Adash A4900 Vibrio M Ex
Intrinsically Safe Vibration Meter, Analyzer & Data Collector for Zone 1 Explosive Atmospheres
The A4900 Vibrio M Ex is the ATEX intrinsically safe version of Adash's popular Vibrio M series, specifically certified for hazardous Zone 1 explosive gas environments. It enables full vibration diagnostics—including overall RMS values, ISO 10816-3 severity, 800-line FFT spectrum, bearing condition envelope, route data collection, and FASIT automatic fault detection—safely inside oil & gas refineries, chemical plants, and explosive processing facilities.
ATEX Certification & Diagnostic Features
Engineered to EN 60079-11 intrinsic safety standards for safe operation in hazardous gas zones.
ATEX Zone 1 Certification
Certified II 2 G Ex ib IIC T4 Gb for Zone 1 acetylene and hydrogen gas atmospheres (135°C temperature class T4 protection).
FASIT Automatic Diagnosis
Adash's patented expert algorithm automatically detects unbalance, misalignment, mechanical looseness, and bearing damage directly on site.
Vibration Stethoscope
Plug-in headphones output for real-time acoustic listening to bearing friction and gear mesh noise in hazardous plant locations.
FFT Spectrum & Demodulation
800-line FFT frequency spectrum and Demodulation Envelope analysis for early identification of roller bearing defect frequencies.
Free DDS Software Route
4 MB memory stores 900 measurements of 800-line spectra. Connects via USB to free Adash DDS software for route analysis.
Lithium Ex Battery Power
Powered by 2x AA Energizer L91 Ultimate Lithium batteries providing 7 hours of continuous route measurement in Zone 1 areas.
Technical Specifications
ATEX explosion-proof certification parameters extracted from official datasheet.
| ATEX Ex Certification | II 2 G Ex ib IIC T4 Gb (Intrinsic Safety EN 60079-11, Zone 1, Acetylene/Hydrogen Gas Group, T4 135°C) |
|---|---|
| Input Sensor | 1 x ICP® powered Ex accelerometer (AC90x or AC91x standard) |
| Velocity Measurement | 10 - 1 000 Hz [mm/s, ips] (RMS & PEAK values) |
| Acceleration Measurement | 500 - 16 000 Hz [g] (RMS & PEAK values) |
| Demodulation Envelope | 500 - 16 000 Hz [g] (Demodulation Envelope RMS & Peak for bearing fault detection) |
| Displacement Measurement | 2 - 100 Hz [μm, mil] (RMS, 0-Peak, Peak-Peak) |
| FFT Spectrum Resolution | Velocity: 800 lines (1-1000 Hz) | Acceleration: 800 lines (1-16 kHz) |
| Memory & Data Storing | 4 MB memory (900 measurements of 800-line spectra), Route & Off-Route via DDS software |
| Display & Interface | Colour graphic OLED display 128x128 pixels 1.5" | USB 2.0 interface |
| Power Supply | 2 x AA 1.5V Energizer L91 Ultimate Lithium batteries (7 hours continuous operation) |
| Operating Temperature | -20°C to +50°C |
| Dimensions & Weight | 150 x 60 x 35 mm | 330 g (unit with batteries) / 540 g (including cable, Ex sensor & magnet) |
| Included Ex Accessories | Ex vibration sensor (AC90x/AC91x), coiled cable, magnetic base, stethoscope headphones, special USB cable, transport case |
Safe Vibration Monitoring in Zone 1 Hazardous Explosive Areas
Contact Alpha Industrial Services—Authorized distributor & certified service partner for Adash in Bangladesh.