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Instruction Manual
748332-F
April 2003
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-5
Model NGA2000 NDIR
1-7 SPECIFICATIONS
a. General
Measurement Species:.................. Heteroatomic gases such as ammonia (NH
3
), carbon dioxide
(CO
2
), carbon monoxide (CO), carbon monoxide + carbon dioxide
ethylene (C
2
H
4
), hexane (C
6
H
14
), methane (CH
4
), nitric oxide (NO)
and sulfur dioxide (SO
2
)
Ranges: ......................................... 10 ppm fullscale to 100% fullscale (application-dependent); 4
fullscale selections, including suppressed zero ranges
Repeatability:................................. ±1% of fullscale (at constant temperature)
Minimum Detectable Level:........... 0.1% CO
2
(at 1 atm. sample pressure; application dependent)
Noise: ............................................ <1% of fullscale, peak-to-peak
Linearity:........................................ ±1% of fullscale with 4th order polynomial
Response Time: ............................ .05 to 30 seconds (selectable) for 0 to 90% of fullscale
Drift (Zero and Span):.................... <±1% of fullscale/24 hours at constant temperature (application
dependent);
<±2% of fullscale/week at constant temperature (application
dependent)
Effect of Temperature:................... <±1% of fullscale over any 10°C interval for rate of change no
greater than 10°C per hour (application dependent)
Environment: ................................. Location - Class B controlled, indoor, non-hazardous
Ambient Temperature:................... 0 to 45°C (32 to 113°F)
Effect of Flow:................................ <1% of range when sample flow rate is changed by ≤250 ml/min.
(No effect if flow rate is between 0 and 500 ml/min.)
Power Requirements:.................... 24 VDC ±5%, 100 W max.; ripple and noise: <100 mV peak-to-
peak; line and load regulations: <±1%
b. Physical
Case Classification:....................... General purpose for installation in weather-protected areas
Dimensions:................................... See Outline and Mounting Dimensions, Figure 2-5 on page 2-6
Weight: .......................................... Standard: 11 kg (24.2 lbs.); extended: 12.5 kg (27.5 lbs.)
Mounting:....................................... Inside a Platform or custom-installed in a panel
Maximum Length of LON Cable:... 1600 m (1 mile) between Analyzer Module and Platform
c. Sample
Temperature:................................. Non-flammable 0°C to 55°C (32°F to 138°F)
Flow Rate: ..................................... 500 to 1400 ml/min.
Pressure: ....................................... Maximum 690 hPa-gauge (10 psig), higher pressure in pressurized
cell applications
Particulates:................................... filtered to <2 microns
Dewpoint:....................................... <40°C (104°F), no entrained liquid
Materials in Contact with Sample:. Gold plated Pyrex, sapphire, quartz, Irtran, FEP Teflon, Viton-A,
316 stainless steel
See the Preface section of the Platform manual for specifications regarding Platform-related components
(e.g., case dimensions) and the I/O Module manual for specifications regarding I/O (e.g., relay outputs).