Description
ABB AO2000 Gas Analyzer Testing Methodology
Applicable Models: AO2000 Series (Software Version ≥3.0)
1. Pre-Test Preparation
1.1 Safety Compliance
- Verify grounding resistance ≤4Ω and insulation resistance ≥100MΩ (500V DC)
- Confirm purge gas supply (N₂/Ar) pressure at 2-5 bar with flow rate ≥20 L/min
- Wear ESD-protective gear when handling electronic modules
1.2 System Initialization
1. Power sequence: - Activate main breaker → Enable 24V DC control circuit → Start display unit 2. Warm-up duration: - IR detectors (Limas11/Uras14): ≥60 mins - Electrochemical cells (Magnos17): ≥30 mins 3. Perform auto-diagnostic via [System] → [Self-Test]
2. Calibration Testing
2.1 Manual Calibration (Single-Point)
| Step | Action | Parameter Range |
|---|---|---|
| 1 | Select target component (O₂/CO/NOx etc.) | Via [Calibration] → [Component Select] |
| 2 | Apply certified test gas | Concentration 80-100% of range |
| 3 | Stabilize flow at 1.5±0.2 L/min | Pressure drop ≤50 mbar |
| 4 | Initiate calibration | [Start Manual Cal] → Wait for “Stable” indicator |
| 5 | Validate results | Error ≤±1% FS (≤±2% for trace components) |
2.2 Automated Multi-Point Calibration
- Configure test sequence in [Auto-Cal Program]:
[Sequence_1] Gas1 = SpanGas (100% range) Gas2 = ZeroGas (N₂ 5.0) Gas3 = MidGas (50% range) Interval = 24h ; Default calibration cycle - Enable cross-sensitivity compensation for CO/CO₂ mixtures
3. Functional Verification
3.1 Dynamic Response Test
- Step change test (10→90% range):
- Response time (T90): ≤15s for NDIR, ≤30s for electrochemical
- Overshoot: ≤5% of final value
3.2 Limit Value Monitoring
- Set alarms at:
- Warning: 80% of range
- Critical: 95% of range
- Verify relay activation via [I/O Test] menu
4. Post-Test Procedures
4.1 Data Documentation
- Export calibration logs (CSV format) including:
Timestamp, Component, ExpectedValue, MeasuredValue, Deviation, OperatorID - Save configuration snapshot using [File] → [Export Config]
4.2 System Reset
- Purge sample lines for 10 mins with inert gas
- Deactivate test mode via [Operation] → [Normal Run]
AO2000 ABB pdf
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