NDIR propane sensor SBH-UL

for leak detectionmonitoring

Product overview
Cubic SBH-UL Series is an industrial-grade, ultra-low-power propane sensor developed based on advanced Non-Dispersive Infrared (NDIR) technology.


Designed to significantly extend the battery life of detection devices, the SBH-UL Series utilizes an LED light source to achieve ultra-low power consumption, with operating current of less than 1 mA. Based on multi-measurement ranges, full-range linearization, and digital signal output, it enables highly accurate propane leakage detection across diverse operating conditions.


Equipped with embedded temperature and humidity compensation and matrix calibration, the sensor maintains excellent signal stability even in harsh and complex environments. The built-in high-humidity alert mechanism further supports reliable fail-safe operation. Meanwhile, it features fast response time of less than 15 seconds.


In addition to its core performance advantages, the SBH-UL Series offers a long lifetime of over 10 years. As a standard industrial 4-series sensor with a modular structure, it is easy to integrate into battery-powered portable detectors, wireless monitoring terminals, and other low-power devices. Meeting the explosion-proof rating Ex ia IIC T4 Ga, the SBH-UL Series is ideal for propane monitoring across petrochemical, chemical, coal, and other industrial sectors, providing a high-reliability sensing solution with long-term stability and safety assurance.


Features

• Dual-beam NDIR technology with LED light source
• Dual-beam NDIR technology
• Low power consumption, average working current less than 1mA
• Matrix calibration to ensure high accuracy over full-temperature
• Linearization and factory calibration for accurate digital output
• Embedded temperature and humidity compensation
• Superior fast T90 time < 15s
• Long lifespan of 10 years
• Ex-proof grade Ex ia II C T4 Ga

Specifications

• Principle: NDIR
• Measurement Gas: C3H8
• Measurement Range: 0-100%LEL (0~2.2%Vol)
• Accuracy: 0~1.10%vol (0~50% LEL): ±0.06%vol (±3%LEL); 1.10%vol~2.20%vol (50%~100% LEL): ±0.11%vol (±5% LEL)
• Resolution: 0.01%Vol
• Response Time: T90<15s
• Output: UART_TTL (2.5~3.3V)
• Working Condition: -40 ~ 70, 0~98%RH (non-condensing)
• Storage Condition: -40 ~ 70, 0~98%RH (non-condensing)
• Power Supply: 3.3~5.5V DC
• Working Current: 0.8mA (25, 3.3V DC)
• Dimension: Dia20mm*H16.6mm
• Pin Definition: both 4pin or 5pin version available