Selecting An Npd Jet - Agilent Technologies Agilent 7890 Series Maintenance Manual

14
Maintaining the NPD

Selecting an NPD Jet

Table 43 Jets for capillary optimized fittings
Figure 3 ID Jet type
1 Capillary with extended jet
(recommended)
2 Capillary
3 High-temperature
264
Open the oven door and locate the column connection fitting
at the base of the detector. It will look like either a capillary
optimized fitting or an adaptable fitting.
Capillary optimized fitting
• If you have an application that tends to clog the jet, select
a jet with a wider tip id.
• When using packed columns in high column- bleed
applications, the jet tends to clog with silicon dioxide.
For capillary optimized fittings, select one of the following
from Table 43.
Part number
G1534-80580
G1531-80560
G1531-80620
51.5 mm
1
43 mm
2
43 mm
3
Figure 5 Capillary optimized NPD jets
For adaptable fittings, select one of the following from
Table 44.
Adaptable fitting
Detector fitting
Adapter
Jet tip id Length
0.29 mm (0.011 inch) 51.5 mm
0.29 mm (0.011 inch) 43 mm
0.47 mm (0.018 inch) 43 mm
1 2 3
Maintaining Your GC