GAS TRON GAS TRON GAS DETECTOR Model : GTD-2000Tx Measuring type : Diffusion Type Accuracy : ±3% / Full scale Material Aluminium alloy or Staninless steel Cable entry thread : Standard : PF 3/4" | Option : PF 1/2" M20 x 1.5P , M25 x 1.5P , NPT 1/2" , NPT 3/4" Operation temperature : -40°C ~ 80°C