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Sound and Vibration Instrument Hire and Calibration

Norsonic 116 Specifications


 
Norsonic 116 Sound Level Meter
 
Nor 116   Precision Sound Analyser - Class 1 £ 12 a day *
 

Overall Accuracy :


The complete instrument including preamplifier Norsonic 1201 and microphone cartridge Norsonic 1220 meets the requirements in BS EN 60651 type 1, BS EN 60804 type 1. Unless stated otherwise, all levels given in the specifications below refer to a microphone sensitivity of 50 mV/Pa or -26 dB re 1 V/Pa corresponding to the Norsonic microphone cartridge 1220 normally delivered with the instrument.
 

Analogue Input :


Connector : 7 pin Lemo fitting preamplifier type 1201
Preamplifier supply voltage : ± 7 V
Polarisation voltage : 0 or 200 V ± 1%, selectable from menu
Max input voltage : ± 10 V PEAK, maximum = ± 15 V
Input impedance : 161 kΩ : 120 pF : AC-coupled
 

Noise :


A-weighted : < 3 µV : 10 dBA
C-weighted : < 6 µV : 16 dBC
 

Measurement Range :

with preamplifier 1201, microphone 1220
A-weighted : 17 to 135 dB, up to 140 dB for peak
C-weighted : 22 to 135 dB, up to 140 dB for peak
 
The measured figures are at least 5 dB above the noise floor. Higher levels may be measured using an attenuator Norsonic 1260 or a less sensitive microphone. A 10 m extension cable, Nor-1408 may be used between the preamplifier and instrument without correction. Longer cables may influence the measurement of high level and high frequency signals
 

Analogue Outputs :


Flat and A-weighted signal outputs, AC are provided. Output impedance max. 100 Ω min. load impedance 2 kΩ Shorting the terminals will not affect measurement accuracy. FSD corresponds to approximately 0.83 V.
 

Measurement Ranges :


For microphone sensitivity in the range -24.1 to -34.0 dB re 1 V/Pa the total measurement range for the instrument is divided in five ranges with 70 dB overlap
10 to 90 dB
20 to 100 dB
30 to 110 dB
40 to 120 dB
 

Accuracy of range settings :

<0.2 dB between any gain step at 1 kHz
The total measurement range corresponds to 3 µV to 3 V RMS, up to ± 10 V peak, at the input terminal. By selecting microphone sensitivity setting in 0.1 dB steps in the range -84.0 to +15.9 dB re 1 V/Pa, the total displayed range may be set in 10 dB steps between -30 to +90 dB and 60 to 180 dB; peak up to 190 dB.
 

Overload Detectors :


Instantaneous and latched overload indication.
 

Level Detector :


Simultaneous detection of A and C-weighted levels. Levels from 80 dB below to 7 dB above FSD are indicated. Resolution 0.1 dB. Time constant F, S or I. Displayed functions are instantaneous level, minimum level, maximum level, equivalent continuous level and sound exposure level within the selected measurement period
Crest factor : Minimum 10 at FSD, increasing for lower levels
Linearity range : 80 dB according to IEC 804 - type 1 from 5 dB above to 75 dB below FSD
Pulse range : 83 dB according to IDC 804 - type 1
 

Peak Detector :


Simultaneous detection of A and C-weighted peak levels
Dynamic range : from 10 dB above to 57 dB below FSD
Accuracy : ± 2 dB
 

Integration Time :


The measurement time is selectable in 1 second step from 1 s to 99 hours 59 minutes 59 seconds. Integration setting time is less than 1 s. Measurement periods down to 1/8 s in level vs time mode. On activating the PAUSE function, the instrument will cancel acquired data recorded up to 10 seconds before the switch was operated
 

Marker :


If level versus time mode is selected, a marker may be placed at different points along time axis for identification purposes.
 

Graphical Display :

LCD, 64 x 128 pixels.
 

Data Memory :


Non-volatile memory powered by main instrument batteries, even if the voltage is too low for normal operation. Batteries must be replaced within 2 minutes to retain stored information. Storage of up to 245,000 measurement Stored values may be recalled and displayed or transferred via the serial interface.
 

Level Distribution :


Class width : 0.5 dB
Range : 169 classes from 80 dB below, to 3 dB above FSD. The upper and lower classes have extended ranges
Calculation of percentage levels : 0.1 : 1 : 5 : 10 : 50 : 90 : 95 and 99%, interpolated to 0.1 dB resolution
 

Displayed Functions :


A and C-weighted measured simultaneously.
Time constant selectable, other functions measured in parallel.
The levels may represent a complete measurement record from the start to the end, or shorter time periods set by the selected time resolution. A number of subsequent periods form a level versus time record
 

A-weighted Measurements :


SPL Fast : SPL Slow : SPL Impulse : Leq : SEL : LeqI : SEL I : Max F : Max S : Max I : Min F : Min S : Min I : Peak : Statistical Distribution 0.1 : 1 : 5 : 10 : 50 : 90 : 95 and 99% values
 

C-weighted Measurements :


SPL Fast : SPL Slow : SPL Impulse : Leq : SEL : LeqI : SEL I : Max F : Max S : Max I : Min F : Min S : Min I : Peak
 

Displayed Settings :


Measurement duration, range and setup information
Overload information. Battery voltage and battery low indication
Run-time since battery change, calendar and time of day.
 

Calendar/Clock :


The instrument contains a real time clock running from internal batteries
Typical lifetime : > 10 years
Accuracy : ± 2 min per month
 

I/O Interface :


RS-232 digital interface for instrument control, data exchange and printout
Baud rate : 150 : 300 : 600 : 1200 : 2400 : 4800 or 9600 bit/sec
Interface circuit may be switched off to save battery power
 

Video Output :


By application of video-adaptor type 244, the graphical display may be shown on an external RGB or VGA monitor
 

Power Supplies :


Internal : 2 x Lr61, 9 V alkaline batteries
Typical battery lifetime : 8 hours for Alkaline, with RS-232 interface off
Battery voltage and operating-time since change of battery is indicated
Socket for external DC supply : 11 to 25 V.
 

Environmental :


Temperature Range : -10 to +50 °C
Humidity Range : 10 to 90% RH, provided no condensation
Effects of Vibration : If the instrument is subject to vibration, it is recommended to use extension cable between the preamplifier and the instrument body. The vibration will mainly affect the microphone which is most sensitive to vibration applied perpendicular to the diaphragm. Typical values are 55-65 dB for acceleration values of 1 ms-2 perpendicular to the diaphragm
EMC : fulfills EN 50081-1 : EN 50082-1
Safety : IEC 61010
The effect due to a magnetic field of 80 A/m is negligible
 

Dimensions and Weight :


Weight : approximately 610 grams including batteries
Depth : 28 mm
Width : 74 mm
Height : 234 mm or 365 mm including microphone / preamplifier
 
E&OE - specifications subject to change without notice.