Specifications

748420-A
August 1999
20
Trace Oxygen Analyzer Module
Rosemount Analytical NGA 2000
4
M
AINTENANCE AND
T
ROUBLESHOOTING
Sensor Cover
Indicator,
Electrolyte Level
Sensor Reservoir
Mounting Screws
(3 places)
Enclosure
Back Wall
Mounting Screws
(2 places)
Flow Sensor
SIDE VIEW
TOP VIEW
F
IGURE
4-1. T
RACE
O
XYGEN
A
NALYZER
S
ENSOR
A
SSEMBLY
4.1.1 W
ATER
A
DDITION
To add water:
1. Remove the top cover of the analyzer module.
2. Unscrew the black sensor cover.
3. Slide the cover back just enough to allow the neck of the fill bottle to fit into the sensor
reservoir.
4. Add distilled or deionized water using the fill bottle provided with the analyzer module.
Fill to approximately midway between the min and max level indicators on the sensor
label. Be careful not to spill water, splash electrolyte or overfill sensor.
5. Replace the sensor cover securely.
6. Replace the top cover of the analyzer module.
If the electrolyte alarm is activated but the sensor shows sufficient electrolyte, the electrolyte
may have been contaminated by substances present in the sample which are chemically
incompatible with the sensor or electrolyte. If this should occur, the electrolyte must be
drained and replaced with fresh electrolyte.
Refer to section 4.3 for the proper procedure for replacing electrolyte.
Several other components may require replacement. These are discussed in the following
sections.