NOVA - Model 875A -Continuous Analyzer for Steel-Making Atmospheres - O2, CO, CO2, CH4 and H2

The Nova 870 Series utilizes high-stability infrared detectors for the simultaneous measurement of CO, CO₂, and CH₄. In addition, the analyzer can also be supplied with a non-consumable, long-life thermal conductivity cell for H₂ that is compensated for the interference effects of CO, CO₂, and CH₄. This ensures that H₂ will always read correctly regardless of the background gas composition.  A non-depleting paramagnetic or electrochemical sensor may be used for O₂ analysis.  All sensors/detectors are temperature-controlled or temperature-compensated for maximum analytical stability. 

Auto calibration functionality allows easy calibration without user intervention.  The included Serial Output Package allows connection of analyzer to personal computers via a choice of USB/RS-232/RS-485. Data recording software is also included.

• Method of Detection : NDIR infrared detector for CO, CO2 and CH4Paramagnetic detector or electrochemical sensor for O2Thermal conductivity cell for H2
• Ranges Available : 0-10.0%, 0-50.0%, 0-100.0% CH40-10.0%, 0-50.0%, 0-100.0% CO0-10.0%, 0-50.0%, 0-100.0% CO20-2.0%, 0-25.0%, 0-50.0%, 0-100.0% O20-5.0%, 0-50.0%, 0-100.0% H2
• Resolution : 0.1% for all gases
• Accuracy & Repeatability : ± 1.0-1.5% of full scale, depending on gas measured
• Drift : Less than 2% of full scale per month
• Response Time (T-90) : 20-30 seconds to 90% step change
• Ambient Temperature Range : 40-104 °F (4 to 40°C). Optional -22 to 158 °F (-30 to 70 °C) with Outdoor Packages
• Linearity : ± 1.5% of full scale
• Size & Weight : 24" H x 24" W x 10" D @ 90 lbs (61 x 61 x 25 cm @ 20 kg). Physical data will vary depending on model and enclusure required
• Power : 115 VAC 60 Hz (220 VAC 50 Hz available)
• Output Options : Isolated 4-20 mA standardRS232, RS485, MODBUS®, Ethernet outputs optional
• Alarms : High and/or low alarm contacts available, relay contacts SPDT 5A @ 220 VAC rating.

For continuous monitoring of atmospheres associated with steel-making and metal-working or other industrial processes. Analysis of any combination of methane (CH₄), carbon dioxide (CO₂), carbon monoxide (CO), hydrogen (H₂) and oxygen (O ₂). Offers a viable and more economical alternative to mass spectrometer analysis for these gases.

• Infrared detector for reliable measurement of CO, CO₂ and CH₄. Detector may be cleaned in the field.
• Thermal conductivity cell for H₂
• Oxygen analysis by choise of electrochemical or paramagnetic oxygen sensor
• Sensors/detectors temperature controlled or compensated for maximum analytical stability
• H₂ reading is compensated for the interference effects of the other gases measured
• High ranges on each channel available (up to 100%)
• Touch-screen display for gas readings
• Built-in sample pump or pressure regulator
• Automatic calibration & serial output package
• Isolated 4-20 mA analog recorder outputs
• Durable stainless steel tubing & sample components
• Automatic moisture removal system included