Passive Diffuser Cell
Model 7011
This passive diffusion cell for tritium is used to determine the total tritium in air based upon taking a continuous air sample where the vial is located.
The Passive Diffusion Cell is a rudimentary but effective apparatus that should be used in all tritium laboratories to measure airborne tritium activity. It comprises a vial filled with water and fitted with 5 micron diffuser plates installed inside the 1/2″ stain- less steel inlet tube inserted through the lid.The vial is held in position in a stand painted yellow, to which is attached a radiation sticker clearly identifying it as a tritium instrument. The stand is intended for a table or shelf, or it can be mounted on a wall.
The principle behind the Passive Diffusion Cell is simple. As it sits in the atmosphere of the laboratory it absorbs tritium from the air, and the uptake of tritium has a relationship to the amount of tritium present in the room atmosphere. The cells are measured weekly in a scintillation counter. With several of these inexpen- sive passive diffusion cells placed selectively around a laboratory convenient mapping of total
tritium presence in the atmosphere is recorded. Read- ings obtained confirm values from other often more sophisticated but less reliable instruments, confirming total tritium presence and potential exposure by personnel. After use the vial is cleaned and refilled with a cocktail in preparation for the next measurement.
related Tritium-In-Air Monitors
Tyne is an industry leader in the design and manufacturing of portable, wall mount and room radiation monitoring instruments. Our range of products extend from low cost and simple to use to highly specialized computer controlled systems that will ensure accurate monitoring. We offer complete monitoring solutions customized to our clients’ unique requirements.
Convenient and reliable handheld device monitors both tritium and gamma in a single robust, portable instrument.
High accuracy room monitoring for both tritium and gamma with the convenience of simple wall mounting for ease of removal for calibration or relocation.
A versatile wall or rack-mount monitor. The 7045 is intended for room monitoring for both tritium and gamma. Incorporating 4 ion chambers and a sniffer probe.
Accurately determines total tritium in air based on a continuous air sample drawn through a flexible tube that can be located up to 100 feet away. Features two ion chambers alternatively used with auto switching for continuous re-zeroing.
Simultaneously monitors up to 32 remote locations or rooms for background (environmental, gamma and other isotopes) compensated tritium activity.
Ideal for measuring tritium in remote locations. Includes battery backup, two sample tubes mounted on stands, real time measurement, backup bubbler totalizing, auto zeroing and dual local/remote alarms.
Incorporates two tritium monitor controllers mounted on a movable hand cart which can be pushed to an environment where an operator is performing tasks where concerns of possible tritium leaks into the atmosphere exist.
Enables operators leaving areas of potential tritium contamination to acquire an immediate measure of bodily uptake of tritium.
Determines the amount of tritium in the laboratory atmosphere via concentration of tritium absorbed into the Passive Diffusion Cell.
Tyne's tritium bubbler system collects workspace or environmental samples from ambient air. With the recognized fast conversion dynamic of free tritium to THO, the requirement for a catalytic furnace to convert free Tritium into THO prior to sampling is avoided and a direct three stage bubbler system implemented.
In order to provide customers with the desired flexibility, Tyne Engineering has developed an external pump box that can be utilized with all of our tritium monitoring instruments, providing reliable, continuous, long term operation beyond the design life of the instrument internal pumps.desired.
This system was designed by Tyne for the capture of tritium and carbon-14 from biological and environmental samples by pyrolysis followed by high temperature catalysis to THO and CO2. The evolved gases are captured in bubblers for THO capture followed by bubblers for CO2 capture. The resulting bubbler samples are analyzed using a laboratory liquid scintillation counter.
