Emerson NGA2000 TO2 instruction manual Section Installation, Unpacking, Assembly, Location, Gases

Model NGA2000 TO2

Instruction Manual

748374-F March 2003

SECTION 2

INSTALLATION

2-1 UNPACKING

If the Trace Oxygen (TO2) Analyzer Module is received as a separate unit, carefully examine the shipping carton and contents for signs of damage. Immediately notify the shipping carrier if the carton or contents is damaged. Retain the carton and packing material until all components associated with the TO2 Analyzer Module are operational.

2-2 ASSEMBLY

Before installation of the TO2 Analyzer Module, electrolyte must be added to the Sensor. Follow the procedure described below under Section 2- 2a below.

After addition of electrolyte, locate the analyzer module on an appropriate mounting surface and connect the network cable to either the NET- WORK 1 or NETWORK 2 connection on the Analyzer Module, and the NETWORK connec- tion on the Platform network I/O port. (See Figure 2-1 on page 2-2 and Figure 2-4 on page 2-5.)

a.Electrolyte Addition

Before adding electrolyte to the Sensor, it is recommended to check the Sensor for pos- sible leakage caused by damage in ship- ment. To check the Sensor for leakage, remove the top cover of the Analyzer Mod- ule and locate and remove the 5 mounting screws which hold the Sensor Assembly (Sensor, flow meter, plumbing, inlet/outlet fittings) to the module (see Figure 4-1 on page 4-1). Be careful not to lose these screws as they have metric threads. Care- fully lift out the Sensor assembly and re- move from the analyzer module. Place on a flat surface and remove the black Sensor cover by unscrewing counterclockwise.

Add distilled or deionized water to the Sen- sor to the maximum level indication on the Sensor reservoir. Let Sensor stand for ap-

proximately 15 minutes and check for leaks around the base of the reservoir, and at the seams and corners. If a leak is found, con- tact the factory before proceeding. Drain the Sensor.

Fill the Sensor with one bottle of electrolyte supplied with the analyzer module. Use the entire contents of the bottle.

NOTE:

Do not add water. The volume and con- centration of the bottled electrolyte is pre-measured.

Reinstall the black Sensor cover and care- fully reinstall the Sensor Assembly inside the Analyzer Module. Do not the tilt the Sensor Assembly excessively as electrolyte may leak out.

2-3 LOCATION

(See Figure 2-2 on page 2-3) The TO2 Ana- lyzer Module comes standard with mounting ears for easy installation on flat, horizontal sur- faces. , Install the TO2 Analyzer Module in a clean, weather-proofed, vibration-free location free from extreme temperature variations and moisture. For best results, install the instrument near the sample stream to minimize sample transport time.

, Operating ambient temperature is 0 °C to 45

°C (32 °F to 81 °F). Temperature change should not exceed 10 °C (18 °F) per hour. The same temperature restrictions apply to the location of the zero and span gas cylinders.

2-4 GASES

a.Requirements

The TO2 Analyzer Module requires only a standard of accurately known composition for use as a span gas. The span gas should be supplied from a cylinder equipped

Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-1