Castle Group

SV 971 Sound And Dosimeter System

SKU: 01KV001A

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£3,031.00

This SVAN 971 Class 1 Sound Level Meter is a hardwearing and powerful noise monitor with optional 1/1 and 1/3 Octave Band analysis, making it an ideal choice for many applications including industrial hygiene noise, short term environmental noise, acoustic consultants, technical engineers and general noise measurements. 


Also included in this system is a SV 104 Compact Personal Noise Dosimeter, a hugely capable device to assist your occupational health and safety noise monitoring. With voice comments and audio events recording functionality, this cable-free noise doseimeter is easy to set up and start using.

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£3,031.00
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Product Specification unless deselected above

Brand Castle Group
Application Noise at Work
Noise Features 1/1 Octaves, 1/3 Octaves, Data Logging
Weightings A, C, Z
Measurement Parameters Leq, Ln, Dose
Available Outside the UK? No

SV 971 Sound and Dosimeter System

This system is supplied in an attache carry case in order for you to safely store and transport your equipment. Within the case is supplied:

  • SV 971 Sound Level Meter Class 1
  • GA607 Class 1 Acoustic Calibrator
  • SV 104 Compact Personal Noise Dosimeter
  • GA690 Barometer
  • "Supervisor" PC Analysis Software

SV971 Sound Level Meter Class 1

Harnessing technology combined with a thoughtful insight into how people use it is the key to product development. The SV 971 epitomises these concepts bringing state of the art electronics and a clear user-interface to the world of sound level meters.

The result is a very small instrument (only 56mm wide and 20mm thin), with a full range of measurement capabilities including optional 1/1 and 1/3 octave band analysis for a greater understanding of the frequency content of the noise you are measuring.

Not only this, but there is a colour display, micro-SD memory card expansion and up to 24 hours running time. All this comes in a package that only weighs 225g.

SV104 Compact Personal Noise Dosimeter

Also included in this system is a SV 104 Compact Personal Noise Dosimeter, a hugely capable device to assist your occupational health and safety noise monitoring. With voice comments and audio events recording functionality, this cable-free noise doseimeter is easy to set up and start using.

The dosimeter that is included in this package has a new design of microphone which is a revolution in sound measurement because it is nearly indestructible, the OLED colour screen also makes it easier for the user and compliments its design in taking noise measurement to the next level.

Please Note - This product is available in the UK only

Technical Specification

Standards Class 1 IEC 61672-1:2002
Weighting Filters A,B, C, Z
Time Constants Slow, Fast, Impulse
RMS Detector Digital True RMS detector with Peak detection, resolution 0.1 dB
Microphone ACO 7052E, 35 mV/Pa, prepolarised 1/2” condenser microphone
Calibration Automatic calibration @ 114 dB/1 kHz
Preamplifier Detachable
Linear Operating Range 25 dBA RMS ÷ 140 dBA Peak (in accordance to IEC 61672)
Total Dynamic Measurement Range 15 dBA RMS ÷ 140 dBA Peak (typical from noise floor to the maximum level)
Internal Noise Level less than 15 dBA RMS
Dynamic Range >110 dB
Frequency Range 10 Hz ÷ 20 kHz
Meter Mode Results SPL, Leq, SEL, Lden, Ltm3, Ltm5, LMax, LMin, LPeak plus “running Leq” up to 60 minutes.
Statistics Ln (L1-L99), complete histogram in meter mode
Data Logger Time-history logging of summary results, spectra with adjustable double logging steps down to 100 s
Audio Recording Audio events recording, trigger and continuous mode, 12 kHz sampling rate, wav format (option)
Voice Comments Audio records on demand, created before or after measurement, added to measurement file
Noise Dosemeter Results SPL, Leq, SEL, LPeak, Dose, D-8h, Lav, SEL8, PSEL, E, E-8h, TWA, ’Peak Counter’ and more exchange Rate 2, 3, 4, 5, 6 (option)
1/1 Octave Analysis Real-time analysis meeting Type 1 requirements of IEC 61260, centre frequencies from 31.5 Hz to 16 kHz (option) available simultaneously with three profiles for broadband measurements (SLM), time-history
1/3 Octave Analysis Real-time analysis meeting Type 1 requirements of IEC 61260, centre frequencies from 20 Hz to 20 kHz (option) available simultaneously with three profiles for broadband
Ingress Protection Rating IP 65 (excluding microphone)
Input Preamplifier (60 UNS thread)
Memory MicroSD card 4 GB (removable & upgradeable)
Display Colour 96 x 96 pixels OLED type
Keyboard 8 push buttons
Communication Interfaces USB 2.0 client, RS 232 cable (optional)
Power Supply Four AAA alkaline or rechargeable NiMH batteries, operation time 16 h ÷ 24 h (depending on usage), USB interface 100 mA
Environmental Conditions Temperature from -10 oC to 50 oC, Humidity up to 95 % RH, non-condensed
Dimensions 232.5mm x 56 x 20mm (including microphone and preamplifier)
Weight Approx. 225 grams with batteries
SV 104 Dosimeter
Standards IEC 61252; ANSI S1.25-1991;
Weighting filters A, C and Z
Time constants Slow, Fast, Impulse
Exchange rates 2, 3, 4, 5, 6
Measurement results Lavg/Leq, SPL, Max, Min, SEL, SEL8, PSEL, LEPd, Dose (%), TWA, E, E_8h, Peak, Run Time, Upper Limit Time (ULT), L(C-A), Projected Dose (D_8h)
Measurement profiles 3
Microphone Class 2 microphone, 1/2" housing
Measurement range 55 dBA RMS ÷ 140.1 dBA Peak
Frequency range 30 Hz ÷ 8 kHz
Dynamic range 95 dB
Data logging Summary results for the measurement time Time-history logging of Leq/Max/Min/Peak with 1s logger step
Voice comments Audio records on demand, created before or after measurement, added to measurement file
Audio recording Audio events recording, trigger and continuous mode, 12 kHz sampling rate, wav format (option)
1/1 octave Real-time analysis in octave band filters 9 filters with centre frequencies from 31.5 Hz to 8 kHz (option)
Display OLED 128 x 64 pixels
Memory 8GB
Interfaces USB 2.0 client
Keyboard 3 push buttons
Power Supply Ni-MH rechargeable cells- operation time > 40 hours*
USB Interface 500mA HUB
Environmental Conditions Temperature: from -10 oC to 50 oC
Humidity: up to 90 % RH, non-condensed
Dimensions 88 x 49.5 x 19.2 mm
Weight 100g with batteries

What's in the Box

This Kit Includes:
  • SV 971 Sound Meter incl. Time History Logging Class 1
  • GA607- Calibrator, Dual Level, Class 1 (includes GA690 Barometer)
  • SV104- Compact Personal Dosimeter
  • KA010M- Small Attaché Kit Case (Mirus)

Downloads and Datasheets

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