GREEN INSTRUMENTS G4130 NOX/O2, Руководство пользователя, Страница: 22 / 32

G4130 NO
x
/O
2
Analyzing System
21
6 Routine Maintenance
6.1 Calibration
The system must be calibrated regularly and always after each start-up of the
analyzer. The frequency of calibration depends on each specific application, but
we recommend the calibration before making any measuring report or at least
once a month.
6.2 Air Flow System
Routine inspection and maintenance of the air flow system and connections is re-
quired to make sure no gas is leaking from the system. It is important that air flow
and pressure are stable. Failure to periodically inspect and maintain the air flow
system and connections may lead to imprecise analyzer readings and thus a mal-
function of the system.
Make sure that the instrument air that is supplied at the air supply filter regulator
is maximum 8 bar and has a temperature of maximum 60
o
C. Always prevent ul-
traviolet rays from reaching the air supply filter regulator.
Before cleaning and servicing the air flow system, depressurize the air supply fil-
ter regulator. When cleaning do not use an adhesion of organic solvents to the air
supply filter regulator.
The flow meter and the control valve do not require any special maintenance. Dirt
and oil on the surface of the flow meters are to be removed carefully using neutral
detergent and a clean dry rag.