Oxygen & Combustion Analyzers
Zirconia Oxygen Analyzer System
Zirconia (ZrO2) oxygen measurement system: 0.1–25% or 0.1–100% O2, 0.5% O2 accuracy after calibration.
NT
Ntron Gas Measurement Ltd.
SenzTx Compact Oxygen Transmitter
Compact OEM oxygen transmitter with zirconia or electrochemical sensor, 4–20 mA and RS485 Modbus outputs.
Key Features
- Zirconia or electrochemical sensor technology
- Wide variety of ppm and % ranges: 0–1000 ppmV up to 0–100 % O2 (zirconia)
- Analog 4–20 mA and digital RS485 Modbus outputs
- 24 V DC ±15 % supply, M12 electrical interface
- Flow-through (1/8" NPT) or KF40 process connection
- IP66 chromated aluminum housing
- Combined sensor and high-integrity electronics
Overview
SenzTx is a compact OEM oxygen transmitter using zirconia or electrochemical sensor technology. The zirconia sensor gives fast response and long service life with low drift, while the electrochemical sensor allows measurement in background gases containing hydrocarbons. Sensor and electronics are combined in one compact unit with flow-through or KF40 process connections.
Working Principle
A zirconia or electrochemical oxygen sensor and high-integrity electronics are combined in one housing. The measurement is output as 4–20 mA and over RS485 Modbus via an industry-standard M12 connector, for in-line (direct insertion up to 6 m/s) or extractive (100–500 ml/min) installation.
Applications
Benefits
- Designed for in-line and extractive gas applications
- Zirconia: up to 5-year life, unlimited shelf life, 12-month calibration interval
- Modular design with custom labeling available
Technical Specifications
| Technology | Zirconia (ZR) or electrochemical (EC) |
|---|---|
| Range (ZR) | 0–1000 ppmV, 0–1, 0–25, 0–96, 0–100 % |
| Range (EC) | 0–1000 ppmV, 0–1, 0–25 % |
| Accuracy (25 % range) | ±0.03 % @ 1 %; ±0.02 % @ 0.1 % |
| Accuracy (1000 ppm range) | ±3 ppm @ 100 ppm; ±1 ppm @ 10 ppm |
| Response Time (T90) | < 15 s @ 25 °C |
| Pressure Range | 900–1100 mBar abs |
| Operating Temperature | ZR -25…+60 °C; EC 0…+45 °C |
| Life Expectancy | ZR up to 5 years; EC up to 18 months |
| Output | 4–20 mA |
|---|---|
| Digital | RS485 Modbus |
| Interface | M12 |
| Supply | 24 V DC ±15 % |
| Max. Power | ZR 4.8 W; EC 2.4 W |
| Ingress Protection | IP66 |
|---|---|
| Housing | Chromated aluminum |
| Process Connection | Flow-through (1/8" NPT) or KF40 flange |
| Weight | 344–397 g depending on version |
| Approvals | ETL: UL-61010-1; EMC: EN 50270; marine-approved version available (Lloyd's Register: EN 60945) |
|---|
Downloads
Datasheet (PDF)PDF
Frequently Asked Questions
What warranty is offered on this product?
All Tetracon-supplied instruments carry the original manufacturer warranty (typically 12–24 months) plus first-line local support from our Islamabad service centre.
Do you provide installation and commissioning?
Yes. Our manufacturer-trained engineers offer on-site installation, commissioning and startup training anywhere in Pakistan.
Are spares and calibration available locally?
Common spares are held in local stock. Calibration is available at our lab or on-site with NIST-traceable reference standards.
How long is the typical lead time?
Stocked items ship within 3–5 working days; engineered configurations typically 6–10 weeks depending on manufacturer schedule.
Request a Quote — SenzTx Compact Oxygen Transmitter
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