RC:100B doseBadge User Manual
Contents
1. 335 6167 40 01 33 5 61 67 40 56 sales cirrusresearch fr www cirrusresearch fr Unit 2 Bridlington Road Industrial Estate Hunmanby North Yorkshire YO14 OPH United Kingdom Tel Email Web 44 0 1723 891722 sales cirrus environmental com www cirrus environmental com2. CR 511E The variation due to static pressure may be up to 0 7 dB from the nominal value and therefore the static pressure must be known in order to make this correction This figure can be obtained e g from your local airport However if measurements are required to the highest accuracy a barometer should be purchased The CR 590 Barometer is available for use with the CR 511E Acoustic Calibrator CR 511E Barometric Pressure Correction 0 4 4 1 T T E 0 3 j 0 2 0 1 0 0 1 dB 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 650 700 750 800 850 900 950 1000 1050 1100 mB CR 511E Acoustic Caliibrator User Manual Specification Frequency Sound Level Level Accuracy Standardisation Distortion Variation with Temperature Variation with Barometric Pressure Operating humidity Operating Temperature Storing temperature Long Term Drift Effective Volume Cavity Diameter Battery Weight with battery Dimensions Page 9 lkHz 1 5 94dB amp 104dB re 20uPa 0 3dB at 23 C and 101 3kPa IEC 942 Class 1L Less than 296 To IEC 942 Class 1L See Curves or CR 590 barometer 10 to 9096 rel hum 10 C to 50 C 20 C to 60 C Better than 0 1dB 40 cm 1 125 inch with Q3 Adaptor for 1 Microphones 1 x 9v 6F22 Neda 1604 220g 135mm x 48mm Page 10 CR 511E Acoustic Caliibrator User Manual Appendix 1 Free Field Correction
3. CR 511E Acoustic Caliibrator User Manual Page 1 User Manual for the CR 511E Acoustic Calibrator Cirrus Research plc dedicated to noise measurement This manual the software to which it relates the program code and drawings are all Copyright Cirrus Research plc 1989 2012 Page 2 CR 511E Acoustic Caliibrator User Manual The content of this manual any illustrations technical information and descriptions within this document were correct at the time of going to print Cirrus Research plc reserves the right to make any changes necessary without notice in line with the policy of continuing product development and improvement No part of this publication may be duplicated reprinted stored in a data processing system or transmitted by electronic mechanical photographic or other means or recorded translated edited abridged or expanded without the prior written consent of Cirrus Research plc No liability is accepted for any inaccuracies or omissions in this manual although due care has been taken to ensure that is it complete and accurate as possible Accessories supplied by Cirrus Research plc have been designed for use with the instrumentation manufactured by Cirrus Research plc No responsibility is accepted for damage caused by the use of any other parts or accessories In order to take account of a policy of continual development Cirrus Research plc reserves the right to change any of the information contained in this p
4. Cirrus Research plc should be used For half inch microphones the type Q3 is available with this adaptor the calibrator can be certified officially Calibrating a Sound Level Meter Ensure that the batteries in both the calibrator and the Sound Level Meter are in good condition Do not attempt to calibrate the Sound Level Meter if battery levels are low Push the microphone of the Sound Level Meter with the appropriate adaptor if required into the cavity at the end of the calibrator Ensure the microphone is fully inserted into the cavity and is past the O ring seal The microphone should be parallel to the body of the calibrator Turn on the calibrator and select the reference level required In most situations this will be 94dB although the CR 511E units provide an additional 104dB reference level Check which level the Sound Level Meter is set to accept during calibration Most modern Sound Level Meters have electronic calibration with the level adjusted automatically Adjust the Sound Level Meter to the correct level where applicable There are several factors to be considered when correcting the value generated the calibrator These are 1 A correction for the type of microphone capsule 2 A correction for any changes in barometric pressure from 1013mBar 1013 hPa In most situations the Sound Level Meter will be fitted with a free field microphone The correction required for the specific microphone fitted to the Sound Level
5. Meter will be given in the operation manual for that instrument However the MK 215 and Page 6 CR 511E Acoustic Caliibrator User Manual MK 224 microphone capsules which are fitted to the majority of Cirrus Research Sound Level Meters have a correction of 0 3dB when used with the CR 511E The CR 511E Acoustic Calibrator is designed to be used mainly with Microphone Capsules Calibration corrections are listed below for the Cirrus Research plc 1 Capsules and two microphone capsules commonly used in test labs Microphone Type Calibration Correction Effective Calibration Level MK 202 0 3dB 93 7 dB MK 215 0 3dB 93 7 dB MK 216 0 3dB 93 7 dB MK 226 0 3dB 93 7 dB MK 224 0 3dB 93 7 dB B amp K 4134 OdB 94 0 dB B amp K 4180 OdB 94 0 dB Example An example of the procedure used to calculate the value required is shown below Level 94 0dB Microphone Correction Barometric Altitude Correction Level 94 0dB 0 3dB Correction for 700mBar Level 94 0dB 0 3dB 0 8dB Level 92 9dB Different microphones will have different correction values Also the use of different calibrator adaptors may alter the final values required Please check the operation manual for the Sound Level Meter or microphone concerned for details CR 511E Acoustic Caliibrator User Manual Page 7 Changing the Battery The CR 511E acoustic calibrator uses a single 9v battery This type of battery is known as 6F22 or NEDA 1604 It
6. When calibrating a microphone which is to be used for free field measurements a small correction may be necessary to compensate for the difference between the microphone s free field response at zero degrees or head on incidence and the pressure level generated by the calibrator The correction is typically 0 3dB for 17 inch microphones making the effective calibration level 93 7dB The table below shows the correction values for the standard microphones of Cirrus Research plc Calibration corrections are listed below for the Cirrus Research plc 12 Capsules and three microphone capsules commonly used in Calibration Laboratories Microphone Correction Values Microphone Type Calibration CorrectionEffective Calibration Level MK 202 0 3dB 93 7 dB MK 215 0 3dB 93 7 dB MK 216 0 3dB 93 7 dB MK 226 0 3dB 93 7 dB MK 224 0 3dB 93 7 dB B amp K 4134 OdB 94 0 dB B amp K 4180 OdB 94 0 dB B amp K 4192 OdB 94 0 dB Example An example of the procedure used to calculate the value for an MK 224 microphone is shown below Level 94 0dB Microphone Correction Level 94 0dB 0 3dB Level 93 7dB Different microphones will have different correction values Please check the operation manual for the Sound Level Meter or microphone concerned for details CR 511E Acoustic Caliibrator User Manual Page 11 CE Certificate of Conformity Cirrus Research plc Hunmanby UK CE Certificate of Conformity CE Manufacturer Cirrus Res
7. as no influence on the accuracy of the calibration The CR 511E Acoustic Calibrator meets the requirements of IEC 942 it corresponds to type 1L which means it is type 1 if the correction values for the air pressure are observed CR 511E Acoustic Caliibrator User Manual Page 5 Operation The CR 511E acoustic calibrator has provision for the calibration of a variety of microphones of various diameters The nominal cavity has a diameter of 1 125 inches A standard QC 3 adaptor allows the unit to be used with a inch microphone Other adaptors are available for 1 inch 1 4 inches 20 mm and 10 mm The CR 511E unit is supplied with one adaptor as standard Typically this is the QC 3 adaptor for microphones The sound pressure generated by the calibrators are 94dB and 104cB However when calibrating a microphone which is to be used for free field measurements a small correction may be necessary to compensate for the difference between the microphone s free field response at zero degrees or head on incidence and the pressure level generated by the calibrator The correction is typically 0 3dB for 15 inch microphones making the effective calibration level 93 7dB A second correction is required if the barometric pressure is not 1013 hPa A table shows the correction values for the standard microphones of Cirrus Research plc In order to adapt different microphones to the CR 511E at the accuracy stated the adaptors available from
8. earch plc Acoustic House Bridlington Road Hunmanby North Yorkshire YO14 OPH United Kingdom Telephone 44 1723 891655 Equipment Description The following equipment manufactured after 1 January 2007 CR 511E Acoustic Calibrator Along with their standard accessories According to EMC Directives 89 336 EEC and 93 98 EEC meet the following standards EN 61000 6 3 2001 EMC Generic emission standard for residential commercial and light industrial environments EN 61000 6 1 2001 EMC Generic immunity standard for residential commercial and light industrial environments Signed Dated 1 January 2010 SU S O Rourke Director Page 12 CR 511E Acoustic Caliibrator User Manual Warranty Information 10 11 12 13 14 This document is a summary of the full warranty document and explains the Cirrus Research plc warranty in ordinary English not in legal or complex terms The warranty covers any acoustic instrument such as a sound level meter acoustic calibrator real time acoustic analyser or personal sound exposure meter dosemeter manufactured by Cirrus Research plc after 1st September 2011 The warranty covers all faults on the instrument except the microphone for the period defined in para 4 below including minor accidental damage except to the microphone The period of the warranty is 2 two years or 104 weeks from the date of purchase as a new instrument from Cirrus Research plc or their forma
9. is also commonly known as PP3 1 Put a small rod usually a screwdriver through the two holes in the end cap and gently pull the cap from the body 2 Pull out the end plate which has the switch and battery holder attached 3 The battery type 6F22 PP3 can now be eased out of its holder and replaced Make SURE you check the correct polarity of the battery which clips into the press studs on the battery holder Battery type One battery type 6F22 is used This is called NEDA 1604 in the USA and parts of Asia It is often called PP3 in the UK and the old Commonwealth The battery should preferably be an alkaline battery not an ordinary dry cell Whilst an ordinary cell is adequate for operation the low price of long life batteries makes their use sensible A long life battery is not only more efficient but is less prone to leak and damage the calibrator The material of the end ring and cavity is easily eaten away by battery leakage The battery is 9 volts when new and will operate the calibrator down to about 6 volts Page 8 CR 511E Acoustic Caliibrator User Manual Performance Information Variation with Temperature The acoustic outputs of the CR 511E Acoustic Calibrator will alter with changes in temperature The tolerances shown below are for reference conditions of 1013mBar 1013 hPa and 65 Relative Humidity Class Temperature Range Tolerances Class 1L 5 C to 35 C 0 3dB Barometric Pressure Correction for
10. lly approved distributors OR 130 weeks from the date the instrument passed its final manufacturing inspection at Cirrus Research plc whichever is the shorter Any rechargeable battery only has the battery manufacturer s one year warranty however there will be a reduced charge for replacing rechargeable batteries during the annual Routine Verification process Commonly referred to as Annual Recalibration No warranty is offered for used equipment unless a special arrangement is made and a written confirmation of the warranty is given by Cirrus Research plc On completion of the routine verification by Cirrus Research plc the instrument will automatically be given an additional free one year warranty There will be a charge for this routine verification and the price is published in the Service Price List The customer is responsible for all shipping duty and other charges relating to the servicing and calibration of the instruments It follows that should the instrument be routinely verified by Cirrus Research plc every year the warranty is effectively continuous to a maximum of 15 fifteen years from the date of purchase Cirrus Research endeavour to ensure stocks of instrument components for the full fifteen year period but do not guarantee to do so as certain components do become obsolete or discontinued If a sub component becomes obsolete and stocks are depleted then Cirrus Research will endeavour to facilitate a repair but
11. mcs EE 10 CE Certificate of Conformity lseseeeieieseeseueuaeununeuuanuu nasus asnu sanus auras a sua uu annua 11 Equipment Description cccccecesceeeeeeceeeeeeeeeeeaeeeuaeeauaeeauaeeaueuaeeauaeeauaeeauaeeauaeeauaeueuaeeguanes 11 Warranty Information sseeesseseseeseueueuseneanunmaunuasu rininis unus uua u aua u uuu usua suu 12 Cirrus Research Offices ru ilei tir RaRRRR P RRRURE RA EEDRRARRRRERRRRRARERRROPIEERRRARRRSREERS 13 Page 4 CR 511E Acoustic Caliibrator User Manual Overview Accurate calibration of Sound Level Meters and Sound Measurement equipment is essential before and after each measurement to ensure the validity of any values recorded The CR 511E Acoustic Calibrator provides a cost effective yet accurate means of achieving this requirement The CR 511E unit can be used for all microphones suitable for this kind of calibration It has the ability to accept different cavity adaptors The CR 511E has a nominal cavity diameter of 1 125 inches A standard QC 3 adaptor allows the unit to be used with a inch microphone Other adaptors are available The approval by the German test office PTB is valid for the 1 2 inch adaptor The CR 511E provides two reference levels of 94dB 1 Pa and 104 dB 3 16 Pa It is therefore possible to judge the linearity of the instrument and to calibrate at high background noises The frequency is 1000 Hz therefore the frequency weighting of the instrument h
12. ublication without prior notice Produced by Cirrus Research plc Acoustic House Bridlington Road Hunmanby North Yorkshire YO14 OPH United Kingdom Copyright Cirrus Research plc 2012 Reference Number 12 04 CR 511E 01 Document Printing Date Thursday 16 February 2012 CR 511E Acoustic Caliibrator User Manual Page 3 eJ 4 Operation p 5 Calibrating a Sound Level Meter cece nnt tnnt trn rnrn ASEE AEEA REEERE hene esee nne 5 Changing the Battery leeessesesieseuseunusenuusuu Rana RR ARAS ARRA RR endnu RAI 4Ga Rau Ga Rau Sada d aa uua nn 7 Battery Type oa a arto ERRRGRY bate dev WRRAIRK ENA AANA EAEAN TA ENI EAA ENEAN TR ERRRIR EAEAN RR RR RIA NRRAIM RD AA 7 Performance I nformation esseeesieseiseseusenuasunuusuuuusauuususanuusu sau sau u sau u aua u usua uua 8 Variation with Temperature ssssssssssessssese ehe eene mesen esee mesie esie esie esie esee nee nnne 8 Barometric Pressure Correction for CR 511E sssssssssssssssssesmese enses eene nene 8 Je pbriil mee 9 Appendix 1 Free Field Correction eeseeseseesese sees enean unen uranium annua nane 10 Microphone Correction ValueS s sssssrersrsrrsrrtrttstrotrtttr srno ru rttr ernt e meine nememememesesie eene emet 10
13. will not offer the same length guarantee In the event of any dispute on the terms of the warranty Cirrus Research plc will accept pendulum arbitration by the United Kingdom Institute of Acoustics Ltd The warranty does not in any way reduce any legal right of the buyer or user of the sound level meter it is in addition to all legal rights determined by the European Union CR 511E Acoustic Caliibrator User Manual Page 13 Cirrus Research Offices The addresses given below are the Cirrus Research plc offices Cirrus Research plc also have approved distributors and agents is many countries worldwide For details of your local representative please contact Cirrus Research plc at the address below Contact details for Cirrus Research authorised distributors and agents are also available from the Internet Web site at the address shown below Main Office Cirrus Research plc Acoustic House Bridlington Road Hunmanby North Yorkshire United Kingdom YO14 OPH Telephone Fax E mail Web Site Germany Cirrus Research Dresden Karl Marx Str 11a 01109 Dresden Germany Telephone Fax E mail Website France Cirrus France Ltd 40 Bis Avenue Gabriel Faur 09500 Mirepoix France Tel Fax Email Web Cirrus Environmental 44 0 1723 891655 44 0 1723 891742 sales cirrusresearch co uk www cirrusresearch co uk 49 351 316 0950 49 351 316 0949 vertrieb cirrusresearch de www cirrusresearch de
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