“Aconite-MDEA”: Methyldiethanolamine control

The principle of measurements of the MDEA vapours in air by the “Aconite-MDEA” Gas Detectors (hereinafter referred to as gas detectors) is the ionization principle, which consists in changing the mobility of the ions formed between the electrodes due to the irradiation of the analysed medium with beta particles emitted by a closed radionuclide source based on ⁶³Ni.
When MDEA molecules appear in the analysed air, these molecules are ionized by the primary air ions. The heavier ions are less mobile thus resulting in a decrease in a part of the ion current formed by the positive ions.
The degree of the current reduction is a detecting signal. The source of beta particles is a sealed source. It has an activity of LT the Minimum Significant Activity (MSA) and is not categorized by potential radiation hazard.
The gas detectors are stationary type single-unit devices of continuous operation. Structurally, gas detectors are made incorporated in a metal dust and water tight housing, in which there are:

• a chamber with forced pumping of the analysed medium and installed ionization detector;
• mesh replaceable input and output filters;
• controller;
• Power Supply Unit;
• automatic circuit-breaker;
• toggle switch and light indicator for activating a flow booster;
• executive relays: 2 pcs.