O₂ Sensor Type A-01ST | Exhaust Gas Oxygen Sensor
Galvanic O₂ sensor for exhaust gas analyzers – Made in Germany, 3‑pin Molex® connector, individually tested
Key Features
- ✔ Measurement range 0–25 Vol.% O₂
- ✔ Response time t₉₀ < 5 s (at 20 °C)
- ✔ Accuracy: < 2 Vol.% ± 0.1 %; up to 25 Vol.% ± 0.5 %
- ✔ Initial signal (A‑01ST): 10.0–14.0 mV (dry air)
- ✔ 3‑pin Molex® connector; NTC temperature compensation; recommended load ≥ 10 kΩ
Description
The NRC O₂ Sensor Type A‑01ST is a galvanic oxygen sensor designed for accurate measurement of oxygen concentration in vehicle exhaust gases (0–25 Vol.% O₂). Developed and manufactured in Germany; each sensor is individually tested to ensure long‑term stability and reliable readings.
Compatible equipment manufacturers:
Suitable for exhaust gas analysis systems with a 3‑pin Molex connector, including Sun and Snap‑on.
Technical Specifications
| Part‑No. | 1397 (A‑01ST) |
| Measurement range | 0–25 Vol.% O₂ |
| Accuracy | < 2 Vol.% ± 0.1 %; < 25 Vol.% ± 0.5 % |
| Response time t₉₀ | < 5 s (at 20 °C) |
| Initial output signal | 10.0–14.0 mV (dry air, 1013 hPa) |
| Recommended load resistance | ≥ 10 kΩ |
| Operating temperature range | 0 – 50 °C |
| Pressure range | 700 – 1750 hPa |
| Humidity influence | −0.03 % rel. O₂ indication per % RH |
| Drift | ≈ 10 % per year |
| Expected lifetime | ~ 500,000 Vol.%·h (typical); < 3 years in ambient air |
| Materials (wetted parts) | PA12, PPS, PTFE, stainless steel |
| Weight | Approx. 25 g |
All values according to official datasheet (A‑01 EN); unless otherwise specified: 25 °C, 50 % RH, 1013 hPa.
Returns & Warranty
Return policy according to eBay guidelines (legal warranty applies). Official datasheet (EN): Download PDF.