Microphones/preamplifiers

Nor1229

Free-field microphone

Nor1229 is a ½” free-field, high-sensitivity, self-polarised Class 2 measurement microphone designed for cost-efficient environmental noise compliance and continuous monitoring applications.

It is particularly well suited for multi-channel noise monitoring systems, building and occupational acoustics, and other setups that require reliable Class 2 accuracy with self-polarised operation.

Unlike many other Class 2 microphones in this segment, Nor1229 uses a nickel membrane and a stainless-steel housing, delivering stable performance with low sensitivity to environmental influences such as temperature variations, static pressure changes, and humidity.

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Specifications

Cartridge size: ½” inch
Main standard: IEC 61672 Class 2
Polarisation voltage: 0 volt
IEC 61094-4 Designation: WS2F
Nominal sensitivity: 40 mV/Pa
Frequency response: ±3 dB 20-10 kHz
Maximum SPL (3% dist): 146 dB
Self noise: 24 dB(A)
Capacitance: 13 pF
Temperature coeff. (250 Hz): <-0.01 dB°C
Max. temperature: 80 °C
Static pressure coeff.: ±0.03 dB/kPa
Relative humidity coeff. (no condens.): ±0.006 dB/%

Diameter: 13.2 mm
Length: 16.6 mm
Weight: 7 g

Environmental noise

Reliable noise monitoring with sound level meter, stand-alone terminals or large-scale systems.

Building acoustic

Building acoustic is about the sound that travels between rooms - something you'd rather avoid.

Room Acoustics

Room acoustics is about the sound quality in a room, for example in a concert hall.

Sound Intensity

Measure sound level and direction, even in challenging acoustic environments.

Sound Power

Sound Power is about how much sound energy a source emits per unit of time, measures in watts.

Noise at Work

Noise measurement at the workplace for easy mapping and documentation of noise levels

Calibration

How we calibrate

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Calibration

Why calibrate?

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Nor1229

Free-field microphone

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Applications

What are you going to measure?