Real Time Noise Monitoring Systems are developed for monitoring outdoor noise. The main improvement of Real Time Noise Monitoring Systems is the built-in electrostatic actuator which can be used for remote system check. The internal signal source can be controlled by serial communication to generate actuating signals with 5 frequencies (250 Hz, 500 Hz, 1 kHz, 2 kHz and 4 kHz) and sound pressure level of 90 dB. In order to avoid frequent acoustic calibration of outdoor microphone, electrostatic actuator can be used for whole system check including microphone, cable and measuring instrument.
The frequency response of OM243 is optimized for 0° incidence, primarily for aircraft and airport noise measurement. The OM263 is optimized for 90° incidence, primarily for urban, traffic and industrial noise measurement. Both models have been specially designed to achieve the free-field frequency response in specified direction of incidence within the limits of IEC 61672-1.
Both models meets the IP55 ingress protection rating. The windscreen, internal rain hood and dust mesh can fully protect the microphone against wind, rain, snow, dust and other severe weathers. Built-in electric heater can automatically work in low temperature and high humidity environment to avoid exceeding the working temperature range of microphone and prevent condensation. The bird spike prevents impact of perching birds to the measurement.
Features:
- Optimized for 0° and 90° incidence to meet IEC 61672-1.
- Delivered with Individual calibration data.
- Built-in electric heater can make the microphone work under low temperature and high humidity environment.
- The serial port can control the actuator and read out the temperature & humidity.
- IP55 enclosure to protect against wind, rain, snow, dust and perching birds.
- The protection kit can be quickly removed for calibration.
- Built-in electrostatic actuator and signal source for remote system check.
- ICCP power supply, low self-generated noise, typical noise level is ~17 dBA.
- It can be installed on the tripod by 1/4-inch thread on the bottom.
Applications:
- Aircraft and airport noise measurement.
- Urban, traffic and industrial noise measurement.
- Acoustic measurement in severe weathers.