SMC 4101-28 Point Infrared Combustible Gas Detector

The SMC 4101-28 IR Gas Detector is a ruggedized instrument designed specifically for monitoring methane in high-vibration environments. It is built to meet extreme operating conditions in remote locations. The 4101-28 is fully certified to meet the stringent and code-compliant standards of UL 2075 as outlined in the International Fire Code.

  • Rugged design - ideal for a high-vibration locations like compressor stations
  • Non-intrusive Calibration - able to calibrate without declassifying area
  • 4-20 mA analog output - industry standard 3-wire analog current source
  • Reduced Maintenance and Cost of Ownership - longest rated and UL-approved calibration cycle for any infrared gas detector
  • Type: Infrared, Dual Wavelength
  • Default Range: 0-100% LEL Methane
  • Repeatability: +/-1% LEL 
  • Accuracy: +/- 1% for 0-50% LEL range , +/- 2% for 51-100% LEL range, +/- 1% full scale per month
  • Display: None
  • Single Output: Analog 4-20 mA Linear, current source 3-wire Non-isolated 
Operating Range
  • Ambient Temp Range: -40 to 1400F (-200 to 600C)
  • Relative Humidity: 0-95% Non-Condensing
  • Dimensions: (H x W xD) Inches: 1.5 x 4.5
  • Weight: 7.2 lb. (3.3Kg)
  • Enclosure: 316 Stainless Steel 
  • Housing: 316 Stainless Steel 
  • Enclosure Hazardous Area Classification:
  • Explosion proof, Class I, Div. 1, Groups A, B, C, D 
  • Class I, Zone 1, Group IIC, IP66, IP65, NEMA 4X, T6
  • TA= -400C to 700C II2 GD, Ex d IIC
  • Power consumption: 3-watt maximum 
  • Input voltage: 24V DC nominal: 10-30V DC 
Limited Warranty
  • 2 years 

Approvals subject to change without notice and may differ based on configuration, part number and/or country.
Contact Customer Service or check approval label on product for specific approval information.

UL 2075, ATEX, IECEx, SIL 2