(Click on photo to enlarge)
Stack/Area Monitors for
PET Isotope Production
The Laboratory Impex Systems PET stack monitor offers several
advantages that are necessary to properly determine the stack release
both to regulatory and best practice levels.
The Laboratory Impex Systems makes real stack flow and positron
specific activity concentration measurements repeatedly over a release
interval to properly calculate the actual release. The Laboratory Impex
Systems provides a better measurement than any other commercial vendor
in the market. Along the way we also provide remote sample measurement,
easy calibration, real time local readouts, real time local alarms, and
local data capture /trending analysis.
Compliance today does not always protect you from increased
expectations tomorrow. Protect yourself from potential future liability.
Don't just get by! Do It Right!
||Real Stack Flow
Laboratory Impex Systems provide an in-stack Pitot tube measurement
linked to a highly sensitive differential pressure sensor that can
measure real stack flow under dynamic conditions. Stack flows are
notoriously different from design flows and without this measurement the
release measurement is off by the same ratio.
||Remote sample measurement
Laboratory Impex Systems pull a gas sample out of the stack and provide
it via a forced flow system to a specialized detector that is located
inside the building out of the weather for long life, thermal stability,
and easy service. This also lets you locate the detector away from
potential background sources like filter banks so a high background
doesn't cause an over report of actual release
The Laboratory Impex Systems PG-10 is specifically
designed positron isotope gas sample. Its unique design gives you an
outstanding 3000:1 gamma rejection along with excellent sensitivity for
positrons. The design is not influenced by the flow rate thru the
detector and provides an extremely easy and accurate calibration method.
Mass shielding is not needed under any typical conditions.
||Simple and Reliable
The Laboratory Impex Systems CMS (Continuous
Monitoring System) controller provides local readout, local alarms, data
archiving / review, and programmable alarm relay outputs. A computer
interface provides a wide range data storage, analysis, and reporting
The Laboratory Impex Systems data back end comes in two forms:
1) A low cost and simple DAS interface stores the data in a MS-Access
format on a standard PC via a serial interface and provides instrument
communication and minimum built in review but leaves you equipped to do
your own site specific database query and reporting or
2) the 9205 full analysis and reporting system that does most
everything but can't be adequately described in this space.
fixed volume PG-10 detector located inside also makes for easy
calibration. Since the concentration measurement made here is determined
by the volume of the gas chamber not the flow rate through the chamber
an activity and volume calibrated gas sample can be introduced and the
efficiency immediately determined. The sample system has a valve set to
quickly implement this hook up.
CMS controller can also accommodate an optional gamma dose channel in
addition to the stack measurement if you want to measure and record dose
in some of the work areas.
Installation and service on site is provided. Experienced engineers and
service personal are part of the package when you select Laboratory
Impex Systems. Design stage consulting is also available
||PG-10 Sampling System
The PG-10 is a is specifically designed for beta gas sampling such as
PET isotopes It is a flow thru system with a detector specifically
designed for high Beta efficiency and low gamma sensitivity. It can be
located remote form the sampling point. Flow is provided by a dedicated
pump. The sampling probe and the pump are typically considered as part
of the PG-10
||(More to come ... .)