詳情：
Class 1 IEC 61672:2013 sound level measurementsGeneral vibration measurements (acceleration, velocity and displacement)Three parallel independent profiles1/1, 1/3 octave real-time analysis1/6 or 1/12 octave real-time analysis (option)FFT real-time analysis 1600 lines in up to 22.4 kHz bandTime-domain signal recordingAdvanced data logger including spectra’s logging and Audio Events RecordingReverberation Time measurements (RT60)Pure tone detection (option)Acoustic loudness measurements (option)Advanced trigger and alarm functionsUser programmable Band-Pass FiltersWindscreen and extension cable auto detectionBuilt-in self vibration measurementsMicroSD card for mass data memoryRemote communication by GPRS or LAN & WLAN (optional hardware required)GPS time synchronisation (optional hardware required)USB 1.1 Client interface (real-time PC “front end")Bluetooth®, RS 232 and IrDA interfacesSuper contrast (10000:1) colour OLED displayBuilt-in signal generatorAll weather microphone protection SA 279Hａnd held, light weight and robust caseEasy in use
The SVAN 979 Class 1 Sound & Vibration Analyzer is our flagship device. Your first impression will be the amazing OLED display which features excellent visibility in all light conditions. The instrument’s lightweight and durable aluminium housing not only gives a sense of a firm grip but also protects the valuable electronic device from damage and any influence from electromagnetic interference. The SVAN 979 has a very large dynamic range of measurement - over 110dB. It’s high-quality GRAS 40AE microphone allows measurement in the frequency range starting as low as 3 Hz. The measurement path has been designed to allow the use of other microphones should you want to measure very low frequencies or very high levels of noise. The microphone preamplifier has also been reinforced with a collar to protect against mechanical damage. One amazing feature of the SVAN 979 is that if you disconnect the microphone preamplifier then you can use the instrument for vibration measurements - simply connect up a cable and a vibration sensor . The SVAN 979 has an extensive range of hardware and firmware add-ons that includes built-in Bluetooth®, windscreen infrared detector, direct connections to GPS module, GPRS or Wireless LAN modem or the totally unique built-in vibration shock sensor that warns the user whenever the instrument itself is exposed to vibrations that may influence the noise measurements. Two USB connectors allow for the simultaneous operation of USB pen-drives and communication with the computer. Usage of this number of advanced features at the same time is possible as the instrument has two high-speed digital signal processors. For example, the SVAN 979 is capable of measuring 2 ms steps of time history, logged simultaneously to audio recording (with 48kHz sampling) and real-time frequency analysis. Only the SVAN 979 can meet such a challenge. All data is stored on a microSD card of any capacity (default is 8GB). It is also important to note that unlike other brands which recalculate FFT spectrum to octave bands, the SVAN 979 performs frequency analysis in real-time, whether in octaves, third octaves all the way up to 1/12 octaves. Setting up such advanced measurements can be very complicated but not in the SVAN 979. The intuitive menu structure of this instrument has been designed to make the measurement experience a pleasure. | Standards | Class 1: IEC 61672-1:2013 (PTB approval 21.21/13.06) | | Number of Profiles | 3 | | Weighting Filters | A, B, C, Z, G | | Time constants | Slow, Fast, Impulse | | RMS Detector | Digital True RMS detector with Peak detection, resolution 0.1 dB | | Microphone | GRAS 40AE, 50 mV/Pa, prepolarised 1/2" condenser microphone | | Preamplifier | SV 17 IEPE type / 200V external polaristation compatible | | Linear Operating Range | 22 dBA RMS ÷ 140 dBA Peak (in accordance to IEC 61672) | | Total Dynamic Measurement Range | 12 dBA RMS ÷ 140 dBA Peak (typical from noise floor to the maximum level) | | Internal Noise Level | less than 12 dBA RMS | | Dynamic Range | >110 dB | | Frequency Range | 3.15 Hz ÷ 20 kHz with GRAS 40AE microphone | | Meter Mode Results | SPL, Leq, SEL, Lden, LEPd, Overload time, Ltm3, Ltm5, LMax, LMin, LPeak,
Simultaneous measurement in three profiles with independent filters and detectors | | Statistics | Ln (L1-L99), complete histogram in meter mode, averaging: linear of with detector (exponential) Ln (L1-L99) statistics in 1/1 or 1/3 octaves (if option is active) | | Data Logger | logging of summary results with step from 10 s (auto-save function) logging of time history with step from 2 ms | | Audio Recording (option) | Audio events recording during measurement, trigger or continuous mode, 12 / 24 / 48 kHz sampling rate, 16 or 24 bit, wav format | | Wave Recording (option) | Time domain signal recording during measurement 12 / 24 / 48 kHz sampling rate, 16 or 24 bit, wav format | | | Sound Analyser | | | 1/1 Octave Analysis (included) | Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 31.5 Hz to 16 kHz (audio band), selectable weighting filter, selectable detector or Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 1 Hz to 16 kHz (full band), selectable weighting filter, detector linear | | 1/3 Octave Analysis (inlcuded) | Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 20 Hz to 20 kHz (audio band), selectable weighting filter and selectable detector or Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 0.8 Hz to 20 kHz (full band), selectable weighting filter, linear detector | | 1/6 Octave Analysis (option) | Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 20 Hz to 21.4 kHz (audio band), selectable weighting filter and selectable detector or Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 0.73 Hz to 21.4 kHz (full band), selectable weighting filter, linear detector | | 1/12 Octave Analysis (option) | Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 20.3 Hz to 22 kHz (audio band), selectable weighting filter and selectable detector or Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 0.71 Hz to 22 kHz (full band), selectable weighting filter, linear detector | | FFT Analysis (included) | 400 or 800 or 1600 lines in selectable bａnd from 78 Hz to 20 kHz with selectable weighting filter, selectable averaging: linear or exponential, and selectable window | | Tonality (option) | Pure tone detection, FFT -based, according to Joint Nordic Method and ISO 1996 | | RT 60 (included) | Reverberation time analysis in 1/3 octaves, selectable method: decay or impulse | | Signal Generator (included) | Sine, White noise, Pink noise | | RPM (option) | Rotation measurement option without Laser Tachometer (option), measurement of RPM, RPS, RMAX, RMIN | | User filters (option) | Selectable real time filter: low pass, high pass and bａnd pass filters option | | | Vibration Level Meter | | Standards | ISO 10816-1 | | Number of Profiles | 3 | | Weighting Filters | Acceleration: HP1, HP3, HP10, Wh; Velocity: Vel1, Vel3, Vel10, Displacement: Dil1, Dil3, Dil10 Machine filter: VelMF (ISO 10816-1) | | RMS Detector | Digital True RMS detector with Peak detection, resolution 0.1 dB
Time constants: from 100 ms to 10 s | | Meter mode results | RMS, MAX, Peak, Peak-Peak, Overload time, MTVV, | | Accelerometer (option) | SV 80 IEPE, single axis, sensitivity 10 mV/(ms-2) ~ 100 mV/g | | Measurement Range | 0.01 ms-2 RMS ÷ 500 ms-2 Peak (with SV 80) | | Frequency Range | 1 Hz ÷ 5 kHz (with SV 80 and HP or HP1 filter) | | | Vibration Analyser | | 1/1 Octave Analysis (included) | Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 1 Hz to 16 kHz (full band), HP weighting filter, detector linear | | 1/3 Octave Analysis (inlcuded) | Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 0.8 Hz to 20 kHz (full band), HP weighting filter, detector linear | | 1/6 Octave Analysis (option) | Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 0.73 Hz to 21.4 kHz (full band), HP weighting filter, detector linear | | 1/12 Octave Analysis (option) | Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 0.71 Hz to 22 kHz (full band), HP weighting filter, detector linear | | FFT Analysis (included) | 400 or 800 or 1600 lines in selectable bａnd from 78 Hz to 20 kHz with selectable weighting filter, selectable averaging: linear or exponential, and selectable window | | RPM (option) | Rotation measurement option without Laser Tachometer (option), measurement of RPM, RPS, RMAX, RMIN | | User filters (option) | Selectable real time filter: low pass, high pass and bａnd pass filters option | | | General information | | | Input | LEMO 7-pin: Direct AC, Direct AC with 200 V polarisation, Direct DC or IEPE type with TEDS | | Self-vibration Monitoring | Built-in shock detection | | Dynamic Range | 115 dB | | Frequency Range | 0.5 Hz ÷ 22.4 kHz, sampling rate 48 kHz 0.5 Hz ÷ 40 kHz, sampling rate 96 kHz (ultrasound version) | | Memory | 32 MB non-volatile flash type, micro SD card 8 GB (removable & upgradeable) | | Display | Colour 320 x 240 pixels, OLED type | | Keyboard | 9 push buttons | | Communication Interfaces | USB 1.1 client | | Bluetooth® | | RS 232 (with SV 55 option) | | GPS time synchronisation and positioning (option) | | External I/O - AC output (1 V Peak) or Digital Input/Output (Trigger – Pulse) | | Power supply | Four AA rechargeable NiMH batteries (included) | | USB interface 500 mA HUB | | External power supply 6 V/500 mA DC ÷ 15 V/250 mA DC | | SA 17A external battery pack (option) | | Environmental Conditions | Temperature from -10 oC to 50 oC | | Humidity up to 90% RH, non-condensed | | Dimensions | 305 mm x 79 x 39 mm (including microphone and preamplifier) | | Weight | Approx. 0.6 kg with batteries |
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