“Aconite-MDEA”: Methyldiethanolamine control

“Aconite-MDEA”: Methyldiethanolamine control

Stationary Type Gas Detector of methyldiethanolamine vapours in air. Designed for continuous measurement of the mass concentration of methyldiethanolamine (MDEA, C5H13NO2) in the air of the working area and to signal of the MDEA mass concentration set value excess.

Pdf иконка“Aconite-MDEA” Type Approval Certificate

Pdf иконка“Aconite-MDEA”: Measuring Instruments Type Description

Pdf иконка“Aconite-MDEA”: Test Report

  • Description
  • Specifications

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.
On the bottom surface of the gas detector body housing there are: 220 VAC and 24 VDC power connectors, a connector for the porting to external information systems (discrete signals, Ethernet) and external actuators, and a sound emitter.

On the side surface of the gas detector there are: a power-on and operability control LED, a powerful red light-emitting LED for the signalling of the thresholds exceeding, and a sound acknowledgment button. Sampling is compulsory due to the built-in flow booster.

Characteristic Name


Signalled mass concentration of methylethanolamine::

 5 mg/m3
(1 MPC for operating space)

Overall gas detector dimensions, mm: NMT

  • width
  • length
  • height




Gas detector weight, kg, NMT:


Gas detectors are powered by:

180 VAC to 242 VAC, (50 ± 1) Hz

18 VAC to 24 VAC, (50 ± 1) Hz

Electric power consumed by the gas detector, W, NMT


Average service lifetime, years


Mean time between failures, hours


Operating conditions:

  • temperature range of the ambient and the analysed environment, ° C
  • relative humidity range,%
  • atmospheric pressure range, mm Hg

+5 to +45

10 to 90

650 to 790

Degree of protection of the gas detector body housing according to GOST 14254-2015: