Ljudmätare Archives

Option 1: Built-in camera and GPS

text

The internal camera is meant for documentation purpose before or after a measurement. The picture files are stored in the same project files as the measurement it belongs to.

Event triggered pictures requires an external IP camera or camera found on devices such as smart phones or pads. Pictures captures during a measurement is marked as events in the L/t graph and can be view in Nor150 or in NorReview.

The GPS is used for position identification. Later software versions will also support exact time synchronisation. Time synchronisation is especially useful when several Nor150 units are used for capturing the same noise event, such as blast monitoring. The GPS position is stored as a part of the measurement file. It may also be set to be a part of the file name.

This option is not available as retrofit and must be ordered along with the instrument.

Option 2: Second channel

text

Input channel two is located on the left side of the instrument, well protected from dust and moisture by a rubber cover.

The second channel is a standard 7 pin Lemo connector with the same specifications as the main channel. It supports both standard 7 pin lemo preamplifiers as well as IEPE preamplifiers and accelerometers. Included is also SysCheck signal for check of outdoor microphones like the Nor1216 and Nor1217.

This option is not available as retrofit and must be ordered along with the instrument.

Option 3: 1/1 and 1/3 octave band filters

text

1/1 and 1/3 octave filters (0,4 – 20 kHz in 1/3 octave band) including multi-specter functionality in time profile A.
A 3 order analogue high pass filter with a -3 dB point at 3 Hz may be selected to avoid overloading the input circuitry from low frequency noise.

Option 4: Audio recording and markers

text

This option extension adds audio recording and marker management to the Nor150. In Nor150 you can replay the recording on the meter itself without any need of transferring the data to a PC. The option 4 adds a sophisticated but easy to use marker management indispensable for every environmental noise assessment tasks. The user can select up to ten makers, add names, colour and associates the marker to an action. The marker can either be a single or a toggle marker. The action can be; enable a reference tone, start a recording, take a picture or set one of the digital outputs found on the 15pin socket. It is easy to add markers on an ongoing measurement. Voice and text notes may in the same way as markers be added to an ongoing measurement. The markers can be moved or deleted. Markers may also be added after a measurement is elapsed.

The Nor 150 also offers six system markers that are automatically inserted in the Level versus time profile. These are; Measurement Pause marker, Measurement continue marker, Audio recording marker, Picture marker, Signal overload marker, Battery low marker, Event trigger marker.

The Nor150 is seamless integrated to the PC program NorReview (Nor1026) to further evaluate and calculate the noise data and to create customized reports.

Features

Single or dual channel audio recording
12 or 48Khz audio recording sampling rate
8, 16 or 24 bit audio recording resolution
0 to 60dB digital audio recording gain
0 to 120 sec audio recording pre-trigger
Sophisticated marker management system

Photo 1: Nor150 Option 4 – Audio recording and markers including 1 event trigger
Photo 2: Nor150 Option 4 – Audio recording and markers including 1 event trigger

Option 5: Sound Intensity

text

Sound intensity is a powerful measurement method in situations where traditional methods prove difficult or not feasible. With the new features of the Nor150, sound intensity measurements are significantly easier to accomplish than ever before and may actually be less time-consuming than corresponding sound pressure methods.

Nor150 equipped with the sound intensity option and the Nor1290 probe kit is a powerful tool for all types of sound intensity measurements, from high-precision laboratory conditions to demanding and rough field use.
Thanks to the unique phase correction algorithm, only a 12 mm spacer is necessary to cover the entire frequency range from 25 Hz to 10 kHz. This significantly reduces the time spent in-situ, and allows measurements of highly reactive sound fields.

Sound intensity is especially suitable for sound power measurements of non-movable machinery in industrial environments, measurements of driven machinery, industrial plant exhausts and pipes both indoors and outdoors.

In-situ building acoustics may benefit from the intensity technique, both for transmission loss and sound leakage detection. And for research & development applications, sound intensity provides powerful noise map visualisation.

Applications

Sound Power measurements in accordance with:
- ISO 9614
- ANSI S12.12
- ECMA 160
Noise Mapping
Noise Source locations

Features

Compliant to IEC 61043 Class 1.
Unique phase correction allows measuring 25 Hz to 10 kHz with single 12 mm spacer.
Full on-board support for ISO 9614-1 and 2 sound power measurements.
Remote control access to the system from a smartphone
Intuitive warning indicators makes sound power measurements easy.
Measurement-based improvement suggestions helps the user on the way, no need to consult the ISO standard.
Pause and back-erase with L(t)-graph.
Integrates with Nor850 visual mapping and reporting software for advanced post-processing.
Configurable measurement sequence.
Full editing noise mapping and reporting abilitiese).
Photo, text and voice annotation for individual segments.
Compatible with other brands of sound intensity probess

Option 7: Signal generator

text

Signal generator with sine, white, pink, band passed filtered noise.

Option 8: Reverberation time decay and calculations

text

Reverberation Time decay and calculation of T20 and T30 based on impulse or noise excitation. Requires option 3. Requires also option 7 if RT shall be based on noise excitation.

Option 9: Complete building acoustic mode

text

Complete Building Acoustic mode with microphone position room averaging in accordance with ISO 16283 as well as sound insulation indices calculated in accordance with ISO 717/1 and /2.

Requires options 3, 7 and 8.

Option 12: NorCloud

text

With this option you are able to connect the instrument to Norsonic’s cloud service; NorCloud.

NorCloud is a Norsonic system to collect, display and process sound level data.

When used together with Nor150 sound analyser, you can measure, analyse and report directly from your web browser.
Create projects, assign sound level meters to projects and configure settings such as audio recording, SMS/e-mail alarms and automatic reporting.
Norsonic stores your data safely and conveniently, but you are of course free to download your measurements.

Option 13: FFT

text

FFT sampling rate is 48 kHz with more than 16000 lines. Upper frequency is 22 kHz. Dynamic zoom from 1 – 64. The FFT calculation and 1/3 octave spectrum works in parallel.

Split view with FFT and 1/3 octave. The link cursor feature connects the cursor in FFT and 1/3 octave displays, making it easy to manoeuvre in the frequency domain.

Option 14: Ultrasound

text

Ultrasound option including 1/3 octave filters to 40 KHz, 1/1 octave to 31.5 Hz and AU network.

Requires option 5.

Option 17: STI calculation based on the STIPA method

text

The STI mode supports the latest revision of the STIPA standard, IEC 60268-16 revision 5.
Additional features are background noise correction and auditory correction.
Background noise correction can be turned on/off.
Auditory correction gives a lower score on the STI value if the STIPA noise signal is too loud or too low. It shall normally be turned on, but the latest revision of the standard recommends it to be possible to turn it off in some special circumstances.
The built-in signal generator generates the STIPA signal.
A complete measurement sequence takes only 21 seconds.

STIPA mode is easy and intuitive to use. The display is composed of a fixed view with two frames. The upper shows each frequency band, while the lower shows the measured values including a bar graph.

STIPA – By selecting the lower part of the display and pressing the TBL button, the two modulation indexes for each of the STIPA-octaves will be displayed.