Zirconia Oxygen Analyzer System
Zirconia (ZrO2) oxygen measurement system: 0.1–25% or 0.1–100% O2, 0.5% O2 accuracy after calibration.

FiNCORE AFiH in-situ zirconia O2 + COe analyzer for medium/high-temperature flue gas up to 1500 °C, with remote transmitter up to 50 m away.
FiNCORE AFi medium/high-temperature in-situ O2 analyzer for process temperatures up to 1500 °C with remote monitoring for boilers, furnaces, biomass, incinerators and dryers.
A heated zirconium-oxide sensor, regulated at 600–800 °C by an S-type thermocouple, measures O2 against an air/gas reference according to the Nernst law, with a second channel for COe/pRed unburnt compounds. The sensor is temperature-regulated and fully compensated, so performance is unaffected by process temperature.
| Principle | Zirconium oxide sensor (Nernst), O2 % and COe ppm |
|---|---|
| O2 Range | Adjustable 0–1 % up to 0–50 %; MDQ 0.01 % O2 |
| COe Range | Adjustable 0–1,000 up to 0–9,999 ppm; MDQ 10 ppm |
| Accuracy | ±0.5 % of measurement or 50 ppm O2 (COe < 10 ppm); ±0.75 % or 0.05 % O2 in oxidizing flue gas |
| Measured Gas Temperature | Up to 1500 °C |
| Measured Gas Pressure | -0.5 to +0.5 bar |
| Analog | 2 × 4-20 mA NAMUR (max 1000 Ω) |
|---|---|
| Digital | RS485 Modbus RTU |
| Power | 24 V DC or 115–230 V AC; average 7 W, up to 9 W |
| Warm-up | < 10 min |
| Response | T60 < 15 s at sampling port; T60 < 4 s at calibration port |
| I/O | 2 isolated 24 V DC dry-contact inputs; 3 × 230 V AC relay outputs |
| Intercept / Slope gas | 20.9 % O2 (instrument air) / 1.0 % O2 |
|---|---|
| COe gas | 2 %vol O2 + 250 ppm CO + 25 ppm H2 |
All Tetracon-supplied instruments carry the original manufacturer warranty (typically 12–24 months) plus first-line local support from our Islamabad service centre.
Yes. Our manufacturer-trained engineers offer on-site installation, commissioning and startup training anywhere in Pakistan.
Common spares are held in local stock. Calibration is available at our lab or on-site with NIST-traceable reference standards.
Stocked items ship within 3–5 working days; engineered configurations typically 6–10 weeks depending on manufacturer schedule.
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