Portable tritium-in-air monitor
Model 7043
Tyne Engineering’s handheld Tritium-In-Air Monitor for both tritium and gamma in a single robust, portable instrument.
- Simple to use, with only one operating switch with four settings: Off, Sample, Pump, Set Up.
- Gamma Compensation with four large ion chambers arranged in a cruciform configuration. Two chambers are used for measuring the air sample, and two are used for compensation.
- Accuracy better than 90% in a 20 mR/hr field.
- High Sensitivity. The volume of a measured charge is 500 cc. The current amplification circuit employs ultra- low leakage technology. Each chamber has its individual amplifier, improving the Signal-Noise Ratio of the analog circuit.
- Sensitivity is 1μCi/m3.
- Radon compensation is provided by an analog filter circuit designed to separate the radon spike. The software can distinguish the radon spike from the tritium signal occurring as a slow-change signal.
- Ion-traps built into each ion chamber.
- Noble gas compensation is accomplished by interposing a desiccant cartridge between the ports of the measurement and compensation chambers. The airflow to and from these chambers is channeled through ports that are accessible from the instrument’s faceplate. The noble gas signal can be displayed by the micro-processor.
Compensation for Gamma background is crucial in tritium measurement, since a gamma field of 1mR/Hr will generate 500 times the ionization generated in 1μCi/m3 of tritium. Tyne designed the four, 250 cc ion–chambers in a cruciform configuration with each chamber connected to an ultra sensitive electrometer amplifier and filter. All signals pass through the ADC converter, and the micro- processor calculates and displays the measured tritium value. To cover tritium concentrations, a separate small ion chamber is used. Measurements such as flow from the solid-state flow meter and chamber temperature are also monitored by the micro-processor.
Instrument output includes analog (0-5V, 4-20mA); relay alarm contact (30VDC, 1A) for operation of external equipment; and communication (RS232/RS485) to enable downloading or recording of information onto a computer. The TFT full color LCD display mounted on the instruments face plate clearly displays instrument readings in both digital and graphic format to show real time measurements and trends.
The well balanced, easy-to-carry instrument can be placed on its end for easy visibility of the touch screen monitors to operators working away from the instrument. Batteries installed in the handle are easily replaced.
The powerful and long-life pump can be used to draw air through a 10 meter sampling tube. This allows the instrument to be used to measure the inside of rooms without the need to enter the room.
related Tritium-In-Air Monitors
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.
