4
LI0152 – 4 July 2017
Introduction
The G.R.A.S. 41AC-3 CCP Outdoor Microphone for Community & Airport Noise is a precision
microphone set (IEC 61672-1) for monitoring community noise and the noise of overhead
aircraft.
It can be used for monitoring of noise with 90 degrees of incidence, typically community noise.
With the proper correction data, it can be used for 0 degrees of incidence, typically noise from
overhead aircraft. A USB flash drive with correction data is part of the delivery.
It is waterproof, rated at IP-55, and can operate unattended over a wide range of weather condi-
tions and temperatures for a very long period, i.e. a year or longer.
It uses a G.R.A.S. 40AE-S2 1/2” Prepolarized Free-field Microphone, High Sensitivity and a
G.R.A.S. 26CA 1/2’’ CCP Standard Preamplifier with BNC Connector.
It has TEDS according to IEEE1451.4 template UDID 127-0-0-0U.
Important.
The 40AE-S2 microphone and its protective grid have been modified for the 41AC-3.
Therefore, microphone and grid cannot be replaced by standard items.
Delivered Items
1/2" Prepolarized Free-Field Microphone, High Sensitivity
40AE-S2
1/2’’ CCP Standard Preamplifier with BNC Connector
26CA
O-ring for preamplifier
OR2038
USB flash drive with correction data for 0° (resolution: 1/12 octave)
Wind Screen
AM0378
Top cone
-
Upper housing
-
Lower housing
-
1” pole mount adapter
RA0286
Tripod Adapter
GR1096
Tripod thread adapter
SK0017
