Agilent 7697A Headspace Sampler
Leak Testing the Headspace Sampler
Parts Supplied 1
Leak Check General Procedure 2
Flow Paths 4
高铁与动车哪个快Checking for External Leaks 6
To Run the Restriction and Pressure Decay Test 8
To Run the Cross Port Leak Test 18
To Check for Leaks in the Transfer Line 22
This document discuss leak testing in the headspace sampler (HS).
舒展的近义词Chromatographic symptoms such as loss of nsitivity can result from
leaks and restrictions. U the following t of tests for verifying leaks and
restrictions within the HS. Verify that the GC is leak free before checking
for leaks within the HS.
Parts Supplied
Table 1G4556-67010 Leak Test Kit
Description Part Number
Leak Test Kit
•Leak Test Instruction Sheet/Quick Reference Guide •Blue leak test vial
•six port valve cap
春天的故事歌词•No hole ferrule
•11-mm low bleed pta, 5 PK
•Plug, 1/8-in tube fitting, nylon G4556-67010 G4556-90001 G4556-20600 G6600-80039 5181-7458 5182-3413 0100-2414
Agilent 7697A Headspace Sampler
Leak Check General Procedure
When checking for leaks, consider the system in three parts: external leak points, GC leak points, and HS leak points.
•External leak points include the gas cylinder (or gas purifier), the regulator and its fittings, the supply shutoff valves, and the connections to the HS and GC supply fittings.•For GC leak points , refer to the GC ur documentation.
•HS leak points include the connections at the six port valve (sample loop and transfer line), the transfer line connection to the GC inlet, and the connections for the sampling probe.
1Gather the following:
•Electronic leak detector capable of detecting the gas type (Agilent part number G3388A).•7/16-inch, 包子素馅有哪些
9/16-inch, and 1/4-inch wrenches for tightening Swagelok and column fittings.•Leak test kit, Agilent part number G4556-67010. Includes: no hole ferrule, 11 mm low bleed pta, headspace (blue) leak test vial,
1/8-in. nylon tube fitting plug, 1/16-in. stainless steel ZDV plug (six port valve cap).
2Check any potential leak points associated with any recent
maintenance.安平古堡
3Check for external leaks. See "Checking for External Leaks".4Check the GC for leaks. See the GC ur documentation.
5Check HS fittings and connections that undergo thermal cycling, since
thermal cycling tends to loon some fitting types. U the electronic leak detector to determine if a fitting is leaking.•Start by checking any newly made connections first.
•Remember to check connections in the gas supply lines after changing traps or supply cylinders.
WARNING
孩子几个月会翻身
Hydrogen (H2) is flammable and is an explosion hazard when mixed with air in an enclod space (for example, a flow meter). Purge flow meters with inert gas as needed. Always measure gas individually.
WARNING
Hazardous sample may be prent.
Agilent 7697A Headspace Sampler 6Run the HS Restriction & pressure decay test. See To Run the Restriction
三皇五帝时期
and Pressure Decay Test.
7Run the HS Cross port leak test. See To Run the Cross Port Leak Test.
Agilent 7697A Headspace Sampler
Flow Paths
Figure 1 and Figure 2 below show the flow paths within the headspace
sampler (HS).
论语名言名句
Figure 1HS flow paths (standard installation)
Agilent 7697A Headspace Sampler
Figure 2HS flow paths with optional G4562A 7697A Carrier Gas EPC Module Accessory installed
