E-PERM
Radon
Introductory Kit
With
the Basic Introductory Kit, you have all of the testing
equipment needed to handle a business level of about
seven homes per week. It includes an instructional DVD.
A set of reference electrets is included with the kit to
verify correct operation of the readout unit. The kit is
very affordable and additional radon detectors and
electrets can be added as your volume of radon work
grows.
- 1 SPER-1A
reader with cable, case and desiccant
- 1 Set of
reference electrets
- 10 S or
L chambers
- 10
Short-Term or Long-Term electrets
- 1 WINSPER
windows based report generator and data base software
program
- 1 E-PERM
system training DVD
- 1 Set of spreadsheet
templates
- Instruction
manual, including model QA plan and radon testing
protocols
- 1 package of
100 lock ties
- 20 Sheets of
tamper indicating tape
- 5 Tamper
resistant twin boxes
- Set of
sample forms on CD-ROM
- 5 copies
each of:
> Citizen Guide to Radon
> Home Buyers and Sellers Guide
> Marketing Brochures
> "Radon Test in Progress" door
hangers
The SPER-1A Electret Reader
The electret voltage reader is a highly sophisticated
electric-field sensor with a special receptacle into
which the electret is placed. When the shutter is opened,
the sensor can read the voltage on the electret surface
without touching it. Readings
of the electret voltage, before and after deployment provide an absolute number for unambiguous,
quantitative determination of the ion collection
accomplished by the electret due to radon in
the chamber.
S
Chamber
An electret is
paired with a precision, volumetric E-PERM chamber to
comprise a working E-PERM Radon Monitor. E-PERM radon
chambers are manufactured from electrically conductive
polypropylene. Inlets are filtered to allow only radon
by passive diffusion. E-PERM radon monitors are also
designed to have an insignificant response to thoron.
The S chamber is the most popular because of these
special features:
- Spring-loaded
cap for turning the device on or off
- Hole through
the open stem to allow a 1/8 inch lock tie security
seal
- Hanging ring
on the cap to suspend the device
Electrets
The
electret is a Teflon disk which has been electrically
charged and stabilized.
Short-term electrets with the S chamber will measure
a minimum detectable activity of 200 pCi/L in
approximately 48 hours.
Long-term
electrets with the S chamber will measure radon at a
level of 200 pCi/L
in approximately 21 days. Appropriate chamber and
electret combinations are recommended for high
concentration measurements.
Tamper-Resistant
Testing Box
Holds two S-Chamber monitors.
Radon Flux
Monitor
The
passive measurement of radon flux from the ground or
other surfaces used for determining the radon
emanating potential of a building site or to meet
regulatory measurement requirements for uranium mill
tailings or gypsum stacks.
The flux
monitor features a large, diffusion window. The chamber
is vented so that it will not accumulate the radon
concentration. When the E-PERM Flux Monitor is placed on
a radon emanating surface, the radon enters through the
diffusion window and exits through the vents. The
semi-equilibrium radon concentration inside the camber
is representative of dynamic flux from the surface. The
discharge rate of the electret is a measure of the radon
flux. E-PERM Flux Monitors have been calibrated on the
well-characterized radon flux beds at CANMET (Canada),
which are known to produce radon flux of 7.7 + 1.1 pCi m-2
second -1
(Flux
Units).
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