Sigicom 080-02850-0 Manual Download Page 10

 

 

8                                         Copyright ©Sigicom AB 2003-2014 

 

2

 

General description 

The S50 Sound Level Meter is a class 1 precision sound level meter 
to be integrated with INFRA Field Monitoring System. It can 
simultaneously measure both maximum and equivalent sound 
pressure level (L

max

 and L

eq

, respectively). 

 
The S50 Sound Level Meter has an integrated random-incidence 
microphone for general purpose acoustic measurements, especially 
suitable to use in diffuse sound fields. The microphone has a large 
dynamic range and a wide frequency response. 
 
The S50 Sound Level Meter is to be connected to the INFRA Field 
Monitoring System by any of the available INFRA Sensor Cables. 
The Sensor Cable supplies the S50 Sound Level Meter with both 
electrical power and all necessary communication. 
 
 
 

 

S50 Sound Level Meter connected with  

INFRA Datalogger in a minimal configuration. 

 
 

Summary of Contents for 080-02850-0

Page 1: ...Manual Copyright Sigicom AB 2003 2014 Art no ML089B02850 0En INFRA S50 Sound Level Meter Art no 080 02850 0 Manual ver F Valid for firmware version 1 8 0...

Page 2: ......

Page 3: ...mers This Class B digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe B est conforme la norme NMB 003 du Canada EU customers This equipment complies with directives E...

Page 4: ...ile 12 4 Configuration and operation 14 4 1 Random incidence microphone 14 4 2 Mounting 15 4 3 Pressure reflection phenomena 15 4 4 Parameters 17 4 5 Measurements of low level sounds 20 4 6 Quick Star...

Page 5: ...Copyright Sigicom AB 2003 2014 3 A 5 Electrical test method 32 A 6 Overload handling 32 A 7 Power consumption 32 A 8 Mechanical data 33 A 9 Approvals 33 Appendix B Glossary 34...

Page 6: ...grated microphone The S50 Sound Level Meter is to be integrated with the INFRA Field Monitoring System See one example of this in the figure here below Example of a setup of the INFRA Field Monitoring...

Page 7: ...ng description and detailed description of S50 s standards and parameter settings It also includes a Quick start guide and how periodical testing is performed Chapter 5 Consider this Important informa...

Page 8: ...cally sent with for example GPRS to the database Possibility to connect more than one sound level meter to each Datalogger Selectable time interval of the interval data A trigger level for recording a...

Page 9: ...ikes Foam which protects your S50 from shock during transportation Calibration Document Please report immediately any damage or shortage to Sigicom AB Record the instrument s serial number You will be...

Page 10: ...grated random incidence microphone for general purpose acoustic measurements especially suitable to use in diffuse sound fields The microphone has a large dynamic range and a wide frequency response T...

Page 11: ...eously with the sound pressure level measurements for example vibration geophone in one direction vibration geophone in three directions air blast dust monitoring wind speed and direction air temperat...

Page 12: ...udden large pressure peaks Leq The time averaged sound pressure level over the selected interval time see below It has the formal symbol LAT IEC 61672 1 but for mainly historical reasons LAT is common...

Page 13: ...20 95 dBA 25 95 dBC 30 105 dBA dBC 40 115 dBA dBC 55 130 dBA dBC One of the level ranges can be selected at a time 3 5 Display devices S50 Sound Level Meter shall be connected to the INFRA Field Monit...

Page 14: ...r triggers The operator of the Datalogger fires a manual trig Recording post trig length is adjustable between 1 and 10 seconds Pre trig is always 1 second Transient data The microphone signal is tapp...

Page 15: ...d to the same Datalogger shares the transfer channel If the recording length is set short the transient memory will be splitted into two or more transient files This enables that more than one transie...

Page 16: ...e in the sound field The most ideal frequencies response is reached when the microphone is pointed 90 degrees off the direction of the sound source At normal diffuse field measurements the S50 shall b...

Page 17: ...ed when the S50 Sound Level Meter is to be mounted to a wall see picture below The distance between the wall and the center line at the top of the microphone is then 15 mm S50 Sound Level Meter mounte...

Page 18: ...and 17 mm between the center of the microphone and the wall The illustrated pressure level is relative to what should have been measured without any reflections Note that a maximal distance of 15 mm i...

Page 19: ...x and Leq FAST 30 105 dBA S03 Lmax and Leq FAST 40 115 dBA S04 Lmax and Leq FAST 55 130 dBA S05 Lmax and Leq FAST 25 95 dBC S06 Lmax and Leq FAST 30 105 dBC S07 Lmax and Leq FAST 40 115 dBC S08 Lmax a...

Page 20: ...es larger than its upper threshold level the the Lmax Lpeak signal is recorded in a transient file The INFRA functionalities SMS and Server messages can be activated such that each time the sound pres...

Page 21: ...vel on the Leq channel is active The threshold can be set to OFF which means that the upper threshold level of the Leq channel has no effect on the system 4 4 5 Record transient time This is the lengt...

Page 22: ...e and the measured sound can be considered as uncorrelated and don t add directly to each other The self generated noise level for the less sensible ranges is higher but is at least 5 dB below the low...

Page 23: ...n for the chosen standard select Interval time Record time and Upper threshold level value and on off It is also possible to change the customer string Note When doing a test or reference measurement...

Page 24: ...INFRA Datalogger see instruction below to read the current sound pressure level the first value is not valid due to start up effects Press live several times to be sure that the value is stable The d...

Page 25: ...s shipped care should be taken in repackaging it with the original factory provided packaging S50 shall never be subjected for sound pressure levels above 146 dB Note that maximum measured sound press...

Page 26: ...a is sent from the Datalogger to an Internet accessible database server where each Infra customer has its own database instance InfraNetManager connects to the database over Internet to access all dat...

Page 27: ...ce to Sigicom AB for calibration and adjustment See contact information below Recommended calibration interval is 12 months If sent to repair please carefully write down the description of the problem...

Page 28: ...o 080 01710 0 to 080 01714 0 Sensor bolts of different lengths For mounting of the S50 Sensor Level Meter on a wall Possibly used together with the Mounting Wedge see below Expansion Plug Sigicom art...

Page 29: ...the S50 Sound Level Meter shall be mounted to a wall By using the Mounting Wedge the sensing microphone will come very close to the wall which is a requirement in many cases Acoustic calibrator Class...

Page 30: ...2 0m 6 6ft art no 080 01102 0 Sensor drop cable 5 0m 16ft art no 080 01105 0 Sensor cable 15m 49ft art no 080 01115 0 Sensor cable 40m 131ft art no 080 01140 0 Sensor cables in other lengths on speci...

Page 31: ...Copyright Sigicom AB 2003 2014 29 9 Contact and support Address Sigicom AB Alfred Nobels All 214 SE 146 48 Tullinge Phone 46 8 44 99 770 Internet www sigicom com E mail support sigicom se...

Page 32: ...ds for class 1 sound level meters which implies that it is capable to measure the sound pressure level of a sinusoidal signal at the calibration frequency for each frequency weighting provided within...

Page 33: ...06 S16 30 105 dBC 30 106 30 106 30 106 30 106 30 106 S07 S17 40 115 dBC 40 116 40 116 40 116 40 116 40 116 S08 S10 S18 55 130 dBC 55 128 55 131 55 130 55 128 55 125 For a signal with crest factor of 1...

Page 34: ...tronics inside the S50 Under no conditions voltages above 10Vp p may be applied to the input adapter Use a high quality signal generator A 6 Overload handling Interval values are tagged with overload...

Page 35: ...ore Tex vent for pressure equalization of the microphone Dimensions 80 x 300 x 50 mm Protection class equivalent to IPx6 3 8 16 UNC thread for mounting on camera tripod Weight 750 g A 9 Approvals Fulf...

Page 36: ...different combinations of the parameters Acoustic quantity Time weighting Level range Frequency weighting Transient file If the measured signal becomes larger than the upper threshold level the Lmax...

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