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NDIR Methane (CH4) Gas Sensor - IRceL CH4

• 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: Date Sheet File
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  • NDIR Methane (CH4) Gas Sensor
  • NDIR Methane (CH4) Gas Sensor
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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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