Product Introduction

mini-Series LEL-2.5V Sensor
Datasheet download
Product Description

This is a miniature Methane sensor for measuring Methane gas concentration. It is designed mainly for handheld and compact instruments.

Performance Characteristics
Nominal Range 0 ~ 100% LEL
Maximum Overload 100% LEL
Sensitivity (20°C) 43 ± 8 mV/%CH4
Response Time (T90) < 10 s
Working Current < 125 mA
Linearity 0 ~ 80% LEL
Working Voltage 2.5 ± 0.1 VDC
Resolution < 1% LEL


Product Dimensions

Temperature Range -30℃ ~ 50℃
Pressure Range 80 ~ 116 kPa
Humidity Range ≤ 95%RH (25°C)
Hydrogen Sulfide Content ≤ 6 ppm (non-toxic components)
Life Time
Recommended Storage Temp 0°C ~ 40°C
Expected Operating Life 3 years in clean air
Storage Life 6 months in original packaging
Warranty 12 months

Physical Characteristics
Housing Material Nylon
Weight (Nominal) 1 g
Orientation None

Inappropriate use of the pins in product design will affect the sensor functionality. If the sensor is used in extreme environmental conditions, please contact us for more details.

Cross-Sensitivity Data
Gas Concentration (ppm) Output Signal (%vol CH4 equivalent)
Propane 1.0 1.5
Hydrogen 1.0 0.9

Note: The cross sensitivities include but not limited to the above gases. It may also respond to other gases. The data in the table above may vary from different batches of sensors and the changes of test environment. Calibration using the gases that have the cross sensitivities to this sensor is not recommended.

Temperature Data

Safety Note

This sensor is designed to be used in certain instruments for life critical applications. To ensure the sensor functions per its specifications inside the instrument, it is required to read the instrument user's guide carefully and comply with the calibration procedures by using certified target calibration gas before each use. Failure to do so may cause serious injury and fatality. Please do not open the sensor plastic enclosure because the electrolyte and other chemicals stored inside are harmful.

It is highly recommended for customers to validate the sensor performance using this document as a reference for their product designs or applications.