PRODUCT DATA

Outdoor Measurement
Microphones
The Outdoor Measurement Microphones offer aweather-protected measurement solution for ourSound Level Meters 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 withhorizontal sound incidence a spectral correction isemployed in the associated Sound Level Meter. The
Outdoor Measurement Microphone M4261-WP fulfills the Class 2 requirements accordingly.
The outdoor microphones consist of a measurement
microphone and one of three weather protection
possibilities:• WP30-90: #600 040 060• WP30-150: #600 040 090
Outdoor Measurement Microphone WP30-90
with ASD Cable and Stand• WP61: #600 040 080

Features— Class 1 and Class 2 Outdoor Measurement Microphones for vertical and horizontal soundincidence 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 mountwww.nti-audio.com

Oct 23

Page 12PRODUCT DATAEFFECTIVE OUTDOOR PROTECTION
The 90 mm or 150 mm wind screen protects the measurement microphonefrom rain and dust while reducing wind-induced noise. The seamless designof the water-repellent membrane under the wind screen ensures perfectprotection from rain and dust.

SYSTEM SELF-TESTThe Outdoor Measurement Microphone M2340-WP is system self-test (CIC)
enabled. Automated self-tests may be performed by NoiseScout, theunattended noise monitoring solution, in combination with one of our Sound
Level Meters. This ensures reliable operation and precise measurements.

ROBUST DESIGN / EASY CALIBRATIONThe upper section of the weather protection is snap-on mounted and canthus be easily removed by hand for manual calibration of the measurement
microphone.
WP30-150

TECHNICAL SPECIFICATIONS
ModellM2230/2340WP-90

Microphone typeClass 1

Class 1Class 2

16dB(A) - 139dB /17dB(A) - 138dB

16dB(A) - 139dB /17dB(A) - 138dB

27dB(A) - 146dB

Frequency range

5 Hz - 20 kHz

SupplyDimensions

M4261-WP

Omni-directional, free-field

Classification
IEC 61672, ANSI S1.4
Dynamic range

M2230/2340WP-150

Phantom power 48 VDC with XLR connector
379 mm x 36 mm(14.9“ x 1.4“),
3/8“ tripod mount

411 mm x 36 mm(16.2 x 1.4“),
3/8“ tripod mount379 mm x 36 mm(14.9“ x 1.4“),
3/8“ tripod mount

90 mm (3.5”)

150 mm (5.9”)

90 mm (3.5”)

Windscreen diameter
Weight430 g (15.2 oz.)

413 g (14.6 oz.)

Environmental

IP54 in vertical position, protection against rain, all directions

Order Information
NTi Audio #600 040 050 / 230 600 040 050 / 230+ 600 040 060+ 600 040 090

Optional Accessory•

Pole Mount Adapter PM 1”# 600 040 067(for pole diameter 25 - 33 mm, 1-1.3”)•

Pole Mount Adapter PM 1 1/4”
# 600 040 068(for pole diameter 32 - 44 mm,1.25-1.75”)

All information is subject to change without notice.
M2230, M2230-WP, M2340-WP, WP30-90, WP30-150, M4261 M4261-WP, WP61 are trademarks of NTi Audio.

www.nti-audio.com

600 040 070+ 600 040 080

Outdoor Microphonewith Pole Mount
Adapter and pole(cable inside the pole)

Page 22