Sampling System; Transfer Line; Keypad And Display - Agilent Technologies G1289 Operating Manual

Introduction to Headspace and to the 7694 Headspace Sampler
The 7694 Headspace Sampler

Sampling System

The basic components include a 316–stainless–steel single–hole (side port)
concentric vial–sampling needle or probe with an internal diameter of 0.5 mm,
316–SS six–port valve, nickel valve sample loop, set of two miniature solenoid
valves, and nickel tubing. You can program the system's temperature up to
200°C.
Also available is a fused silica-lined stainless steel sampling path (Accessory
G1286A).

Transfer Line

This line connects the headspace sampler with the GC. Two types are
available: standard nickel and fused silica–lined stainless steel. The line is
heated to a maximum temperature of 220°C. There is a removable needle for
easy interfacing through GC inlet septa.
Table 1.
Material
Nickel
Nickel
Fused silica-lined
stainless steel

Keypad and Display

The headspace sampler has a 25–key elastomeric keypad. The display is a
single–line 20–character LED dot matrix design. All functions of the sampler
are controlled from the keypad with the exception of EPC, which is controlled
from the GC or ChemStation.
10
Transfer Lines
Length, cm
68
82
82
Part Number Comment
301–011–HSP
301–152–HSP Standard transfer line
301–211–HSP For applications requiring a
highly inert non–metal flow
path