Emerson ROSEMOUNT NGA2000 TO2 - Manual (Page 20)

Instruction Manual
748374-F
March 2003
2-4 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 TO2
Sample
Inlet
1/4" Tube
Sample
Exhaust
1/4" Tube
Figure 2-3. Trace Oxygen Analyzer Back Panel Connections
CAUTION
GAS OVERPRESSURE
At no time should sample, zero or span
gas inlet pressure exceed 69 hPa - gauge
(1.0 psig). Damage to the Sensor may
occur if this pressure level is exceeded.
CAUTION
SAMPLE FLOW
Do not test the sample pressure by
blocking the exhaust. When the pres-
sure is released the sudden surge of
flow will spin the internal flowmeter off
its bearings and destroy it.
c. LEAK TEST
The TO2 Analyzer Module is completely
tested at the factory for gas leakage. The
user is responsible for testing for leakage
only at the inlet and outlet fittings on the
rear panel. Caution: Do not expose the
Sensor to pressure in excess of 1.0 psig
as this may cause damage.