Agilent Technologies 7890 Series User Manual

Flow and Pressure Modules 2
Advanced Operation Manual 21
PIDs
The behavior of a pressure control module is governed by a
set of three constants, called P (proportional), I (integral),
and D (differential).
Certain gases or special applications (such as QuickSwap,
headspace vial pressurization, or splitter and backflush
applications) require different PIDs than those provided at
the factory.
If you need to update or change the pneumatic PID values
for an application, use the utility program on the
documentation and utility DVD provided with the GC.
The table summarizes custom PID values required for
selected applications. Note that if you are updating an AUX
EPC module, you will need to change the frit for the channel
used. See also “Restrictors.”
Tabl e 1 PIDs and frits
Application Module AUX frit Select Available PID
Values
QuickSwap AUX EPC 1 ring (or brown dot) Quickswap
Purged splitter and Deans Switch
when using backflush
AUX EPC No color or rings Quickswap
Purged splitter and Deans Switch AUX EPC 1 ring (or brown dot) Standard
Headspace vial pressurization AUX EPC No color or rings AUX_EPC_Headspace
Headspace sampling loop PCM in backpressure
control
PCM_Headspace

Agilent Technologies 7890 Series Specifications

General

Brand	Agilent Technologies
Model	7890 Series
Category	Laboratory Equipment
Language	English