Winsen ZE03-NO₂ Sensor Module
NO₂-calibrated version of the ZE03 electrochemical gas module with conditioned outputs.
Manufacturer: Winsen
Technical specifications
| Target gas | NO₂ |
|---|---|
| Typical measurement range | 0–20 ppm |
| Resolution | 0.1 ppm (manufacturer manual, variant-dependent) |
| Output | UART and analog voltage |
| Platform | ZE03, gas-specific version |
Manufacturer documentation
Official product information / technical documents →
Verify exact gas configuration, part number, calibration, response, environmental limits and applicable safety certification before equipment design-in. Product data can change between revisions. AirAlign is independent of the listed manufacturer.
ZE03-NO₂ — electrochemical selectivity
The ZE03-NO₂ gas-specific cell is listed around 0–20 ppm with UART/analog conditioned outputs in the ZE03 family. Nitrogen dioxide monitoring depends on actual interfering oxidants, sensor life, temperature and humidity, so confirm the ordered sensor’s calibration protocol rather than transferring a ZE03-O₃ curve. Specify the host’s alarm/warning logic and reading interval for the intended exposure setting. The module alone is not a certified ambient-monitoring station or a complete industrial protective gas detector.
ZE03-NO₂ — two-port module electronics and toxic ppm scaling — technical model review
Source-specific manufacturer specifications, test conditions and practical engineering distinctions. The stated model/range is not a blanket safety approval or a guarantee that related part codes perform identically.
| Parameter | OEM documentation | Engineering interpretation |
|---|---|---|
| Specific gas cartridge | NO₂ electrochemical element fitted into the ZE03 generic electronic module | A ZE03 CO/O₃/Cl₂ sensor is not chemically equivalent to the NO₂ ordered SKU. |
| Nominal NO₂ span | 0–20 ppm based on Winsen’s gas/range matrix | Final gas sensor calibration, fault code and decimal setting require NO₂ manual. |
| Supply / energy | 5.0 ±0.1 V DC; less than 5 mA operating current (standard ZE03) | Do not directly apply 24 V transmitter wiring. |
| Serial communications | 3 V TTL UART plus analog sensor-amplifier output | TTL UART is NOT differential RS485 or HART. |
| Gas response | ≤25 s for NO₂ in manufacturer reference matrix | Other ZE03 gases have different physical response and ranges. |
| Environment | −20 to +50 °C, 15–90%RH noncondensing; Ø23.5 ×24.5 mm | Condensation, interfering oxidants and protected gas paths require testing. |
| Service planning | Manufacturer ZE03 nominal two-year operating life | End-of-life and contamination checks need calibration program. |
Installation, electronics and calibration
Winsen’s standard ZE03 electronics are shared between gas species but the electrochemical cartridge and analog polarity/scale differ. The manufacturer’s matrix shows NO₂ output polarity versus other gas variants, so interpret the exact amplifier signal and serial decimal precision instead of assuming a universal 0.6–3 V increase with concentration. For roadside/parking indoor NO₂ monitoring, maintain independent CO and NO₂ channels and respective ventilation alarm thresholds. Interference from ozone and gas mixtures should be addressed using the current NO₂ sensor element datasheet. A bare module is not an ATEX-approved complete instrument.
Original manufacturer technical source: Official product specifications and primary data sheet. Exact orderable variant, gas and current certificate must govern procurement or any safety function.
AirAlign manufacturer-specific editorial review · 25 October 2026. Detailed integration information is not an independent calibration or Ex/ATEX/IECEx signoff.