Emerson HAS60E-IM-HW Benutzerhandbuch
Instruction Manual
HAS60E-IM-HW
June 2007
June 2007
NGA 2000 CLD
4 - 7
Maintenance and Service
Emerson Process Management GmbH & Co.OHG
4-8 LEAKAGE TEST
The gas path system should be leak tested at least twice
a year and after maintenance, replacement or repair of
gas path parts.
a year and after maintenance, replacement or repair of
gas path parts.
a)
Required Tools
•
Test Medium
•
external Manometer
•
Swagelok
®
Blind Unions (2)
Figure 4-4: Principle Leakage Test Assembly
Table 4-1: Leakage Test Specifications
b)
Procedure
To perform aleakage testing, proceed as follows (see
figure 4-4):
figure 4-4):
1.
Close sample and ozonator air supply
2.
Disconnect the gas connections
3.
Close sample inlet and ozonator inlet with blind
unions
unions
4.
Connect a pressure meter to the exhaust fitting
5.
Connect test medium supply (N
2
or He) to the pres-
sure meter
6.
Supply Analyzer Module with the test medium with
a pressure of approx. 2,000 hPa (15 psig) and close
supply
a pressure of approx. 2,000 hPa (15 psig) and close
supply
.
Since CLD internal it comes to equalization of pres-
sure, supply is to open and to close repeatedly
until manometer doesn’t show pressure changes.
sure, supply is to open and to close repeatedly
until manometer doesn’t show pressure changes.
7.
Watch the manometer.
Over a period of about 15 minutes the pressure
drop may not be higher than 7.5 hPa/min. using
Helium (He) or 2.5 hPa/min. using Nitrogen (N
Over a period of about 15 minutes the pressure
drop may not be higher than 7.5 hPa/min. using
Helium (He) or 2.5 hPa/min. using Nitrogen (N
2
)
If the specifications (see table 4-1) were adhered to, then
the test is finished.
the test is finished.
Test Medium
Nitrogen (N
2
)
Helium (He)
Test Pressure
15 psig / 2,000 hPa / 1 bar
15 psig / 2,000 hPa / 1 bar
Test Time
15 min
15 min
permissible
Drop in Pressure
2.5 hPa / min
7.5 hPa / min
Ozonator Air
Exhaust
Sample
Closed Gas Connections
CLD Analyzer Module
Gas source with
test medium
N
2
or
He
P
External Manometer:
15 psig = 1,000 hPa