CAPINTEC, INC.
CRC
®
-712MX
•
Reliable measurements with a resolution as low as .001 millicuries (.0001 giga-
becquerels) and a top range of 800 Curies (20.00 tera-becquerels) are provided for
most radioisotopes.
•
The calibration numbers for 12 radionuclides are provided in Appendix II of the
owner’s manual. The Calibration Potentiometer sets the gain for the specific
radionuclide that is being measured. A 3-digit counter on the Potentiometer insures
precise setting of the calibration number.
•
The
CRC
®
-712MX Model Calibrator can have a total of 5 remote Ionization Chambers
connected to it. A 5 position Chamber Selector Switch is provided on the front panel
of the calibrator to designate which remote Ionization Chamber is being used for the
isotope measurement. After the initial CRC
®
-712MX order, additional Ionization
Chambers may be installed by the customer up to the 5 chamber limit.
•
The unique method of ion collection voltage application and the careful design of the
instrument eliminates any possibility of shock hazard to the user.
•
The 6cm diameter and 25cm deep Ionization Chamber well allows convenient
measurements of virtually any radioisotope in clinical use, including whole
generators.
•
Critical positioning of the sample vial or corrections for container effects should not be
required (except for X-ray, low energy
γ
-ray, or high energy
β
-ray emission dominant
radioisotopes).
•
The external shield of the Ionization Chamber protects users from exposure to
intense radiation and reduces the effect from background radiation on low-level
measurements. The optional Environmental Shield and Positron Shield lead ring sets
are available to minimize the exposure received by the user during high level activity
measurements.
•
The Ionization Chamber sensitivity measurement and system calibration test were
performed using Standards supplied by the U.S. National Institute of Standards and
Technology (NIST) formerly the U.S. National Bureau of Standards (NBS).
•
The use of the sealed 1 atmosphere chamber, filled with research grade pure argon
gas, eliminates the need for temperature and barometric pressure corrections.
•
The effects of the sample container, sample volume, and activity concentration are
minimized by optimizing the counting geometries.
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FUCTIONAL & TECHNICAL DESCRIPTION
January 08
