The MK:427 Noise Sensor

Environmental Noise Monitors

The MK:427 Noise Sensor from Cirrus Research is an accurate, reliable and weather proof self-contained outdoor noise monitor, specifically designed for integration with other data logging and monitoring systems.

  • Self-contained noise sensor for integration with external data loggers
  • Purpose designed for long term environmental noise monitoring
  • Industry standard 4-20mA output
  • Automatic calibration with electrostatic actuation
  • Weatherproof and suitable for most outdoor applications with a range of mounting solutions and an IP65 rating
Mast option *

Choose from a long mast or short mast option

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Description

The MK:427 Noise Sensor

with 4-20mA Current Loop Output

Unlike a conventional Sound Level Meter, the MK:427 Noise Sensor converts the noise level in decibels into an industry standard 4-20mA output, which can be connected to standard DCS/SCADA based systems to add a noise measurement capability.

The analogue electronics are highly reliable and operate without any user intervention. No specialist acoustic knowledge is required when using the MK:427 Noise Sensor, simply power-up the device and the measured noise level is continuously fed to the output.

Many industrial plants have a variety of process sensors strategically placed around their site so that safety, environmental impact and efficiency can be monitored and managed in real time from one of more control rooms.

Applicable Standards
Class 1 to IEC 61672-1:2002

Output type
A-weighting sound pressure level output in the form of a 4-20mA loop

Frequency weighting
dB(A) to IEC 61672-1:2002

Time weighting
Factory-set to Fast (F) IEC 61672-1:2002

Automatic calibration
Electrostatic actuator system with DC voltage control

Measurement range
30 – 100dB(A)
Other options are available on request

Current loop output
Iout = 0.1mA/dB

Dimensions
1m length

Weight
4.5Kg

Mounting
240mm x 30mm diameter pole
Mounting kit provided
2 U-brackets, 4 nuts, 3 Jubilee clips

External power
+12V DC in

Output cable
10m as standard.
Other lengths are available on request

IP rating
65

Additional information

Weight 4.50 kg
Dimensions 100 cm
Attributes

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Brand

Cirrus Research

Application

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Monitoring Duration

Long-term

MK427 Noise Sensor

User Manual

MK427 Noise Sensor

Datasheet

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