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Item # 7900 Series, Continuous Heat Treat Atmosphere and Industrial Process Gas Analyzer Systems


The Nova 7900 Series Heat Treat Analyzer System 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 hydrogen that is compensated for the interference effects of CO, CO2, and CH4. This ensures that Hydrogen will always read correctly regardless of the background gas composition. A long life electrochemical sensor is used for PPM or % O2 analysis. In most cases, sensors are installed in a temperature controlled box to improve reading accuracy. All detected gases have a separate digital readout and linear recorder output. Various versions available for either exothermic or endothermic mixtures, or for other industrial process gases.




 Specifications   Applications   Features   Options   Calibration   

Method of Detection
Dielectric ceramic sensor for Dew Point
Electrochemical sensor for O2
NDIR infrared detector for CO, CO2, CH4 & NH3
Thermal conductivity cell for H2

Ranges Available
0-10%, 0-100.0% CH4
0-100% NH3
0-10000 PPM, 0-50.0% O2
0-2.00%, 0-100.0% CO2
0-20.0%, 0-100.0% CO
0-40.0%, 0-100.0% H2
-10 to 80°F (-23 to 26°C), 48 to 68°F (-100 to 20°C) D.P.

Resolution
0.1%, 1 PPM, 1°F (Dew Point)

Accuracy & Repeatability
±1% of full scale on all gases

Drift
Less than 2% of full scale per month

Response Time (T-90)
20-30 seconds to 90% step change

Ambient Temperature Range
32 to 122°F (0 to 50°C), Lower temperatures (-5°F, -20°C) with Cold Weather Package

Linearity
±1% of full scale

Size & Weight
Physical data will vary depending on model and enclosure required

Power
115 VAC, 60 Hz
220 VAC, 50 Hz

Output Options
4-20 mA into 500 ohms non-isolated standard
Isolated 4-20 mA, RS232, RS485, MODBUS, Ethernet outputs

Alarms
High and/or Low alarm contacts available, relay contacts SPDT 5A @ 220 VAC rating
Low flow alarm

Unique Applications
    Special models of the 7900 Series analyzers can be supplied with options such as free standing cabinets, built-in moisture removal systems, cabinet coolers, controllers, hi/low alarms, low flow alarm, 4-20 mA outputs, recorders, etc. 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.


 MORE IMAGES 

·  Application heat treat


 DOWNLOADS 

7900 Series Multi-Gas Heat Treat Analyzers
(PDF, 667KB)