Description
SV 973 Sound Level Meter Class 2
SVAN 974 Vibration Meter and FFT Analyser is intended for general vibration measurements and machinery condition monitoring. It can be used by consultants, maintenance services, industry R&D departments etc. Instrument allows parallel acceleration, velocity and displacement measurements. Three vibration profiles in SVAN 974 allow parallel measurements with independently defined filters and RMS detector time constants. Each profile provides a significant number of results (like RMS, Peak or Max). The advanced time-history logging for each profile provides the complete information about the measured signal. Measurements data stored to microSD card can be easily downloaded to any PC using the USB interface and SvanPC++ software.
Most of required weighting filters, like VelMF, meeting ISO 20816 standard requirements, are available with this instrument. Using the computational power of its digital signal processor, the SVAN 974 instrument can perform additionally the real-time 1/1 or 1/3 octave or FFT analysis. The SVAN 974 Vibration Meter offers also, parallel to the vibration measurement, the RPM measurement with Monarch laser tachometer. Instrument is powered from four AA standard or rechargeable batteries. The powering of the instrument from the USB interface is also provided. The robust and very compact case together with a light-weight design complete the exceptional features of this modern instrument.
Machine Vibration Measurements
Machine Vibration Measurement Techniques are described by the ISO 20816-1 standard. These vibration measurement techniques involve accelerometer placement, setting appropriate measurement parameters, executing the measurement, and interpreting the results. ISO Machine Vibration Measurement Technique facilitates accurate collection and analysis of vibration data. The ISO vibration analysis technique identifies potential faults such as bearing defects, misalignment, and imbalance, prompting timely corrective actions.
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Features
- SV 973 Sound Level Meter is CLASS 2 instrument in accordance to IEC 61672-1:2013
- Microphone in MEMS technology with lifetime warranty
- Sound exposure meter mode with measurement range up to 141 dB
- Wide frequency range up to 10 kHz
- Automatic calibration
- OLED display
- Noise sources recognition with 1/1 and 1/3 octave and audio recording
- RT60 reverberation time measurement in 1/1 or 1/3-octave bands in accordance to ISO 3382
Specifications
Sound Level Meter
| Standards | Class 2: IEC 61672-1:2013 |
| Weighting Filters | A, B, C, Z, LF |
| Time constants | Slow, Fast, Impulse |
| RMS Detector | Digital True RMS detector with Peak detection, resolution 0.1 dB |
| Microphone | ST 973 MEMS microphone in 1/2” housing |
| Preamplifier | integrated |
| Linear Operating Range | 32 dBA RMS ÷ 128 dBA Peak (in accordance to IEC 61672) |
| Total Dynamic Measurement | 25 dBA RMS ÷ 128 dBA Peak (typical from noise floor to the maximum level) |
| Internal Noise Level | less than 25 dBA RMS |
| Frequency Range | 20 Hz ÷ 10 kHz |
| Meter Mode Results | Lxy, Leqx (LEQ), Lxpeak (PEAK), Lxymax (MAX), Lxymin (MIN), LEx, Lden, LEPd, Ltm3, Ltm5, where x – weighting filter A/ B/ C/ Z; y – time constant Fast/ Slow/ ImpulseEX (expected LEQ value), SD (standard LEQ deviation), OVL (overload time %), Simultaneous measurement in three profiles with independent set of filters and detectors |
| 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 ms |
| Audio Recording (option) | Audio events recording, trigger and continuous mode, 12 kHz sampling rate, wav format |
| Voice Comments | Audio records on demand, created before or after measurement, added to measurement file |
Sound Exposure Meter
| Linear Operating Range | 50 dBA RMS ÷ 141 dBA Peak (in accordance to IEC 61672) |
| Total Dynamic Range | 43 dBA RMS ÷ 141 dBA Peak (typical from noise floor to the maximum level) |
| Frequency Range | 20 Hz ÷ 10 kHz |
| Dosimeter Mode Results | Lxy, Leqx (LEQ), Lxpeak (PEAK), Lxymax (MAX), Lxymin (MIN), LEx, Lden, LEPd, Ltm3, Ltm5, Ln (Leq statistics), where x – weighting filter A/ C/ Z; y – time constant Fast/ Slow/ ImpulseLc-a, DOSE, D_8h, PrDOSE, LAV, LAE8 (SEL8), PLAE (PSEL), E, E_8h, PTC (peak counter), PTP (peak threshold), ULT (upper limit time), TWA, PrTWA, EX (expected LEQ value), SD (standard LEQ deviation),OVL (overload time %). |
Analyser
| 1/1 Octave Analysis | Real-time analysis meeting Type 1 requirements of IEC 61260, center frequencies from 31.5 Hz to 8 kHz available simultaneously with three profiles for broadband measurements (SLM), time-history logging and audio recording (included) |
| 1/3 Octave Analysis | Real-time analysis meeting Type 1 requirements of IEC 61260, center frequencies from 20 Hz to 10 kHz available simultaneously with three profiles for broadband measurements (SLM), time-history logging and audio recording (optional) |
| RT 60 | RT 60 reverberation time analysis in 1/1 or 1/3 octave bands (optional) |
General information
| Memory | Built-in 8 GB memory |
| Display | Colour 96 x 96 pixels OLED type |
| Keyboard | 8 push buttons |
| Communication Interfaces | USB 2.0 client, Bluetooth® 4.2 |
| Power supply | Four AAA alkaline or rechargeable NiMH batteries (not included) USB interface 100 mA HUB |
| Environmental Conditions | Temperature from -10 oC to 50 oC |
| Physical Characteristics | Dimensions: 205 mm x 52 x 20 mm (including microphone) Weight: Approx. 225 grams with batteries |
*Continuous product development and innovation are the policy of our company. Therefore, we reserve the right to change the specifications without prior notice.
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