HALO KA Max CH4

Sub-ppb methane detection in bulk gases

Applications

  • High-Purity Gases & Systems
  • Research & Development
Detection and Matrix Range LDL (3σ) Precision (1σ) @ zero
CH4 in N20 – 8 ppm500 ppt200 ppt
CH4 in He0 – 5 ppm400 ppt140 ppt
CH4 in Ar0 – 7 ppm450 ppt150 ppt
CH4 in H20 – 8 ppm500 ppt200 ppt
CH4 in O20 – 7 ppm500 ppt200 ppt
Performance
Operating range See Detection Capability table
Detection Limit (3σ/24h) See Detection Capability table
Precision (1σ, greater of) ± 0.75% or 1/3 of LDL
Accuracy (greater of) ± 4% or 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
Gas connections 1/4” male VCR inlet and outlet
Leak tested to 1 x 10-9 mbar l / sec
Inlet pressure 10 − 125 psig (1.7 − 9.6 bara)
Flow rate ∼2 slpm in N2 (gas dependent)
Sample gases See Detection Capability table
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
  USB, RS-232, RS-485
Data storage Internal or external flash drive
Patents
U.S. Patent #7,277,177  
*The Detection limit (LDL) is defined as 3σ over 24h
or the H2O drydown limit, whichever is higher
 
Title / Description

HALO KA Max Brochure (PDF)

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