Nor1216 outdoor microphone for permanent installations
Nor1217/1218 outdoor microphones for semi-permanent installations

• Outdoor microphone for community and aircraft noise.
• Fulfils IEC 60651, IEC 61672 class 1 and ANSI S1.4 type 1.
• Protection class IP 55 (dust and water).
• Easy to calibrate with a normal ½” sound calibrator.

The outdoor microphones Nor1216, Nor1217 and Nor1218 share the same acoustical and weather protection design for use in all-weather conditions. The Nor1216 is mainly designed for permanent outdoor applications due to the build in heater, whereas the Nor1217/1218 are designed for semi-permanent application where low power consumption normally is important. The Nor1217 uses the standard preamplifier and microphone from the Nor140 and Nor150, making it a very cost effective solution. For the Nor1218 use the microphone and preamplifier supplied with Nor131.

The microphone systems are well protected from rain, snow, dust and insects, satisfying IP 55 requirements.

Further, compared to a standard measurement microphone, the outdoor microphone Nor1216/1217 improves the measurement accuracy by reducing the wind noise and by improving the directional response for sound from different directions.

The Nor1216/1217 are designed for use with the Nor140 and Nor150 sound analysers. The instruments allows a direct connection via Nor1408A, a standard Lemo 7 pin microphone cable supplied in various lengths. It has selectable build in frequency correction for both community and airport applications. The instruments also supports the SysCheck verification and power for the heater resistor in the Nor1216.

The Nor1218 is designed for use with the Nor131 sound analyser. The instrument allows a direct connection via Nor4531 microphone cable supplied in various lengths. There is no need for extra adapter box or power supplies. The Nor131 has selectable frequency correction for both community and airport applications.

All types satisfy Class 1 specification requirements according to IEC 61672-1 and related national standards when used with Nor131, Nor140 and Nor150.

The microphone is intended for vertical mounting only since the act of gravitation forms a part of the rain protection system. The reference direction may, however, be selected to be vertical or horizontal based on the applied frequency compensation.

The outdoor microphone may be calibrated with a normal sound calibrator suitable for ½” working standard microphones (WS2) without the need for extra accessories. Access to the microphone cartridge is easily gained by dismounting the upper part of the microphone.

The base is made of an electrical insulating material. The microphone body will be fully insulated from the mounting mast thereby reducing pick-up of electrical hum and noise.

For verification of proper operation, the microphone is equipped with a system check facility (SysCheck), where an electrical signal applied on one of the terminals are returned after passing through the complete signal chain, thus verifying proper operation of the microphone cartridge, preamplifier and microphone cable.