HORIBA GA-370 Trace Gas Monitor

Gases measured

CO, CO₂, CH₄

Bulk gases

N₂, O₂, He, Ar, H₂, Air

Number of measurement components

1 component or 2 components (specify a measuring balance gas)

Measuring principle

Cross-flow modulation non-dispersive infrared (NDIR) absorption method

Measurement ranges

0 to 1/2/5/10 ppm

Lowest detection limit (2σ)

10 ppb

Repeatability

≤ ± 2% of full scale

Indication error

≤ ± 2% of full scale

Zero Drift

≤ ± 0.02 ppm/day, ≤ ± 0.03 ppm/week

Span Drift

≤ ± 2% of full scale/day, ≤ ± 2% of full scale/week

Response time (T₉₀)

≤ 180s

Gas flow rate

Sample gas : approx. 3.5L/min, reference gas : approx. 3.5L/min, span gas: approx. 3.5L/min

Note: A delivery pressure of 50-100kPa is recommended for both sample and reference gas.