Product Overview
The SFD-Ex-HAN Portable Multi-Gas Detector (hereinafter referred to as the detector) is an intelligent 4-in-1 gas detector independently developed and manufactured by our company, featuring high sensitivity and reliability. Equipped with different sensors, the detector can measure concentrations of more than 100 types of flammable and toxic gases in the ambient environment. It supports wireless transmission of alarm signals to trigger synchronous alarms across all devices of this series. The screen displays alarm device ID, first-level alarm, second-level alarm, along with audible and voice alarm notifications.
The detector supports alarm logging, storing up to 1999 events including power-on and power-off records. Parameters such as alarm timestamp and gas type are retained even after power outage.
Adopting a low-power microprocessor chip and built-in high-capacity lithium polymer battery, paired with a professional smart charger and complete protection circuits, the detector features long working hours and reliable safety performance.
Compact in size and easy to carry, the instrument provides accurate measurement, clear and intuitive display, and stable readings. Its well-designed panel enables simple and fast parameter configuration. Settings and alarm records are permanently stored when power is cut off, and the setting menu is protected by password for enhanced security.
Devices wirelessly send and receive alarm messages to realize networked monitoring. It delivers timely on-site alarm notifications to help prevent secondary disasters.
A diffusion version of this portable 4-in-1 detector is available: Click to view
Product Features
This detector adopts imported sensors to simultaneously monitor four types of gases. It is equipped with a full-color TFT screen for crystal-clear display. It supports intelligent temperature compensation and fault prompt alarms. Built-in wireless relay function enables synchronous alarms among devices within the same area. Powered by a rechargeable lithium battery, the unit is lightweight and easy to carry. Pump-sampling accessories are available as an optional upgrade. The product has obtained national explosion-proof certification.
Technical Parameters
| Item | Specification |
|---|---|
| Detection Gas | Combustible gases, toxic gases (1~4 sensor types configurable per customer requirements) |
| Detection Method | Pump suction type |
| Detection Range | Customized according to customer requirements |
| Accuracy | ±3% LEL (combustible gases); ±3% FS (toxic gases) |
| Repeatability | 2% |
| Response Time | T90 < 20 s |
| Alarm Sound Level | > 100 dB |
| Alarm Method | Wireless, sound & light |
| Wireless Frequency | 433 MHz |
| Alarm Levels | Two levels |
| Wireless Range | 200 m ~ 500 m |
| Operating Temperature | -40°C ~ 70°C |
| Explosion-proof Certification | Ex ia IIC T4 Ga; Ex ia II C T4 Ga |
| Protection Rating | IP66 |
| Ambient Humidity | < 95% RH (no condensation) |
| Pressure Range | 86 ~ 106 kPa |
| Battery Life | Without pump: 20 h (combustible gases), 42 h (toxic gases); with pump: 10 h (combustible gases), 13 h (toxic gases) |
| Power Supply | Lithium polymer battery, DC 3.7V 3300 mAh |
| Display | 1.5-inch full-color TFT |
| Dimensions | 156 mm × 68 mm × 30 mm |
