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436 Series

Product catalog summary

Overview: The Nova Model 436 Tri-Gas Analyzer is designed for monitoring hydrogen (H2) purity and purging in hydrogen-cooled power generators. It provides continuous analysis of H2 purity and purge monitoring for generators and synchronous converters.

Applications: The analyzer is used for continuous analysis of H2 purity and purge monitoring in hydrogen-cooled generators.

Features: The analyzer includes isolated 4-20mA output, low H2 purity alarms, automatic calibration, serial output with data-logging, and an oil vapor filter assembly. It offers a bright digital readout and fast response time (T90 - 10 to 15 seconds).

Calibration: The analyzer uses three channels for calibration: Channel 1 uses air for zero and 100% H2 for span; Channel 2 uses 100% CO2 for zero and 100% H2 for span; Channel 3 uses 100% CO2 for zero and air for span.

Specifications: The detection method is a temperature-controlled thermal conductivity cell. It offers three ranges: 0-100% H2 in Air, 0-100% H2 in CO2, and 0-100% Air in CO2. The resolution is ±0.1% of gas measured, with accuracy and repeatability within ±1% F.S. The response time is 10-15 seconds to 90% step change. The ambient temperature range is 32-120°F (0-50°C).

Models: The analyzer is available in different configurations: 436N4N7, 436RMN7, and 436N7MC, with options for explosion-proof cabinets and general-purpose enclosures.

Output and Alarms: Standard output is 4-20 mA for 85-100% H2 in Air range, with optional isolated outputs for other ranges. Alarms for low H2 purity and detector failure are available, with adjustable set points.

Contact Information: Nova Analytical Systems is located in Niagara Falls, NY, USA, and Hamilton, ON, Canada. Contact details include phone numbers and email addresses for sales inquiries.

Catalog excerpts

436 SERIES TRI-GAS ANALYZER FOR MONITORING PURITY AND PURGING OF HYDROGEN COOLED POWER GENERATORS APPLICATIONS For continuous analysis of hydrogen (H2) purity and for purge monitoring of hydrogen-cooled generators and synchronous converters. FEATURES • One analyzer monitors all 3 gases for purity (Range 1) or purging (Ranges 2 and 3): • Range 1: 0-100% H2 in Air • Range 2: 0-100% H2 in CO2 • Range 3: 0-100% Air in CO2 • Bright digital readout • 4-20 mA isolated output for 85-100% of H2 in Air • Thermal-conductivity cell with high accuracy and repeatability, cannot be burned out. • Explosion-proof gas detector enclosure suitable for Class 1 Division 1 Group BCD rated areas • Fast response (T90 -10 to 15 secs) • Built in pressure regulator OPTIONS • Isolated 4-20mA output for any range selected • 2 levels of low H2 purity alarms & detector fail alarm • Automatic Calibration by microprocessor control available on N7MC configuration • Serial output with data-logging software • Oil vapor filter assembly NEMA 7 Gas Detector Cabinet Choice of Control Cabinet as follows: NEMA 4 Control Cabinet 19" Rack Mount Control Cabinet NEMA 7 Control Cabinet CALIBRATION • Channel 1 - Air for Zero, 100% H2 for Span • Channel 2 - 100% CO2 for Zero, 100% H2 for Span • Channel 3 - 100% CO2 for Zero, Air for Span NOVA ANALYTICAL SYSTEMS www.nova-gas.com Oil Vapor Filter Assembly - protects analyzer from sensor fouling caused by oil-vapors from power generator

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DESCRIPTION The Nova Model 436RMN7 Tri-gas analyzer is designed specifically for monitoring H2 purity in a power generator and to monitor the purging procedure during shut down. The analyzer can measure the following gases by switch selection: Range 1: 0-100.0% H2 in Air; Range 2: 0-100.0% H2 in CO2; Range 3: 0-100.0% Air in CO2. An isolated 4-20 mA recorder output is provided for the range of 85-100% H2 in Air. The Model 436 analyzer is typically divided into 2 sections which are electrically connected. The control section contains the main microprocessor board as well as the digital readout...

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436 Series

436 Series

Catalog excerpts

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