The MK440 Environmental Noise Monitor

Environmental Noise Monitors

The Environmental Noise Monitor MK440 from Cirrus Research is an exceptional instrument for measuring and monitoring environmental noise levels. Its compact size and lightweight design make it easy to deploy in any outdoor environment, providing accurate and reliable measurements of noise pollution.

  • Designed specifically for integration into existing systems
  • Industry-standard 4-20mA output
  • No user-intervention required to record noise levels
  • Approved for use in non-incendive Class 1 Division 2 areas
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Description

The MK440 Environmental Noise Monitor

A compact and easy-to-deploy solution for environmental noise

The Environmental Noise Monitor MK440 from Cirrus Research is an exceptional instrument for measuring and monitoring environmental noise levels. Its compact size and lightweight design make it easy to deploy in any outdoor environment, providing accurate and reliable measurements of noise pollution. As an advanced environmental noise monitor, the MK440 is equipped with advanced functionality that enables continuous monitoring and real-time data analysis of noise levels. This allows for quick and effective decision-making in situations where noise pollution is a concern.

The MK440 is the perfect tool for professionals working in a range of industries, including construction, transportation, and industrial settings. Its small size and light weight make it easy to transport and deploy, while its advanced features make it an ideal choice for any noise monitoring project. With the Environmental Noise Monitor MK440, you can be confident that you are getting precise and accurate measurements of environmental noise levels, making it an essential tool for anyone conducting noise monitoring projects.

The MK440 Environmental Noise Monitor builds on the existing technology of the MK427 Noise Sensor, with the added ability to be integrated into an existing PLC data logging and monitoring system with ease.

Unlike conventional sound level meters, this environmental noise monitor converts the noise level into an industry-standard 4-20mA output, allowing you to add noise measurement capability to an already-established system.

With no dials, controls or displays, the MK440 is incredibly easy to install and use. Once in place and connected to your system, you’re good to go!

Approved for use in hazardous environments

The MK440 Environmental Noise Monitor has been certified non-incendive for use in Class 1 Division 2 hazardous environments (USA, Canada), which includes locations like mines, gas pumps and stations, processing plants, and food and beverage manufacturing locations.

Approved by FM Approvals, the MK440 Environmental Noise Monitor can be used to monitor noise levels in potentially dangerous environments, without fear of flammable vapor, gas or liquids being ignited by the instrument.

Output type

A weighting SPL in 4-20mA loop

Frequency weighting

dB(A)

Time weighting – selectable at factory

Fast, slow

Measurement range – selectable at factory

  • 64-134 dB
  • 54-124 dB
  • 44-114 dB
  • 34-104 dB
  • 24-94 dB

 

Current loop out

lout = 0.1A/dB

Dimensions

440x118x84mm

Weight

1.8kg

External power

12 to 24V DC

Current

70mA

Cable entry

½” NPT or M20 Gland

Cable length

10m max

Operating temperature

-10 to +50⁰C

IP rating

65

Additional information

Weight 1.80 kg
Dimensions 44.0 × 11.8 × 8.4 cm
Attributes

Brand

Cirrus Research

Application

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Monitoring Duration

Long-term

MK440 Environmental Noise Monitor

User Manual

MK440 Environmental Noise Monitor

Datasheet

Non-incendive Certificate for MK440 (US)

Intrinsic Safety Certificate

Non-incendive Certificate for MK440 (Canada)

Intrinsic Safety Certificate

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