• Optical NDIR sensor technology
• Sensitivity range: 0-5000 ppm CH4
• Minimum detectable level: 100 ppm
• Output: Modbus RTU 9600 bps
• No periodic calibration required
• Annual bump test and zero recommended
• Life expectancy: > 10 years

The Model SA-5100-CH4 is a highly sensitive methane (CH4) sensor utilizing non-dispersive infrared (NDIR) technology for hydrocarbon detection. It is designed for environments requiring reliable gas monitoring.

• Electrical Specifications:
  • Input Voltage: 10-30 VDC, Nominal 24VDC
  • Optional 110/220 VAC Module
  • Power Consumption: 400 milliwatts (gas measurement module), ~2.5 watts (with color local display)
  • Serial Output: Modbus RTU 9600 bps
  • Optional Local Alarm Relays: Alarm level 1 & 2 + Fault, Form “C” 2A contacts
• Environmental:
  • Temperature Range: –40°F to +158°F, -40°C to +70°C
  • Humidity Range: 15-95% non-condensing
• Mechanical:
  • Enclosure Material: Electropolished 316 stainless steel
  • Dimensions: 3.4” OD, 7.35” L; 86.5mm OD, 187 mm L; 12” W, 5” D, 4.75” H; 305mm W, 127 D, 120mm D

• Detector Type: Non-dispersive infrared (NDIR) HC absorption
• Range of Sensitivity: 0-5000 ppm CH4
• Minimum Detectable Level: 100 ppm ± 25 ppm
• Detection Method: Diffusion captive open path optical chamber
• Warranty: 2 Years

• Flame Proof
• Class I; Division 1; Groups BCD
• Class I; Zone I; Group IIB +H2

Note: Unless specified otherwise, Model SA-5100-CH4 HC sensors are calibrated to a methane response factor. Refer to the product guide for sensors calibrated for other hydrocarbon detection applications.

• Various junction boxes, local display, alarm relay module, LoRaWAN transmitter module, MODBUS transmitter module, standard connector board, and magnetic wand are available.

• Optional Digital Display
• Magnetic Wand and Safeguard Analytics portable user interface kit
• MODBUS master with data logger

• Zero stability
• Response time
• Span drift
• Signal stability
• Signal strength

Response factors for various gases are provided, with Methane having a response factor of 1.0. Other gases include Acetic Acid, Cyclopropane, Ethyl Benzene, Methanol, Iso-Propyl Alcohol, and more, each with specific response factors.