Sound Level Meter

 

(sound level tester, Sound Dosimeter, Noise level meter, Programmable Sound Level Meter, Integrating Sound Level Meter, Noise Dose Meter, Sound Analyzer, Sound Level Analyzer, Octave band sound level meter, Sound Level Meter Datalogger, sound level meter calibrator, Sound Level Calibrator)

 

Class 2 (Type2)         Class 1 (Type1), Analyzer, Calibrator, Microphone

 

APPLICATION:  It is used to measure the sound level of machines, vehicles, traffic, architecture acoustics, environment noise and electric noise.

 

SR6661 Sound Level Meter Class 1

 

Features:

-Complies with IEC-61672 Class 1
-Accurate testing results
-RS-232 interface output are available
-Impulse sound level
-Latest digital signal processing technology
-Wide dynamic range
-High precision
-Modular design, on demand selection
-Wide warm design, operating temperature from -15ºC to 50ºC

 

Applications:

-Widely use in industrial noise surveys, machinery, vehicles, ships and etc
-May also be used in ambient noise
 

 

   

Model

SR6661-1

SR6661-1A

SR6661-1B

SR6661-1C

SR6661-2

SR6661-3

 Specialty

Precision pulse

Wide bandwidth

Low noise measurement

High noise measurement

Precision integral

 Super function

Sensitivity

-30dB

-28dB

-25dB

-53dB

-30dB

Frequency Weighting

A, C, Z

Time Weighting

F, S, I, Peak

 Frequency Range

 10Hz~16kHz

 10Hz~20kHz

 10Hz~16kHz

 10Hz~20kHz

10Hz~16 kHz

Meas. Upper Range

>140dB

>138dB

>135dB

>160dB

>140dB

Self generated Noise

<20dBA

<18dBA

<10dBA

<40dBA

<20dBA

Display

128mm*64mm LED

Output

AC, DC, RS232

Sampling Frequency

48kHz

Integrating Function

No

No

No

No

Yes

Yes

   Integrating Time

  No

Manual,10s, 1m, 5m, 10m, 20m, 30m, 1h, 2h, 4h,

8h, 12h, 16h, 24h

  1s~24h

  Main Parameters of Meas.

Lp, Lmax, Lpeak

 Lp, Lpeak, Lmax, Lmin, SEL, E

LXYp, LXeq, T, LXYmax, LXYmin,  LN (Note: X is A, C, Z; Y is F, S, I; N can be 1-99)SEL, Lex, 8h, Lavg, TWA, DOSE, E, SD, LXpeak

Statistical Analysis

Function

 No

 Optional

Yes

Over Limit Indication

Yes, limits can be settled

Data Storage

No

8000 Groups

Recording Function

No

Optional

Working Temp.

-15°C~50°C

   

SR6691 Real Time Sound Signal Analyzer Class 1

Features:
-Frequency Range: 10Hz~20KHz
-Complies with IEC-61672 class 1 and IEC-61260 class 1
-CE certificate
-Pocket-type real-time noise signal analyzer
-FFT analysis on noise or vibration
-90dB level linearity range
-Different software could be selected
-Auto-start and auto-end

Applications:
-Precision acoustics measurements
-Real-time frequency analysis in 1/1 and 1/3 octave digital filters
-Environmental noise measurement and 24 hour monitoring
-Reverberation time measurements
-Airport Noise Monitoring and data collect

   

Model

SR6691-1

SR6691-2

SR6691-3

SR6691-4

SR6691-5

SR6691-6

SR6691-7

SR6691-8

Fulfils Standards

IEC-61672 class 1 and IEC-61260 class 1

Microphone

1/2"Prepolarized Condenser Mic.(sensitivity: 50 mV/Pa)

Frequency Range

10Hz~20kHz

Range Gain

-10dB, 0dB, 10dB, 20dB, 30dB, 40dB, Range Error: ≤0.1 dB.

Self-generated Noise

<18 dB(A), 23 dB(C), 28 dB(Z)

Meas. upper Range

140dB

Peak C Sound Level Measuring Range

50~143dB

Frequency Weighting

Parallel (simultaneous) A, C, Z. Realized by digital filtering

Time Weighting

Parallel F, S, I, Peak C+, Peak C-

A/D Bits

24 bits

Level Linearity Range

>90 dB

Sampling Frequency

48 kHz

Display

240*160mm graphic LCD, with EL backlit

Display Refresh

1 Hz for value; 10 Hz for graph

Main Parameters of Integrating Measurement

Lxyp, Lxyi, Lxeq,1s, Lxeq,T, LAE, E, Cpeak+, Cpeak-, LAFmax, LAFmin, LAFeqT, LASeqT, LAIeqT, Note: X is A, C, Z and Y is F, S, I

Main Parameters of Airport Noise Meas.

LEPN, Td, Lmax

Display Resolution

0.1dB

Real-time spectrum analysis

Fulfils standards: IEC-61260 Class 1    
Filter type: Digital band-pass filter    
Meas. Parameters: Lfmi, Lfmeq, 1s, Lfmeq, T, Lxyp, Lxyi, Lxeq, 1s, Lxeq, T, LAE, E, Cpeak, Tm    
Note: fm is center frequency; X is frequency weighting A, C, Z. Y is time weighting F, S, I   
 

Real-time Analysis Speed

Approx. 47 times/s (It can simultaneously complete all center frequencies and A, C, Z weighting)

Statistical analysis Function

Statistical analysis software
Statistical analysis Menu: LAFp, LAFmax, LAF5, LAF10, LAF50, LAF90, LAF95, LAFmin, SD, LAeq1 s, LAeq, T, LAE, LAFeqT.
24 hours monitors menu: And Ld, Ln, Ldn

 Yes

 No

Yes 

No

Yes

 Yes

 Yes

 No

Real-time 1/1 OCT spectrum analysis

1/1 OCT spectrum analysis software for noise
Filters Center Frequency: 16 Hz~16 kHz

 No

 Yes

Yes

No

 No

 Yes

 Yes

 Yes

Real-time 1/3 OCT spectrum analysis

1/3 OCT spectrum analysis software for noise
Filters Center Frequency: 10 Hz~20 kHz

 No

 No

No

Yes

 Yes

Yes

Yes

Yes

FFT analysis function,

FFT analysis software for noise
Line Number: 200 lines on the display
Sampling Frequency: 48 kHz, 24 kHz, 12 kHz,6 kHz, 3 kHz, 1.5 kHz.
Upper Limit of Analysis Frequency: 18.75 kHz, 9375 Hz, 4687 Hz, 2344 Hz, 1172 Hz, 586 Hz
Bandwidth of each line: 93.75 Hz, 46.875 Hz, 23.438 Hz, 11.74 Hz, 5.8594 Hz, 2.9297 Hz
Average Method: index and linearity
Measuring Parameters: Lxyp, Lxyi, Lxeq,1s, Lxeq,T, LAE, E, Cpeak,Tm in every line 

No

 No

 No

No

 No

  No

 Yes

 No

Reverberation time measurement function

Reverberation time measurement software
Function: Reverberation time, EDT measurement by integrated impulse response method.
Fulfils Standard: ISO 3382
Measuring Parameters: T20, T30, EDT
Measuring Range: 0.20s to 20.00 s
Wave record time: 10 s or 20 s
Bandwidth of digital filters:1/1 OCT or 1/3 OCT
Center Frequency Ranges: 63 Hz ~ 16 kHz for Oct, 40 Hz ~ 16 kHz for 1/3 Oct
Date store: Max 12288 groups reverberation time, also translate to U disc

 No

 No

 No

No

 No

 No

 No

 Yes

Data Storage

64M bits Flash, instantaneous data, 1 second integral results and integral measuring result (maximum 12288 groups). Also can be stored in Flash disk or transferred to the Flash disk through USB interface

Integral Time

Manual, 10s, 1min, 5min, 10min, 15min, 20min, 30min, 1h, 4h, 8h, 24h or 1min~59 min

Print

Can print analytical results in the mini-printer, can also print the contents showed on LCD, mini-printer 40S is optional

Data Recall

Recalled any data

Intelligent Delete

Burst event may be deleted scientifically

Internal Clock

Error less than 1 min/month

Output Interface

Stereo Connector AC Signal Output
RS 232 interface to the mini-printer, or connected to PC
USB Interface, which can transfer the measuring results to PC, or the Flash disk

Power Supply

6×LR6 alkaline battery or rechargeable batteries, which can work for over 12 hours continuously. 9 V external power supply is also acceptable

Dimensions

310(H)*90(W)*38(D)mm

Weight

0.5kg (include batteries)

EMC

Type X

Working Temperature

-10°C~50°C

Relative Humidity

25~90%

Atmospheric Pressure

65kPa~108kPa

   

SR6228+ Color screen Sound Level Analyzer Class 1

Features:
- A handhold noise measuring instrument
- Multifunction and user- friendly sound level meter (sound level meter, integrating SLM, 1/1 OCT, 1/3 OCT analyzer, FFT analyzer, Noise dosimeter)
- 240×320 color screen
- Measurement range up to 142dB
- Synchronously do integrating measure, statistical, real-time 1/1 OCT, 1/3 OCT, FFT analysis and noise dosimeter measure
- Comply with IEC 61672 Class 1 and IEC61260 Class 1 and IEC 61252
Applications:
- Comprehensive noise measurements
- Environment noise certification
- Noise profile measurement of industrial noise
- Peak C sound level measurements
- Impulse noise measurements
- Workplace noise assessments
- Industry boundary assessments

Specifications:

Fulfils Standards

IEC 61672 Class 1, IEC 61260 Class 1, IEC61252:2002, IEC 60651:2001 Type 1, IEC 60804: 2000 Type 1, ANSI S1.4: 1983 Type 1,

ANSI S1.4A:1985 Type 1, ANSI S1.43:1997 Type 1, ANSI S1.25:1991

Microphone+ preamplfier

1/2” prepolarized condenser microphone+ Preamplifier (Sensitivity Level: -28dB)

Preamplifier

AWA14601 removable preamplifier

Frequency Range

10 Hz ~ 20 kHz ± 1 dB (not including microphone)

Total Measurement Range

Low range: (20132)dBA, (25-132)dBC, (30-132)dBZ

High range: (30142)dBA, (35-142)dBC, (40-142)dBZ

Self-generated Noise

<12 dB(A), 17 dB(C), 22 dB(Z)

Frequency Weighting.

Parallel (simultaneous) A, C, Z, B, D and user1&2-defined weighting

Time Weighting

Parallel (simultaneous) F, S, I, Peak

Measurement Parameters

Lxyp, Lxyi, Lxeq,1s, Lxeq,T, LAE, E, Cpeak, LAFmax, LAfmin, LAfeqT, LAseqT, LAieqT.

Note: X is A, C, Z and Y is F, S, I

A/D Bits:

24 bits

Sampling Frequency

48 kHz

Calibration

Using Sound Calibrator Class 1 model AWA6221A

Correction Function

Press field correction in order to comply with standards ANSI S1.4

Delay Time

The meter can delay 0~99s after pressing start measuring button

Back Erase Function

Elimination of undesired noise; example barking dogs, cars, doors

Display

240×320 color screen, adjustable brightness, backlight can be closed

Display Resolution

0.1 dB

Low battery indication

Symbol  indicate low battery

Data Storage

(32 Mb FLASH RAM.

SD memory card is optional)

* 3328 groups of integrating measuring results only.

* 3328 groups of statistical results only (‘statistical 1’ and ‘statistical 2’ analysis index are same.)

* 2663 groups of statistical results only (‘statistical 1’ and ‘statistical 2’ analysis index are different.)

Print (Optional)

Mini-printer

Internal Clock

Error less than 1 min/month

Output Interface

AC Output (full scale): 1.0V AC RMS; Output Impedance: 1k Ω; Connector: φ3.5 mm stereo plug

DC Output: 20mV/dB; Output Impedance: 1k Ω; Connector: DB-9 plug

RS232 Interface: To computer for output some measurement results instantaneous values , also to mini-printer for printing

Transmission speed: 4800, 9600,115200 bps

USB Interface: available and no need device drive.

Allow USB to be controlled via communication commands

Power Supply

4×LR6 alkaline battery or rechargeable batteries

5 V external power supply

Battery Life

Longest time of 30 hours continuously with 4×LR6 alkaline battery

Dimensions

260 (H) x 80 (W) x 30 (D), mm.

Weight

0.35 kg. (include batteries)

EMC

Type X

Environment: 

Working Temperature: -10 ~ 50 °C

Storing Temperature: -20 ~ 70 °C

Relative Humidity: 25 ~ 90 %

Accessories

AC adaptor, USB cable, RS232 transmission cable, windscreen, hand strap, windscreen fall prevention rubber, carrying case, U-disk, user’s manual

Bluetooth Module (Optional)

Can communicate with smart phone and realize wireless control sound level meter

Function of optional Embedded Software and Hardware :

Type & Name

Main function

SR6228+ host (standard configuration)

Host hardware part (Don’t include transducer and software), box, transfer software.

SR6228+ -10100 Integral software

The noise integral measuring

SR6228+ -10101 Statistics analytical software

The statistical analysis, 24 hours noise monitors automatically.

SR6228+ -10202 The OCT analysis software

Noise real-time OCT spectral analysis

SR6228+ -10303 The 1/3OCT analysis software

Noise real-time 1/3OCT spectral analysis

SR6228+ -10404 The FFT analysis software

Noise real-time FFT spectral analysis

SR6228+ -00013 The Noise Dosimeter software

Noise dosimeter measuring

SR6228+ -00509 The Data Logging software

Do data logging

SR6228+ -00508 The Reverberation Time Measurement software

Reverberation Time Measurement

Model SR4601 Preamplifier

Pre-amplify, gain is 0 dB.

Model SR4423 measuring microphone

1/2", Prepolarized condenser microphone, 10 Hz ~ 20 kHz,  50 mV/Pa.

Windscreen S80

Reduce the affection of wind

AH40 Mini-printer

Print measuring result, include connecting line, print paper

Extension cable with 5, 10 or 20 m

For SR4601 and SR6228+ host

32G SD memory card& recording

GPS positioning modular

Bluetooth function

Tripod (1.46m Height)

   

Sound Level Calibrator

 

 

SR30X Sound level calibrator

Introduction
SR30X Sound level calibrator can be used in the absolute pressure calibration of sensor, sound level meter and other acoustics measuring meters. The unit is designed as a compressible sound pressure and good stability. With the battery to supply power, it’s very convenient for use.

Technical Specifications

Material

ABS engineering plastic housing, safe and reliable

Output sound level

114dB and 94dB under 20upa

Accuracy

±0.5dB

Output frequency

1000Hz±2%

Harmonic Distortion

3%

Reference condition

Temperature: 23°C

RH: 50%

Atmosphere pressure: 1013mbar

Power and low battery indicator

1/2 inch diameter microphone accommodated

Power supply

9V block battery (6F22/ 6LR61)

Working current

<20mA

Operating temperature

0°C~45°C

Working humidity

5%~95%RH non-condensing

Storage Condition

-20°C~+60°C, ≤85% (without battery)

Dimension

108*56*34mm

Weight

About 62g (w/o Battery)

   

SR29A, SR29B Sound Level Calibrator

Specification

Model

SR29 Sound Level Meter Calibrator

Model suffix

SR29A

SR29B

Standard

GB/T15173, ANSI S1.40 CLASS2, IEC942

Output sound level

94dB

94dB

114dB

114dB

Accuracy

0.5dB

0.3dB

Frequency

1000Hz

Design for

1", 1/2"

Power supply

1x9V 6F22 Battery

Dimension

142x47x47mm

Weight (Not including battery)

275g

Standard Accessories

Main Unit

1

Carry Case

1

Operation Manual

1

   

Features:

-Pocket size, portable unit
-Comply with IEC60942 Class 1
-CE Certification, 94dB and 114dB Sound Calibration at 1KHz

SR21A Sound Level Calibrator Class 1

Specifications:

Fulfils Standards

IEC60942 Class 1

Normal sound pressure level

94dB, 114dB

Sound level accuracy

±0.2dB(+23°c), ±0.3dB(-10°c~+50°c)

Normal frequency

1000 Hz

Frequency accuracy

±1%

Distortion (THD)

<1%

Power supply

1*6F22(9V) battery, operating current: 10mA

Battery check

As  long as the signal continues for one minute after the contact is release, otherwise battery low

Reference conditions

Ambient temperature: 23°C; Ambient Pressure: 1013hPa; Ambient Humidity: 65%

Working conditions

Temperature: -10°C~+50°C; Humidity: 25%~90%(RH), Atmospheric Pressure: 650hPa~1080hPa

Dimensions

φ52*116mm

Weight

<450g(include battery)

Microphone Type

1" and 1/2"(with supplied adaptor)

Accessories:

Battery 6F22*1, Instruction Manual*1, Adaptor for 1/2" microphone*1, Leather case*1

   

Features:

-Comply with IEC60942 Class 2
-94dB Sound Calibration at 1KHz

SR21B Sound Level Calibrator

Specifications:

Fulfils Standards

IEC60942 Class 2

Normal sound pressure level

94dB

Sound level accuracy

±0.3dB(+23°c), ±0.5dB(-10°c~+50°c)

Normal frequency

1000 Hz

Frequency accuracy

±2%

Distortion (THD)

<1.5%

Power supply

1*6F22(9V) battery, operating current: 10mA

Battery check

As  long as the signal continues for one minute after the contact is release, otherwise battery low

Working conditions

Temperature: -10°C~+50°C; Humidity: 25%~90%(RH), Atmospheric Pressure: 650hPa~1080hPa

Dimensions

φ40*100mm

Weight

<250g(include battery)

Microphone Type

1" and 1/2"(with supplied adaptor)

Accessories:

Battery 6F22*1, Instruction Manual*1, Adaptor for 1/2" microphone*1, Leather case*1

   

Measure Microphone

Features:

-Comply with IEC 61672 Class 1 or 2;

-Low ambient temperature coefficient;

-High resistance to humidity.

Uses:

-Precision acoustic measurements;

-Pressure variation measurements.

Specifications:

Model

Diameter

Open Circuit Sensitivity (mV/Pa)

Polarization Voltage (V)

Frequency Range (Hz)

Frequency Response Characteristic

Dynamic Range (dB)

Capacitance (pF)

Ambient Temperature

Coefficient (dB/°C)

Dimensions

SR4403

Φ12.7mm (1/2”)

15

200

20~40,000

Free filed

30~160

18

0.01

Type WS1

SR4404

15

20~12,000

Pressure filed

30~160 18 0.01 Type WS1

SR4422

30

0

20~10,000

Pressure filed

20~142

 15

0.02

Type WS2

SR4423

50

10~20,000

Free filed

16~140

 19

0.01

Type WS2

SR4425

40

10~16,000

Free filed

17~140

 20

0.01

Type WS2

SR4431

Φ6.35mm (1/4”)

4

10~70,000

Free filed

40~160

6

0.01

Type WS3

SR4435

4

10~20,000

Free filed

40~160 6

0.01

Type WS3

 

Microphone Preamplifier

SR4601

SR4603

SR4604

SR4614E

SR4600E

 

Features:

-1/2" prepolarized microphone compatible;

-Lemo connector with cable for easy installation and use;

-Low output impedance so that long extension cable can be used.

Uses:

-Signal analysis measurements setups;

-With 1/2" Prepolarized Condenser Microphones;

-Sound power measurements;

-Machinery noise measurements.

Specifications:

Models

SR4601

SR4603

SR4604

SR4614E

SR4600E

Photos          

Frequency Response

(re. 250 Hz)

10Hz~20kHz, +0.2dB

5Hz~200kHz, +0.5dB

10Hz~50kHz, +0.2dB

5Hz~50kHz, +0.5dB

20Hz~20kHz, +0.2dB

10Hz~100kHz, +0.5dB

20Hz~20kHz, +0.2dB

10Hz~100kHz, +0.5dB

10Hz~20kHz, +0.2dB

5Hz~200kHz, +0.5dB

Measurement Range

(dB) (re. 50mV/Pa)

15~140

15~120

15~134

15~134

15~140

Gain

-0.2dB

20dB

-0.15dB

-0.25dB

-0.2dB

Input Impedance

≥10GΩ//0.5pF

≥10GΩ//0.35pF

≥10GΩ//0.35pF

≥10GΩ//0.35pF

≥10GΩ//0.5pF

Noise

A-weighting (20pF) <2.5u

Z-weighting (20pF) <10uV

A-weighting (20pF) <4uV

Z-weighting (20pF) <10uV

A-weighting (20pF) <4uV

Z-weighting (20pF) <15uV

A-weighting (6.5pF) <8.5uV

Z-weighting (6.5pF)

<35uV

A-weighting (20pF) <4uV

Z-weighting (20pF) <10uV

Distortion (THD)

<-60dB

Output Impedance

<150Ω

<50Ω

<50Ω

<50Ω

<150Ω

Max. Output Voltage

20Vp-p (at power voltage 30V)

8VRMS (at power voltage 30V)

6VRMS (at power voltage 24V)

6VRMS (at power voltage 24V)

20Vp-p (at power voltage 30V)

Power Voltage

15~45V

9~30V

1CP 2mA~10mA

1CP 2mA~10mA

15~45V

Operating Current

1mA

2mA

1CP 2mA~10mA

1CP 2mA~10mA

1mA

Polarization Voltage (V)

200, 28, 0

0

Outside Diameter

Φ12.7mm (1/2”)

Φ6.35mm (1/4”)

Φ12.7mm (1/2”)

Weight

<20g (not include cabel)

 

Class 2 (Type2)         Class 1 (Type1), Analyzer, Calibrator, Microphone

 

 ( If you need user manual or E-catalogue for above meters, please ask for at: xiushunjie@163.com)