Continuous Process Analyzer for Binary Gas Mixtures by Thermal Conductivity
Continuous Process Analyzer for Binary Gas Mixtures by Thermal Conductivity
SKU:MUL-fc84c4
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$49.99
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Continuous Process Analyzer for Binary Gas Mixtures by Thermal Conductivity
$49.99
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Continuous Process Analyzer for Binary Gas Mixtures by Thermal Conductivity
$49.99
Quantity: 1
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The Nova 425 Thermal conductivity (TC) Analyzer has many applications in industry where the measurement of one gas in a two gas or some multi-gas mixtures is required. The Nova TC cell is temperature controlled and its high stability enables it to be used even in high purity measurements. Since the TC cell does not consume the sample, have any moving parts, hot wires, or sealed chemicals, it will last for many years.In operation, the TC cell detects the rate at which the sample gas conducts heat away from a Resistance Temperature Device (RTD) with reference to a similar RTD surrounded by air (or other reference gas). A sample gas containing the gas to be measured will cause the temperature, and its resistance, to change with respect to the reference RTD. This will cause an output from the Wheatstone bridge measuring circuit which is calibrated and displayed on a digital meter.
Product Specifications
Applications 0
For continuous analysis of many binary gas mixtures comprised of H2, CO2, O2, CH4, SO2, Ar, He, NH3, SF6, air, and others. Applications include heat treating atmospheres, welding gas mixtures, blanketing gas mixtures, ammonia synthesis, leak detection, purge monitoring, flue gas, magnesium blanketing by SF6 and others.
Calibration 0
Air or nitrogen for zeroAnalyzed calibration gas for span
Features 0
Bright digital readoutLower cost than infrared, GC or mass spectrometerHigh stability, microprocessor-controlled, long-life thermal conductivity (TC) cellEasy-to-maintain modular layoutBuilt in sample pump or pressure regulator4-20 mA outputsSensors mounted in temperature controlled heated box to improve accuracy
Options 0
Hi/Low gas, low flow, and diagnostic alarms availableIsolated analog, RS232, RS485, MODBUS, and Ethernet outputs availableSample conditioning systems available for removal of moisture, acidic gas, and dustCabinet purge system available for use in hazardous areasOne-step 'cal-now' button calibration with touch screen LCD displayFull automatic calibration with touch screen LCD displayCold weather package for operation to -5°F (-20°C)Cabinet coolers can be fitted to most models
Specifications Accuracy Repeatability
±1% of full scale
Specifications Alarms
High and/or Low alarm contacts available, relay contacts SPDT 5A @ 220 VAC rating | Low flow alarm
Specifications Ambient Temperature Range
32 to 122°F (0 to 50°C), Lower temperatures (-5°F, -20°C) with Cold Weather Package
Specifications Drift
Less than 1% of full scale per month
Specifications Industry Type
Online Process Analysis
Specifications Linearity
±1% of full scale
Specifications Method Of Detection
CH4 in N2, air, or CO2; SF6 in CO2, etc. | CO2 in N2, H2, air, Ar, O2, He, etc | O2 in Ar, CO2, He, H2, etc | RTD-based TC cell can be used to measure almost any binary gas mixture such as H2 in N2, O2, air, SO2, Ar, He, NH3, etc
Specifications Models And Enclosure Options
NEMA12 (IP52) | NEMA4 (IP65) | NEMA4X (IP65) | NEMA7 | NEMA7 UL/CSA
Specifications Mounting Options
Panel mounted | Rack mounted | Wall mounted
Specifications Output Options
4-20 mA into 500 ohms non-isolated standard | Isolated 4-20 mA, RS232, RS485, MODBUS, Ethernet outputs
Specifications Power
115 VAC, 60 Hz | 220 VAC, 50 Hz
Specifications Primary Gas To Be Measured
Ammonia (NH3) | Argon | Carbon Dioxide (CO2) | Helium (He) | Hydrogen (H2) | Methane (CH4) | Nitrogen (N2) | Oxygen (O2) | Sulfur Dioxide (SO2) | Sulfur Hexaflouride (SF6)
Specifications Ranges Available
0-2% to 0-100% and suppressed ranges such as 95-100%
Specifications Resolution
0.1% of gas to be measured
Specifications Response Time T 90
10-15 seconds to 90% step change
Specifications Size Weight
Dimensions will vary depending on enclosure style and options required
Specifications Unique Applications
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.