Tyne Engineering's handheld Tritium Monitor is designed to exacting quality standards to meet all your Tritium-in-Air monitoring requirements
This easy to use monitor, is a robust, portable instrument that uses all the latest technology. Adding this monitor to your collection of standard portable devices currently used in health physics monitoring increases your overall tritium monitoring capability.
Compensation for Gamma background is crucial in tritium measurement,since 1mR/Hr of Gamma field will generate 500 times the ionisation generated in 1 μCi/m3 of tritium.
Tyne designed the 4-chamber cruciform (250 cc 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.
| Sensitivity | 1 µCi/m3 (0.05 DAC) |
| Accuracy | ±3 µCi/m3 from 1 to 100 µCi/m3, ±10% from 100 µCi/m3 to 20,000 µCi/m3 |
| Range | 1 µCi/m3 to 20,000 µCi/m3 |
| Detector | 4 matched chambers - Two for measuring, two for compensation |
| Measuring chamber effective volume | 500 cc (2 measuring chambers of 250 cc each) |
| Flow rate | 1.4 L/m |
| Zero stability | ±1 µCi/m3 after unit is powered on for 5 minutes |
| Background cancellation | Less than 10% of the reading change in 10 mR/hr field |
| Radon compensation | Included in the software |
| Ion trap | Removes charge in the air before the measuring chambers |
| Dust filter | Built into the unit |
| Noble gas cancellation | Ports for air inlet/outlet of measuring chambers and compensation chambers are accessible on surface plate so silica gel drier can be placed between the chambers to compensate for presence of noble gas |
| Tritium discrimination | Instrument can discriminate in a field of HTO and elemental H3 using the silica gel drier |
| Purge/Decontamination | All 4 chambers can be heated up by a cartridge heater controlled by the unit |
| Display | Graphic LCD display. Unit displays the values (tritium and Gamma) both in numerical format and graphical trend |
| Communication | Can be configured to RS232 (short distance) or RS485 (long distance) |
| Analog output | 0-5 V linear or logarithmic voltage output |
| Power supply | 2.5 V - 5 V external power supply, or 3 C-cell battery. Total power consumption is 150 mA |
| Gamma measurement | At same time, the Gamma is measured by the unit. Gamma measuring range is from 0.1 mR/h to 10 R/h |
| Alarm | Tritium, Gamma and Low air flow alarms. Alarm will be shown by Red LED light and sound by audible device |
| Data logging | The tritium and Gamma values are logged every minute with current time and date stamp |
| Size and weight | 8"(L) x 5"(H) x 5"(W), 5 lbs |
| Drier | Note that the silica gel drier is not part of the standard equipment . It requires an additional accessory kit |
Documents
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Tyne Portable Tritium-in-Air Monitor DEC 2011
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