CK:306 Sound Level Meter
  • Sound Level Meter to Class 2 of IEC 61672-1:2002
  • Sound Pressure Level SPL (Now referred to as L in IEC 61672) 35dBA to 130dBA
                40dBC to 130dBC
  • dB(A) & dB(C) Frequency Weighting
  • Fast Time Weighting
  • Displays Sound Level with 'A' Weighting
  • Maximum Hold Function
  • AC Output for use as a front-end
  • Can take an external DC power supply
The CR:306 is one of the better entry level instruments available.
Removable ˝” microphone
Microphone can be actuator tested
Instrument can be electrically tested
Complies with IEC 61672 Class 2
Supplied with a Certificate Of Calibration
Not a Certificate Of Conformance
Simple to use
APPLICATIONS :
  • Simple Noise Surveys
  • Sound Level Checks
  • Fire Alarm Testing
  • Air Conditioning
  • Basic Motor Vehicle Measurements
  • Audible Alarm Checks
Not recommended for many Occupational Noise situations.
  • No Peak
  • Not integrating (Leq)
The CK:306 Sound Level Meter Measurement Kit is supplied with the following accessories:
CR:306 Type 2 Sound Level Meter
CR:514 Class 2 Acoustic Calibrator
UA:239 45mm Windshield
CP:65 Carrying Pouch
Batteries
User Manual
Certificates of Calibration
Pen
Optional Accessories
CK:250 Carrying Case
RION NA -28  Sound Level Meter 
1/1 and 1/3 Real Time Analysis
RION DA-20  Data Recorder
RION NL SERIES Sound Level Meters
CR:261S Vehicle Noise Measurement Kit
The CR:261S is a Class 1 Sound Level Meter that has been designed to meet the requirements of ISO 5130-1982 & §29 StVZO for the noise testing of motor vehicles.
Designed to be used in workshops, garages and test laboratories alike, the CR:261S is a robust instrument that is simple to operate whilst providing the measurements needed.
Features
Vehicle noise testing to ISO 5130:1982 ‘Acoustics - Measurement of noise emitted by stationary road vehicles - survey method” & §29 StVZO
Ideal for static noise testing of cars, trucks & motorbikes for motorsport
Class 1 according to IEC 61672-1:2002
PTB Type Approval to IEC 61672- 2:2003
Simple Operation with 3 buttons
Remote control for measurement and display of three measured levels
Automatic calibration
Available in English & German versions*
PTB Type Approval to IEC 61672
The CR:261S is the first Cirrus Research plc Sound Level Meter to carry full PTB Type Approval to the latest IEC 61672 Standard for Sound Level Meters.
The approval is to DIN EN 61672-1:2002-10 and DIN EN 61672-2:2003-08 and the PTB reference number is PTB-1.72-4025043.
Product Information
The CR:261S Sound Level Meter is usually supplied as part of the CK:261S Vehicle Noise Measurement Kit. Containing the Sound Level Meter and a full range of accessories, the CK:261S Kit is the ideal tool for the measurement of noise according to ISO 5130 and §29 StVZO.
  The CK:261S Measurement Kit contains the following items:
CR:261S Vehicle Noise Sound Level Meter
CR:515 Acoustic Calibrator
UA:237 Windshield
CK:250 Carrying Case
ZL:261S Remote Control
User Manual & Certificates of Calibration
Tape Measure & Positioning Template
Tripod
The CK:261S can also be specified with the CR:511F Acoustic Calibrator and the CR:590 Reference Barometer which carry PTB Type Approval to IEC 60942:1988.
The measurement kit includes a Tripod to allow the microphone to be positioned at the correct height along with an alignment tool to position the microphone at the correct angle to the exhaust.
A tape measure is also provided to ensure that the vehicle under test is positioned away from objects as specified by ISO 5130:1982

Quick, simple and easy to use
With just three button pushes you can start a measurement and get all of the information you need to assess and deal with your noise issues.

You investment is protected as we've designed all of the optimus instruments to be upgradable with new and additional measurement functions.

What ever you need, it's already measured.
All of optimus sound level meters will measure all of the available functions at the same time.

This means that no matter what the display is showing, you can be sure that you can't choose the wrong function.

For example, if you've set the instrument to display the Leq and you need to see the Octave Bands, just press the right arrow key once and you'll see the octave band.

Press again to see the Dose view which will give you all of the information you need to meet OSHA, MSHA or ACGIH.
For Occupational and Industrial Noise. The optimus red instrument are perfect for any occupational or industrial hygiene noise regardless of whether your meeting UK, EU, AUS/NZ or OSHA Regulations
For simple noise measurements. For basic noise measurement and noise enforcement, an optimus yellow is the ideal instrument.
High performance but simple to use

  • Simple to use with an ergonomically designed case
  • Meets the latest sound level meter standards - a future proof investment
  • Simultaneous measurement of all available parameters so you can't forget to choose the right function
  • Multiple Integrators measure to a range of noise standards at the same time such as OSHA (HC & PEL), UK Noise at Work Regulations & EU Physical Agents Directive
  • Data logging option with 4GB memory can store over 10,000 measurements
  • Real-time octave filters (CR:161C & CR:162C) to select hearing protection
  • High resolution OLED colour screen with large, clear information
  • VoiceTag audio recording of notes, comments and information
  • NoiseTools software compatible with the latest Microsoft Windows operating systems

From the 1st March 2007, all Cirrus Research plc noise measurement equipment, is supplied  with a standard 2 year warranty. This can be extended by a further 10 years if the equipment is serviced and recalibrated every 12 months by an Authorised Service & Calibration Centre. In the Australasia Region this is provided by Instrulabs Pty. Ltd., the exclusive Cirrus Research plc Distributor, Service & Calibration Centre for Australasia.