DS4-PH3-20 Smart Phosphine Gas Sensor
Model: DS4-PH3-20
EC Sense DS4 smart Phosphine sensor, 0 – 20 ppm range, 0.1 ppm resolution, UART digital output, factory-calibrated
The EC Sense DS4 DS4-PH3-20 is a smart Phosphine gas sensor based on printed solid-polymer electrochemical technology. It integrates a high-performance MCU and high-precision ADC, and ships factory-calibrated with Phosphine (PH3) standard gas — ready to measure on power-up with no re-calibration. It covers a 0 – 20 ppm range at 0.1 ppm resolution, with response time < 3 s (T90 < 30 s) and ±5% F.S accuracy. Housed in the standard industrial Size-4 (20 × 16.6 mm cylindrical, 3-pin VCC / GND / IO), it provides a UART 3.3 V half-duplex single-bus digital output (9600 bps) that reports concentration directly for easy integration. Self-identification, user encryption code, sleep / wake and hot-plug support make it ideal for industrial emissions, fire safety, power and smart-city corridor monitoring.
Key Features
- Printed solid-polymer electrochemical technology, anti-poisoning, long lifetime
- Factory pre-calibrated, plug & play, no re-calibration required
- UART 3.3 V half-duplex single-bus digital output, outputs concentration directly
- Standard industrial Size-4, 20 × 16.6 mm cylindrical housing, 3-pin (VCC / GND / IO)
- Self-identification and user-defined encryption code
- Sleep / wake support, ultra-low power, ideal for battery & IoT
- No warm-up, measure on power-up (< 2 min stabilization)
- Lifetime & performance self-check with early fault warning
- Wide operating range -40 ~ +55 ℃, humidity resistant
- Hot-pluggable, supports offline secondary calibration
Typical Applications
Calibration & Cross-Sensitivity
Calibrated with Phosphine (PH3) standard gas. Each sensor is factory-calibrated and ready to use without re-calibration. An open calibration protocol supports offline secondary calibration and one-click factory reset.