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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
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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 |
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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 |
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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
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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 |
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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: (20~132)dBA,
(25-132)dBC, (30-132)dBZ
High range: (30~142)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) |
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Sound Level Calibrator |
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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
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114dB and 94dB under 20upa
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Accuracy |
±0.5dB |
Output frequency
|
1000Hz±2% |
Harmonic Distortion
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<3% |
Reference condition |
Temperature: 23°C
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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
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Working humidity
|
5%~95%RH non-condensing
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Storage Condition
|
-20°C~+60°C,
≤85% (without
battery) |
Dimension |
108*56*34mm
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Weight |
About 62g (w/o Battery) |
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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 |
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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 |
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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 |
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Introduction:
The SR23S sound calibrator is a multifunction acoustic calibrator,
mainly used for calibrating measurement microphone and acoustic
measurement instruments. It has automatic compensation of
temperature and pressure. Comply with IEC60942.
There’s built-in high-precision
temperature, humidity, barometric pressure sensor which can measure
ambient temperature, relative humidity, atmospheric pressure. |
SR23S
Sound Level Calibrator
Specifications:
Fulfils Standards |
IEC 60942 class 1 |
Normal
sound pressure level (ref.
2×10- 5 Pa) |
74dB,
84dB, 94dB, 104dB ± 0.3dB |
Standard deviation for SPL |
Smaller
than ± 0.3 dB |
Frequency (Hz) |
1000Hz |
Standard deviation for Frequency |
Smaller
than ± 1% |
Distortion
(THD) |
≤1% |
Power Supply |
Lithium
rechargeable Battery (3.6V) 1Ah, model TS-DV001-S005E |
Display |
122×32 LCD |
Display interface |
Nominal
sound pressure level and frequency, environmental temperature, relative
humidity, atmospheric pressure,
wind speed
(optional), clock calendar |
Data output interface |
RS-232
(Output real time values or record results) |
Dimension |
155 mm×50
mm×40 mm |
Weight |
240g |
Application |
Calibrating 1″ (Φ23.77 mm), 1/2″ (Φ12.7 mm), 1/4″ (Φ 6.35 mm)
microphones and acoustic instruments |
Working environment |
Temperature: -10°C ~ +50°C; Humidity:10% ~ 90%
Atmospheric Pressure: 65kPa ~ 108kPa |
Distortion |
≤1% |
Stabilization time |
5s |
Short-term stability |
better
than 0.1 dB |
Sound
calibrator equivalent volume |
26cm3 |
Barometric corrections |
Automatic
correction |
Accessories |
1/2″Adapter (AWA8531), 5V
Power Adapter |
Working current |
the
current is less than 5mA when standby, when make sounding, it is less
than 60mA |
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Measure Microphone |
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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 |
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Microphone Preamplifier |
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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 |
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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) |
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