0. maintenance and service, 1. overview, 2. sensor – Emerson NGA 2000 TO2 User Manual
Page 61
Instruction Manual
760008-A
September 2001
Rosemount Analytical Inc. A Division of Emerson Process Management
Maintenance and Service 4-1
Model NGA 2000 TO2
SECTION 4
MAINTENANCE AND SERVICE
4-1 OVERVIEW
DANGER
.
ELECTRICAL SHOCK HAZARD
Operate this equipment only when covers
are secured. Servicing requires access to
live parts which can cause death or seri-
ous injury. Refer servicing to qualified
personnel. For safety and proper perform-
ance, this module must be connected to a
properly grounded three-wire source of
electrical power.
DANGER
.
POSSIBLE EXPLOSION HAZARD
This equipment is not designed and
should not be used in the analysis of
flammable samples. Use of this equipment
in this way could result in explosion and
death.
WARNING
.
HIGH PRESSURE GAS CYLINDERS
This analyzer requires use of pressurized
gas. See General Precautions for Handling
and Storing High Pressure Cylinders page
P-3.
WARNING
.
PARTS INTEGRITY
Tampering or unauthorized substitution of
components may adversely affect safety of
this product. Use only factory docu-
mented components for repair.
The TO2 Analyzer Module requires very little
maintenance during normal operation.
The sensor in the TO2 utilizes a liquid elec-
trolyte. When measuring dry gases, it may be
necessary to replenish the liquid by adding
distilled 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
acceptable operating limits as indicated by the
label on the reservoir section of the sensor.
The TO2 analyzer module is equipped with a
low electrolyte alarm which indicates when
replenishment of the sensor is required.
Please refer to the Platform manual for details
on configuring alarms.
4-2 SENSOR
CAUTION
.
CAUSTIC LIQUID
Electrolyte is a caustic solution. Review
the Material Safety Data Sheet in the rear
of this manual.