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

Hazardous-area process oxygen analyzers for ppm through percent ranges.
GPR-x800 (A)IS analyzers are engineered for precision trace oxygen detection (GPR-1800) and percentage analysis (GPR-2800) in hazardous areas. They are available as a loop-powered intrinsically safe transmitter (IS) or a line-powered analyzer (AIS) with Modbus and alarms, and share a common HMI with Aii online and portable analyzers.
An electrochemical oxygen sensor (GPR-12-333 / XLT-12-333 for ppm; GPR-11-60 / XLT-11-24 for %) measures the sample. The IS version is a 2-wire 4–20 mA loop-powered transmitter; the AIS version is line-powered and adds Modbus and two user-configurable alarms.
| GPR-1800 (A)IS | 0–10, 0–100, 0–1000 ppmV, 0–1 %; LDL 0.05 ppmV; T90 < 2 min |
|---|---|
| GPR-2800 (A)IS | 0–1, 0–5, 0–10, 0–25 %; LDL 0.01 %; T90 < 30 s |
| Accuracy | < 2 % of selected range at constant conditions |
| Sample Flow | 1–2 SCFH (0.5–1 LPM) |
| Pressure Range | 5–30 psi (0.3–2 bar) |
| Calibration Interval | 30 days |
| Display | LCD |
|---|---|
| Output | 4–20 mA |
| Digital | Modbus (AIS only) |
| Relays | Two user-configurable alarms (AIS only) |
| Power Supply | 18–24 V DC loop-powered (IS); 12–24 V DC line-powered (AIS) |
| Max. Power | 1 W (IS); 28 W (AIS) |
| Ingress Protection | NEMA 3R |
|---|---|
| Housing | Fiberglass and painted aluminum |
| Mounting | Wall / vertical surface |
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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