NDIR Sulphur Hexafluoride (SF6) Gas Sensor, 0~1000/5000ppm

Professional sulfur hexafluoride (SF₆) sensors for sale, providing precise detection for industrial monitoring and power equipment. The gas sensors utilize non-dispersive infrared (NDIR) technology with measurement ranges of 0~500ppm or 0~1000ppm and 1ppm resolution. The sensors support RS485, 4-20mA, 0-5V, and 0-10V outputs, featuring an average power consumption of just 0.95W, making them ideal for long-term operation.

Feature

• The SF6 gas sensor features rapid, sensitive response and robust anti-interference capability.
• Calibrated with standard gases, this sensor delivers long service life, high accuracy, excellent repeatability, and superior stability.
• Additionally, the device employs RS485/4-20mA signal output, supports the standard ModBus-RTU communication protocol, allows ModBus address configuration, enables baud rate adjustment, and achieves a maximum communication distance of 2000 meters.
• Field power supply utilizes a wide voltage range of 10~30V DC, accommodating various on-site DC power sources.

Dimension (unit: mm)

NDIR Principle

This gas sensor employs NDIR spectral absorption technology and actively extracts the target gas. As a greenhouse gas, SF6 exhibits strong absorption characteristics for infrared light within specific wavelength bands. When infrared radiation emitted by an infrared light source passes through a certain concentration of the target gas, the light intensity at the specific wavelength (10.6 μm for SF6) changes proportionally to the gas concentration. This change is described by the Lambert-Beer law. Therefore, the gas concentration can be calculated based on the variation in light intensity.

Connection

Installation