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NDIR Methane (CH4) Gas Sensor - IRceL CH4

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• Operating Principle: Non-Dispersive Infra-Red
• Measurement Range: 0-5% vol. Methane
• Accuracy (-20°C to +50°C): Within ± (0.1% vol CH 4 + 4% of concentration)
• Response Time (T90): < 35 Seconds
• Supply Voltage: 3-5 VDC, 3.3 V to utilise EEPROM calibration
• MTBF: > 5 years

Model Number: IRceL CH4
Data Sheet:

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Product Specification

IRceL CH4 NDIR CH4 Sensor Description
Miniature infrared sensor with on-board EEPROM and thermistor

IRceL CH4 NDIR CH4 Sensor Key Features & Benefits:
• Integrated thermistor for accurate temperature compensation
• EEPROM programmed with sensor specfic performance characteristics
• Compact Size

IRceL CH4 NDIR CH4 Sensor Technical Specifications

MEASUREMENT
Operating Principle	Non-Dispersive Infra-Red (NDIR)
Measurement Range	0-5% vol. Methane
Accuracy (-20°C to +50°C)	Within ± (0.1% vol CH 4 + 4% of concentration)
Response Time (T90)	< 35 Seconds
Repeatability: Zero 5% CH	< ±0.015% CH 4 < ±0.05% CH
Linearity	See Operating Principles OP17

ELECTRICAL
Supply Voltage	3-5 VDC, 3.3 V to utilise EEPROM calibration
Power Consumption	<100 mW at 3.3 V
Recommended Lamp Frequency	2 Hz, 50% duty cycle
Minimum Resolution	0.03% CH 4 at zero 0.1% CH 4 at range
Warm-up Time	< 10 Seconds

MECHANICAL
Housing Material	Stainless Steel (see back page)
Weight	23 g
Orientation	Any

ENVIRONMENTAL
Typical Applications	General Purpose Portable Fixed Methane Detection
Operating Temperature Range	-20°C to +50°C
Operating Humidity Range	0 to 99% RH (non-condensing)
Operating Pressure Range	700 to 1300 mBar with compensation

LIFETIME
Long Term Zero Drift	< ±0.05% CH 4 per month
Recommended Storage Temp	-20°C to +50°C
MTBF	> 5 years
Standard Warranty	12 months from date of despatch

IMPORTANT NOTE:
Connection should be made via PCB sockets only. Soldering to the pins will seriously damage your sensor.

All performance data is based on conditions at 20°C, 50%RH and 1013mBar, using City Technology recommended circuitry. For sensor performance data under other conditions, refer to the Characterisation Note and Operating Principles.

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