Air tritium monitor

characteristic

• Easy to use, one operation switch controls four states: shutdown, sampling, pump, and settings.
• Four ionization chambers are arranged in a cross shape. Two ionization chambers are used for measurement, and two are used for gamma compensation.
• The inaccuracy in a 20 mR/h field is less than ± 10%.
• High sensitivity. The amplification circuit adopts ultra-low current leakage technology. Each ionization chamber is equipped with a separate amplifier to improve the signal-to-noise ratio of the analog circuit.
• Implementing radon compensation for separating radon spikes through analog filtering circuits. The software identifies radon spikes as slowly changing signals from tritium signals.
• Each ionization chamber is equipped with an ion trap.
• Inert gas compensation.
• Built in GM tube for gamma measurement.
• The blowing and cleaning of the ionization chamber can be assisted by the built-in box heater.

explanation

In tritium measurement,Compensation for the gamma background is crucial, as a gamma field of 1mR/Hr will be 500 times more ionized than tritium at l µ Ci/m3. Taen designed four ion chambers in a cross shape, each connected to an ultra sensitive electrostatic amplifier and filter. All signals are converted by ADC converters, and the microprocessor calculates and displays tritium values. To cover a high range of tritium, a separate small ion chamber is used. The flow rate and combustion chamber temperature of the solid-state flowmeter are also monitored by a microprocessor.Instrument output includes analog（0-5V，4-20mA）； Relay alarm contact (30VDC, 1A), used for operating external devices; And communication (RS232/RS485) to download or record information onto a computer. The TFT full-color LCD display is installed on the panel to clearly display instrument readings in digital and graphical formats for real-time measurement and trend display.

The 7045 instrument is a platform based on the highly successful handheld tritium monitoring device manufactured by Tyne. The difference is that the wall mounted version can also be placed in a 19 inch rack mounted cabinet. There are four ion chambers, which are approximately three times larger than the 7043 handheld instrument and have increased sensitivity by three times. In addition, the wall mounted instrument has a longer lifespan pump that can be maintained from the front, such as replacing filters and drying media, as well as connecting sniffing probes within a 15 meter range.A larger ion chamber is installed in a compact package, allowing sensitivity to be eliminatedThe need for P-10 gas. This is a hassle for operators as it requires continuous supply, and the ion chamber also avoids the need for an unreliable flow ratio counting system. The 7045 ion chamber is sturdy and reliable. If they are indeed contaminated, they can be purged through the heater installed inside the device, while initiating a continuous cleaning flow through the chamber.The diaphragm pump of this device has a EPDM rubber diaphragm, which is considered reliable and durable on site. The pump is very quiet, and replacing the diaphragm is also very simple, taking only a few minutes to complete.

The sniffer probe can be installed at the front of the device. If the instrument detects a tritium leak and the operator wishes to sniff out a possible leak around the seal, a probe is used. This helps track the source of the leak. The sniffer is equipped with an extension toA 15 meter hose.The device has a touch screen for changing settings, alarm level settings, etc. Once the alarm is activated, the instrument panel will display an indicator light. It also provides sound alarms that can be cancelled without canceling the lights. The touch screen panel is activated by a two-level password scheme. Di provides one password for healthy physical personnel to set up the system, and the second password for operators to adjust alarms, etc. Although touch screens are highly suitable for the aforementioned purposes, they may not be bright enough to be seen from the entire room. For this purpose, a large digital reading is also provided to enhance the visibility of power plant operators. Our handheld version of the battery has been replaced with a wall mounted battery to avoid other necessary maintenance

Another feature of the Tyne instrument is that it is equipped with a color changing dryer to indicate when an update is needed. The dryer enables operators to evaluate whether tritium measurement is elemental measurement or notHTO measurement. If a signal appears in a humid environment where all tritium is HTO, using a dryer can also isolate the operator from the alpha signal.

Technical specifications