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Method of Detection |
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BTU - continuously calculated from the two flammable gases in the mixture
CO/CO2 - dual channel, high accuracy NDIR infrared detector
H2 - thermal conductivity sensor
N2 - continuously calculated by subtraction of other gases from 100%
O2 - customer replaceable electrochemical 'fuel cell' sensor
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Ranges Available |
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Carbon Dioxide (CO2) - 0-50.0%
Carbon Monoxide (CO) - 0-50.0%
Hydrogen - 0-10.0% and 0-20.0%
Oxygen - 0-5.0%
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Resolution |
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0.1% for all gases measured
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Accuracy & Repeatability |
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±1% of full scale
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Drift |
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Less than 2% of full scale per month
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Response Time (T-90) |
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T90 < 30 seconds not including transmission time to process
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Ambient Temperature Range |
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32 to 122°F (0 to 50°C), lower temperatures with cold weather package (to -20°C; -5°F)
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Linearity |
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±1% of full scale
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Size & Weight |
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Main Analyzer Cabinet Dimensions: 30" H x 24" W x 22" D (76 x 61 x 56 cm)
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Power |
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115 VAC, 60 Hz
220 VAC, 60 Hz
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Output Options |
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Ethernet and 4-20 mA output for all gases and alarm conditions
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Alarms |
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Low Flow, Low Span1, Low Span 2, Low Zero and Hi cond. Temp. Also has calibration Fail Alarm
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Analyzer Type |
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Blast Furnace Top Gas Analyzer
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Hazardous Area Rating Options |
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Class 1, Div 2 Hazardous Area Rating
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Designed for the continuous monitoring of O2, CO, CO2, and/or H2 gases from blast furnaces or other continuous industrial processes where an uninterrupted stream of gas concentration data is critical. Calculated values of BTU, N2 and efficiency are also available.
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- Cabinet purge system for use in dusty or hazardous locations
- Cold weather package for operation to -5°F (-20°C)
- Cabinet coolers can be fitted to most models
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All Nova analyzers are built using proven technologies and techniques. If this product does not suit your application, please contact Nova. In many cases, we are able to build an analyzer specific to your needs.
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- High capacity sample pump (where sample motivation is required) and high flow by-pass improves overall system response time
- Compression-style moisture removal eliminates use of failure-prone Pelletier elements
- Redundant heated filters allow user to remotely switch from a blocked filter to an unblocked filter, minimizing down time due to filter blockage.
- Automatic blow back of heated filter and probe, can be sequenced with auto calibration, or based on sample vacuum limit
- Digital control maintains constant sample flow even as filters start to plug, reducing operator required
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- High accuracy gas detectors with full hydrogen compensation
- Detection of CO & CO2 by reliable field cleanable non-dispersive infra red detector
- Detection of O2 by long-life electrochemical sensor
- Detection of H2 by thermal conductivity cell
- Sensors mounted in temperature controlled 19" (48cm) rack mount drawer to reduce drift
- Rack mounted sensor drawer, which is integral to the main cabinet, permits quick swap with replacement rack
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- Large graphical touch screen display
- Auto calibration with user defined calibration frequency and purge duration
- One-step 'CAL NOW' button allows full calibration without opening cabinet
- Ethernet and 4-20mA outputs suitable for data collection by SCADA systems
- Diagnostic alarms quickly notify operator of special faults
- Diagnostic screen aids operator testing of gas analyzer
- Troubleshooting guide aids operator in testing sample conditioning system and identifying parts to be changed
- Maintenance alerts notify operators that filters should be checked or changed. Change frequency can be set by user
- Password-protected user-adjustable parameters allow the operator to 'tweak' the operation of the analyzer without having to change the code
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