Emerson NGA2000 TO2 Manuel D’Utilisation

748374-F 
March 2003 

1-4               Description and Specifications  

Rosemount Analytical Inc.    A Division of Emerson Process Management 

Measurement Species................... Trace Oxygen 

Ranges .......................................... 0 to 100 ppm  (output scalable down to 0-2 ppm fullscale) 

Accuracy........................................

±3% of reading or ±0.02% of range (except for ranges ≤ 100 ppm: 
±3% of reading or ±0.05% of range) 

Sensitivity ...................................... <10 ppb Oxygen 

Noise ............................................. 1% of fullscale, peak to peak 

Linearity .........................................

±1% of fullscale 

Response Time ............................. Typically 90% in less than 20 seconds 

Zero Drift........................................

≤±1% of fullscale/24 hours at constant temperature 

Span Drift.......................................

≤±1% of fullscale/24 hours at constant temperature 

Effect of Temperature.................... 0.32% of reading per 

°F from 70°F 

(0.58% of reading per 

°C from 21°C) 

Effect of Flow.................................

≤2% of reading for a flow change of ±250 cc/min (0.5 SCFH) 

Operating Temperature ................. 32

°F to 113°F (0°C to 45°C) 

Power Requirements..................... +24 VDC 

±5%, 10 W max. 

Ripple and Noise: <100 mV peak to peak 
Line and Load Regulations: <

±1% 

 

Sample .......................................... Non-flammable (below 100% of the LEL) 

Flow Rate ...................................... 0.5 to 1.5 L/min. 

Supply Pressure ............................ 1027 to 1082 hPa - absolute (0.2 to 1.0 psig) 

Temperature .................................. 32

°F to 113°F (0°C to 45°C) 

Particulates.................................... filtered to <0.1 mg/L; non-condensing at ambient temperature 

Sample Humidity ........................... non-condensing at ambient temperatures 

 

Materials in contact with sample ... Stainless steel, Teflon, Delrin, neoprene 

Dimensions.................................... See Figure 2-2. Trace Oxygen Analyzer Outline and Mounting 

Dimensions on page 2-3 

Weight ........................................... 6.8 kg (15 lbs.) 

Mounting........................................ Horizontal, external to Platform or custom installed in a panel 

Case Classification ........................ General Purpose for installation in weather protected area 

Max. Separation from Platform...... 1600 m (1 mile) 

 

Sample In ...................................... 1/4 inch O.D. tube fitting 

Sample Out.................................... 1/4 inch O.D. tube fitting 

 

See the Preface Section of the Platform manual for specifications regarding Platform related components.