Agilent Technologies Agilent 7890 Series User Manual

264 Maintaining Your GC
14 Maintaining the NPD
Selecting an NPD Jet
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.
• 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.
For adaptable fittings, select one of the following from
Table 44.
Capillary optimized fitting
Adaptable fitting
Detector fitting
Adapter
Tab le 4 3 Jets for capillary optimized fittings
Figure 3 ID Jet type Part number Jet tip id Length
1 Capillary with extended jet
(recommended)
G1534-80580 0.29 mm (0.011 inch) 51.5 mm
2 Capillary G1531-80560 0.29 mm (0.011 inch) 43 mm
3 High-temperature G1531-80620 0.47 mm (0.018 inch) 43 mm
Figure 5 Capillary optimized NPD jets
1
2
3
12
3
43 mm
51.5 mm
43 mm

Agilent Technologies Agilent 7890 Series Specifications

General

Brand	Agilent Technologies
Model	Agilent 7890 Series
Category	Measuring Instruments
Language	English