61-1303LC Series Infrared Gas Detector

61-1303LC Series Infrared Gas Detection SensorAmpcontrol's Exd Group 2 certified Infra-red gas detectors have proven performance with reduced maintenance requirements and low cost of ownership.

Infra-red gas detectors are superior to traditional catalytic sensors as there are no consumable sensor components, subsequently reducing the cost of ownership. The unit achieves high stability, requires minimal maintenance and can be calibrated without opening the enclosure. The electronic design is conducive to retrofitting conventional catalytic gas detectors, as the same field wiring can be used.

A "NO GAS" confidence test enables routine testing without the need for calibration test gases.

The Infra Red range includes sensors for CH4 and CO2. Special sensitivity types are also available including a Hydrocarbon unit that is used for defense and marine applications.

This is a non display instrument.


  • Immune to catalyst poisons
  • Not affected by high gas concentrations (100% v/v)
  • Low maintenance requirement
  • NO GAS confidence testing
  • Less routine calibration
  • Lowest cost of ownership
  • Corrosion proof
  • No moving parts
  • Not affected by humidity
  • 4-20mA source into 600 ohms
  • Temperature stable condition
  • Vibration tested
  • Insect proof (no slots, holes or apertures)
  • Retrofit using existing 3 wire connections

Detection Method  IR Absorption 
Sampling Method Continuous Diffusion
Measuring Range 0 - 100% Lower Explosive Limit [LEL]
Accuracy ±2% Full scale [FS] Linearised
Repeatability ±1% FS
Temperature Range -30°C to + 70°C
Humidity Range 0-99% Relative Humidity [non-condensing]
Operating Voltage 11 - 28Vdc
Operating Current 135mA at 12Vdc / 75mA at 24Vdc
Connections 3-wire, 4-20mA [source]
Construction Materials
Flame Arrestor:   316 Sintered Stainless Steel
Guard:                UNS30183 Stainless Steel
Weather Sheild:   UV-resistant Rinforced Plastic
Weight Approx 1.8kg
Electrical Hazardous Area Class 1 Zone 1 Group IIC T6
Gas Type Flammable Hydrocarbons


ANZEx Ex s (d) IIC T6