LaserTrace 3 CH4

Sub-ppb-level methane detection

Applications
  • Gaseous CRMs & Calibration Gas Mixtures
  • High-Purity Gases & Systems
  • Research & Development
Detection and Matrix Range LDL Sensitivity
CH4 in N20 – 8 ppm1.0 ppb0.8 ppb
CH4 in He0 – 5 ppm0.7 ppb0.5 ppb
CH4 in Ar0 – 7 ppm0.9 ppb0.7 ppb
CH4 in H20 – 8 ppm1.0 ppb0.8 ppb
CH4 in O20 – 5 ppm0.7 ppb0.5 ppb
Performance
Operating range See Detection Capability table
Detection limit (LDL, 24 h peak-to-peak) See Detection Capability table
Sensitivity (3σ) See Detection Capability table
Precision (1σ, greater of) ± 0.75% or 1/3 of Sensitivity
Accuracy (greater of) ± 3% or 1/2 of LDL
Speed of response < 1 minute to 95%
Environmental conditions 10°C − 40°C, 30% − 80% RH (non-condensing)
Storage temperature -10°C − 50°C
Gas Handling System and Conditions
Wetted materials 316L stainless steel (optional Hastelloy®), 10 Ra surface finish
Gas connections 1/4” male VCR inlet and outlet
Leak tested to 1 x 10-9 mbar l / sec
Sample inlet pressure 30 − 125 psig (3.1 − 9.6 bara)
Flow rate 0.9 – 3.9 slpm (gas dependent)
Sample gases Most inert, toxic, passive and corrosive matrices
Gas temperature Up to 60°C
Dimensions, H x W x D
Electronics unit 14" x 19" x 14" (356 mm x 483 mm x 356 mm)
Standard sensor 7" x 4.75" x 27" (178 mm x 121 mm x 686 mm)
Sensor rack (fits up to four standard sensors) 8.75" x 19" x 27" (222 mm x 483 mm x 686 mm)
Weight
Electronics unit 32 lbs (14.5 kg)
Standard sensor 38 lbs (17.2 kg)
Electrical
Alarm indicators User programmable setpoints (1 per sensor), Form C relays
Power requirements 90 − 240 VAC, 50/60 Hz
Power consumption 200 Watts max.
Signal output Isolated 4−20 mA per sensor
User interfaces 10.4” LCD touchscreen, PS/2 for mouse and keyboard
User interfaces 10/100 Base-T Ethernet, 2 USB ports, RS-232
Patents
U.S. Patent #7,277,177  
Title / Description

LaserTrace 3 CH4 Brochure (PDF)

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