HALO H2

ppb-level H2 detection

Applications

  • Gaseous CRMs & Calibration Gas Mixtures
  • High-Purity Gases & Systems
  • Research & Development
Detection and Matrix Range LDL Sensitivity
H2 in N20 – 500 ppm10 ppb8 ppb
H2 in Ar0 – 200 ppm8 ppb6 ppb
H2 in He0 – 125 ppm5 ppb4 ppb
H2 in O20 – 250 ppm50 ppb4 ppb
H2 in Clean Dry Air (CDA)0 – 450 ppm50 ppb7 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 < 3 minutes 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 316L stainless steel, 10 Ra surface finish
Leak tested to 1 x 10-9 mbar l / sec
Gas connections 1/4” male VCR inlet and outlet
Sample inlet pressure 10 − 125 psig (1.7 − 9.6 bara)
Sample flow rate 0.5 slpm (± 20%)
Sample gases Most inert matrices
Gas temperature Up to 60°C
Utility gas supply* Mixture of 1% O2, 99% N2 with ~15 sccm, 20 − 125 psig
Dimensions, H x W x D
Standard sensor 8.73" x 19.0" x 23.6" (222 mm x 483 mm x 599 mm)
Weight
Standard sensor 45 lbs (20.4 kg)
Electrical
Alarm indicators 2 user programmable, 1 system fault, Form C relays
Power requirements 90 − 240 VAC, 50/60 Hz
Power consumption 200 Watts max.
Signal output Isolated 4−20 mA
User interfaces 5.7” LCD touchscreen, 10/100 Base-T Ethernet, RS-232
  802.11g Wireless (optional)
Patents
U.S. Patent #7,277,177 • U.S. Patent # 7,255,836  
   
*O2/N2 supply (maximum 10 ppm H2O and H2
impurity) is required for sample conditioning
via catalytic conversion.
Title / Description

HALO H2 Brochure (PDF)

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