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The SV 971A is the perfect solution for environmental noise measurements, it's Class One microphone means it is more than capable of achieving quality readings to meet the environmental noise standards. If you require a long term measurement then you can extend the battery life with our Castle Weatherproof Power Source Optional upgrades are also available such as Audio Recording Events and Octave Band Analysis up to 1/3 Octaves.
Measurement Parameters | Ln, Leq |
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Weightings | A, C, Z |
Application | Environmental Noise |
Noise Features | 1/3 Octaves, 1/1 Octaves, Weatherproof, Data Logging |
Brand | Castle Group |
Available Outside the UK? | No |
The SV 971A Short term noise monitor is capable of taking accurate noise measurements indoors and outdoors, it's lightweight and small design means it is perfect for conducting noise analysis in any location.
The Weatherproof Kit is the perfect solution for taking accurate, continuous environmental noise readings over a period of time without having to worry about moving the kit and distorting some of the measurements. It's strong housing means that it is capable of being left outside without receiving any damage to the class 1 noise analyser housed inside. If you need a collection of environmental noise data then this is then kit for you, the option of a longer battery life means you can continue to take your measurements for longer than ever before! This Short Term Industrial Noise Assessment Kit includes the SV 971A Sound Meter incl. Time History Logging Class 1, the GA611 Class 1 Tri Level Sound Meter Calibrator, SVAN Software, a Weatherproof case, Windshield, 4m Cable and tripod.
Please note - Available in the UK Only.
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 (option) |
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 (option) |
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 (onboard power) |
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 |
Kit Contents