381 Series0 pages

381 SERIES
PORTABLE TRI-GAS ANALYZER FOR
HYDROGEN/NITROGEN/AIR PURGING

APPLICATIONS
For checking purity of hydrogen (H2) in H2-cooled generators and synchronous converters.
The Model 381 Series will also monitor the safe purging of H2 during shutdown or startup.
This model is designed specifically for generators that are purged with nitrogen (N2)
instead of carbon dioxide (CO2).

FEATURES
• Rugged design that is easy to operate and maintain
• Fast warm up and response
• Monitors 0-100% H2 in air, 0-100% H2 in N2,
0-100% Air in N2
• Long-life thermal conductivity H2 cell
• Rugged long-life electrochemical O2 sensor
• Digital readout displays active range
• Rechargable battery operation
• Built-in flow meter, flow control valve, and pump
• Built-in pressure regulator prevents over pressuring
of pump and sensor
• Suitcase cabinet has carry handle and is
weatherproof when closed
• Sample pressure ranges 0.5 PSI to 125 PSI

RANGES
• Range 1: 0-100% H2 in Air
• Range 2: 0-100% H2 in N2
• Range 3: 0-100% Air in N2

NOVA ANALYTICAL SYSTEMS
www.nova-gas.com