YJJ ZE03‑HF Hydrogen Fluoride Sensor Module 0‑10ppm HF UART‑TTL & Analog Output

Product Description:

YJJ ZE03‑HF Hydrogen Fluoride Sensor Module 0‑10ppm HF UART‑TTL & Analog Output

Features:

Core technical parameters

| Item | Parameter |

| Detection gas | HF (Hydrogen Fluoride) |

| Measurement range | **0 - 10 ppm** |

| Resolution | 0.1 ppm |

| T90 response time | ≤ 90 s 

| Power Supply | DC 5V ± 0.1V, operating current < 5mA 

| Digital Output | UART-TTL (3.3V level); 9600-8-N-1; Active reporting / question-and-answer mode; Direct output of ppm concentration |

| Analog Output VO | 0-3V linear voltage output, concentration-voltage one-to-one correspondence |

| Temperature Compensation | On-board temperature sensor, firmware automatically performs temperature compensation |

| Operating Environment | -20 to +50℃; 15-90%RH, **strictly prohibit condensation** Winsen Ele... |

| Storage conditions | -20 to 50℃, 30 - 70% RH |

| Expected lifespan | 2 years (in an air environment) 

| Dimensions | Φ23.5 mm × 24.5 mm | 

Pin Definition (5 Pin, same as ZE03 series standard pins)

| Pin | Definition | Explanation |

| --- | --- | --- |

| VCC | Power Supply | DC5V |

| GND | Power Ground | Common Ground |

| TXD | Module Transmission | Connect to the microcontroller's RX (3.3V level, direct connection to 5V IO is prohibited) |

| RXD | Module Reception | Connect to the microcontroller's TX |

| VO | Analog Voltage Output | 0-3V analog signal |

Output Explanation

1. UART Serial Port (Preferred) **: Directly outputs HF concentration (one decimal place), module temperature, fault status; supports command reading and address modification. Level 3.3V, 5V microcontrollers must perform level conversion.

2. **Analog VO Output**: 0-3V proportional to 0-10ppm; Analog output accuracy is weaker than the serial port, suitable for simple collection.

Application Scenarios

- Monitoring of HF leakage in chemical and semiconductor etching processes

- Detection of toxic HF gas in metallurgy, electroplating, and acid washing workshops

- Fixed transmitters and portable detectors in waste gas treatment and hazardous chemical factories

- PLC, industrial control equipment, and secondary development integration for gas alarms

Specifications: