Uses
- Sound measurements according to IEC 61672 and ANSI S 1.4 – 1983
- Cost-effective sound measurements
| Features
- Specially designed for Hand-held Analyzer Type 2250-L
- Sensitivity: 50 mV/Pa
- Prepolarized
- Frequency: 6.5 Hz to 16 kHz
- Dynamic Range: 15 to 142 dB
- Excellent long-term stability
- High resistance to humidity
|
½-inch Free-field Microphone Type 4950 is a prepolarized condenser microphone, designed for accurate and reliable sound measurements as required for sound level meters in accordance with IEC 61672 Class 1 and ANSI S 1.4 Type 1. The construction of Type 4950 makes it the ideal choice for cost-effective, portable instruments intended for use under different conditions including humid and polluted atmospheres.
The use of a stainless-steel, press-fit mounted diaphragm guarantees both robustness and corrosion resistance. The microphone is fitted with a removable protection grid. It does not need an external polarization voltage, thus eliminating the need for cumbersome high-voltage DC supplies and at the same time enabling the use of inexpensive 2-wire system (DeltaTron®) input.
The microphone is rear-vented in order to balance out the static pressure; the venting also determines the lower limiting frequency. Type 4950 comes with a calibration chart showing typical frequency response and individual sensitivity value.
For a full Description and Specifications, see
Product Data
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