximize the performance and maintain the operating life over a long period.

The case can be locked for security when measurements are being made and can be used to transport all of the parts of the system. The case also has space for the outdoor microphone, cable, an acoustic calibrator, documentation and other accessories that may be needed as well as for the sound level meter. The outdoor microphone mounts onto a standard tripod.

  • Fully weather protected outdoor noise measurement kit
  • Purpose designed for use with the Optimus sound level meters
  • Provides weather protection for an optimus green sound level meter & microphone
  • Hydrophobically coated windshield for optimum weather protection
  • Battery power for 7 days operation with one standard battery pack (supplied)
  • Additional battery pack provides an additional 7 days power for up to 14 days operation
  • External power connection for longer operation
  • Secure lockable case with space for all standard instrument accessories
  • Standard 10m microphone cable
  • Optional microphone extension cables up to 100m
  • Optional tripod available

Unattended environmental noise measurements

The environmental noise measurement kits provide weather protection for the sound level meter and the microphone, allowing for noise measurements over long periods where the equipment is unattended.

This allows effective, accurate noise measurements to be made where it’s not possible to have staff on-site with the equipment at all times.

  • Robust and secure case protects the Optimus Sound Level Meter
  • Carry out noise monitoring even when you can't be on site
  • Calibrated, accurate measurement data lets you make more effective decisions
  • Download information into NoiseTools directly or remotely, giving you access to your data when you need it
Construction Site Noise Monitoring

For construction sites, receiving real-time alerts when pre-set noise limits have been exceeded, or are close to being exceeded, can be an effective noise control process.

As this information can be provided in real-time (either to staff on-site or to a remote office) it can enable site managers to investigate the source of the noise and to take quick, effective actions to remedy the issue.

The Optimus Cloud Notification App provides real-time notifications and alerts, allowing for effective control of construction site noise levels.

  • Configure triggers in the Optimus Green to match site noise limits
  • Stay informed as noise levels approach those limits by utilising triggers and notifications
  • Receive real-time alerts through Optimus Cloud direct to the Notifications App on your phone or tablet
Construction Site Noise Monitoring

For construction sites, receiving real-time alerts when pre-set noise limits have been exceeded, or are close to being exceeded, can be an effective noise control process.

As this information can be provided in real-time (either to staff on-site or to a remote office) it can enable site managers to investigate the source of the noise and to take quick, effective actions to remedy the issue.

The Optimus Cloud Notification App provides real-time notifications and alerts, allowing for effective control of construction site noise levels.

  • Configure triggers in the Optimus Green to match site noise limits
  • Stay informed as noise levels approach those limits by utilising triggers and notifications
  • Receive real-time alerts through Optimus Cloud direct to the Notifications App on your phone or tablet
Noise Monitoring in Remote Locations

In many environmental noise monitoring applications, having the ability to download measurements remotely, when the equipment is located far away, can be vital.

The CK:685B variants include the remote communication option and allow for measurement data to be downloaded, the instrument configured and real-time alerts to be sent to the Optimus Cloud Notification App.

  • Deploy noise measurement stations to any location or environment and be confident that you'll gather accurate, informative and actionable data
  • Where measurements are to be made over a long period, use external power to provide weeks or months of noise logging capability
  • Download summary measurement data remotely to the NoiseTools software via the modem and Optimus Cloud allowing you to stay informed about the status of the equipment and on-going measurements
Environmental Impact Assessments

For environmental impact assessments such as a BS4142 application, measurements when noise sources are not operating (over a weekend for example) can be critical in determining if there is significant impact when the site is in operation.

By using an environmental noise measurement kit, data can be gathered over extended periods when noise sources are and are not operating, allowing more robust assessments to be made.

  • Measure noise levels over long periods to cover both on and off conditions for the noise sources under investigation without having to be with the equipment
  • Gather accurate, informative noise data regardless of the weather conditions or the environment that the equipment needs to be left in
  • Configure triggers in the Optimus Green Sound Level Meter to activate when known noise sources are active, whether you're on site or not.
  • Receive real-time notifications when triggers are activated and store high-resolution audio recordings, allowing you to determine the source and type of noise being measured
  • Quickly identify and highlight noise sources in the NoiseTools software to determine if penalties should be applied, creating reports & exporting data for analysis in other software packages
Wind Farm Noise Monitoring

Logging data over long periods before, during and after the construction of a wind farm can often be the only way to effectively judge the impact of operations and the environmental noise measurement kits can assist in this task.

The advanced triggers in the Optimus sound level meters can provide real-time alerts when overall levels or specific frequencies are exceeded as well as when tonal noise is detected.

  • Use the power of the Optimus Green Sound Level Meters to log detailed noise data over long periods of time
  • Make measurements over long periods by adding external power to the kits from a battery, mains or solar power
  • Use the advanced triggers in the Optimus Green to detect tonal or frequency-based noise sources
  • Send real-time alerts & notifications to the Optimus Cloud App when triggers are activated
  • Download measurement data without having to visit the equipment using the modem, Optimus Cloud and the NoiseTools software

CK:675B Environmental Noise Measurement Kit

The CK:675B version of the Environmental Noise Measurement Kit is supplied complete with all of the parts needed to effective noise measurements outdoors, in any environment.

Simply add an Optimus Sound Level Meter and Acoustic Calibrator and you have a cost effective, robust system that can help you make accurate, actionable noise measurements anywhere, at any time.

What's in the kit?
  • Secure, lockable weatherproof Case
  • MK:172 Outdoor Microphone with 10m cable & UA:253 windshield
  • 2 x CB:673 12V Batteries & Battery Charger
  • User Manual
  • Certificate of Conformance
CK:685B Environmental Noise Measurement Kit

For remote access to the instrument, the CK:685 kits include a GPS receiver and modem which, when used with Optimus Cloud, allow for measurements to be downloaded to the NoiseTools software, the instrument configured and alerts sent when pre-set noise conditions are met.

Alerts can be sent directly to the Optimus Cloud Notification App, via email or SMS1 text, all of which can be easily configured by logging into the Optimus Cloud.

Features over the CK:675B Kit
  • Modem to download measurement remotely & send notifications to Optimus Cloud
  • GPS Receiver stores location data alongside the noise measurements
  • Automatic synchronisation of the instrument to the GPS signal
What's in the kit?
  • Secure, lockable weatherproof Case
  • MK:172 Outdoor Microphone with 10m cable & UA:253 windshield
  • Worldwide certified modem for remote data download & real-time notifications
  • GPS Receiver for location data & time/date synchronisation
  • 2 x CB:673 12V Batteries & Battery Charger
  • User Manual
  • Certificate of Conformance

  • Acoustic Measurements : Determined by Optimus Green Sound Level Meter
  • Microphone Capsule : From Optimus Sound Level Meter. The microphone capsule provided with the sound level meter should be used with the MK:172 outdoor microphone to maintain the calibrated measurement chain.
  • Connectors : Microphone input from MK:172 Outdoor Microphone External Power
  • External power : 12-18v DC
  • Weight & dimensions :
    • CK:675B
      • 465x180x355mm
      • 14.1/31 lbs including 2 x CB:673 batteries, charger & MK:172 Outdoor Microphone
    • CK:685B
      • 65x180x355mm
      • 14.5 kg/32 lbs including modem, 2 x CB:673 batteries, charger & MK:172 Outdoor Microphone
    • CB:673 Battery
      • 4.4 kg/9.7 lbs
    • MK:172 Microphone
      • 335mm with 90mm UA:253 coated windshield & birdspike
      • Includes 10m cable with connector

The CK:685B version of the environmental noise measurement kit include a modem for remote data connection to the Optimus Cloud. This modem provides multi-region approvals and certifications and can be used with a standard SIM card.

  • Modem Type - Multitech MultiConnect MTC-H5-B0-1
  • Compliance - FCC Class B (US), IC (Canada), R&TTE (EU Economic Area, A-Tick (Australia/NZ), and IFT (Mexico)
  • Safety - UL 60950-1 (US), cUL 60950-1 (Canada), IEC60950-1 (EU Economic Area), AS/NZS 60950-1 (Australia/NZ)
  • Network Support - PTCRB, GCF approved module, AT&T, T-Mobile, Rogers, Bell, EU carriers, Pending: Telus, Telstra
  • SIM Card Type - Mini SIM; 1.8v & 3V

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