Limiter
Limiter / Level recorder for continuous operation
Features
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Compact, robust design for continuous outdoor operation
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Battery life > 200h
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Unlimited storage capacity on commercial database server
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Measured data available on-line via web interface
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Removable microphone
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Easy operation (self-configuring sensor network
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Any number of measuring points
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Single, wide measuring range
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Sound level curve
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Real-time 1/3 octave analysis
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Audio data recording
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Automatic calibration function
As a modified Tango sound level meter with accuracy class 1 according to IEC 61672 our Tango_NMS monitoring station provides the device basis for the web-based long-term monitoring platform INSIGHTNOW. Tango_NMS was developed for the efficient monitoring of noise created by communities, commercially operated facilities and industrial plants as well as road and rail traffic.
The data measured by the Tango_NMS measuring stations are organised via a ZigBee wireless network and transferred to the central INSIGHTNOW server via an integrated or external 4G modem. The distance between the individual Tango_NMS measuring stations may be up to 300m. ZigBee repeaters or additional Tango_NMS measuring stations may be used to extend the transmission range.
The sound level meter’s low power consumption and its additional communication unit allow for 240 hours of operation from an internal battery. This operation time may be extended with an optional back-up battery or solar panel by an other 40 hours.
Due to their low weight and small dimensions installation on public lamp poles is possible. The low power demand combined with the integrated battery and charger unit enables direct feeding from the street lights.
Measurement and service data are available for further use via the INSIGHTNOW portal (website). The INSIGHTNOW portal enables user management with different levels of access as well as data display and evaluation anywhere. Apart from the instantaneous sound levels at the individual measuring points, level curves of the last days, weeks or even years are available as well as the station’s audio data for listening-in. Furthermore, service data as battery capacity, transmitting power, transmission quality and information on the communication between the measuring stations are transferred. Another integral part is the level exceedance reporting via SMS and email.