Instruction Manual

HAS60E-IM-HW

June 2007

NGA 2000 CLD

 

 

 

 

 

 

 

 

 

 

 

Exhaust

Ozonator Air

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Exhaust Fan

Sample IN

Intake Fan

Figure 2-2: CLD Rear Panel Connections

b.Connections

Connect inlet and outlet lines for sample, ozonator air, and exhaust to appropriately labeled fittings on the rear panel (see Figure 2-2) , each of which is a 1/4-inch ferrule -type compression fitting.

Stainless steel or Teflon tubing is recommended for the sample line. Exhaust tubing should be 1/4 inch (6.3 mm) or larger, and made of stainless steel or Teflon.

Zero/span gases should be introduced at the SAMPLE IN fitting at normal sample inlet flow rate/pressure.

c.Specifications

Each gas should be supplied from a cylinder equipped with a clean, non-corrosive, two-stage regulator. A shutoff valve is recommended.

Ozonator Source Gas

For analyzers with ranges less than 0 to 2,500 ppm NOx free ambient air should be used for generation of the ozone required for the chemiluminescence reaction. For ranges higher than 0 to 2,500 ppm, NOx free oxygen is required. See Table 2-1for correct pressure settings.

When using ambient air an external air conditioning unit (LAM) can optionally be used (contact your local service or sales office).

CAUTION

At no time should ozonator gas pressure exceed 2,070 hPa-gauge (30 psig). Damage to internal components may occur if this pressure level is ex- ceeded.

Zero Gas

Nitrogen (N2) is recommended for use as zero gas. Alternatively synthetic air or NOx free ambient air can be used.

Calibration Gas

A mixture of NO in a background of nitrogen is recommended as span gas. For maximum accurancy, the concentration of NO in the span gas should be about 80 % to 100 % of full scale range.

Sample Gas Pressure

See Table 2-1for correct pressure settings.

Bypass Sample Gas Flow

Bypass sample gas flow rate should be between 700 and 2,000 cc/min. with backpressure regulator pressure (see Capillary Pressure in „Current Measurement Pa- rameters“ menu, which can be viewed by selecting the PARMS softkey in "Main Menu") adjusted to 344 hPa (5 psig).

Emerson Process Management GmbH & Co.OHG

Installation 2 - 3