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All Categories > By Primary Gas to be Measured > Oxygen Analyzers (O2) > Continuous Oxygen Analyzers for Hazardous Locations (O2) > Continuous Process Oxygen Gas Analyzer by Paramagnetic Sensor - 412 Series > Item # Model 412RMN7  


Item # Model 412RMN7, Model 412RMN7 Paramagnetic Oxygen Analyzer, ex-proof sensor housing with rack mount control cabinet (two separate enclosures)

The Nova 412 Series O2 analyzers utilize a magneto-dynamic paramagnetic measuring cell and powerful selenium cobalt magnet assembly with on-board pre-amplification to provide the highest standard of O2 analysis. Accuracy is further augmented by built-in barometric pressure compensation and detector temperature control. For high purity applications (Model 412HP), a high resolution digital readout is added.

In operation, the magneto-dynamic cell makes use of the principle that oxygen is drawn into a magnetic field, thereby increasing the force exerted on a diamagnetic body suspended in the field. The amount of current necessary to restore the position of the body is directly proportional to the O2 level of the sample gas. Very few other gases respond this way, making this method of detection very specific to oxygen.

Cabinets: Ex-proof sensor housing for Class 1 Div 1 Grp BCD areas, with rack mount control cabinet for non-hazardous areas (two separate enclosures)





Specifications  · Applications  · Features  · Options  · Calibration  · Unique Applications

Specifications

Method of Detection
Magneto-dynamic paramagnetic O2 cell

Ranges Available
With back-pressure control: 1.00, 2.00, 5.00, 25.00, 100.0 % O2
Without back-pressure control: 1.0, 2.0, 5.0 % O2

Resolution
0.1% or 0.01% O2, depending on back-pressure control

Accuracy & Repeatability
±1% of full scale

Drift
±0.2% of full scale per month

Response Time (T-90)
4 - 5 seconds at a sample flow of 1 LPM

Ambient Temperature Range
40 to 104°F (4 to 40°C)

Linearity
±0.5% of full scale or 0.05%, whichever is greater

Size & Weight
EX-PROOF: 61H x 33W x 31H cm (24"H x 13"W x 12"D)
RACK MOUNT: 22H x 48W x 47D cm (8.7"H x 19"W x 16"D)

Power
115 VAC, 60 Hz
220 VAC, 50 Hz

Output Options
4-20 mA into 500 ohms non-isolated standard

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

Analyzer Type
O2 Analyzer

Hazardous Area Rating Options
Control Cabinet - General Purpose, Non-Hazardous
Detector Cabinet - NEMA7 Class 1 Division 1 Groups BCD


Applications
      For continuous analysis of oxygen (O2) in process gas streams that contain gases that interfere with other methods of O2 measurement. For high accuracy or high purity applications.


Features
  • Highest accuracy O2 analyzer, very stable
  • Fast response (T90 - 4 to 5 seconds) and bright digital readout
  • Linear over entire 0-100% range
  • Microprocessor control
  • Non-consumable O2 detector, no periodic replacement required
  • Built in sample pump or pressure regulator, and 4-20mA output


Options
  • Hi/Low gas, low flow alarms available
  • Isolated analog, RS485 outputs available
  • High purity version available for 98-100% O2 (412HP)


Calibration
  • Nitrogen for zero
  • Air or analyzed calibration gas for span


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.



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