CR:243/1 Permanent Noise Monitor
For long term noise monitoring applications
The CR:243/1 is a permanently installed Noise Monitoring Terminal which can either have a fixed mast or be attached to a building.
The CR:243/1 is ideal for long term operation, and therefore has significant weather protection as well as physical security. The CR:243/1 outer enclosure is constructed from glass fibre, and is resistant to most environmental pollutants. The enclosure is sealed to IP65 standards, and all connections to the unit are made by sealed, armoured conduit to prevent damage or water ingress.
Normally, the CR:243/1 unit is used with the MK:426A Outdoor Microphone, which provides the acoustic signals to the main instrument, and allows fully automatic calibration using an electrostatic actuator system.
The MK:426A Outdoor Microphone, designed as a partner to the CR:243/1 unit, also features double environmental protection. The unit incorporates an electrostatic actuator system to provide automatic calibration of the entire measurement chain.
Environmental noise data can be downloaded to the host computer using our NEW Noise Hub software. This allows dial up telephone lines to be used for communications, and means that the noise monitor need only be contacted when required, typically once every day. However, if communication cannot be made with the instrument, the large memory allows measurements to be made without loss of information.
Click here to see examples of permanent installations
The CR:243/1 is ideal for long term operation, and therefore has significant weather protection as well as physical security. The CR:243/1 outer enclosure is constructed from glass fibre, and is resistant to most environmental pollutants. The enclosure is sealed to IP65 standards, and all connections to the unit are made by sealed, armoured conduit to prevent damage or water ingress.
Normally, the CR:243/1 unit is used with the MK:426A Outdoor Microphone, which provides the acoustic signals to the main instrument, and allows fully automatic calibration using an electrostatic actuator system.
The MK:426A Outdoor Microphone, designed as a partner to the CR:243/1 unit, also features double environmental protection. The unit incorporates an electrostatic actuator system to provide automatic calibration of the entire measurement chain.
Environmental noise data can be downloaded to the host computer using our NEW Noise Hub software. This allows dial up telephone lines to be used for communications, and means that the noise monitor need only be contacted when required, typically once every day. However, if communication cannot be made with the instrument, the large memory allows measurements to be made without loss of information.
Click here to see examples of permanent installations
Key features
- Ideal for permanent installation on buildings
- Suitable for long term monitoring in all weather conditions
- Proven technology & reliability
- Fully weather protected
- High physical security, ideal for urban locations
- Extensive communications options
- Flexible installation options
- PTB Type Approval & IP65 Certification
Advanced recognition templates are used to monitor specific noise events, and the multiple Environmental groups allow continuous measurement of the noise climate. The unit will also remove recognised noise events from the measured noise climate information, showing the impact of those noise events.
The instrument will also store and download diagnostic information, as well as any additional measurement functions that have been added to the standard unit.
The unit can also integrate weather monitors enabling the user to download integrated noise and weather data. This data is downloaded with the noise measurements as required.
The CR:243/1 has been type approved with their associated accessories by the PTB in Germany. In addition to individual component type approval, systems have also been passed by the PTB after installation.
This requires the entire system from the microphone capsule to the computer with the software to provide consistent, accurate information, and represent a significant achievement.
