1. Drive mode: Magnetic electric passive sensor signal input (no power supply required, collected speed by cutting magnetic induction lines with flywheel ring gear)
2. Compatible equipment: Siyang SIYANG lifeboat diesel engine, small marine auxiliary equipment
3. Dial range: Conventional 0-3000r/min (commonly used range for ship engines)
4. Installation size: Circular embedded opening installation, standard 52mm instrument opening for ships
5. Working environment: Ship engine room is earthquake resistant, moisture-proof, and salt spray resistant, with a temperature range of -20 ℃ to+70 ℃
6. Pointer accuracy: ≤± 2% FS
7. Wiring method: Two wire magneto electric probe directly connected, no power supply, pure mechanical meter head indication
8. Protection level: IP54 (panel waterproof and dustproof)
9. Body material: ABS flame-retardant shell+tempered glass cover, resistant to ship vibration
10. Purpose: Real time monitoring of engine speed by lifeboat main engine, judgment of operating conditions, and reference for overspeed protection
