HALO 3 CH4

Trace Methane Analyzer for High-Purity Gases

Applications

  • Air Separation Units & Nitrogen Plants
  • Gas Quality Control
  • Gaseous CRMs & Calibration Gas Mixtures
  • High-Purity Gases & Systems
  • Research & Development
Detection and Matrix Range LDL Sensitivity
CH4 in N20 – 8 ppm2.0 ppb1.6 ppb
CH4 in He0 – 5 ppm1.3 ppb1.1 ppb
CH4 in Ar0 – 7 ppm1.7 ppb1.4 ppb
CH4 in H20 – 8 ppm2.0 ppb1.6 ppb
CH4 in O20 – 6 ppm1.4 ppb1.1 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) ± 4% or 1/2 of LDL
Speed of response < 1 minute to 95%
Environmental conditions 10°C to 40°C, 30% to 80% RH (non-condensing)
Storage temperature -10°C to 50°C
Gas Handling System and Conditions
Wetted materials 316 stainless steel (optional corrosion-resistant material), 10 Ra surface finish
Gas connections 1/4" male VCR inlet and outlet
Leak tested to 1 x 10-9 mbar l / sec
Inlet pressure 30 − 125 psig (3.1 − 9.6 bara)
Flow rate Up to 1.8 slpm
Sample gases Most inert, toxic, passive and corrosive matrices
Gas temperature Up to 60°C
Dimensions, H x W x D
Standard sensor 8.73" x 8.57" x 23.6" (222 mm x 218 mm x 599 mm)
Sensor rack (fits up to two sensors) 8.73" x 19.0" x 23.6" (222 mm x 483 mm x 599 mm)
Weight
Standard sensor 28 lbs (12.7 kg)
Electrical
Alarm indicators 2 user programmable, 1 system fault, Form C relays
Power requirements 90 − 240 VAC, 50/60 Hz
Power consumption 40 Watts max.
Signal output Isolated 4−20 mA per sensor
User interfaces 5.7” LCD touchscreen, 10/100 Base-T Ethernet, RS-232
  802.11g Wireless (optional), Modbus TCP (optional)
Patents
U.S. Patent #7,277,177  
Title / Description

HALO 3 CH4 Brochure (PDF)

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