Recommended Circuit: The recommended measuring circuit uses two 200 - ohm resistors (R1, R2) and a 3K - ohm variable resistor (VR1). The circuit design is simple, which facilitates integration into various gas detection devices without complex circuit debugging.
Design Advantages: It has the advantages of small size, which helps to save installation space. Moreover, it can be matched with detectors for compensation without adjusting the resistance, which simplifies the integration process. At the same time, its excellent stability and low drift characteristics ensure long - term reliable operation in industrial environments.

Typical Applications:

Fixed Combustible Gas Alarms/Detectors: It is suitable for being installed in industrial workshops, warehouses and other places to continuously monitor the concentration of combustible gases and issue early warnings in time when the gas concentration approaches the dangerous threshold.
Gas Densitometers: It can be integrated into gas densitometer equipment to accurately measure the concentration of combustible gas components, providing data support for industrial production process control and gas quality detection.

Supply Voltage	AC 2.0 ± 0.1V (50 - 60Hz); DC 2.0 ± 0.1V
Operating Current (at 2.0V supply)	AC 175 ± 15mA (50 - 60Hz); DC 175 ± 15mA
Operating Temperature Range	-20°C to +60°C
Operating Humidity Range	Less than 95%RH (without dew condensation)
Storage Temperature Range	-30°C to +70°C
Storage Humidity Range	Less than 99%RH (without dew condensation)
Detection Range	0 - around 60%LEL (Accuracy decreases when exceeding 60%LEL, except for acetylene)

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