Emerson NGA2000 TO2 Section Maintenance and Troubleshooting, Overview Qualified Personnel

Model NGA2000 TO2

Instruction Manual

748374-F March 2003

SECTION 4

MAINTENANCE AND TROUBLESHOOTING

4-1 OVERVIEW

CAUTION

QUALIFIED PERSONNEL

This equipment should not be adjusted or repaired by anyone except properly qualified service personnel.

WARNING

PARTS INTEGRITY

Tampering with or unauthorized substitution of components may adversely affect safety of this product. Use only factory-approved components for repair.

The TO2 Analyzer Module requires very little maintenance during normal operation.

The sensor in the TO2 utilizes a liquid electro- lyte. When measuring dry gases, it may be necessary to replenish the liquid by adding dis- tilled or deionized water.

The sensor is designed to hold at least 100 cc of electrolyte. Typically, bone dry sample gas can extract approximately 5-10 cc of water per month from the sensor. It is recommended to check the electrolyte level every 3-4 months to assure that the electrolyte level is within the ac- ceptable operating limits as indicated by the la- bel on the reservoir section of the sensor.

The TO2 analyzer module is equipped with a low electrolyte alarm which indicates when re- plenishment of the sensor is required. Please refer to the Platform manual for details on con- figuring alarms.

CAUTION

REFILLING SENSOR

When refilling the sensor, only use distilled or deionized water. Do not use electrolyte or tap water as they can cause damage to the sensor. Take care not to overfill.

Sensor Cover
		Indicator,	TOP VIEW
		Electrolyte Level
	Sensor Reservoir

SIDE VIEW

Mounting Screws
(3 places)	Flow Sensor

Enclosure

Back Wall

Mounting Screws

(2 places)

Figure 4-1. Trace Oxygen Analyzer Sensor Assembly

Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Troubleshooting 4-1