This practical guide shows you how to complete a signed, QR-verified Diesel / Gas Generator Inspection certificate in OhmCert Module #08 and how to troubleshoot non-compliant readings on site.
1. Step-by-Step OhmCert UI Workflow
- Open Module #08: Navigate to Diesel / Gas Generator Inspection from the Dashboard.
- Load a 1-Click Standard Annex Preset: Open the blue Standard Annex banner at the top and click a preset (such as "1000 kW Data Center / Hospital Genset (ISO Class G3, 24V)") to populate target limits automatically.
- Enter Your Field Measurements: Fill in the measured inputs (Rated Output, Start to On-Load Time, ISO 8528-5 Performance Class, Steady State Frequency Deviation, Transient Frequency Deviation on Load Step, Frequency Recovery Time, Transient Voltage Deviation on Load Step, Fuel Level, Starting Battery System, Starting Battery Voltage (resting), Total Run Hours). Blank inputs stay neutral
PENDING. - Complete the 18-Point Checklist: Grade each item, attach photos if needed, and export the SHA-256 signed PDF certificate.
2. Worked Numerical Field Case Study
Scenario: 1000 kW Data Center / Hospital Genset (ISO Class G3, 24V) (ISO 8528 Class G3) — Tight frequency (+/-0.5% steady, +/-10% transient) and voltage (+/-15% transient) regulation for UPS/IT loads..
- Rated Output:
1000 kW - ISO 8528-5 Performance Class:
G3 - Starting Battery System:
24 V - Fuel Level:
85 %
3. Engineering Troubleshooting: Corrective Actions When a Reading Fails
- Connect a resistive load bank for a 2-to-4 hour burn-off run at 75-100% rated kW to clear wet-stacking carbon deposits.
- Replace starting batteries if cranking voltage sags below 9.0 V (12 V system) or 18.0 V (24 V system) during starter engagement.
- Tune electronic governor PID gains and AVR droop settings if steady-state or transient frequency/voltage exceeds ISO 8528-5 limits.
→ Try This Worked Example Live in Module #08 (Generator Inspection)