Compensation for Gamma background is crucial in tritium measurement, since 1mR/Hr of Gamma field will generate 500 times the ionization generated in 1 μCi/m3 of tritium. Tyne designed the 4-chamber cruciform (250cc each) in the hand held tritium-in-air monitor 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 tritium value. To cover high ranges of tritium a separate small ion chamber is used. Measurements such as flow from the solid-state flowmeter and chamber temperature are 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 surface 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 screen to operators working away from the instrument.
Batteries installed in the handle are easily replaced without the need for opening the unit.
A powerful long-life pump can be used to draw air through a 6 meter tube. This allows the instrument to be used to measure the inside of rooms without the need to enter the room.