The measurement microphones are optimized for a flat, free-field response in the frequency range 5 Hz – 20 kHz. Models for acoustic measurements of up to 155 dB are available.
All microphones are omni-directional and 48V phantom powered. The Sound Level Meter microphones include an electronic data sheet. The Automated Sensor Detection (ASD) of the Analyzer automatically reads this data sheet, and recognizes the microphone model, sensitivity and calibration data. This ensures accurate measurement results.
Omni-directional, free-field microphone
Outdoor Measurement Microphone
Phantom power 48 VDC
Frequency range 5 Hz – 20 kHz
Outdoor Measurement Microphone
The Outdoor Measurement Microphones offer a weather-protected measurement solution for the Sound Level Meter allowing acquisition of environmental noise data in outdoor applications. The corrosion-free polymer housing, wind screen, waterrepellent membrane and bird spike provide excellent protection from rain, wind, dust and perching birds.
The Outdoor Measurement Microphones M2230-WP and M2340-WP fulfill the Class 1 requirements according to IEC 61672 and ANSI S1.4 for horizontal and vertical sound incidence. For compliance with horizontal sound incidence a spectral correction is employed in the associated Sound Level Meter. The Outdoor Measurement Microphone M4262-WP fulfills the Class 2 requirements accordingly.
The outdoor microphones consist of a measurement microphone and the applicable weather protection:
M2230-WP: M2230 + WP40-90 Weather Protection
M2340-WP: M2340 + WP40-90 Weather Protection
M4262-WP: M4262 + WP62 Weather Protection
Overview Outdoor Measurement Microphones
Type
Classification
IEC 61672
ANSI S1.4
Microphone Capsule
Dynamic range [dB]
Typical Applications
M2230-WP
Class 1 / Type 1
Certified
1/2" detachable
16-137
Outdoor Noise Monitoring
Legal Application
M2340-WP
Class 1 / Type 1
Certified
1/2" detachable
17-138
Outdoor Noise Monitoring
with system self-test (CIC)
M4262-WP
Class 2 / Type 2
1/4" fixed
32-140
Outdoor Noise Monitoring
Live Sound
Features
Class 1 and Class 2 Outdoor Measurement Microphones for horizontal and vertical sound incidence according IEC 61672 and ANSI S1.4
Excellent protection from rain and dust (IP54), wind and perching birds
Built from corrosion-free materials
Removable top section for easy microphone calibration
Standard tripod mount, optional pole mount
Effective outdoor protection
The 90 mm wind screen protects the measurement microphone from rain and dust while reducing wind-induced noise. The seamless design of the water-repellent membrane under the wind screen ensures perfect protection from rain and dust.
We recommend to use our weather protection ASD cables:
600 000 306 – WP ASD Cable 5m with IP65 female XLR connector, for use with WP40/WP62
600 000 307 – WP ASD Cable 10m with IP65 female XLR connector, for use with WP40/WP62
600 000 308 – WP ASD Cable 20m with IP65 female XLR connector, for use with WP40/WP62
System self-test
The Outdoor Measurement Microphone M2340-WP is system self-test (CIC) enabled. Automated self-tests may be performed by NoiseScout, the unattended noise monitoring solution, in combination with the Sound Level Meter. This ensures reliable operation and precise measurements.
Robust design / Easy calibration
The upper section of the weather protection is snap-on mounted and can thus be easily removed by hand for manual calibration of the measurement microphone.
NTi Audio # 600 040 140
Low Noise Measurement Microphone M2914
The measurement microphone M2914 has a particularly low residual noise level of just 6.5 dBA and is designed for acoustic measurements of very low sound pressure levels.
NTi Audio # 600 040 240
(requires additionally the ICP Adapter ASD, # 600 010 223)
Maximum sound pressure level @ distortion factor 3%, 1 kHz
Typical Applications
M2914
Frequency Response
Class 1 / Type 1
1/2"
6.5 dB(A) SPL
100 dBSPL
Low Noise Measurement
Configurations
Configurations Measurement Microphones
M2230-WP
Certified class 1 outdoor measurement microphone according to IEC 61672 and ANSI S1.4 with metal diaphragm; consists of M2230 Microphone and WP30 Weather Protection.
M2340-WP
Certified class 1 outdoor measurement microphone according to IEC 61672 and ANSI S1.4 with metal diaphragm; system self-test (CIC); consists of M2340 Microphone and WP30 Weather Protection.
M4262-WP
Class 2 outdoor measurement microphone according to IEC 61672 and ANSI S1.4; consists of M4262 Microphone and WP62 Weather Protection.
Accessoires
Weather Protection
Protect your measurement microphone from rain, wind, dust and perching birds with a professional outdoor weather protection kit. The corrosion-free…
The calibration certificate lists the individual product data with serial number. The calibration and adjustment procedures follow the documentation and…
As a research laboratory invested in supporting communities through real time noise monitoring, I am very happy to exclusively use NTi instruments. Not only are the robust, easy to use, and provide high quality data, the customer service is outstanding and their team will work with you to find the most cost effective and appropriate solutions needed for problems ranging from easy to difficult.
Erica D. Walker MSc, ScD, RGSS Assistant Professor of Epidemiology, Brown University School of Public Health
I’ve been using the XL2 for over 15 years for short-term and long-term measurements in all kinds of indoor and outdoor environments all across the country. The meter gets me what I want, when I need it. It’s not only the best value for acoustical measurements, it’s the best tool period. I bet my company and reputation on XL2 results and it has not let me down. You would be crazy not to consider adding NTi instruments to your toolkit.
Herb Singleton, P.E., INCE Bd. Cert., President, Cross-Spectrum Acoustics
We at Constructure GmbH use two XL3 sound level meters for noise monitoring during demolition work. We are very satisfied with these highly user-friendly instruments, the online monitoring in the MeasurEye Cloud, the good advice and qualified support. Factory calibrations at NTi Audio are also handled very smoothly and without complications.
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional
Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
